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Diffstat (limited to 'test/ruby/test_string.rb')
| -rw-r--r-- | test/ruby/test_string.rb | 4045 |
1 files changed, 4045 insertions, 0 deletions
diff --git a/test/ruby/test_string.rb b/test/ruby/test_string.rb new file mode 100644 index 0000000000..2458d38ef4 --- /dev/null +++ b/test/ruby/test_string.rb @@ -0,0 +1,4045 @@ +# frozen_string_literal: false +require 'test/unit' + +class TestString < Test::Unit::TestCase + WIDE_ENCODINGS = [ + Encoding::UTF_16BE, Encoding::UTF_16LE, + Encoding::UTF_32BE, Encoding::UTF_32LE, + ] + + def initialize(*args) + @cls = String + super + end + + def S(*args, **kw) + @cls.new(*args, **kw) + end + + def test_s_new + assert_equal("", S()) + assert_equal(Encoding::ASCII_8BIT, S().encoding) + + assert_equal("", S("")) + assert_equal(__ENCODING__, S("").encoding) + + src = "RUBY" + assert_equal(src, S(src)) + assert_equal(__ENCODING__, S(src).encoding) + + src.force_encoding("euc-jp") + assert_equal(src, S(src)) + assert_equal(Encoding::EUC_JP, S(src).encoding) + + + assert_equal("", S(encoding: "euc-jp")) + assert_equal(Encoding::EUC_JP, S(encoding: "euc-jp").encoding) + + assert_equal("", S("", encoding: "euc-jp")) + assert_equal(Encoding::EUC_JP, S("", encoding: "euc-jp").encoding) + + src = "RUBY" + assert_equal(src, S(src, encoding: "euc-jp")) + assert_equal(Encoding::EUC_JP, S(src, encoding: "euc-jp").encoding) + + src.force_encoding("euc-jp") + assert_equal(src, S(src, encoding: "utf-8")) + assert_equal(Encoding::UTF_8, S(src, encoding: "utf-8").encoding) + + assert_equal("", S(capacity: 1000)) + assert_equal(Encoding::ASCII_8BIT, S(capacity: 1000).encoding) + + assert_equal("", S(capacity: 1000, encoding: "euc-jp")) + assert_equal(Encoding::EUC_JP, S(capacity: 1000, encoding: "euc-jp").encoding) + + assert_equal("", S("", capacity: 1000)) + assert_equal(__ENCODING__, S("", capacity: 1000).encoding) + + assert_equal("", S("", capacity: 1000, encoding: "euc-jp")) + assert_equal(Encoding::EUC_JP, S("", capacity: 1000, encoding: "euc-jp").encoding) + end + + def test_initialize + str = S("").freeze + assert_equal("", str.__send__(:initialize)) + assert_raise(FrozenError){ str.__send__(:initialize, 'abc') } + assert_raise(FrozenError){ str.__send__(:initialize, capacity: 1000) } + assert_raise(FrozenError){ str.__send__(:initialize, 'abc', capacity: 1000) } + assert_raise(FrozenError){ str.__send__(:initialize, encoding: 'euc-jp') } + assert_raise(FrozenError){ str.__send__(:initialize, 'abc', encoding: 'euc-jp') } + assert_raise(FrozenError){ str.__send__(:initialize, 'abc', capacity: 1000, encoding: 'euc-jp') } + + str = S("") + assert_equal("mystring", str.__send__(:initialize, "mystring")) + str = S("mystring") + assert_equal("mystring", str.__send__(:initialize, str)) + str = S("") + assert_equal("mystring", str.__send__(:initialize, "mystring", capacity: 1000)) + str = S("mystring") + assert_equal("mystring", str.__send__(:initialize, str, capacity: 1000)) + + if @cls == String + 100.times { + "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa". + __send__(:initialize, capacity: -1) + } + end + end + + def test_initialize_shared + S(str = "mystring" * 10).__send__(:initialize, capacity: str.bytesize) + assert_equal("mystring", str[0, 8]) + end + + def test_initialize_nonstring + assert_raise(TypeError) { + S(1) + } + assert_raise(TypeError) { + S(1, capacity: 1000) + } + end + + def test_initialize_memory_leak + return unless @cls == String + + assert_no_memory_leak([], <<-PREP, <<-CODE, rss: true) +code = proc {('x'*100_000).__send__(:initialize, '')} +1_000.times(&code) +PREP +100_000.times(&code) +CODE + end + + # Bug #18154 + def test_initialize_nofree_memory_leak + return unless @cls == String + + assert_no_memory_leak([], <<-PREP, <<-CODE, rss: true) +code = proc {0.to_s.__send__(:initialize, capacity: 100_000)} +1_000.times(&code) +PREP +100_000.times(&code) +CODE + end + + def test_AREF # '[]' + assert_equal("A", S("AooBar")[0]) + assert_equal("B", S("FooBaB")[-1]) + assert_equal(nil, S("FooBar")[6]) + assert_equal(nil, S("FooBar")[-7]) + + assert_equal(S("Foo"), S("FooBar")[0,3]) + assert_equal(S("Bar"), S("FooBar")[-3,3]) + assert_equal(S(""), S("FooBar")[6,2]) + assert_equal(nil, S("FooBar")[-7,10]) + + assert_equal(S("Foo"), S("FooBar")[0..2]) + assert_equal(S("Foo"), S("FooBar")[0...3]) + assert_equal(S("Bar"), S("FooBar")[-3..-1]) + assert_equal(S(""), S("FooBar")[6..2]) + assert_equal(nil, S("FooBar")[-10..-7]) + + assert_equal(S("Foo"), S("FooBar")[/^F../]) + assert_equal(S("Bar"), S("FooBar")[/..r$/]) + assert_equal(nil, S("FooBar")[/xyzzy/]) + assert_equal(nil, S("FooBar")[/plugh/]) + + assert_equal(S("Foo"), S("FooBar")[S("Foo")]) + assert_equal(S("Bar"), S("FooBar")[S("Bar")]) + assert_equal(nil, S("FooBar")[S("xyzzy")]) + assert_equal(nil, S("FooBar")[S("plugh")]) + + assert_equal(S("Foo"), S("FooBar")[/([A-Z]..)([A-Z]..)/, 1]) + assert_equal(S("Bar"), S("FooBar")[/([A-Z]..)([A-Z]..)/, 2]) + assert_equal(nil, S("FooBar")[/([A-Z]..)([A-Z]..)/, 3]) + assert_equal(S("Bar"), S("FooBar")[/([A-Z]..)([A-Z]..)/, -1]) + assert_equal(S("Foo"), S("FooBar")[/([A-Z]..)([A-Z]..)/, -2]) + assert_equal(nil, S("FooBar")[/([A-Z]..)([A-Z]..)/, -3]) + + o = Object.new + def o.to_int; 2; end + assert_equal("o", "foo"[o]) + + assert_raise(ArgumentError) { "foo"[] } + end + + def test_AREF_underflow + require "rbconfig/sizeof" + assert_equal(nil, S("\u{3042 3044 3046}")[RbConfig::LIMITS["LONG_MIN"], 1]) + end + + def test_AREF_invalid_encoding + assert_equal(S("\x80"), S("A"*39+"\x80")[-1, 1]) + end + + def test_ASET # '[]=' + s = S("FooBar") + s[0] = S('A') + assert_equal(S("AooBar"), s) + + s[-1]= S('B') + assert_equal(S("AooBaB"), s) + assert_raise(IndexError) { s[-7] = S("xyz") } + assert_equal(S("AooBaB"), s) + s[0] = S("ABC") + assert_equal(S("ABCooBaB"), s) + + s = S("FooBar") + s[0,3] = S("A") + assert_equal(S("ABar"),s) + s[0] = S("Foo") + assert_equal(S("FooBar"), s) + s[-3,3] = S("Foo") + assert_equal(S("FooFoo"), s) + assert_raise(IndexError) { s[7,3] = S("Bar") } + assert_raise(IndexError) { s[-7,3] = S("Bar") } + + s = S("FooBar") + s[0..2] = S("A") + assert_equal(S("ABar"), s) + s[1..3] = S("Foo") + assert_equal(S("AFoo"), s) + s[-4..-4] = S("Foo") + assert_equal(S("FooFoo"), s) + assert_raise(RangeError) { s[7..10] = S("Bar") } + assert_raise(RangeError) { s[-7..-10] = S("Bar") } + + s = S("FooBar") + s[/^F../]= S("Bar") + assert_equal(S("BarBar"), s) + s[/..r$/] = S("Foo") + assert_equal(S("BarFoo"), s) + assert_raise(IndexError) { s[/xyzzy/] = S("None") } + + s[/([A-Z]..)([A-Z]..)/, 1] = S("Foo") + assert_equal(S("FooFoo"), s) + s[/([A-Z]..)([A-Z]..)/, 2] = S("Bar") + assert_equal(S("FooBar"), s) + assert_raise(IndexError) { s[/([A-Z]..)([A-Z]..)/, 3] = "None" } + s[/([A-Z]..)([A-Z]..)/, -1] = S("Foo") + assert_equal(S("FooFoo"), s) + s[/([A-Z]..)([A-Z]..)/, -2] = S("Bar") + assert_equal(S("BarFoo"), s) + assert_raise(IndexError) { s[/([A-Z]..)([A-Z]..)/, -3] = "None" } + + s = S("FooBar") + s[S("Foo")] = S("Bar") + assert_equal(S("BarBar"), s) + + s = S("a string") + s[0..s.size] = S("another string") + assert_equal(S("another string"), s) + + o = Object.new + def o.to_int; 2; end + s = "foo" + s[o] = "bar" + assert_equal("fobar", s) + + assert_raise(ArgumentError) { "foo"[1, 2, 3] = "" } + + assert_raise(IndexError) {"foo"[RbConfig::LIMITS["LONG_MIN"]] = "l"} + end + + def test_CMP # '<=>' + assert_equal(1, S("abcdef") <=> S("abcde")) + assert_equal(0, S("abcdef") <=> S("abcdef")) + assert_equal(-1, S("abcde") <=> S("abcdef")) + + assert_equal(-1, S("ABCDEF") <=> S("abcdef")) + + assert_nil(S("foo") <=> Object.new) + + o = Object.new + def o.to_str; "bar"; end + assert_equal(1, S("foo") <=> o) + + class << o;remove_method :to_str;end + def o.<=>(x); nil; end + assert_nil(S("foo") <=> o) + + class << o;remove_method :<=>;end + def o.<=>(x); 1; end + assert_equal(-1, S("foo") <=> o) + + class << o;remove_method :<=>;end + def o.<=>(x); 2**100; end + assert_equal(-1, S("foo") <=> o) + end + + def test_EQUAL # '==' + assert_not_equal(:foo, S("foo")) + assert_equal(S("abcdef"), S("abcdef")) + + assert_not_equal(S("CAT"), S('cat')) + assert_not_equal(S("CaT"), S('cAt')) + assert_not_equal(S("cat\0""dog"), S("cat\0")) + + o = Object.new + def o.to_str; end + def o.==(x); false; end + assert_equal(false, S("foo") == o) + class << o;remove_method :==;end + def o.==(x); true; end + assert_equal(true, S("foo") == o) + end + + def test_LSHIFT # '<<' + assert_equal(S("world!"), S("world") << 33) + assert_equal(S("world!"), S("world") << S("!")) + + s = "a" + 10.times {|i| + s << s + assert_equal("a" * (2 << i), s) + } + + s = ["foo"].pack("p") + l = s.size + s << "bar" + assert_equal(l + 3, s.size) + + bug = '[ruby-core:27583]' + assert_raise(RangeError, bug) {S("a".force_encoding(Encoding::UTF_8)) << -3} + assert_raise(RangeError, bug) {S("a".force_encoding(Encoding::UTF_8)) << -2} + assert_raise(RangeError, bug) {S("a".force_encoding(Encoding::UTF_8)) << -1} + assert_raise(RangeError, bug) {S("a".force_encoding(Encoding::UTF_8)) << 0x81308130} + assert_nothing_raised {S("a".force_encoding(Encoding::GB18030)) << 0x81308130} + + s = "\x95".force_encoding(Encoding::SJIS).tap(&:valid_encoding?) + assert_predicate(s << 0x5c, :valid_encoding?) + end + + def test_MATCH # '=~' + assert_equal(10, S("FeeFieFoo-Fum") =~ /Fum$/) + assert_equal(nil, S("FeeFieFoo-Fum") =~ /FUM$/) + + o = Object.new + def o.=~(x); x + "bar"; end + assert_equal("foobar", S("foo") =~ o) + + assert_raise(TypeError) { S("foo") =~ "foo" } + end + + def test_MOD # '%' + assert_equal(S("00123"), S("%05d") % 123) + assert_equal(S("123 |00000001"), S("%-5s|%08x") % [123, 1]) + x = S("%3s %-4s%%foo %.0s%5d %#x%c%3.1f %b %x %X %#b %#x %#X") % + [S("hi"), + 123, + S("never seen"), + 456, + 0, + ?A, + 3.0999, + 11, + 171, + 171, + 11, + 171, + 171] + + assert_equal(S(' hi 123 %foo 456 0A3.1 1011 ab AB 0b1011 0xab 0XAB'), x) + end + + def test_MUL # '*' + assert_equal(S("XXX"), S("X") * 3) + assert_equal(S("HOHO"), S("HO") * 2) + end + + def test_PLUS # '+' + assert_equal(S("Yodel"), S("Yo") + S("del")) + end + + def casetest(a, b, rev=false) + msg = proc {"#{a} should#{' not' if rev} match #{b}"} + case a + when b + assert(!rev, msg) + else + assert(rev, msg) + end + end + + def test_VERY_EQUAL # '===' + # assert_equal(true, S("foo") === :foo) + casetest(S("abcdef"), S("abcdef")) + + casetest(S("CAT"), S('cat'), true) # Reverse the test - we don't want to + casetest(S("CaT"), S('cAt'), true) # find these in the case. + end + + def test_capitalize + assert_equal(S("Hello"), S("hello").capitalize) + assert_equal(S("Hello"), S("hELLO").capitalize) + assert_equal(S("123abc"), S("123ABC").capitalize) + end + + def test_capitalize! + a = S("hello"); a.capitalize! + assert_equal(S("Hello"), a) + + a = S("hELLO"); a.capitalize! + assert_equal(S("Hello"), a) + + a = S("123ABC"); a.capitalize! + assert_equal(S("123abc"), a) + + assert_equal(nil, S("123abc").capitalize!) + assert_equal(S("123abc"), S("123ABC").capitalize!) + assert_equal(S("Abc"), S("ABC").capitalize!) + assert_equal(S("Abc"), S("abc").capitalize!) + assert_equal(nil, S("Abc").capitalize!) + + a = S("hello") + b = a.dup + assert_equal(S("Hello"), a.capitalize!) + assert_equal(S("hello"), b) + + end + + Bug2463 = '[ruby-dev:39856]' + def test_center + assert_equal(S("hello"), S("hello").center(4)) + assert_equal(S(" hello "), S("hello").center(11)) + assert_equal(S("ababaababa"), S("").center(10, "ab"), Bug2463) + assert_equal(S("ababaababab"), S("").center(11, "ab"), Bug2463) + end + + def test_chomp + verbose, $VERBOSE = $VERBOSE, nil + + assert_equal(S("hello"), S("hello").chomp("\n")) + assert_equal(S("hello"), S("hello\n").chomp("\n")) + save = $/ + + $/ = "\n" + + assert_equal(S("hello"), S("hello").chomp) + assert_equal(S("hello"), S("hello\n").chomp) + + $/ = "!" + assert_equal(S("hello"), S("hello").chomp) + assert_equal(S("hello"), S("hello!").chomp) + $/ = save + + assert_equal(S("a").hash, S("a\u0101").chomp(S("\u0101")).hash, '[ruby-core:22414]') + + s = S("hello") + assert_equal("hel", s.chomp('lo')) + assert_equal("hello", s) + + s = S("hello") + assert_equal("hello", s.chomp('he')) + assert_equal("hello", s) + + s = S("\u{3053 3093 306b 3061 306f}") + assert_equal("\u{3053 3093 306b}", s.chomp("\u{3061 306f}")) + assert_equal("\u{3053 3093 306b 3061 306f}", s) + + s = S("\u{3053 3093 306b 3061 306f}") + assert_equal("\u{3053 3093 306b 3061 306f}", s.chomp('lo')) + assert_equal("\u{3053 3093 306b 3061 306f}", s) + + s = S("hello") + assert_equal("hello", s.chomp("\u{3061 306f}")) + assert_equal("hello", s) + + # skip if argument is a broken string + s = S("\xe3\x81\x82") + assert_equal("\xe3\x81\x82", s.chomp("\x82")) + assert_equal("\xe3\x81\x82", s) + + s = S("\x95\x5c").force_encoding("Shift_JIS") + assert_equal("\x95\x5c".force_encoding("Shift_JIS"), s.chomp("\x5c")) + assert_equal("\x95\x5c".force_encoding("Shift_JIS"), s) + + # clear coderange + s = S("hello\u{3053 3093}") + assert_not_predicate(s, :ascii_only?) + assert_predicate(s.chomp("\u{3053 3093}"), :ascii_only?) + + # argument should be converted to String + klass = Class.new { def to_str; 'a'; end } + s = S("abba") + assert_equal("abb", s.chomp(klass.new)) + assert_equal("abba", s) + + # chomp removes any of "\n", "\r\n", "\r" when "\n" is specified + s = "foo\n" + assert_equal("foo", s.chomp("\n")) + s = "foo\r\n" + assert_equal("foo", s.chomp("\n")) + s = "foo\r" + assert_equal("foo", s.chomp("\n")) + ensure + $/ = save + $VERBOSE = verbose + end + + def test_chomp! + verbose, $VERBOSE = $VERBOSE, nil + + a = S("hello") + a.chomp!(S("\n")) + + assert_equal(S("hello"), a) + assert_equal(nil, a.chomp!(S("\n"))) + + a = S("hello\n") + a.chomp!(S("\n")) + assert_equal(S("hello"), a) + save = $/ + + $/ = "\n" + a = S("hello") + a.chomp! + assert_equal(S("hello"), a) + + a = S("hello\n") + a.chomp! + assert_equal(S("hello"), a) + + $/ = "!" + a = S("hello") + a.chomp! + assert_equal(S("hello"), a) + + a="hello!" + a.chomp! + assert_equal(S("hello"), a) + + $/ = save + + a = S("hello\n") + b = a.dup + assert_equal(S("hello"), a.chomp!) + assert_equal(S("hello\n"), b) + + s = "foo\r\n" + s.chomp! + assert_equal("foo", s) + + s = "foo\r" + s.chomp! + assert_equal("foo", s) + + s = "foo\r\n" + s.chomp!("") + assert_equal("foo", s) + + s = "foo\r" + s.chomp!("") + assert_equal("foo\r", s) + + assert_equal(S("a").hash, S("a\u0101").chomp!(S("\u0101")).hash, '[ruby-core:22414]') + + s = S("").freeze + assert_raise_with_message(FrozenError, /frozen/) {s.chomp!} + $VERBOSE = nil # EnvUtil.suppress_warning resets $VERBOSE to the original state + + s = S("ax") + o = Struct.new(:s).new(s) + def o.to_str + s.freeze + "x" + end + assert_raise_with_message(FrozenError, /frozen/) {s.chomp!(o)} + $VERBOSE = nil # EnvUtil.suppress_warning resets $VERBOSE to the original state + + s = S("hello") + assert_equal("hel", s.chomp!('lo')) + assert_equal("hel", s) + + s = S("hello") + assert_equal(nil, s.chomp!('he')) + assert_equal("hello", s) + + s = S("\u{3053 3093 306b 3061 306f}") + assert_equal("\u{3053 3093 306b}", s.chomp!("\u{3061 306f}")) + assert_equal("\u{3053 3093 306b}", s) + + s = S("\u{3053 3093 306b 3061 306f}") + assert_equal(nil, s.chomp!('lo')) + assert_equal("\u{3053 3093 306b 3061 306f}", s) + + s = S("hello") + assert_equal(nil, s.chomp!("\u{3061 306f}")) + assert_equal("hello", s) + + # skip if argument is a broken string + s = S("\xe3\x81\x82") + assert_equal(nil, s.chomp!("\x82")) + assert_equal("\xe3\x81\x82", s) + + s = S("\x95\x5c").force_encoding("Shift_JIS") + assert_equal(nil, s.chomp!("\x5c")) + assert_equal("\x95\x5c".force_encoding("Shift_JIS"), s) + + # clear coderange + s = S("hello\u{3053 3093}") + assert_not_predicate(s, :ascii_only?) + assert_predicate(s.chomp!("\u{3053 3093}"), :ascii_only?) + + # argument should be converted to String + klass = Class.new { def to_str; 'a'; end } + s = S("abba") + assert_equal("abb", s.chomp!(klass.new)) + assert_equal("abb", s) + + # chomp removes any of "\n", "\r\n", "\r" when "\n" is specified + s = "foo\n" + assert_equal("foo", s.chomp!("\n")) + s = "foo\r\n" + assert_equal("foo", s.chomp!("\n")) + s = "foo\r" + assert_equal("foo", s.chomp!("\n")) + + assert_raise(ArgumentError) {String.new.chomp!("", "")} + ensure + $/ = save + $VERBOSE = verbose + end + + def test_chop + assert_equal(S("hell"), S("hello").chop) + assert_equal(S("hello"), S("hello\r\n").chop) + assert_equal(S("hello\n"), S("hello\n\r").chop) + assert_equal(S(""), S("\r\n").chop) + assert_equal(S(""), S("").chop) + assert_equal(S("a").hash, S("a\u00d8").chop.hash) + end + + def test_chop! + a = S("hello").chop! + assert_equal(S("hell"), a) + + a = S("hello\r\n").chop! + assert_equal(S("hello"), a) + + a = S("hello\n\r").chop! + assert_equal(S("hello\n"), a) + + a = S("\r\n").chop! + assert_equal(S(""), a) + + a = S("").chop! + assert_nil(a) + + a = S("a\u00d8") + a.chop! + assert_equal(S("a").hash, a.hash) + + a = S("hello\n") + b = a.dup + assert_equal(S("hello"), a.chop!) + assert_equal(S("hello\n"), b) + end + + def test_clone + for frozen in [ false, true ] + a = S("Cool") + a.freeze if frozen + b = a.clone + + assert_equal(a, b) + assert_not_same(a, b) + assert_equal(a.frozen?, b.frozen?) + end + + assert_equal("", File.read(IO::NULL).clone, '[ruby-dev:32819] reported by Kazuhiro NISHIYAMA') + end + + def test_concat + assert_equal(S("world!"), S("world").concat(33)) + assert_equal(S("world!"), S("world").concat(S('!'))) + b = S("sn") + assert_equal(S("snsnsn"), b.concat(b, b)) + + bug7090 = '[ruby-core:47751]' + result = S("").force_encoding(Encoding::UTF_16LE) + result << 0x0300 + expected = S("\u0300".encode(Encoding::UTF_16LE)) + assert_equal(expected, result, bug7090) + assert_raise(TypeError) { S('foo') << :foo } + assert_raise(FrozenError) { S('foo').freeze.concat('bar') } + end + + def test_concat_literals + s=S("." * 50) + assert_equal(Encoding::UTF_8, "#{s}x".encoding) + end + + def test_string_interpolations_across_heaps_get_embedded + omit if GC::INTERNAL_CONSTANTS[:HEAP_COUNT] == 1 + + require 'objspace' + base_slot_size = GC::INTERNAL_CONSTANTS[:BASE_SLOT_SIZE] + small_obj_size = (base_slot_size / 2) + large_obj_size = base_slot_size * 2 + + a = "a" * small_obj_size + b = "a" * large_obj_size + + res = "#{a}, #{b}" + dump_res = ObjectSpace.dump(res) + dump_orig = ObjectSpace.dump(a) + new_slot_size = Integer(dump_res.match(/"slot_size":(\d+)/)[1]) + orig_slot_size = Integer(dump_orig.match(/"slot_size":(\d+)/)[1]) + + assert_match(/"embedded":true/, dump_res) + assert_operator(new_slot_size, :>, orig_slot_size) + end + + def test_count + a = S("hello world") + assert_equal(5, a.count(S("lo"))) + assert_equal(2, a.count(S("lo"), S("o"))) + assert_equal(4, a.count(S("hello"), S("^l"))) + assert_equal(4, a.count(S("ej-m"))) + assert_equal(0, S("y").count(S("a\\-z"))) + assert_equal(5, S("abc\u{3042 3044 3046}").count("^a")) + assert_equal(1, S("abc\u{3042 3044 3046}").count("\u3042")) + assert_equal(5, S("abc\u{3042 3044 3046}").count("^\u3042")) + assert_equal(2, S("abc\u{3042 3044 3046}").count("a-z", "^a")) + assert_equal(0, S("abc\u{3042 3044 3046}").count("a", "\u3042")) + assert_equal(0, S("abc\u{3042 3044 3046}").count("\u3042", "a")) + assert_equal(0, S("abc\u{3042 3044 3046}").count("\u3042", "\u3044")) + assert_equal(4, S("abc\u{3042 3044 3046}").count("^a", "^\u3044")) + assert_equal(4, S("abc\u{3042 3044 3046}").count("^\u3044", "^a")) + assert_equal(4, S("abc\u{3042 3044 3046}").count("^\u3042", "^\u3044")) + + assert_raise(ArgumentError) { S("foo").count } + end + + def crypt_supports_des_crypt? + /openbsd/ !~ RUBY_PLATFORM + end + + def test_crypt + if crypt_supports_des_crypt? + pass = "aaGUC/JkO9/Sc" + good_salt = "aa" + bad_salt = "ab" + else + pass = "$2a$04$0WVaz0pV3jzfZ5G5tpmHWuBQGbkjzgtSc3gJbmdy0GAGMa45MFM2." + good_salt = "$2a$04$0WVaz0pV3jzfZ5G5tpmHWu" + bad_salt = "$2a$04$0WVaz0pV3jzfZ5G5tpmHXu" + end + assert_equal(S(pass), S("mypassword").crypt(S(good_salt))) + assert_not_equal(S(pass), S("mypassword").crypt(S(bad_salt))) + assert_raise(ArgumentError) {S("mypassword").crypt(S(""))} + assert_raise(ArgumentError) {S("mypassword").crypt(S("\0a"))} + assert_raise(ArgumentError) {S("mypassword").crypt(S("a\0"))} + assert_raise(ArgumentError) {S("poison\u0000null").crypt(S("aa"))} + WIDE_ENCODINGS.each do |enc| + assert_raise(ArgumentError) {S("mypassword").crypt(S("aa".encode(enc)))} + assert_raise(ArgumentError) {S("mypassword".encode(enc)).crypt(S("aa"))} + end + + @cls == String and + assert_no_memory_leak([], "s = ''; salt_proc = proc{#{(crypt_supports_des_crypt? ? '..' : good_salt).inspect}}", "#{<<~"begin;"}\n#{<<~'end;'}") + + begin; + 1000.times { s.crypt(-salt_proc.call).clear } + end; + end + + def test_delete + assert_equal(S("heo"), S("hello").delete(S("l"), S("lo"))) + assert_equal(S("he"), S("hello").delete(S("lo"))) + assert_equal(S("hell"), S("hello").delete(S("aeiou"), S("^e"))) + assert_equal(S("ho"), S("hello").delete(S("ej-m"))) + + assert_equal(S("a").hash, S("a\u0101").delete("\u0101").hash, '[ruby-talk:329267]') + assert_equal(true, S("a\u0101").delete("\u0101").ascii_only?) + assert_equal(true, S("a\u3041").delete("\u3041").ascii_only?) + assert_equal(false, S("a\u3041\u3042").delete("\u3041").ascii_only?) + + assert_equal("a", S("abc\u{3042 3044 3046}").delete("^a")) + assert_equal("bc\u{3042 3044 3046}", S("abc\u{3042 3044 3046}").delete("a")) + assert_equal("\u3042", S("abc\u{3042 3044 3046}").delete("^\u3042")) + + bug6160 = '[ruby-dev:45374]' + assert_equal("", S('\\').delete('\\'), bug6160) + end + + def test_delete! + a = S("hello") + a.delete!(S("l"), S("lo")) + assert_equal(S("heo"), a) + + a = S("hello") + a.delete!(S("lo")) + assert_equal(S("he"), a) + + a = S("hello") + a.delete!(S("aeiou"), S("^e")) + assert_equal(S("hell"), a) + + a = S("hello") + a.delete!(S("ej-m")) + assert_equal(S("ho"), a) + + a = S("hello") + assert_nil(a.delete!(S("z"))) + + a = S("hello") + b = a.dup + a.delete!(S("lo")) + assert_equal(S("he"), a) + assert_equal(S("hello"), b) + + a = S("hello") + a.delete!(S("^el")) + assert_equal(S("ell"), a) + + assert_raise(ArgumentError) { S("foo").delete! } + end + + + def test_downcase + assert_equal(S("hello"), S("helLO").downcase) + assert_equal(S("hello"), S("hello").downcase) + assert_equal(S("hello"), S("HELLO").downcase) + assert_equal(S("abc hello 123"), S("abc HELLO 123").downcase) + assert_equal(S("h\0""ello"), S("h\0""ELLO").downcase) + end + + def test_downcase! + a = S("helLO") + b = a.dup + assert_equal(S("hello"), a.downcase!) + assert_equal(S("hello"), a) + assert_equal(S("helLO"), b) + + a=S("hello") + assert_nil(a.downcase!) + assert_equal(S("hello"), a) + + a = S("h\0""ELLO") + b = a.dup + assert_equal(S("h\0""ello"), a.downcase!) + assert_equal(S("h\0""ello"), a) + assert_equal(S("h\0""ELLO"), b) + end + + def test_dump + a= S("Test") << 1 << 2 << 3 << 9 << 13 << 10 + assert_equal(S('"Test\\x01\\x02\\x03\\t\\r\\n"'), a.dump) + b= S("\u{7F}") + assert_equal(S('"\\x7F"'), b.dump) + b= S("\u{AB}") + assert_equal(S('"\\u00AB"'), b.dump) + b= S("\u{ABC}") + assert_equal(S('"\\u0ABC"'), b.dump) + b= S("\uABCD") + assert_equal(S('"\\uABCD"'), b.dump) + b= S("\u{ABCDE}") + assert_equal(S('"\\u{ABCDE}"'), b.dump) + b= S("\u{10ABCD}") + assert_equal(S('"\\u{10ABCD}"'), b.dump) + end + + def test_undump + a = S("Test") << 1 << 2 << 3 << 9 << 13 << 10 + assert_equal(a, S('"Test\\x01\\x02\\x03\\t\\r\\n"').undump) + assert_equal(S("\\ca"), S('"\\ca"').undump) + assert_equal(S("\u{7F}"), S('"\\x7F"').undump) + assert_equal(S("\u{7F}A"), S('"\\x7FA"').undump) + assert_equal(S("\u{AB}"), S('"\\u00AB"').undump) + assert_equal(S("\u{ABC}"), S('"\\u0ABC"').undump) + assert_equal(S("\uABCD"), S('"\\uABCD"').undump) + assert_equal(S("\uABCD"), S('"\\uABCD"').undump) + assert_equal(S("\u{ABCDE}"), S('"\\u{ABCDE}"').undump) + assert_equal(S("\u{10ABCD}"), S('"\\u{10ABCD}"').undump) + assert_equal(S("\u{ABCDE 10ABCD}"), S('"\\u{ABCDE 10ABCD}"').undump) + assert_equal(S(""), S('"\\u{}"').undump) + assert_equal(S(""), S('"\\u{ }"').undump) + + assert_equal(S("\u3042".encode("sjis")), S('"\x82\xA0"'.force_encoding("sjis")).undump) + assert_equal(S("\u8868".encode("sjis")), S("\"\\x95\\\\\"".force_encoding("sjis")).undump) + + assert_equal(S("äöü"), S('"\u00E4\u00F6\u00FC"').undump) + assert_equal(S("äöü"), S('"\xC3\xA4\xC3\xB6\xC3\xBC"').undump) + + assert_equal(Encoding::UTF_8, S('"\\u3042"').encode(Encoding::EUC_JP).undump.encoding) + + assert_equal("abc".encode(Encoding::UTF_16LE), + S('"a\x00b\x00c\x00".force_encoding("UTF-16LE")').undump) + + assert_equal('\#', S('"\\\\#"').undump) + assert_equal('\#{', S('"\\\\\#{"').undump) + + assert_undump("\0\u{ABCD}") + assert_undump(S('"\x00\u3042"'.force_encoding("SJIS"))) + assert_undump(S('"\u3042\x7E"'.force_encoding("SJIS"))) + + assert_raise(RuntimeError) { S('\u3042').undump } + assert_raise(RuntimeError) { S('"\x82\xA0\u3042"'.force_encoding("SJIS")).undump } + assert_raise(RuntimeError) { S('"\u3042\x82\xA0"'.force_encoding("SJIS")).undump } + assert_raise(RuntimeError) { S('"".force_encoding()').undump } + assert_raise(RuntimeError) { S('"".force_encoding("').undump } + assert_raise(RuntimeError) { S('"".force_encoding("UNKNOWN")').undump } + assert_raise(RuntimeError) { S('"\u3042".force_encoding("UTF-16LE")').undump } + assert_raise(RuntimeError) { S('"\x00\x00".force_encoding("UTF-16LE")"').undump } + assert_raise(RuntimeError) { S('"\x00\x00".force_encoding("'+("a"*9999999)+'")"').undump } + assert_raise(RuntimeError) { S(%("\u00E4")).undump } + assert_raise(RuntimeError) { S('"').undump } + assert_raise(RuntimeError) { S('"""').undump } + assert_raise(RuntimeError) { S('""""').undump } + + assert_raise(RuntimeError) { S('"a').undump } + assert_raise(RuntimeError) { S('"\u"').undump } + assert_raise(RuntimeError) { S('"\u{"').undump } + assert_raise(RuntimeError) { S('"\u304"').undump } + assert_raise(RuntimeError) { S('"\u304Z"').undump } + assert_raise(RuntimeError) { S('"\udfff"').undump } + assert_raise(RuntimeError) { S('"\u{dfff}"').undump } + assert_raise(RuntimeError) { S('"\u{3042"').undump } + assert_raise(RuntimeError) { S('"\u{3042 "').undump } + assert_raise(RuntimeError) { S('"\u{110000}"').undump } + assert_raise(RuntimeError) { S('"\u{1234567}"').undump } + assert_raise(RuntimeError) { S('"\x"').undump } + assert_raise(RuntimeError) { S('"\xA"').undump } + assert_raise(RuntimeError) { S('"\\"').undump } + assert_raise(RuntimeError) { S(%("\0")).undump } + assert_raise_with_message(RuntimeError, /invalid/) { + S('"\\u{007F}".xxxxxx').undump + } + end + + def test_undump_gc_compact_stress + omit "compaction doesn't work well on s390x" if RUBY_PLATFORM =~ /s390x/ # https://github.com/ruby/ruby/pull/5077 + a = S("Test") << 1 << 2 << 3 << 9 << 13 << 10 + EnvUtil.under_gc_compact_stress do + assert_equal(a, S('"Test\\x01\\x02\\x03\\t\\r\\n"').undump) + end + + EnvUtil.under_gc_compact_stress do + assert_equal(S("\u{ABCDE 10ABCD}"), S('"\\u{ABCDE 10ABCD}"').undump) + end + end + + def test_dup + for frozen in [ false, true ] + a = S("hello") + a.freeze if frozen + b = a.dup + + assert_equal(a, b) + assert_not_same(a, b) + assert_not_predicate(b, :frozen?) + end + end + + class StringWithIVSet < String + def set_iv + @foo = 1 + end + end + + def test_ivar_set_after_frozen_dup + str = StringWithIVSet.new.freeze + str.dup.set_iv + assert_raise(FrozenError) { str.set_iv } + end + + def test_each + verbose, $VERBOSE = $VERBOSE, nil + + save = $/ + $/ = "\n" + res=[] + S("hello\nworld").lines.each {|x| res << x} + assert_equal(S("hello\n"), res[0]) + assert_equal(S("world"), res[1]) + + res=[] + S("hello\n\n\nworld").lines(S('')).each {|x| res << x} + assert_equal(S("hello\n\n"), res[0]) + assert_equal(S("world"), res[1]) + + $/ = "!" + res=[] + S("hello!world").lines.each {|x| res << x} + assert_equal(S("hello!"), res[0]) + assert_equal(S("world"), res[1]) + ensure + $/ = save + $VERBOSE = verbose + end + + def test_each_byte + s = S("ABC") + + res = [] + assert_equal s.object_id, s.each_byte {|x| res << x }.object_id + assert_equal(65, res[0]) + assert_equal(66, res[1]) + assert_equal(67, res[2]) + + assert_equal 65, s.each_byte.next + end + + def test_bytes + s = S("ABC") + assert_equal [65, 66, 67], s.bytes + + res = [] + assert_equal s.object_id, s.bytes {|x| res << x }.object_id + assert_equal(65, res[0]) + assert_equal(66, res[1]) + assert_equal(67, res[2]) + s = S("ABC") + res = [] + assert_same s, s.bytes {|x| res << x } + assert_equal [65, 66, 67], res + end + + def test_each_codepoint + # Single byte optimization + assert_equal 65, S("ABC").each_codepoint.next + + s = S("\u3042\u3044\u3046") + + res = [] + assert_equal s.object_id, s.each_codepoint {|x| res << x }.object_id + assert_equal(0x3042, res[0]) + assert_equal(0x3044, res[1]) + assert_equal(0x3046, res[2]) + + assert_equal 0x3042, s.each_codepoint.next + end + + def test_codepoints + # Single byte optimization + assert_equal [65, 66, 67], S("ABC").codepoints + + s = S("\u3042\u3044\u3046") + assert_equal [0x3042, 0x3044, 0x3046], s.codepoints + + res = [] + assert_equal s.object_id, s.codepoints {|x| res << x }.object_id + assert_equal(0x3042, res[0]) + assert_equal(0x3044, res[1]) + assert_equal(0x3046, res[2]) + s = S("ABC") + res = [] + assert_same s, s.codepoints {|x| res << x } + assert_equal [65, 66, 67], res + end + + def test_each_char + s = S("ABC") + + res = [] + assert_equal s.object_id, s.each_char {|x| res << x }.object_id + assert_equal("A", res[0]) + assert_equal("B", res[1]) + assert_equal("C", res[2]) + + assert_equal "A", S("ABC").each_char.next + end + + def test_chars + s = S("ABC") + assert_equal ["A", "B", "C"], s.chars + + res = [] + assert_equal s.object_id, s.chars {|x| res << x }.object_id + assert_equal("A", res[0]) + assert_equal("B", res[1]) + assert_equal("C", res[2]) + end + + def test_each_grapheme_cluster + [ + "\u{0D 0A}", + "\u{20 200d}", + "\u{600 600}", + "\u{600 20}", + "\u{261d 1F3FB}", + "\u{1f600}", + "\u{20 308}", + "\u{1F477 1F3FF 200D 2640 FE0F}", + "\u{1F468 200D 1F393}", + "\u{1F46F 200D 2642 FE0F}", + "\u{1f469 200d 2764 fe0f 200d 1f469}", + ].each do |g| + assert_equal [g], g.each_grapheme_cluster.to_a + assert_equal 1, g.each_grapheme_cluster.size + end + + [ + ["\u{a 324}", ["\u000A", "\u0324"]], + ["\u{d 324}", ["\u000D", "\u0324"]], + ["abc", ["a", "b", "c"]], + ].each do |str, grapheme_clusters| + assert_equal grapheme_clusters, str.each_grapheme_cluster.to_a + assert_equal grapheme_clusters.size, str.each_grapheme_cluster.size + end + + s = ("x"+"\u{10ABCD}"*250000) + assert_empty(s.each_grapheme_cluster {s.clear}) + end + + def test_grapheme_clusters + [ + "\u{20 200d}", + "\u{600 600}", + "\u{600 20}", + "\u{261d 1F3FB}", + "\u{1f600}", + "\u{20 308}", + "\u{1F477 1F3FF 200D 2640 FE0F}", + "\u{1F468 200D 1F393}", + "\u{1F46F 200D 2642 FE0F}", + "\u{1f469 200d 2764 fe0f 200d 1f469}", + ].product([Encoding::UTF_8, *WIDE_ENCODINGS]) do |g, enc| + g = g.encode(enc) + assert_equal [g], g.grapheme_clusters + end + + [ + "\u{a 324}", + "\u{d 324}", + "abc", + ].product([Encoding::UTF_8, *WIDE_ENCODINGS]) do |g, enc| + g = g.encode(enc) + assert_equal g.chars, g.grapheme_clusters + end + assert_equal ["a", "b", "c"], S("abc").b.grapheme_clusters + + s = S("ABC").b + res = [] + assert_same s, s.grapheme_clusters {|x| res << x } + assert_equal(3, res.size) + assert_equal("A", res[0]) + assert_equal("B", res[1]) + assert_equal("C", res[2]) + end + + def test_grapheme_clusters_memory_leak + assert_no_memory_leak([], "", "#{<<~"begin;"}\n#{<<~'end;'}", "[Bug #todo]", rss: true) + begin; + str = "hello world".encode(Encoding::UTF_32LE) + + 10_000.times do + str.grapheme_clusters + end + end; + end + + def test_byteslice_grapheme_clusters + string = "안녕" + assert_equal(["안"], string.byteslice(0,4).grapheme_clusters) + end + + def test_each_line + verbose, $VERBOSE = $VERBOSE, nil + + save = $/ + $/ = "\n" + res=[] + S("hello\nworld").each_line {|x| res << x} + assert_equal(S("hello\n"), res[0]) + assert_equal(S("world"), res[1]) + + res=[] + S("hello\n\n\nworld").each_line(S('')) {|x| res << x} + assert_equal(S("hello\n\n"), res[0]) + assert_equal(S("world"), res[1]) + + res=[] + S("hello\r\n\r\nworld").each_line(S('')) {|x| res << x} + assert_equal(S("hello\r\n\r\n"), res[0]) + assert_equal(S("world"), res[1]) + + $/ = "!" + + res=[] + S("hello!world").each_line {|x| res << x} + assert_equal(S("hello!"), res[0]) + assert_equal(S("world"), res[1]) + + $/ = "ab" + + res=[] + S("a").lines.each {|x| res << x} + assert_equal(1, res.size) + assert_equal(S("a"), res[0]) + + $/ = save + + s = nil + S("foo\nbar").each_line(nil) {|s2| s = s2 } + assert_equal("foo\nbar", s) + + assert_equal "hello\n", S("hello\nworld").each_line.next + assert_equal "hello\nworld", S("hello\nworld").each_line(nil).next + + bug7646 = "[ruby-dev:46827]" + assert_nothing_raised(bug7646) do + S("\n\u0100").each_line("\n") {} + end + ensure + $/ = save + $VERBOSE = verbose + end + + def test_each_line_chomp + res = [] + S("hello\nworld").each_line("\n", chomp: true) {|x| res << x} + assert_equal(S("hello"), res[0]) + assert_equal(S("world"), res[1]) + + res = [] + S("hello\n\n\nworld\n").each_line(S(''), chomp: true) {|x| res << x} + assert_equal(S("hello"), res[0]) + assert_equal(S("world\n"), res[1]) + + res = [] + S("hello\r\n\r\nworld\r\n").each_line(S(''), chomp: true) {|x| res << x} + assert_equal(S("hello"), res[0]) + assert_equal(S("world\r\n"), res[1]) + + res = [] + S("hello\r\n\n\nworld").each_line(S(''), chomp: true) {|x| res << x} + assert_equal(S("hello"), res[0]) + assert_equal(S("world"), res[1]) + + res = [] + S("hello!world").each_line(S('!'), chomp: true) {|x| res << x} + assert_equal(S("hello"), res[0]) + assert_equal(S("world"), res[1]) + + res = [] + S("a").each_line(S('ab'), chomp: true).each {|x| res << x} + assert_equal(1, res.size) + assert_equal(S("a"), res[0]) + + s = nil + S("foo\nbar").each_line(nil, chomp: true) {|s2| s = s2 } + assert_equal("foo\nbar", s) + + assert_equal "hello", S("hello\nworld").each_line(chomp: true).next + assert_equal "hello\nworld", S("hello\nworld").each_line(nil, chomp: true).next + + res = [] + S("").each_line(chomp: true) {|x| res << x} + assert_equal([], res) + + res = [] + S("\n").each_line(chomp: true) {|x| res << x} + assert_equal([S("")], res) + + res = [] + S("\r\n").each_line(chomp: true) {|x| res << x} + assert_equal([S("")], res) + + res = [] + S("a\n b\n").each_line(" ", chomp: true) {|x| res << x} + assert_equal([S("a\n"), S("b\n")], res) + end + + def test_lines + s = S("hello\nworld") + assert_equal ["hello\n", "world"], s.lines + assert_equal ["hello\nworld"], s.lines(nil) + + res = [] + assert_equal s.object_id, s.lines {|x| res << x }.object_id + assert_equal(S("hello\n"), res[0]) + assert_equal(S("world"), res[1]) + end + + def test_empty? + assert_empty(S("")) + assert_not_empty(S("not")) + end + + def test_end_with? + assert_send([S("hello"), :end_with?, S("llo")]) + assert_not_send([S("hello"), :end_with?, S("ll")]) + assert_send([S("hello"), :end_with?, S("el"), S("lo")]) + assert_send([S("hello"), :end_with?, S("")]) + assert_not_send([S("hello"), :end_with?]) + + bug5536 = '[ruby-core:40623]' + assert_raise(TypeError, bug5536) {S("str").end_with? :not_convertible_to_string} + end + + def test_eql? + a = S("hello") + assert_operator(a, :eql?, S("hello")) + assert_operator(a, :eql?, a) + end + + def test_gsub + assert_equal(S("h*ll*"), S("hello").gsub(/[aeiou]/, S('*'))) + assert_equal(S("h<e>ll<o>"), S("hello").gsub(/([aeiou])/, S('<\1>'))) + assert_equal(S("h e l l o "), + S("hello").gsub(/./) { |s| s[0].to_s + S(' ')}) + assert_equal(S("HELL-o"), + S("hello").gsub(/(hell)(.)/) { |s| $1.upcase + S('-') + $2 }) + assert_equal(S("<>h<>e<>l<>l<>o<>"), S("hello").gsub(S(''), S('<\0>'))) + + assert_equal("z", S("abc").gsub(/./, "a" => "z"), "moved from btest/knownbug") + + assert_raise(ArgumentError) { S("foo").gsub } + end + + def test_gsub_gc_compact_stress + omit "compaction doesn't work well on s390x" if RUBY_PLATFORM =~ /s390x/ # https://github.com/ruby/ruby/pull/5077 + EnvUtil.under_gc_compact_stress { assert_equal(S("h<e>ll<o>"), S("hello").gsub(/([aeiou])/, S('<\1>'))) } + end + + def test_gsub_encoding + a = S("hello world") + a.force_encoding Encoding::UTF_8 + + b = S("hi") + b.force_encoding Encoding::US_ASCII + + assert_equal Encoding::UTF_8, a.gsub(/hello/, b).encoding + + c = S("everybody") + c.force_encoding Encoding::US_ASCII + + assert_equal Encoding::UTF_8, a.gsub(/world/, c).encoding + + assert_equal S("a\u{e9}apos<"), S("a\u{e9}'<").gsub("'", "apos") + + bug9849 = '[ruby-core:62669] [Bug #9849]' + assert_equal S("\u{3042 3042 3042}!foo!"), S("\u{3042 3042 3042}/foo/").gsub("/", "!"), bug9849 + end + + def test_gsub! + a = S("hello") + b = a.dup + a.gsub!(/[aeiou]/, S('*')) + assert_equal(S("h*ll*"), a) + assert_equal(S("hello"), b) + + a = S("hello") + a.gsub!(/([aeiou])/, S('<\1>')) + assert_equal(S("h<e>ll<o>"), a) + + a = S("hello") + a.gsub!(/./) { |s| s[0].to_s + S(' ')} + assert_equal(S("h e l l o "), a) + + a = S("hello") + a.gsub!(/(hell)(.)/) { |s| $1.upcase + S('-') + $2 } + assert_equal(S("HELL-o"), a) + + a = S("hello") + assert_nil(a.sub!(S('X'), S('Y'))) + end + + def test_gsub_bang_gc_compact_stress + omit "compaction doesn't work well on s390x" if RUBY_PLATFORM =~ /s390x/ # https://github.com/ruby/ruby/pull/5077 + EnvUtil.under_gc_compact_stress do + a = S("hello") + a.gsub!(/([aeiou])/, S('<\1>')) + assert_equal(S("h<e>ll<o>"), a) + end + end + + def test_sub_hash + assert_equal('azc', S('abc').sub(/b/, "b" => "z")) + assert_equal('ac', S('abc').sub(/b/, {})) + assert_equal('a1c', S('abc').sub(/b/, "b" => 1)) + assert_equal('aBc', S('abc').sub(/b/, Hash.new {|h, k| k.upcase })) + assert_equal('a[\&]c', S('abc').sub(/b/, "b" => '[\&]')) + assert_equal('aBcabc', S('abcabc').sub(/b/, Hash.new {|h, k| h[k] = k.upcase })) + assert_equal('aBcdef', S('abcdef').sub(/de|b/, "b" => "B", "de" => "DE")) + end + + def test_gsub_hash + assert_equal('azc', S('abc').gsub(/b/, "b" => "z")) + assert_equal('ac', S('abc').gsub(/b/, {})) + assert_equal('a1c', S('abc').gsub(/b/, "b" => 1)) + assert_equal('aBc', S('abc').gsub(/b/, Hash.new {|h, k| k.upcase })) + assert_equal('a[\&]c', S('abc').gsub(/b/, "b" => '[\&]')) + assert_equal('aBcaBc', S('abcabc').gsub(/b/, Hash.new {|h, k| h[k] = k.upcase })) + assert_equal('aBcDEf', S('abcdef').gsub(/de|b/, "b" => "B", "de" => "DE")) + end + + def test_hash + assert_equal(S("hello").hash, S("hello").hash) + assert_not_equal(S("hello").hash, S("helLO").hash) + bug4104 = '[ruby-core:33500]' + assert_not_equal(S("a").hash, S("a\0").hash, bug4104) + bug9172 = '[ruby-core:58658] [Bug #9172]' + assert_not_equal(S("sub-setter").hash, S("discover").hash, bug9172) + assert_equal(S("").hash, S("".encode(Encoding::UTF_32BE)).hash) + h1, h2 = ["\x80", "\x81"].map {|c| c.b.hash ^ c.hash} + assert_not_equal(h1, h2) + end + + def test_hex + assert_equal(255, S("0xff").hex) + assert_equal(-255, S("-0xff").hex) + assert_equal(255, S("ff").hex) + assert_equal(-255, S("-ff").hex) + assert_equal(0, S("-ralph").hex) + assert_equal(-15, S("-fred").hex) + assert_equal(15, S("fred").hex) + end + + def test_include? + assert_include(S("foobar"), ?f) + assert_include(S("foobar"), S("foo")) + assert_not_include(S("foobar"), S("baz")) + assert_not_include(S("foobar"), ?z) + end + + def test_index + assert_index(0, S("hello"), ?h) + assert_index(1, S("hello"), S("ell")) + assert_index(2, S("hello"), /ll./) + + assert_index(3, S("hello"), ?l, 3) + assert_index(3, S("hello"), S("l"), 3) + assert_index(3, S("hello"), /l./, 3) + + assert_index(nil, S("hello"), ?z, 3) + assert_index(nil, S("hello"), S("z"), 3) + assert_index(nil, S("hello"), /z./, 3) + + assert_index(nil, S("hello"), ?z) + assert_index(nil, S("hello"), S("z")) + assert_index(nil, S("hello"), /z./) + + assert_index(0, S(""), S("")) + assert_index(0, S(""), //) + assert_index(nil, S(""), S("hello")) + assert_index(nil, S(""), /hello/) + assert_index(0, S("hello"), S("")) + assert_index(0, S("hello"), //) + + s = S("long") * 1000 << "x" + assert_index(nil, s, S("y")) + assert_index(4 * 1000, s, S("x")) + s << "yx" + assert_index(4 * 1000, s, S("x")) + assert_index(4 * 1000, s, S("xyx")) + + o = Object.new + def o.to_str; "bar"; end + assert_index(3, S("foobarbarbaz"), o) + assert_raise(TypeError) { S("foo").index(Object.new) } + + assert_index(nil, S("foo"), //, -100) + assert_index(nil, S("foo"), //, 4) + + assert_index(2, S("abcdbce"), /b\Kc/) + + assert_index(0, S("こんにちは"), ?こ) + assert_index(1, S("こんにちは"), S("んにち")) + assert_index(2, S("こんにちは"), /にち./) + + assert_index(0, S("にんにちは"), ?に, 0) + assert_index(2, S("にんにちは"), ?に, 1) + assert_index(2, S("にんにちは"), ?に, 2) + assert_index(nil, S("にんにちは"), ?に, 3) + end + + def test_insert + assert_equal("Xabcd", S("abcd").insert(0, 'X')) + assert_equal("abcXd", S("abcd").insert(3, 'X')) + assert_equal("abcdX", S("abcd").insert(4, 'X')) + assert_equal("abXcd", S("abcd").insert(-3, 'X')) + assert_equal("abcdX", S("abcd").insert(-1, 'X')) + end + + def test_intern + assert_equal(:koala, S("koala").intern) + assert_not_equal(:koala, S("Koala").intern) + end + + def test_length + assert_equal(0, S("").length) + assert_equal(4, S("1234").length) + assert_equal(6, S("1234\r\n").length) + assert_equal(7, S("\0011234\r\n").length) + end + + def test_ljust + assert_equal(S("hello"), S("hello").ljust(4)) + assert_equal(S("hello "), S("hello").ljust(11)) + assert_equal(S("ababababab"), S("").ljust(10, "ab"), Bug2463) + assert_equal(S("abababababa"), S("").ljust(11, "ab"), Bug2463) + end + + def test_next + assert_equal(S("abd"), S("abc").next) + assert_equal(S("z"), S("y").next) + assert_equal(S("aaa"), S("zz").next) + + assert_equal(S("124"), S("123").next) + assert_equal(S("1000"), S("999").next) + + assert_equal(S("2000aaa"), S("1999zzz").next) + assert_equal(S("AAAAA000"), S("ZZZZ999").next) + + assert_equal(S("*+"), S("**").next) + + assert_equal(S("!"), S(" ").next) + assert_equal(S(""), S("").next) + end + + def test_next! + a = S("abc") + b = a.dup + assert_equal(S("abd"), a.next!) + assert_equal(S("abd"), a) + assert_equal(S("abc"), b) + + a = S("y") + assert_equal(S("z"), a.next!) + assert_equal(S("z"), a) + + a = S("zz") + assert_equal(S("aaa"), a.next!) + assert_equal(S("aaa"), a) + + a = S("123") + assert_equal(S("124"), a.next!) + assert_equal(S("124"), a) + + a = S("999") + assert_equal(S("1000"), a.next!) + assert_equal(S("1000"), a) + + a = S("1999zzz") + assert_equal(S("2000aaa"), a.next!) + assert_equal(S("2000aaa"), a) + + a = S("ZZZZ999") + assert_equal(S("AAAAA000"), a.next!) + assert_equal(S("AAAAA000"), a) + + a = S("**") + assert_equal(S("*+"), a.next!) + assert_equal(S("*+"), a) + + a = S(" ") + assert_equal(S("!"), a.next!) + assert_equal(S("!"), a) + end + + def test_oct + assert_equal(255, S("0377").oct) + assert_equal(255, S("377").oct) + assert_equal(-255, S("-0377").oct) + assert_equal(-255, S("-377").oct) + assert_equal(0, S("OO").oct) + assert_equal(24, S("030OO").oct) + end + + def test_replace + a = S("foo") + assert_equal(S("f"), a.replace(S("f"))) + + a = S("foo") + assert_equal(S("foobar"), a.replace(S("foobar"))) + + a = S("foo") + b = a.replace(S("xyz")) + assert_equal(S("xyz"), b) + + s = S("foo") * 100 + s2 = ("bar" * 100).dup + s.replace(s2) + assert_equal(s2, s) + + s2 = [S("foo")].pack("p") + s.replace(s2) + assert_equal(s2, s) + + fs = S("").freeze + assert_raise(FrozenError) { fs.replace("a") } + assert_raise(FrozenError) { fs.replace(fs) } + assert_raise(ArgumentError) { fs.replace() } + assert_raise(FrozenError) { fs.replace(42) } + end + + def test_reverse + assert_equal(S("beta"), S("ateb").reverse) + assert_equal(S("madamImadam"), S("madamImadam").reverse) + + a=S("beta") + assert_equal(S("ateb"), a.reverse) + assert_equal(S("beta"), a) + end + + def test_reverse! + a = S("beta") + b = a.dup + assert_equal(S("ateb"), a.reverse!) + assert_equal(S("ateb"), a) + assert_equal(S("beta"), b) + + assert_equal(S("madamImadam"), S("madamImadam").reverse!) + + a = S("madamImadam") + assert_equal(S("madamImadam"), a.reverse!) # ?? + assert_equal(S("madamImadam"), a) + end + + def test_rindex + assert_rindex(3, S("hello"), ?l) + assert_rindex(6, S("ell, hello"), S("ell")) + assert_rindex(7, S("ell, hello"), /ll./) + + assert_rindex(3, S("hello,lo"), ?l, 3) + assert_rindex(3, S("hello,lo"), S("l"), 3) + assert_rindex(3, S("hello,lo"), /l./, 3) + + assert_rindex(nil, S("hello"), ?z, 3) + assert_rindex(nil, S("hello"), S("z"), 3) + assert_rindex(nil, S("hello"), /z./, 3) + + assert_rindex(nil, S("hello"), ?z) + assert_rindex(nil, S("hello"), S("z")) + assert_rindex(nil, S("hello"), /z./) + + assert_rindex(5, S("hello"), S("")) + assert_rindex(5, S("hello"), S(""), 5) + assert_rindex(4, S("hello"), S(""), 4) + assert_rindex(0, S("hello"), S(""), 0) + + o = Object.new + def o.to_str; "bar"; end + assert_rindex(6, S("foobarbarbaz"), o) + assert_raise(TypeError) { S("foo").rindex(Object.new) } + + assert_rindex(nil, S("foo"), //, -100) + + m = assert_rindex(3, S("foo"), //) + assert_equal([3, 3], m.offset(0)) + assert_rindex(3, S("foo"), //, 4) + + assert_rindex(5, S("abcdbce"), /b\Kc/) + + assert_rindex(2, S("こんにちは"), ?に) + assert_rindex(6, S("にちは、こんにちは"), S("にちは")) + assert_rindex(6, S("にちは、こんにちは"), /にち./) + + assert_rindex(6, S("にちは、こんにちは"), S("にちは"), 7) + assert_rindex(6, S("にちは、こんにちは"), S("にちは"), -2) + assert_rindex(6, S("にちは、こんにちは"), S("にちは"), 6) + assert_rindex(6, S("にちは、こんにちは"), S("にちは"), -3) + assert_rindex(0, S("にちは、こんにちは"), S("にちは"), 5) + assert_rindex(0, S("にちは、こんにちは"), S("にちは"), -4) + assert_rindex(0, S("にちは、こんにちは"), S("にちは"), 1) + assert_rindex(0, S("にちは、こんにちは"), S("にちは"), 0) + + assert_rindex(0, S("こんにちは"), S("こんにちは")) + assert_rindex(nil, S("こんにち"), S("こんにちは")) + assert_rindex(nil, S("こ"), S("こんにちは")) + assert_rindex(nil, S(""), S("こんにちは")) + end + + def test_rjust + assert_equal(S("hello"), S("hello").rjust(4)) + assert_equal(S(" hello"), S("hello").rjust(11)) + assert_equal(S("ababababab"), S("").rjust(10, "ab"), Bug2463) + assert_equal(S("abababababa"), S("").rjust(11, "ab"), Bug2463) + end + + def test_scan + a = S("cruel world") + assert_equal([S("cruel"), S("world")],a.scan(/\w+/)) + assert_equal([S("cru"), S("el "), S("wor")],a.scan(/.../)) + assert_equal([[S("cru")], [S("el ")], [S("wor")]],a.scan(/(...)/)) + + res = [] + a.scan(/\w+/) { |w| res << w } + assert_equal([S("cruel"), S("world") ],res) + + res = [] + a.scan(/.../) { |w| res << w } + assert_equal([S("cru"), S("el "), S("wor")],res) + + res = [] + a.scan(/(...)/) { |w| res << w } + assert_equal([[S("cru")], [S("el ")], [S("wor")]],res) + + /h/ =~ a + a.scan(/x/) + assert_nil($~) + + /h/ =~ a + a.scan('x') + assert_nil($~) + + assert_equal(%w[1 2 3], S("a1 a2 a3").scan(/a\K./)) + end + + def test_scan_gc_compact_stress + omit "compaction doesn't work well on s390x" if RUBY_PLATFORM =~ /s390x/ # https://github.com/ruby/ruby/pull/5077 + EnvUtil.under_gc_compact_stress { assert_equal([["1a"], ["2b"], ["3c"]], S("1a2b3c").scan(/(\d.)/)) } + end + + def test_scan_segv + bug19159 = '[Bug #19159]' + assert_nothing_raised(Exception, bug19159) do + ObjectSpace.each_object(MatchData).to_a + "".scan(//) + ObjectSpace.each_object(MatchData).to_a.inspect + end + end + + def test_size + assert_equal(0, S("").size) + assert_equal(4, S("1234").size) + assert_equal(6, S("1234\r\n").size) + assert_equal(7, S("\0011234\r\n").size) + end + + def test_slice + assert_equal(?A, S("AooBar").slice(0)) + assert_equal(?B, S("FooBaB").slice(-1)) + assert_nil(S("FooBar").slice(6)) + assert_nil(S("FooBar").slice(-7)) + + assert_equal(S("Foo"), S("FooBar").slice(0,3)) + assert_equal(S(S("Bar")), S("FooBar").slice(-3,3)) + assert_nil(S("FooBar").slice(7,2)) # Maybe should be six? + assert_nil(S("FooBar").slice(-7,10)) + + assert_equal(S("Foo"), S("FooBar").slice(0..2)) + assert_equal(S("Bar"), S("FooBar").slice(-3..-1)) + assert_equal(S(""), S("FooBar").slice(6..2)) + assert_nil(S("FooBar").slice(-10..-7)) + + assert_equal(S("Foo"), S("FooBar").slice(/^F../)) + assert_equal(S("Bar"), S("FooBar").slice(/..r$/)) + assert_nil(S("FooBar").slice(/xyzzy/)) + assert_nil(S("FooBar").slice(/plugh/)) + + assert_equal(S("Foo"), S("FooBar").slice(S("Foo"))) + assert_equal(S("Bar"), S("FooBar").slice(S("Bar"))) + assert_nil(S("FooBar").slice(S("xyzzy"))) + assert_nil(S("FooBar").slice(S("plugh"))) + + bug9882 = '[ruby-core:62842] [Bug #9882]' + substr = S("\u{30c6 30b9 30c8 2019}#{bug9882}").slice(4..-1) + assert_equal(S(bug9882).hash, substr.hash, bug9882) + assert_predicate(substr, :ascii_only?, bug9882) + end + + def test_slice! + a = S("AooBar") + b = a.dup + assert_equal(?A, a.slice!(0)) + assert_equal(S("ooBar"), a) + assert_equal(S("AooBar"), b) + + a = S("FooBar") + assert_equal(?r,a.slice!(-1)) + assert_equal(S("FooBa"), a) + + a = S("FooBar") + assert_nil( a.slice!(6) ) + assert_nil( a.slice!(6r) ) + assert_equal(S("FooBar"), a) + + assert_nil( a.slice!(-7) ) + assert_equal(S("FooBar"), a) + + a = S("FooBar") + assert_equal(S("Foo"), a.slice!(0,3)) + assert_equal(S("Bar"), a) + + a = S("FooBar") + assert_equal(S("Bar"), a.slice!(-3,3)) + assert_equal(S("Foo"), a) + + a=S("FooBar") + assert_nil(a.slice!(7,2)) # Maybe should be six? + assert_equal(S("FooBar"), a) + assert_nil(a.slice!(-7,10)) + assert_equal(S("FooBar"), a) + + a=S("FooBar") + assert_equal(S("Foo"), a.slice!(0..2)) + assert_equal(S("Bar"), a) + + a=S("FooBar") + assert_equal(S("Bar"), a.slice!(-3..-1)) + assert_equal(S("Foo"), a) + + a=S("FooBar") + assert_equal(S(""), a.slice!(6..2)) + assert_equal(S("FooBar"), a) + assert_nil(a.slice!(-10..-7)) + assert_equal(S("FooBar"), a) + + a=S("FooBar") + assert_equal(S("Foo"), a.slice!(/^F../)) + assert_equal(S("Bar"), a) + + a=S("FooBar") + assert_equal(S("Bar"), a.slice!(/..r$/)) + assert_equal(S("Foo"), a) + + a=S("FooBar") + assert_nil(a.slice!(/xyzzy/)) + assert_equal(S("FooBar"), a) + assert_nil(a.slice!(/plugh/)) + assert_equal(S("FooBar"), a) + + a=S("FooBar") + assert_equal(S("Foo"), a.slice!(S("Foo"))) + assert_equal(S("Bar"), a) + + a=S("FooBar") + assert_equal(S("Bar"), a.slice!(S("Bar"))) + assert_equal(S("Foo"), a) + + a = S("foo") + assert_raise(ArgumentError) { a.slice! } + end + + def test_split + fs, $; = $;, nil + assert_equal([S("a"), S("b"), S("c")], S(" a b\t c ").split) + assert_equal([S("a"), S("b"), S("c")], S(" a b\t c ").split(S(" "))) + + assert_equal([S(" a "), S(" b "), S(" c ")], S(" a | b | c ").split(S("|"))) + + assert_equal([S("a"), S("b"), S("c")], S("aXXbXXcXX").split(/X./)) + + assert_equal([S("a"), S("b"), S("c")], S("abc").split(//)) + + assert_equal([S("a|b|c")], S("a|b|c").split(S('|'), 1)) + + assert_equal([S("a"), S("b|c")], S("a|b|c").split(S('|'), 2)) + assert_equal([S("a"), S("b"), S("c")], S("a|b|c").split(S('|'), 3)) + + assert_equal([S("a"), S("b"), S("c"), S("")], S("a|b|c|").split(S('|'), -1)) + assert_equal([S("a"), S("b"), S("c"), S(""), S("")], S("a|b|c||").split(S('|'), -1)) + + assert_equal([S("a"), S(""), S("b"), S("c")], S("a||b|c|").split(S('|'))) + assert_equal([S("a"), S(""), S("b"), S("c"), S("")], S("a||b|c|").split(S('|'), -1)) + + assert_equal([], S("").split(//, 1)) + ensure + EnvUtil.suppress_warning {$; = fs} + end + + def test_split_with_block + fs, $; = $;, nil + result = []; S(" a b\t c ").split {|s| result << s} + assert_equal([S("a"), S("b"), S("c")], result) + result = []; S(" a b\t c ").split(S(" ")) {|s| result << s} + assert_equal([S("a"), S("b"), S("c")], result) + + result = []; S(" a | b | c ").split(S("|")) {|s| result << s} + assert_equal([S(" a "), S(" b "), S(" c ")], result) + + result = []; S("aXXbXXcXX").split(/X./) {|s| result << s} + assert_equal([S("a"), S("b"), S("c")], result) + + result = []; S("abc").split(//) {|s| result << s} + assert_equal([S("a"), S("b"), S("c")], result) + + result = []; S("a|b|c").split(S('|'), 1) {|s| result << s} + assert_equal([S("a|b|c")], result) + + result = []; S("a|b|c").split(S('|'), 2) {|s| result << s} + assert_equal([S("a"), S("b|c")], result) + result = []; S("a|b|c").split(S('|'), 3) {|s| result << s} + assert_equal([S("a"), S("b"), S("c")], result) + + result = []; S("a|b|c|").split(S('|'), -1) {|s| result << s} + assert_equal([S("a"), S("b"), S("c"), S("")], result) + result = []; S("a|b|c||").split(S('|'), -1) {|s| result << s} + assert_equal([S("a"), S("b"), S("c"), S(""), S("")], result) + + result = []; S("a||b|c|").split(S('|')) {|s| result << s} + assert_equal([S("a"), S(""), S("b"), S("c")], result) + result = []; S("a||b|c|").split(S('|'), -1) {|s| result << s} + assert_equal([S("a"), S(""), S("b"), S("c"), S("")], result) + + result = []; S("").split(//, 1) {|s| result << s} + assert_equal([], result) + + result = []; S("aaa,bbb,ccc,ddd").split(/,/) {|s| result << s.gsub(/./, "A")} + assert_equal(["AAA"]*4, result) + + s = S("abc ") * 20 + assert_raise(RuntimeError) { + 10.times do + s.split {s.prepend("xxx" * 100)} + end + } + ensure + EnvUtil.suppress_warning {$; = fs} + end + + def test_fs + return unless @cls == String + + begin + fs = $; + assert_deprecated_warning(/non-nil '\$;'/) {$; = "x"} + assert_raise_with_message(TypeError, /\$;/) {$; = []} + ensure + EnvUtil.suppress_warning {$; = fs} + end + name = "\u{5206 5217}" + assert_separately([], "#{<<~"do;"}\n#{<<~"end;"}") + do; + alias $#{name} $; + assert_deprecated_warning(/\\$#{name}/) { $#{name} = "" } + assert_raise_with_message(TypeError, /\\$#{name}/) { $#{name} = 1 } + end; + end + + def test_fs_gc + return unless @cls == String + + assert_separately(%W[-W0], "#{<<~"begin;"}\n#{<<~'end;'}") + bug = '[ruby-core:79582] $; must not be GCed' + begin; + $; = " " + $a = nil + alias $; $a + alias $-F $a + GC.start + assert_equal([], "".split, bug) + end; + end + + def test_split_encoding + bug6206 = '[ruby-dev:45441]' + Encoding.list.each do |enc| + next unless enc.ascii_compatible? + s = S("a:".force_encoding(enc)) + assert_equal([enc]*2, s.split(":", 2).map(&:encoding), bug6206) + end + end + + def test_split_wchar + bug8642 = '[ruby-core:56036] [Bug #8642]' + WIDE_ENCODINGS.each do |enc| + s = S("abc,def".encode(enc)) + assert_equal(["abc", "def"].map {|c| c.encode(enc)}, + s.split(",".encode(enc)), + "#{bug8642} in #{enc.name}") + end + end + + def test_split_invalid_sequence + bug10886 = '[ruby-core:68229] [Bug #10886]' + broken = S("\xa1".force_encoding("utf-8")) + assert_raise(ArgumentError, bug10886) { + S("a,b").split(broken) + } + end + + def test_split_invalid_argument + assert_raise(TypeError) { + S("a,b").split(BasicObject.new) + } + end + + def test_split_dupped + s = "abc" + s.split("b", 1).map(&:upcase!) + assert_equal("abc", s) + end + + def test_split_lookbehind + assert_equal([S("ab"), S("d")], S("abcd").split(/(?<=b)c/)) + assert_equal([S("ab"), S("d")], S("abcd").split(/b\Kc/)) + end + + def test_squeeze + assert_equal(S("abc"), S("aaabbbbccc").squeeze) + assert_equal(S("aa bb cc"), S("aa bb cc").squeeze(S(" "))) + assert_equal(S("BxTyWz"), S("BxxxTyyyWzzzzz").squeeze(S("a-z"))) + end + + def test_squeeze! + a = S("aaabbbbccc") + b = a.dup + assert_equal(S("abc"), a.squeeze!) + assert_equal(S("abc"), a) + assert_equal(S("aaabbbbccc"), b) + + a = S("aa bb cc") + assert_equal(S("aa bb cc"), a.squeeze!(S(" "))) + assert_equal(S("aa bb cc"), a) + + a = S("BxxxTyyyWzzzzz") + assert_equal(S("BxTyWz"), a.squeeze!(S("a-z"))) + assert_equal(S("BxTyWz"), a) + + a=S("The quick brown fox") + assert_nil(a.squeeze!) + end + + def test_start_with? + assert_send([S("hello"), :start_with?, S("hel")]) + assert_not_send([S("hello"), :start_with?, S("el")]) + assert_send([S("hello"), :start_with?, S("el"), S("he")]) + assert_send([S("\xFF\xFE"), :start_with?, S("\xFF")]) + assert_send([S("hello\xBE"), :start_with?, S("hello")]) + assert_not_send([S("\u{c4}"), :start_with?, S("\xC3")]) + + bug5536 = '[ruby-core:40623]' + assert_raise(TypeError, bug5536) {S("str").start_with? :not_convertible_to_string} + end + + def test_start_with_regexp + assert_equal(true, S("hello").start_with?(/hel/)) + assert_equal("hel", $&) + assert_equal(false, S("hello").start_with?(/el/)) + assert_nil($&) + end + + def test_start_with_timeout_memory_leak + assert_no_memory_leak([], "#{<<~"begin;"}", "#{<<~'end;'}", "[Bug #20653]", rss: true) + regex = Regexp.new("^#{"(a*)" * 10_000}x$", timeout: 0.000001) + str = "a" * 1_000_000 + "x" + + code = proc do + str.start_with?(regex) + rescue + end + + 10.times(&code) + begin; + 1_000.times(&code) + end; + end + + def test_strip + assert_equal(S("x"), S(" x ").strip) + assert_equal(S("x"), S(" \n\r\t x \t\r\n\n ").strip) + assert_equal(S("x"), S("\x00x\x00").strip) + + assert_equal("0b0 ".force_encoding("UTF-16BE"), + S("\x00 0b0 ").force_encoding("UTF-16BE").strip) + assert_equal("0\x000b0 ".force_encoding("UTF-16BE"), + S("0\x000b0 ").force_encoding("UTF-16BE").strip) + end + + def test_strip! + a = S(" x ") + b = a.dup + assert_equal(S("x") ,a.strip!) + assert_equal(S("x") ,a) + assert_equal(S(" x "), b) + + a = S(" \n\r\t x \t\r\n\n ") + assert_equal(S("x"), a.strip!) + assert_equal(S("x"), a) + + a = S("\x00x\x00") + assert_equal(S("x"), a.strip!) + assert_equal(S("x"), a) + + a = S("x") + assert_nil(a.strip!) + assert_equal(S("x") ,a) + end + + def test_strip_with_selectors + assert_equal(S("abc"), S("---abc+++").strip("-+")) + assert_equal(S("abc"), S("+++abc---").strip("-+")) + assert_equal(S("abc"), S("+-+abc-+-").strip("-+")) + assert_equal(S(""), S("---+++").strip("-+")) + assert_equal(S("abc "), S("---abc ").strip("-")) + assert_equal(S(" abc"), S(" abc+++").strip("+")) + + # Test with multibyte characters + assert_equal(S("abc"), S("あああabcいいい").strip("あい")) + assert_equal(S("abc"), S("いいいabcあああ").strip("あい")) + + # Test with NUL characters + assert_equal(S("abc\0"), S("---abc\0--").strip("-")) + assert_equal(S("\0abc"), S("--\0abc---").strip("-")) + + # Test without modification + assert_equal(S("abc"), S("abc").strip("-+")) + assert_equal(S("abc"), S("abc").strip("")) + + # Test with range + assert_equal(S("abc"), S("012abc345").strip("0-9")) + assert_equal(S("abc"), S("012abc345").strip("^a-z")) + + # Test with multiple selectors + assert_equal(S("4abc56"), S("01234abc56789").strip("0-9", "^4-6")) + end + + def test_strip_bang_with_chars + a = S("---abc+++") + assert_equal(S("abc"), a.strip!("-+")) + assert_equal(S("abc"), a) + + a = S("+++abc---") + assert_equal(S("abc"), a.strip!("-+")) + assert_equal(S("abc"), a) + + a = S("abc") + assert_nil(a.strip!("-+")) + assert_equal(S("abc"), a) + + # Test with multibyte characters + a = S("あああabcいいい") + assert_equal(S("abc"), a.strip!("あい")) + assert_equal(S("abc"), a) + end + + def test_lstrip_with_selectors + assert_equal(S("abc+++"), S("---abc+++").lstrip("-")) + assert_equal(S("abc---"), S("+++abc---").lstrip("+")) + assert_equal(S("abc"), S("---abc").lstrip("-")) + assert_equal(S(""), S("---").lstrip("-")) + + # Test with multibyte characters + assert_equal(S("abcいいい"), S("あああabcいいい").lstrip("あ")) + + # Test with NUL characters + assert_equal(S("\0abc+++"), S("--\0abc+++").lstrip("-")) + + # Test without modification + assert_equal(S("abc"), S("abc").lstrip("-")) + + # Test with range + assert_equal(S("abc345"), S("012abc345").lstrip("0-9")) + + # Test with multiple selectors + assert_equal(S("4abc56789"), S("01234abc56789").lstrip("0-9", "^4-6")) + end + + def test_lstrip_bang_with_chars + a = S("---abc+++") + assert_equal(S("abc+++"), a.lstrip!("-")) + assert_equal(S("abc+++"), a) + + a = S("abc") + assert_nil(a.lstrip!("-")) + assert_equal(S("abc"), a) + end + + def test_rstrip_with_selectors + assert_equal(S("---abc"), S("---abc+++").rstrip("+")) + assert_equal(S("+++abc"), S("+++abc---").rstrip("-")) + assert_equal(S("abc"), S("abc+++").rstrip("+")) + assert_equal(S(""), S("+++").rstrip("+")) + + # Test with multibyte characters + assert_equal(S("あああabc"), S("あああabcいいい").rstrip("い")) + + # Test with NUL characters + assert_equal(S("---abc\0"), S("---abc\0++").rstrip("+")) + + # Test without modification + assert_equal(S("abc"), S("abc").rstrip("-")) + + # Test with range + assert_equal(S("012abc"), S("012abc345").rstrip("0-9")) + + # Test with multiple selectors + assert_equal(S("01234abc56"), S("01234abc56789").rstrip("0-9", "^4-6")) + end + + def test_rstrip_bang_with_chars + a = S("---abc+++") + assert_equal(S("---abc"), a.rstrip!("+")) + assert_equal(S("---abc"), a) + + a = S("abc") + assert_nil(a.rstrip!("+")) + assert_equal(S("abc"), a) + end + + def test_sub + assert_equal(S("h*llo"), S("hello").sub(/[aeiou]/, S('*'))) + assert_equal(S("h<e>llo"), S("hello").sub(/([aeiou])/, S('<\1>'))) + assert_equal(S("h ello"), S("hello").sub(/./) { + |s| s[0].to_s + S(' ')}) + assert_equal(S("HELL-o"), S("hello").sub(/(hell)(.)/) { + |s| $1.upcase + S('-') + $2 + }) + assert_equal(S("h<e>llo"), S("hello").sub('e', S('<\0>'))) + + assert_equal(S("a\\aba"), S("ababa").sub(/b/, '\\')) + assert_equal(S("ab\\aba"), S("ababa").sub(/(b)/, '\1\\')) + assert_equal(S("ababa"), S("ababa").sub(/(b)/, '\1')) + assert_equal(S("ababa"), S("ababa").sub(/(b)/, '\\1')) + assert_equal(S("a\\1aba"), S("ababa").sub(/(b)/, '\\\1')) + assert_equal(S("a\\1aba"), S("ababa").sub(/(b)/, '\\\\1')) + assert_equal(S("a\\baba"), S("ababa").sub(/(b)/, '\\\\\1')) + + assert_equal(S("a--ababababababababab"), + S("abababababababababab").sub(/(b)/, '-\9-')) + assert_equal(S("1-b-0"), + S("1b2b3b4b5b6b7b8b9b0"). + sub(/(b).(b).(b).(b).(b).(b).(b).(b).(b)/, '-\9-')) + assert_equal(S("1-b-0"), + S("1b2b3b4b5b6b7b8b9b0"). + sub(/(b).(b).(b).(b).(b).(b).(b).(b).(b)/, '-\\9-')) + assert_equal(S("1-\\9-0"), + S("1b2b3b4b5b6b7b8b9b0"). + sub(/(b).(b).(b).(b).(b).(b).(b).(b).(b)/, '-\\\9-')) + assert_equal(S("k"), + S("1a2b3c4d5e6f7g8h9iAjBk"). + sub(/.(.).(.).(.).(.).(.).(.).(.).(.).(.).(.).(.)/, '\+')) + + assert_equal(S("ab\\aba"), S("ababa").sub(/b/, '\&\\')) + assert_equal(S("ababa"), S("ababa").sub(/b/, '\&')) + assert_equal(S("ababa"), S("ababa").sub(/b/, '\\&')) + assert_equal(S("a\\&aba"), S("ababa").sub(/b/, '\\\&')) + assert_equal(S("a\\&aba"), S("ababa").sub(/b/, '\\\\&')) + assert_equal(S("a\\baba"), S("ababa").sub(/b/, '\\\\\&')) + + o = Object.new + def o.to_str; "bar"; end + assert_equal("fooBARbaz", S("foobarbaz").sub(o, "BAR")) + + assert_raise(TypeError) { S("foo").sub(Object.new, "") } + + assert_raise(ArgumentError) { S("foo").sub } + + assert_raise(IndexError) { "foo"[/(?:(o$)|(x))/, 2] = 'bar' } + + o = Object.new + def o.to_s; self; end + assert_match(/^foo#<Object:0x.*>baz$/, S("foobarbaz").sub("bar") { o }) + + assert_equal(S("Abc"), S("abc").sub("a", "A")) + m = nil + assert_equal(S("Abc"), S("abc").sub("a") {m = $~; "A"}) + assert_equal(S("a"), m[0]) + assert_equal(/a/, m.regexp) + bug = '[ruby-core:78686] [Bug #13042] other than regexp has no name references' + assert_raise_with_message(IndexError, /oops/, bug) { + S('hello').gsub('hello', '\k<oops>') + } + end + + def test_sub_gc_compact_stress + omit "compaction doesn't work well on s390x" if RUBY_PLATFORM =~ /s390x/ # https://github.com/ruby/ruby/pull/5077 + EnvUtil.under_gc_compact_stress do + m = /&(?<foo>.*?);/.match(S("aaa & yyy")) + assert_equal("amp", m["foo"]) + + assert_equal("aaa [amp] yyy", S("aaa & yyy").sub(/&(?<foo>.*?);/, S('[\k<foo>]'))) + end + end + + def test_sub! + a = S("hello") + b = a.dup + a.sub!(/[aeiou]/, S('*')) + assert_equal(S("h*llo"), a) + assert_equal(S("hello"), b) + + a = S("hello") + a.sub!(/([aeiou])/, S('<\1>')) + assert_equal(S("h<e>llo"), a) + + a = S("hello") + a.sub!(/./) { |s| s[0].to_s + S(' ')} + assert_equal(S("h ello"), a) + + a = S("hello") + a.sub!(/(hell)(.)/) { |s| $1.upcase + S('-') + $2 } + assert_equal(S("HELL-o"), a) + + a=S("hello") + assert_nil(a.sub!(/X/, S('Y'))) + + bug16105 = '[Bug #16105] heap-use-after-free' + a = S("ABCDEFGHIJKLMNOPQRSTUVWXYZ012345678") + b = a.dup + c = a.slice(1, 100) + assert_equal("AABCDEFGHIJKLMNOPQRSTUVWXYZ012345678", b.sub!(c, b), bug16105) + end + + def test_succ + assert_equal(S("abd"), S("abc").succ) + assert_equal(S("z"), S("y").succ) + assert_equal(S("aaa"), S("zz").succ) + + assert_equal(S("124"), S("123").succ) + assert_equal(S("1000"), S("999").succ) + assert_equal(S("2.000"), S("1.999").succ) + + assert_equal(S("No.10"), S("No.9").succ) + assert_equal(S("2000aaa"), S("1999zzz").succ) + assert_equal(S("AAAAA000"), S("ZZZZ999").succ) + assert_equal(S("*+"), S("**").succ) + + assert_equal("abce", S("abcd").succ) + assert_equal("THX1139", S("THX1138").succ) + assert_equal("<\<koalb>>", S("<\<koala>>").succ) + assert_equal("2000aaa", S("1999zzz").succ) + assert_equal("AAAA0000", S("ZZZ9999").succ) + assert_equal("**+", S("***").succ) + + assert_equal("!", S(" ").succ) + assert_equal("", S("").succ) + + bug = '[ruby-core:83062] [Bug #13952]' + s = S("\xff").b + assert_not_predicate(s, :ascii_only?) + assert_predicate(s.succ, :ascii_only?, bug) + end + + def test_succ! + a = S("abc") + b = a.dup + assert_equal(S("abd"), a.succ!) + assert_equal(S("abd"), a) + assert_equal(S("abc"), b) + + a = S("y") + assert_equal(S("z"), a.succ!) + assert_equal(S("z"), a) + + a = S("zz") + assert_equal(S("aaa"), a.succ!) + assert_equal(S("aaa"), a) + + a = S("123") + assert_equal(S("124"), a.succ!) + assert_equal(S("124"), a) + + a = S("999") + assert_equal(S("1000"), a.succ!) + assert_equal(S("1000"), a) + + a = S("1999zzz") + assert_equal(S("2000aaa"), a.succ!) + assert_equal(S("2000aaa"), a) + + a = S("ZZZZ999") + assert_equal(S("AAAAA000"), a.succ!) + assert_equal(S("AAAAA000"), a) + + a = S("**") + assert_equal(S("*+"), a.succ!) + assert_equal(S("*+"), a) + + a = S("No.9") + assert_equal(S("No.10"), a.succ!) + assert_equal(S("No.10"), a) + + a = S(" ") + assert_equal(S("!"), a.succ!) + assert_equal(S("!"), a) + + a = S("") + assert_equal(S(""), a.succ!) + assert_equal(S(""), a) + + assert_equal("aaaaaaaaaaaa", S("zzzzzzzzzzz").succ!) + assert_equal("aaaaaaaaaaaaaaaaaaaaaaaa", S("zzzzzzzzzzzzzzzzzzzzzzz").succ!) + end + + def test_sum + n = S("\001\001\001\001\001\001\001\001\001\001\001\001\001\001\001") + assert_equal(15, n.sum) + n += S("\001") + assert_equal(16, n.sum(17)) + n[0] = 2.chr + assert_not_equal(15, n.sum) + assert_equal(17, n.sum(0)) + assert_equal(17, n.sum(-1)) + end + + def check_sum(str, bits=16) + sum = 0 + str.each_byte {|c| sum += c} + sum = sum & ((1 << bits) - 1) if bits != 0 + assert_equal(sum, str.sum(bits)) + end + + def test_sum_2 + assert_equal(0, S("").sum) + assert_equal(294, S("abc").sum) + check_sum("abc") + check_sum("\x80") + -3.upto(70) {|bits| + check_sum("xyz", bits) + } + end + + def test_sum_long + s8421505 = "\xff" * 8421505 + assert_equal(127, s8421505.sum(31)) + assert_equal(2147483775, s8421505.sum(0)) + s16843010 = ("\xff" * 16843010) + assert_equal(254, s16843010.sum(32)) + assert_equal(4294967550, s16843010.sum(0)) + end + + def test_swapcase + assert_equal(S("hi&LOW"), S("HI&low").swapcase) + s = S("") + assert_not_same(s, s.swapcase) + end + + def test_swapcase! + a = S("hi&LOW") + b = a.dup + assert_equal(S("HI&low"), a.swapcase!) + assert_equal(S("HI&low"), a) + assert_equal(S("hi&LOW"), b) + + a = S("$^#^%$#!!") + assert_nil(a.swapcase!) + assert_equal(S("$^#^%$#!!"), a) + end + + def test_to_f + assert_equal(344.3, S("344.3").to_f) + assert_equal(5.9742e24, S("5.9742e24").to_f) + assert_equal(98.6, S("98.6 degrees").to_f) + assert_equal(0.0, S("degrees 100.0").to_f) + assert_equal([ 0.0].pack('G'), [S(" 0.0").to_f].pack('G')) + assert_equal([-0.0].pack('G'), [S("-0.0").to_f].pack('G')) + end + + def test_to_i + assert_equal(1480, S("1480ft/sec").to_i) + assert_equal(0, S("speed of sound in water @20C = 1480ft/sec)").to_i) + assert_equal(0, S(" 0").to_i) + assert_equal(0, S("+0").to_i) + assert_equal(0, S("-0").to_i) + assert_equal(0, S("--0").to_i) + assert_equal(16, S("0x10").to_i(0)) + assert_equal(16, S("0X10").to_i(0)) + assert_equal(2, S("0b10").to_i(0)) + assert_equal(2, S("0B10").to_i(0)) + assert_equal(8, S("0o10").to_i(0)) + assert_equal(8, S("0O10").to_i(0)) + assert_equal(10, S("0d10").to_i(0)) + assert_equal(10, S("0D10").to_i(0)) + assert_equal(8, S("010").to_i(0)) + assert_raise(ArgumentError) { S("010").to_i(-10) } + 2.upto(36) {|radix| + assert_equal(radix, S("10").to_i(radix)) + assert_equal(radix**2, S("100").to_i(radix)) + } + assert_raise(ArgumentError) { S("0").to_i(1) } + assert_raise(ArgumentError) { S("0").to_i(37) } + assert_equal(0, S("z").to_i(10)) + assert_equal(12, S("1_2").to_i(10)) + assert_equal(0x40000000, S("1073741824").to_i(10)) + assert_equal(0x4000000000000000, S("4611686018427387904").to_i(10)) + assert_equal(1, S("1__2").to_i(10)) + assert_equal(1, S("1_z").to_i(10)) + + bug6192 = '[ruby-core:43566]' + assert_raise(Encoding::CompatibilityError, bug6192) {S("0".encode("utf-16be")).to_i} + assert_raise(Encoding::CompatibilityError, bug6192) {S("0".encode("utf-16le")).to_i} + assert_raise(Encoding::CompatibilityError, bug6192) {S("0".encode("utf-32be")).to_i} + assert_raise(Encoding::CompatibilityError, bug6192) {S("0".encode("utf-32le")).to_i} + assert_raise(Encoding::CompatibilityError, bug6192) {S("0".encode("iso-2022-jp")).to_i} + end + + def test_to_s + a = S("me") + assert_equal("me", a.to_s) + assert_equal(a.__id__, a.to_s.__id__) if @cls == String + end + + def test_to_str + a = S("me") + assert_equal("me", a.to_s) + assert_equal(a.__id__, a.to_s.__id__) if @cls == String + + o = Object.new + def o.to_str + "at" + end + assert_equal("meat", a.concat(o)) + + o = Object.new + def o.to_str + foo_bar() + end + assert_match(/foo_bar/, assert_raise(NoMethodError) {a.concat(o)}.message) + end + + def test_tr + assert_equal(S("hippo"), S("hello").tr(S("el"), S("ip"))) + assert_equal(S("*e**o"), S("hello").tr(S("^aeiou"), S("*"))) + assert_equal(S("hal"), S("ibm").tr(S("b-z"), S("a-z"))) + + a = S("abc".force_encoding(Encoding::US_ASCII)) + assert_equal(Encoding::US_ASCII, a.tr(S("z"), S("\u0101")).encoding, '[ruby-core:22326]') + + assert_equal("a".hash, S("a").tr("a", "\u0101").tr("\u0101", "a").hash, '[ruby-core:22328]') + assert_equal(true, S("\u0101").tr("\u0101", "a").ascii_only?) + assert_equal(true, S("\u3041").tr("\u3041", "a").ascii_only?) + assert_equal(false, S("\u3041\u3042").tr("\u3041", "a").ascii_only?) + + bug6156 = '[ruby-core:43335]' + bug13950 = '[ruby-core:83056] [Bug #13950]' + str, range, star = %w[b a-z *].map{|s|s.encode("utf-16le")} + result = str.tr(range, star) + assert_equal(star, result, bug6156) + assert_not_predicate(str, :ascii_only?) + assert_not_predicate(star, :ascii_only?) + assert_not_predicate(result, :ascii_only?, bug13950) + + assert_equal(S("XYC"), S("ABC").tr("A-AB", "XY")) + end + + def test_tr! + a = S("hello") + b = a.dup + assert_equal(S("hippo"), a.tr!(S("el"), S("ip"))) + assert_equal(S("hippo"), a) + assert_equal(S("hello"),b) + + a = S("hello") + assert_equal(S("*e**o"), a.tr!(S("^aeiou"), S("*"))) + assert_equal(S("*e**o"), a) + + a = S("IBM") + assert_equal(S("HAL"), a.tr!(S("B-Z"), S("A-Z"))) + assert_equal(S("HAL"), a) + + a = S("ibm") + assert_nil(a.tr!(S("B-Z"), S("A-Z"))) + assert_equal(S("ibm"), a) + + a = S("abc".force_encoding(Encoding::US_ASCII)) + assert_nil(a.tr!(S("z"), S("\u0101")), '[ruby-core:22326]') + assert_equal(Encoding::US_ASCII, a.encoding, '[ruby-core:22326]') + + assert_equal(S("XYC"), S("ABC").tr!("A-AB", "XY")) + end + + def test_tr_s + assert_equal(S("hypo"), S("hello").tr_s(S("el"), S("yp"))) + assert_equal(S("h*o"), S("hello").tr_s(S("el"), S("*"))) + assert_equal("a".hash, S("\u0101\u0101").tr_s("\u0101", "a").hash) + assert_equal(true, S("\u3041\u3041").tr("\u3041", "a").ascii_only?) + + assert_equal(S("XYC"), S("ABC").tr_s("A-AB", "XY")) + end + + def test_tr_s! + a = S("hello") + b = a.dup + assert_equal(S("hypo"), a.tr_s!(S("el"), S("yp"))) + assert_equal(S("hypo"), a) + assert_equal(S("hello"), b) + + a = S("hello") + assert_equal(S("h*o"), a.tr_s!(S("el"), S("*"))) + assert_equal(S("h*o"), a) + + assert_equal(S("XYC"), S("ABC").tr_s!("A-AB", "XY")) + end + + def test_unpack + a = [S("cat"), S("wom"), S("x"), S("yy")] + assert_equal(a, S("catwomx yy ").unpack(S("A3A3A3A3"))) + + assert_equal([S("cat")], S("cat \000\000").unpack(S("A*"))) + assert_equal([S("cwx"), S("wx"), S("x"), S("yy")], + S("cwx yy ").unpack(S("A3@1A3@2A3A3"))) + assert_equal([S("cat"), S("wom"), S("x\000\000"), S("yy\000")], + S("catwomx\000\000yy\000").unpack(S("a3a3a3a3"))) + assert_equal([S("cat \000\000")], S("cat \000\000").unpack(S("a*"))) + assert_equal([S("ca")], S("catdog").unpack(S("a2"))) + + assert_equal([S("cat\000\000")], + S("cat\000\000\000\000\000dog").unpack(S("a5"))) + + assert_equal([S("01100001")], S("\x61").unpack(S("B8"))) + assert_equal([S("01100001")], S("\x61").unpack(S("B*"))) + assert_equal([S("0110000100110111")], S("\x61\x37").unpack(S("B16"))) + assert_equal([S("01100001"), S("00110111")], S("\x61\x37").unpack(S("B8B8"))) + assert_equal([S("0110")], S("\x60").unpack(S("B4"))) + + assert_equal([S("01")], S("\x40").unpack(S("B2"))) + + assert_equal([S("01100001")], S("\x86").unpack(S("b8"))) + assert_equal([S("01100001")], S("\x86").unpack(S("b*"))) + + assert_equal([S("0110000100110111")], S("\x86\xec").unpack(S("b16"))) + assert_equal([S("01100001"), S("00110111")], S("\x86\xec").unpack(S("b8b8"))) + + assert_equal([S("0110")], S("\x06").unpack(S("b4"))) + assert_equal([S("01")], S("\x02").unpack(S("b2"))) + + assert_equal([ 65, 66, 67 ], S("ABC").unpack(S("C3"))) + assert_equal([ 255, 66, 67 ], S("\377BC").unpack("C*")) + assert_equal([ 65, 66, 67 ], S("ABC").unpack("c3")) + assert_equal([ -1, 66, 67 ], S("\377BC").unpack("c*")) + + + assert_equal([S("4142"), S("0a"), S("1")], S("AB\n\x10").unpack(S("H4H2H1"))) + assert_equal([S("1424"), S("a0"), S("2")], S("AB\n\x02").unpack(S("h4h2h1"))) + + assert_equal([S("abc\002defcat\001"), S(""), S("")], + S("abc=02def=\ncat=\n=01=\n").unpack(S("M9M3M4"))) + + assert_equal([S("hello\n")], S("aGVsbG8K\n").unpack(S("m"))) + + assert_equal([S("hello\nhello\n")], S(",:&5L;&\\*:&5L;&\\*\n").unpack(S("u"))) + + assert_equal([0xa9, 0x42, 0x2260], S("\xc2\xa9B\xe2\x89\xa0").unpack(S("U*"))) + + # more comprehensive tests are in test_pack.rb + end + + def test_upcase + assert_equal(S("HELLO"), S("hello").upcase) + assert_equal(S("HELLO"), S("hello").upcase) + assert_equal(S("HELLO"), S("HELLO").upcase) + assert_equal(S("ABC HELLO 123"), S("abc HELLO 123").upcase) + assert_equal(S("H\0""ELLO"), S("H\0""ello").upcase) + assert_equal(S("\u{10574}"), S("\u{1059B}").upcase) + end + + def test_upcase! + a = S("hello") + b = a.dup + assert_equal(S("HELLO"), a.upcase!) + assert_equal(S("HELLO"), a) + assert_equal(S("hello"), b) + + a = S("HELLO") + assert_nil(a.upcase!) + assert_equal(S("HELLO"), a) + + a = S("H\0""ello") + b = a.dup + assert_equal(S("H\0""ELLO"), a.upcase!) + assert_equal(S("H\0""ELLO"), a) + assert_equal(S("H\0""ello"), b) + end + + def test_upto + a = S("aa") + start = S("aa") + count = 0 + assert_equal(S("aa"), a.upto(S("zz")) {|s| + assert_equal(start, s) + start.succ! + count += 1 + }) + assert_equal(676, count) + end + + def test_upto_numeric + a = S("00") + start = S("00") + count = 0 + assert_equal(S("00"), a.upto(S("23")) {|s| + assert_equal(start, s, "[ruby-dev:39361]") + assert_equal(Encoding::US_ASCII, s.encoding) + start.succ! + count += 1 + }) + assert_equal(24, count, "[ruby-dev:39361]") + end + + def test_upto_nonalnum + first = S("\u3041") + last = S("\u3093") + count = 0 + assert_equal(first, first.upto(last) {|s| + count += 1 + s.replace(last) + }) + assert_equal(83, count, "[ruby-dev:39626]") + end + + def test_mod_check + assert_raise(RuntimeError) { + s = "" + s.sub!(/\A/) { s.replace "z" * 2000; "zzz" } + } + end + + def test_frozen_check + assert_raise(FrozenError) { + s = "" + s.sub!(/\A/) { s.freeze; "zzz" } + } + end + + class S2 < String + end + def test_str_new4 + return unless @cls == String + + s = (0..54).to_a.join # length = 100 + s2 = S2.new(s[10,90]) + s3 = s2[10,80] + assert_equal((10..54).to_a.to_a.join, s2) + assert_equal((15..54).to_a.to_a.join, s3) + end + + def test_rb_str_new4 + s = S("a" * 100) + s2 = s[10,90] + assert_equal("a" * 90, s2) + s3 = s2[10,80] + assert_equal("a" * 80, s3) + end + + class StringLike + def initialize(str) + @str = str + end + + def to_str + @str + end + end + + def test_rb_str_to_str + assert_equal("ab", S("a") + StringLike.new("b")) + end + + def test_rb_str_shared_replace + s = S("a" * 100) + s.succ! + assert_equal("a" * 99 + "b", s) + s = "" + s.succ! + assert_equal("", s) + end + + def test_times + assert_raise(ArgumentError) { "a" * (-1) } + end + + def test_splice! + l = S("1234\n234\n34\n4\n") + assert_equal(S("1234\n"), l.slice!(/\A.*\n/), "[ruby-dev:31665]") + assert_equal(S("234\n"), l.slice!(/\A.*\n/), "[ruby-dev:31665]") + assert_equal(S("34\n"), l.slice!(/\A.*\n/), "[ruby-dev:31665]") + assert_equal(S("4\n"), l.slice!(/\A.*\n/), "[ruby-dev:31665]") + assert_nil(l.slice!(/\A.*\n/), "[ruby-dev:31665]") + end + + def test_times2 + s1 = '' + 100.times {|n| + s2 = S("a") * n + assert_equal(s1, s2) + s1 << 'a' + } + + assert_raise(ArgumentError) { S("foo") * (-1) } + end + + def test_respond_to + o = Object.new + def o.respond_to?(arg) [:to_str].include?(arg) ? nil : super end + def o.to_str() "" end + def o.==(other) "" == other end + assert_equal(false, S("") == o) + end + + def test_match_method + assert_equal("bar", S("foobarbaz").match(/bar/).to_s) + + o = Regexp.new('foo') + def o.match(x, y, z); x + y + z; end + assert_equal("foobarbaz", S("foo").match(o, "bar", "baz")) + x = nil + S("foo").match(o, "bar", "baz") {|y| x = y } + assert_equal("foobarbaz", x) + + assert_raise(ArgumentError) { S("foo").match } + end + + def test_match_p_regexp + /backref/ =~ 'backref' + # must match here, but not in a separate method, e.g., assert_send, + # to check if $~ is affected or not. + assert_equal(true, S("").match?(//)) + assert_equal(true, :abc.match?(/.../)) + assert_equal(true, S('abc').match?(/b/)) + assert_equal(true, S('abc').match?(/b/, 1)) + assert_equal(true, S('abc').match?(/../, 1)) + assert_equal(true, S('abc').match?(/../, -2)) + assert_equal(false, S('abc').match?(/../, -4)) + assert_equal(false, S('abc').match?(/../, 4)) + assert_equal(true, S("\u3042xx").match?(/../, 1)) + assert_equal(false, S("\u3042x").match?(/../, 1)) + assert_equal(true, S('').match?(/\z/)) + assert_equal(true, S('abc').match?(/\z/)) + assert_equal(true, S('Ruby').match?(/R.../)) + assert_equal(false, S('Ruby').match?(/R.../, 1)) + assert_equal(false, S('Ruby').match?(/P.../)) + assert_equal('backref', $&) + end + + def test_match_p_string + /backref/ =~ 'backref' + # must match here, but not in a separate method, e.g., assert_send, + # to check if $~ is affected or not. + assert_equal(true, S("").match?('')) + assert_equal(true, :abc.match?('...')) + assert_equal(true, S('abc').match?('b')) + assert_equal(true, S('abc').match?('b', 1)) + assert_equal(true, S('abc').match?('..', 1)) + assert_equal(true, S('abc').match?('..', -2)) + assert_equal(false, S('abc').match?('..', -4)) + assert_equal(false, S('abc').match?('..', 4)) + assert_equal(true, S("\u3042xx").match?('..', 1)) + assert_equal(false, S("\u3042x").match?('..', 1)) + assert_equal(true, S('').match?('\z')) + assert_equal(true, S('abc').match?('\z')) + assert_equal(true, S('Ruby').match?('R...')) + assert_equal(false, S('Ruby').match?('R...', 1)) + assert_equal(false, S('Ruby').match?('P...')) + assert_equal('backref', $&) + end + + def test_clear + s = "foo" * 100 + s.clear + assert_equal("", s) + end + + def test_to_s_2 + c = Class.new(String) + s = c.new + s.replace("foo") + assert_equal("foo", s.to_s) + assert_instance_of(String, s.to_s) + end + + def test_inspect_nul + bug8290 = '[ruby-core:54458]' + s = S("\0") + "12" + assert_equal '"\u000012"', s.inspect, bug8290 + s = S("\0".b) + "12" + assert_equal '"\x0012"', s.inspect, bug8290 + end + + def test_inspect_next_line + bug16842 = '[ruby-core:98231]' + assert_equal '"\\u0085"', 0x85.chr(Encoding::UTF_8).inspect, bug16842 + end + + def test_partition + assert_equal(%w(he l lo), S("hello").partition(/l/)) + assert_equal(%w(he l lo), S("hello").partition("l")) + assert_raise(TypeError) { S("hello").partition(1) } + def (hyphen = Object.new).to_str; "-"; end + assert_equal(%w(foo - bar), S("foo-bar").partition(hyphen), '[ruby-core:23540]') + + bug6206 = '[ruby-dev:45441]' + Encoding.list.each do |enc| + next unless enc.ascii_compatible? + s = S("a:".force_encoding(enc)) + assert_equal([enc]*3, s.partition("|").map(&:encoding), bug6206) + end + + assert_equal(["\u30E6\u30FC\u30B6", "@", "\u30C9\u30E1.\u30A4\u30F3"], + S("\u30E6\u30FC\u30B6@\u30C9\u30E1.\u30A4\u30F3").partition(/[@.]/)) + + bug = '[ruby-core:82911]' + hello = S("hello") + hello.partition("hi").map(&:upcase!) + assert_equal("hello", hello, bug) + + assert_equal(["", "", "foo"], S("foo").partition(/^=*/)) + + assert_equal([S("ab"), S("c"), S("dbce")], S("abcdbce").partition(/b\Kc/)) + end + + def test_rpartition + assert_equal(%w(hel l o), S("hello").rpartition(/l/)) + assert_equal(%w(hel l o), S("hello").rpartition("l")) + assert_raise(TypeError) { S("hello").rpartition(1) } + def (hyphen = Object.new).to_str; "-"; end + assert_equal(%w(foo - bar), S("foo-bar").rpartition(hyphen), '[ruby-core:23540]') + + bug6206 = '[ruby-dev:45441]' + Encoding.list.each do |enc| + next unless enc.ascii_compatible? + s = S("a:".force_encoding(enc)) + assert_equal([enc]*3, s.rpartition("|").map(&:encoding), bug6206) + end + + bug8138 = '[ruby-dev:47183]' + assert_equal(["\u30E6\u30FC\u30B6@\u30C9\u30E1", ".", "\u30A4\u30F3"], + S("\u30E6\u30FC\u30B6@\u30C9\u30E1.\u30A4\u30F3").rpartition(/[@.]/), bug8138) + + bug = '[ruby-core:82911]' + hello = "hello" + hello.rpartition("hi").map(&:upcase!) + assert_equal("hello", hello, bug) + + assert_equal([S("abcdb"), S("c"), S("e")], S("abcdbce").rpartition(/b\Kc/)) + end + + def test_rs + return unless @cls == String + + begin + rs = $/ + assert_deprecated_warning(/non-nil '\$\/'/) { $/ = "" } + assert_raise(TypeError) { $/ = 1 } + ensure + EnvUtil.suppress_warning { $/ = rs } + end + name = "\u{5206 884c}" + assert_separately([], "#{<<~"do;"}\n#{<<~"end;"}") + do; + alias $#{name} $/ + assert_deprecated_warning(/\\$#{name}/) { $#{name} = "" } + assert_raise_with_message(TypeError, /\\$#{name}/) { $#{name} = 1 } + end; + end + + def test_to_id + c = Class.new + c.class_eval do + def initialize + @foo = :foo + end + end + + assert_raise(TypeError) do + c.class_eval { attr 1 } + end + + o = Object.new + def o.to_str; :foo; end + assert_raise(TypeError) do + c.class_eval { attr 1 } + end + + class << o;remove_method :to_str;end + def o.to_str; "foo"; end + assert_nothing_raised do + c.class_eval { attr o } + end + assert_equal(:foo, c.new.foo) + end + + def test_gsub_enumerator + e = S("abc").gsub(/./) + assert_equal("a", e.next, "[ruby-dev:34828]") + assert_equal("b", e.next) + assert_equal("c", e.next) + end + + def test_clear_nonasciicompat + assert_equal("", S("\u3042".encode("ISO-2022-JP")).clear) + end + + def test_try_convert + assert_equal(nil, @cls.try_convert(1)) + assert_equal("foo", @cls.try_convert("foo")) + end + + def test_substr_negative_begin + assert_equal("\u3042", ("\u3042" * 100)[-1]) + end + + def test_compare_different_encoding_string + s1 = S("\xff".force_encoding("UTF-8")) + s2 = S("\xff".force_encoding("ISO-2022-JP")) + assert_equal([-1, 1], [s1 <=> s2, s2 <=> s1].sort) + + s3 = S("あ".force_encoding("UTF-16LE")) + s4 = S("a".force_encoding("IBM437")) + assert_equal([-1, 1], [s3 <=> s4, s4 <=> s3].sort) + end + + def test_casecmp + assert_equal(0, S("FoO").casecmp("fOO")) + assert_equal(1, S("FoO").casecmp("BaR")) + assert_equal(-1, S("foo").casecmp("FOOBAR")) + assert_equal(-1, S("baR").casecmp("FoO")) + assert_equal(1, S("\u3042B").casecmp("\u3042a")) + assert_equal(-1, S("foo").casecmp("foo\0")) + assert_equal(1, S("FOOBAR").casecmp("foo")) + assert_equal(0, S("foo\0bar").casecmp("FOO\0BAR")) + + assert_nil(S("foo").casecmp(:foo)) + assert_nil(S("foo").casecmp(Object.new)) + + assert_nil(S("foo").casecmp(0)) + assert_nil(S("foo").casecmp(5.00)) + + o = Object.new + def o.to_str; "fOO"; end + assert_equal(0, S("FoO").casecmp(o)) + + assert_equal(0, S("#" * 128 + "A" * 256 + "b").casecmp("#" * 128 + "a" * 256 + "B")) + assert_equal(0, S("a" * 256 + "B").casecmp("A" * 256 + "b")) + + assert_equal(-1, S("@").casecmp("`")) + assert_equal(0, S("hello\u00E9X").casecmp("HELLO\u00E9x")) + + s1 = S("\xff".force_encoding("UTF-8")) + s2 = S("\xff".force_encoding("ISO-2022-JP")) + assert_nil(s1.casecmp(s2)) + end + + def test_casecmp? + assert_equal(true, S('FoO').casecmp?('fOO')) + assert_equal(false, S('FoO').casecmp?('BaR')) + assert_equal(false, S('baR').casecmp?('FoO')) + assert_equal(true, S('äöü').casecmp?('ÄÖÜ')) + assert_equal(false, S("foo").casecmp?("foo\0")) + + assert_nil(S("foo").casecmp?(:foo)) + assert_nil(S("foo").casecmp?(Object.new)) + + assert_nil(S("foo").casecmp(0)) + assert_nil(S("foo").casecmp(5.00)) + + o = Object.new + def o.to_str; "fOO"; end + assert_equal(true, S("FoO").casecmp?(o)) + + s1 = S("\xff".force_encoding("UTF-8")) + s2 = S("\xff".force_encoding("ISO-2022-JP")) + assert_nil(s1.casecmp?(s2)) + end + + def test_upcase2 + assert_equal("\u3042AB", S("\u3042aB").upcase) + end + + def test_downcase2 + assert_equal("\u3042ab", S("\u3042aB").downcase) + end + + def test_rstrip + assert_equal(" hello", S(" hello ").rstrip) + assert_equal("\u3042", S("\u3042 ").rstrip) + assert_equal("\u3042", S("\u3042\u0000").rstrip) + assert_raise(Encoding::CompatibilityError) { S("\u3042".encode("ISO-2022-JP")).rstrip } + end + + def test_rstrip_bang + s1 = S(" hello ") + assert_equal(" hello", s1.rstrip!) + assert_equal(" hello", s1) + + s2 = S("\u3042 ") + assert_equal("\u3042", s2.rstrip!) + assert_equal("\u3042", s2) + + s3 = S(" \u3042") + assert_equal(nil, s3.rstrip!) + assert_equal(" \u3042", s3) + + s4 = S("\u3042") + assert_equal(nil, s4.rstrip!) + assert_equal("\u3042", s4) + + s5 = S("\u3042\u0000") + assert_equal("\u3042", s5.rstrip!) + assert_equal("\u3042", s5) + + assert_raise(Encoding::CompatibilityError) { S("\u3042".encode("ISO-2022-JP")).rstrip! } + assert_raise(Encoding::CompatibilityError) { S("abc \x80 ".force_encoding('UTF-8')).rstrip! } + assert_raise(Encoding::CompatibilityError) { S("abc\x80 ".force_encoding('UTF-8')).rstrip! } + assert_raise(Encoding::CompatibilityError) { S("abc \x80".force_encoding('UTF-8')).rstrip! } + assert_raise(Encoding::CompatibilityError) { S("\x80".force_encoding('UTF-8')).rstrip! } + assert_raise(Encoding::CompatibilityError) { S(" \x80 ".force_encoding('UTF-8')).rstrip! } + end + + def test_lstrip + assert_equal("hello ", S(" hello ").lstrip) + assert_equal("\u3042", S(" \u3042").lstrip) + assert_equal("hello ", S("\x00hello ").lstrip) + end + + def test_lstrip_bang + s1 = S(" hello ") + assert_equal("hello ", s1.lstrip!) + assert_equal("hello ", s1) + + s2 = S("\u3042 ") + assert_equal(nil, s2.lstrip!) + assert_equal("\u3042 ", s2) + + s3 = S(" \u3042") + assert_equal("\u3042", s3.lstrip!) + assert_equal("\u3042", s3) + + s4 = S("\u3042") + assert_equal(nil, s4.lstrip!) + assert_equal("\u3042", s4) + + s5 = S("\u0000\u3042") + assert_equal("\u3042", s5.lstrip!) + assert_equal("\u3042", s5) + end + + def test_delete_prefix_type_error + assert_raise(TypeError) { S('hello').delete_prefix(nil) } + assert_raise(TypeError) { S('hello').delete_prefix(1) } + assert_raise(TypeError) { S('hello').delete_prefix(/hel/) } + end + + def test_delete_prefix + s = S("hello") + assert_equal("lo", s.delete_prefix('hel')) + assert_equal("hello", s) + + s = S("hello") + assert_equal("hello", s.delete_prefix('lo')) + assert_equal("hello", s) + + s = S("\u{3053 3093 306b 3061 306f}") + assert_equal("\u{306b 3061 306f}", s.delete_prefix("\u{3053 3093}")) + assert_equal("\u{3053 3093 306b 3061 306f}", s) + + s = S("\u{3053 3093 306b 3061 306f}") + assert_equal("\u{3053 3093 306b 3061 306f}", s.delete_prefix('hel')) + assert_equal("\u{3053 3093 306b 3061 306f}", s) + + s = S("hello") + assert_equal("hello", s.delete_prefix("\u{3053 3093}")) + assert_equal("hello", s) + end + + def test_delete_prefix_broken_encoding + s = S("\xe3\x81\x82") + assert_equal("\xe3\x81\x82", s.delete_prefix("\xe3")) + assert_equal("\xe3\x81\x82", s) + + s = S("\x95\x5c").force_encoding("Shift_JIS") + assert_equal("\x95\x5c".force_encoding("Shift_JIS"), s.delete_prefix("\x95")) + assert_equal("\x95\x5c".force_encoding("Shift_JIS"), s) + + assert_equal("\xFE", S("\xFF\xFE").delete_prefix("\xFF")) + assert_equal("\xBE", S("hello\xBE").delete_prefix("hello")) + assert_equal("\xBE", S("\xFFhello\xBE").delete_prefix("\xFFhello")) + end + + def test_delete_prefix_clear_coderange + s = S("\u{3053 3093}hello") + assert_not_predicate(s, :ascii_only?) + assert_predicate(s.delete_prefix("\u{3053 3093}"), :ascii_only?) + end + + def test_delete_prefix_argument_conversion + klass = Class.new { def to_str; 'a'; end } + s = S("abba") + assert_equal("bba", s.delete_prefix(klass.new)) + assert_equal("abba", s) + end + + def test_delete_prefix_bang_type_error + assert_raise(TypeError) { S('hello').delete_prefix!(nil) } + assert_raise(TypeError) { S('hello').delete_prefix!(1) } + assert_raise(TypeError) { S('hello').delete_prefix!(/hel/) } + end + + def test_delete_prefix_bang + s = S("hello") + assert_equal("lo", s.delete_prefix!('hel')) + assert_equal("lo", s) + + s = S("hello") + assert_equal(nil, s.delete_prefix!('lo')) + assert_equal("hello", s) + + s = S("\u{3053 3093 306b 3061 306f}") + assert_equal("\u{306b 3061 306f}", s.delete_prefix!("\u{3053 3093}")) + assert_equal("\u{306b 3061 306f}", s) + + s = S("\u{3053 3093 306b 3061 306f}") + assert_equal(nil, s.delete_prefix!('hel')) + assert_equal("\u{3053 3093 306b 3061 306f}", s) + + s = S("hello") + assert_equal(nil, s.delete_prefix!("\u{3053 3093}")) + assert_equal("hello", s) + end + + def test_delete_prefix_bang_broken_encoding + s = S("\xe3\x81\x82") + assert_equal(nil, s.delete_prefix!("\xe3")) + assert_equal("\xe3\x81\x82", s) + + s = S("\xFF\xFE") + assert_equal("\xFE", s.delete_prefix!("\xFF")) + assert_equal("\xFE", s) + end + + def test_delete_prefix_bang_clear_coderange + s = S("\u{3053 3093}hello") + assert_not_predicate(s, :ascii_only?) + assert_predicate(s.delete_prefix!("\u{3053 3093}"), :ascii_only?) + end + + def test_delete_prefix_bang_argument_conversion + klass = Class.new { def to_str; 'a'; end } + s = S("abba") + assert_equal("bba", s.delete_prefix!(klass.new)) + assert_equal("bba", s) + end + + def test_delete_prefix_bang_frozen_error + s = S("ax").freeze + assert_raise_with_message(FrozenError, /frozen/) {s.delete_prefix!("a")} + + s = S("ax") + o = Struct.new(:s).new(s) + def o.to_str + s.freeze + "a" + end + assert_raise_with_message(FrozenError, /frozen/) {s.delete_prefix!(o)} + end + + def test_delete_suffix_type_error + assert_raise(TypeError) { S('hello').delete_suffix(nil) } + assert_raise(TypeError) { S('hello').delete_suffix(1) } + assert_raise(TypeError) { S('hello').delete_suffix(/hel/) } + end + + def test_delete_suffix + s = S("hello") + assert_equal("hel", s.delete_suffix('lo')) + assert_equal("hello", s) + + s = S("hello") + assert_equal("hello", s.delete_suffix('he')) + assert_equal("hello", s) + + s = S("\u{3053 3093 306b 3061 306f}") + assert_equal("\u{3053 3093 306b}", s.delete_suffix("\u{3061 306f}")) + assert_equal("\u{3053 3093 306b 3061 306f}", s) + + s = S("\u{3053 3093 306b 3061 306f}") + assert_equal("\u{3053 3093 306b 3061 306f}", s.delete_suffix('lo')) + assert_equal("\u{3053 3093 306b 3061 306f}", s) + + s = S("hello") + assert_equal("hello", s.delete_suffix("\u{3061 306f}")) + assert_equal("hello", s) + end + + def test_delete_suffix_broken_encoding + s = S("\xe3\x81\x82") + assert_equal("\xe3\x81\x82", s.delete_suffix("\x82")) + assert_equal("\xe3\x81\x82", s) + end + + def test_delete_suffix_clear_coderange + s = S("hello\u{3053 3093}") + assert_not_predicate(s, :ascii_only?) + assert_predicate(s.delete_suffix("\u{3053 3093}"), :ascii_only?) + end + + def test_delete_suffix_argument_conversion + klass = Class.new { def to_str; 'a'; end } + s = S("abba") + assert_equal("abb", s.delete_suffix(klass.new)) + assert_equal("abba", s) + end + + def test_delete_suffix_newline + # chomp removes any of "\n", "\r\n", "\r" when "\n" is specified, + # but delete_suffix does not + s = "foo\n" + assert_equal("foo", s.delete_suffix("\n")) + s = "foo\r\n" + assert_equal("foo\r", s.delete_suffix("\n")) + s = "foo\r" + assert_equal("foo\r", s.delete_suffix("\n")) + end + + def test_delete_suffix_bang_type_error + assert_raise(TypeError) { S('hello').delete_suffix!(nil) } + assert_raise(TypeError) { S('hello').delete_suffix!(1) } + assert_raise(TypeError) { S('hello').delete_suffix!(/hel/) } + end + + def test_delete_suffix_bang_frozen_error + s = S("hello").freeze + assert_raise_with_message(FrozenError, /frozen/) {s.delete_suffix!('lo')} + + s = S("ax") + o = Struct.new(:s).new(s) + def o.to_str + s.freeze + "x" + end + assert_raise_with_message(FrozenError, /frozen/) {s.delete_suffix!(o)} + end + + def test_delete_suffix_bang + s = S("hello") + assert_equal("hel", s.delete_suffix!('lo')) + assert_equal("hel", s) + + s = S("hello") + assert_equal(nil, s.delete_suffix!('he')) + assert_equal("hello", s) + + s = S("\u{3053 3093 306b 3061 306f}") + assert_equal("\u{3053 3093 306b}", s.delete_suffix!("\u{3061 306f}")) + assert_equal("\u{3053 3093 306b}", s) + + s = S("\u{3053 3093 306b 3061 306f}") + assert_equal(nil, s.delete_suffix!('lo')) + assert_equal("\u{3053 3093 306b 3061 306f}", s) + + s = S("hello") + assert_equal(nil, s.delete_suffix!("\u{3061 306f}")) + assert_equal("hello", s) + end + + def test_delete_suffix_bang_broken_encoding + s = S("\xe3\x81\x82") + assert_equal(nil, s.delete_suffix!("\x82")) + assert_equal("\xe3\x81\x82", s) + + s = S("\x95\x5c").force_encoding("Shift_JIS") + assert_equal(nil, s.delete_suffix!("\x5c")) + assert_equal("\x95\x5c".force_encoding("Shift_JIS"), s) + end + + def test_delete_suffix_bang_clear_coderange + s = S("hello\u{3053 3093}") + assert_not_predicate(s, :ascii_only?) + assert_predicate(s.delete_suffix!("\u{3053 3093}"), :ascii_only?) + end + + def test_delete_suffix_bang_argument_conversion + klass = Class.new { def to_str; 'a'; end } + s = S("abba") + assert_equal("abb", s.delete_suffix!(klass.new)) + assert_equal("abb", s) + end + + def test_delete_suffix_bang_newline + # chomp removes any of "\n", "\r\n", "\r" when "\n" is specified, + # but delete_suffix does not + s = "foo\n" + assert_equal("foo", s.delete_suffix!("\n")) + s = "foo\r\n" + assert_equal("foo\r", s.delete_suffix!("\n")) + s = "foo\r" + assert_equal(nil, s.delete_suffix!("\n")) + end + +=begin + def test_symbol_table_overflow + assert_in_out_err([], <<-INPUT, [], /symbol table overflow \(symbol [a-z]{8}\) \(RuntimeError\)/) + ("aaaaaaaa".."zzzzzzzz").each {|s| s.to_sym } + INPUT + end +=end + + def test_nesting_shared + a = ('a' * 24).encode(Encoding::ASCII).gsub('x', '') + hash = {} + hash[a] = true + assert_equal(('a' * 24), a) + 4.times { GC.start } + assert_equal(('a' * 24), a, '[Bug #15792]') + end + + def test_nesting_shared_b + a = ('j' * 24).b.b + eval('', binding, a) + assert_equal(('j' * 24), a) + 4.times { GC.start } + assert_equal(('j' * 24), a, '[Bug #15934]') + end + + def test_shared_force_encoding + s = S("\u{3066}\u{3059}\u{3068}").gsub(//, '') + h = {} + h[s] = nil + k = h.keys[0] + assert_equal(s, k, '[ruby-dev:39068]') + assert_equal(Encoding::UTF_8, k.encoding, '[ruby-dev:39068]') + s.dup.force_encoding(Encoding::ASCII_8BIT).gsub(//, '') + k = h.keys[0] + assert_equal(s, k, '[ruby-dev:39068]') + assert_equal(Encoding::UTF_8, k.encoding, '[ruby-dev:39068]') + end + + def test_ascii_incomat_inspect + bug4081 = '[ruby-core:33283]' + WIDE_ENCODINGS.each do |e| + assert_equal('"abc"', S("abc".encode(e)).inspect) + assert_equal('"\\u3042\\u3044\\u3046"', S("\u3042\u3044\u3046".encode(e)).inspect) + assert_equal('"ab\\"c"', S("ab\"c".encode(e)).inspect, bug4081) + end + + EnvUtil.with_default_external(Encoding::US_ASCII) do + i = S("abc\"\\".force_encoding("utf-8")).inspect + + assert_equal('"abc\\"\\\\"', i, bug4081) + end + end + + def test_dummy_inspect + assert_equal('"\e\x24\x42\x22\x4C\x22\x68\e\x28\x42"', + S("\u{ffe2}\u{2235}".encode("cp50220")).inspect) + end + + def test_prepend + assert_equal(S("hello world!"), S("!").prepend("hello ", "world")) + b = S("ue") + assert_equal(S("ueueue"), b.prepend(b, b)) + + foo = Object.new + def foo.to_str + "b" + end + assert_equal(S("ba"), S("a").prepend(foo)) + + a = S("world") + b = S("hello ") + a.prepend(b) + assert_equal(S("hello world"), a) + assert_equal(S("hello "), b) + end + + def u(str) + str.force_encoding(Encoding::UTF_8) + end + + def test_byteslice + assert_equal("h", S("hello").byteslice(0)) + assert_equal(nil, S("hello").byteslice(5)) + assert_equal("o", S("hello").byteslice(-1)) + assert_equal(nil, S("hello").byteslice(-6)) + + assert_equal("", S("hello").byteslice(0, 0)) + assert_equal("hello", S("hello").byteslice(0, 6)) + assert_equal("hello", S("hello").byteslice(0, 6)) + assert_equal("", S("hello").byteslice(5, 1)) + assert_equal("o", S("hello").byteslice(-1, 6)) + assert_equal(nil, S("hello").byteslice(-6, 1)) + assert_equal(nil, S("hello").byteslice(0, -1)) + + assert_equal("h", S("hello").byteslice(0..0)) + assert_equal("", S("hello").byteslice(5..0)) + assert_equal("o", S("hello").byteslice(4..5)) + assert_equal(nil, S("hello").byteslice(6..0)) + assert_equal("", S("hello").byteslice(-1..0)) + assert_equal("llo", S("hello").byteslice(-3..5)) + + assert_equal(u("\x81"), S("\u3042").byteslice(1)) + assert_equal(u("\x81\x82"), S("\u3042").byteslice(1, 2)) + assert_equal(u("\x81\x82"), S("\u3042").byteslice(1..2)) + + assert_equal(u("\x82")+("\u3042"*9), S("\u3042"*10).byteslice(2, 28)) + + assert_equal("\xE3", S("こんにちは").byteslice(0)) + assert_equal("こんにちは", S("こんにちは").byteslice(0, 15)) + assert_equal("こ", S("こんにちは").byteslice(0, 3)) + assert_equal("は", S("こんにちは").byteslice(12, 15)) + + bug7954 = '[ruby-dev:47108]' + assert_equal(false, S("\u3042").byteslice(0, 2).valid_encoding?, bug7954) + assert_equal(false, ("\u3042"*10).byteslice(0, 20).valid_encoding?, bug7954) + end + + def test_unknown_string_option + str = nil + assert_nothing_raised(SyntaxError) do + eval(%{ + str = begin"hello"end + }) + end + assert_equal "hello", str + end + + def test_eq_tilde_can_be_overridden + return unless @cls == String + + assert_separately([], <<-RUBY) + class String + undef =~ + def =~(str) + "foo" + end + end + + assert_equal("foo", "" =~ //) + RUBY + end + + class Bug9581 < String + def =~ re; :foo end + end + + def test_regexp_match_subclass + s = Bug9581.new(S("abc")) + r = /abc/ + assert_equal(:foo, s =~ r) + assert_equal(:foo, s.send(:=~, r)) + assert_equal(:foo, s.send(:=~, /abc/)) + assert_equal(:foo, s =~ /abc/, "should not use optimized instruction") + end + + def test_LSHIFT_neary_long_max + return unless @cls == String + + assert_ruby_status([], <<-'end;', '[ruby-core:61886] [Bug #9709]', timeout: 20) + begin + a = "a" * 0x4000_0000 + a << "a" * 0x1_0000 + rescue NoMemoryError + end + end; + end if [0].pack("l!").bytesize < [nil].pack("p").bytesize + # enable only when string size range is smaller than memory space + + def test_uplus_minus + return unless @cls == String + + str = "foo" + assert_not_predicate(str, :frozen?) + assert_not_predicate(+str, :frozen?) + assert_predicate(-str, :frozen?) + + assert_same(str, +str) + assert_not_same(str, -str) + + require 'objspace' + + str = "test_uplus_minus_str".freeze + assert_includes ObjectSpace.dump(str), '"fstring":true' + + assert_predicate(str, :frozen?) + assert_not_predicate(+str, :frozen?) + assert_predicate(-str, :frozen?) + + assert_not_same(str, +str) + assert_same(str, -str) + + bar = -%w(test uplus minus str).join('_') + assert_same(str, bar, "uminus deduplicates [Feature #13077] str: #{ObjectSpace.dump(str)} bar: #{ObjectSpace.dump(bar)}") + end + + def test_uminus_dedup_in_place + dynamic = "this string is unique and frozen #{rand}".freeze + assert_same dynamic, -dynamic + assert_same dynamic, -dynamic.dup + end + + def test_uminus_frozen + return unless @cls == String + + # embedded + str1 = ("foobar" * 3).freeze + str2 = ("foobar" * 3).freeze + assert_not_same str1, str2 + assert_same str1, -str1 + assert_same str1, -str2 + + # regular + str1 = ("foobar" * 4).freeze + str2 = ("foobar" * 4).freeze + assert_not_same str1, str2 + assert_same str1, -str1 + assert_same str1, -str2 + end + + def test_uminus_no_freeze_not_bare + str = S("foo") + assert_instance_of(@cls, -str) + assert_equal(false, str.frozen?) + + str = S("foo") + str.instance_variable_set(:@iv, 1) + assert_instance_of(@cls, -str) + assert_equal(false, str.frozen?) + assert_equal(1, str.instance_variable_get(:@iv)) + + str = S("foo") + assert_instance_of(@cls, -str) + assert_equal(false, str.frozen?) + end + + def test_uminus_no_embed_gc + pad = "a"*2048 + File.open(IO::NULL, "w") do |dev_null| + ("aa".."zz").each do |c| + fstr = -(c + pad).freeze + dev_null.write(fstr) + end + end + GC.start + end + + def test_ord + assert_equal(97, S("a").ord) + assert_equal(97, S("abc").ord) + assert_equal(0x3042, S("\u3042\u3043").ord) + assert_raise(ArgumentError) { S("").ord } + end + + def test_chr + assert_equal("a", S("abcde").chr) + assert_equal("a", S("a").chr) + assert_equal("\u3042", S("\u3042\u3043").chr) + assert_equal('', S('').chr) + end + + def test_substr_code_range + data = S("\xff" + "a"*200) + assert_not_predicate(data, :valid_encoding?) + assert_predicate(data[100..-1], :valid_encoding?) + end + + def test_byteindex + assert_byteindex(0, S("hello"), ?h) + assert_byteindex(1, S("hello"), S("ell")) + assert_byteindex(2, S("hello"), /ll./) + + assert_byteindex(3, S("hello"), ?l, 3) + assert_byteindex(3, S("hello"), S("l"), 3) + assert_byteindex(3, S("hello"), /l./, 3) + + assert_byteindex(nil, S("hello"), ?z, 3) + assert_byteindex(nil, S("hello"), S("z"), 3) + assert_byteindex(nil, S("hello"), /z./, 3) + + assert_byteindex(nil, S("hello"), ?z) + assert_byteindex(nil, S("hello"), S("z")) + assert_byteindex(nil, S("hello"), /z./) + + assert_byteindex(0, S(""), S("")) + assert_byteindex(0, S(""), //) + assert_byteindex(nil, S(""), S("hello")) + assert_byteindex(nil, S(""), /hello/) + assert_byteindex(0, S("hello"), S("")) + assert_byteindex(0, S("hello"), //) + + s = S("long") * 1000 << "x" + assert_byteindex(nil, s, S("y")) + assert_byteindex(4 * 1000, s, S("x")) + s << "yx" + assert_byteindex(4 * 1000, s, S("x")) + assert_byteindex(4 * 1000, s, S("xyx")) + + o = Object.new + def o.to_str; "bar"; end + assert_byteindex(3, S("foobarbarbaz"), o) + assert_raise(TypeError) { S("foo").byteindex(Object.new) } + + assert_byteindex(nil, S("foo"), //, -100) + assert_byteindex(nil, S("foo"), //, -4) + + assert_byteindex(2, S("abcdbce"), /b\Kc/) + + assert_byteindex(0, S("こんにちは"), ?こ) + assert_byteindex(3, S("こんにちは"), S("んにち")) + assert_byteindex(6, S("こんにちは"), /にち./) + + assert_byteindex(0, S("にんにちは"), ?に, 0) + assert_raise(IndexError) { S("にんにちは").byteindex(?に, 1) } + assert_raise(IndexError) { S("にんにちは").byteindex(?に, 5) } + assert_byteindex(6, S("にんにちは"), ?に, 6) + assert_byteindex(6, S("にんにちは"), S("に"), 6) + assert_byteindex(6, S("にんにちは"), /に./, 6) + assert_raise(IndexError) { S("にんにちは").byteindex(?に, 7) } + + s = S("foobarbarbaz") + assert !1000.times.any? {s.byteindex("", 100_000_000)} + end + + def test_byterindex + assert_byterindex(3, S("hello"), ?l) + assert_byterindex(6, S("ell, hello"), S("ell")) + assert_byterindex(7, S("ell, hello"), /ll./) + + assert_byterindex(3, S("hello,lo"), ?l, 3) + assert_byterindex(3, S("hello,lo"), S("l"), 3) + assert_byterindex(3, S("hello,lo"), /l./, 3) + + assert_byterindex(nil, S("hello"), ?z, 3) + assert_byterindex(nil, S("hello"), S("z"), 3) + assert_byterindex(nil, S("hello"), /z./, 3) + + assert_byterindex(nil, S("hello"), ?z) + assert_byterindex(nil, S("hello"), S("z")) + assert_byterindex(nil, S("hello"), /z./) + + assert_byterindex(5, S("hello"), S("")) + assert_byterindex(5, S("hello"), S(""), 5) + assert_byterindex(4, S("hello"), S(""), 4) + assert_byterindex(0, S("hello"), S(""), 0) + + o = Object.new + def o.to_str; "bar"; end + assert_byterindex(6, S("foobarbarbaz"), o) + assert_raise(TypeError) { S("foo").byterindex(Object.new) } + + assert_byterindex(nil, S("foo"), //, -100) + + m = assert_byterindex(3, S("foo"), //) + assert_equal([3, 3], m.offset(0)) + assert_byterindex(3, S("foo"), //, 4) + + assert_byterindex(5, S("abcdbce"), /b\Kc/) + + assert_byterindex(6, S("こんにちは"), ?に) + assert_byterindex(18, S("にちは、こんにちは"), S("にちは")) + assert_byterindex(18, S("にちは、こんにちは"), /にち./) + + assert_raise(IndexError) { S("にちは、こんにちは").byterindex(S("にちは"), 19) } + assert_raise(IndexError) { S("にちは、こんにちは").byterindex(S("にちは"), -2) } + assert_byterindex(18, S("にちは、こんにちは"), S("にちは"), 18) + assert_byterindex(18, S("にちは、こんにちは"), S("にちは"), -3) + assert_raise(IndexError) { S("にちは、こんにちは").byterindex(S("にちは"), 17) } + assert_raise(IndexError) { S("にちは、こんにちは").byterindex(S("にちは"), -4) } + assert_raise(IndexError) { S("にちは、こんにちは").byterindex(S("にちは"), 1) } + assert_byterindex(0, S("にちは、こんにちは"), S("にちは"), 0) + + assert_byterindex(0, S("こんにちは"), S("こんにちは")) + assert_byterindex(nil, S("こんにち"), S("こんにちは")) + assert_byterindex(nil, S("こ"), S("こんにちは")) + assert_byterindex(nil, S(""), S("こんにちは")) + end + + def test_bytesplice + assert_bytesplice_raise(IndexError, S("hello"), -6, 0, "bye") + assert_bytesplice_result("byehello", S("hello"), -5, 0, "bye") + assert_bytesplice_result("byehello", S("hello"), 0, 0, "bye") + assert_bytesplice_result("byeello", S("hello"), 0, 1, "bye") + assert_bytesplice_result("bye", S("hello"), 0, 5, "bye") + assert_bytesplice_result("bye", S("hello"), 0, 6, "bye") + + assert_bytesplice_raise(IndexError, S("hello"), -5, 0, "bye", -4, 0) + assert_bytesplice_result("byehello", S("hello"), 0, 0, "bye", 0, 3) + assert_bytesplice_result("yehello", S("hello"), 0, 0, "bye", 1, 3) + assert_bytesplice_result("yehello", S("hello"), 0, 0, "bye", 1, 2) + assert_bytesplice_result("ehello", S("hello"), 0, 0, "bye", 2, 1) + assert_bytesplice_result("hello", S("hello"), 0, 0, "bye", 3, 0) + assert_bytesplice_result("hello", s = S("hello"), 0, 5, s, 0, 5) + assert_bytesplice_result("elloo", s = S("hello"), 0, 4, s, 1, 4) + assert_bytesplice_result("llolo", s = S("hello"), 0, 3, s, 2, 3) + assert_bytesplice_result("lollo", s = S("hello"), 0, 2, s, 3, 2) + assert_bytesplice_result("oello", s = S("hello"), 0, 1, s, 4, 1) + assert_bytesplice_result("hhell", s = S("hello"), 1, 4, s, 0, 4) + assert_bytesplice_result("hehel", s = S("hello"), 2, 3, s, 0, 3) + assert_bytesplice_result("helhe", s = S("hello"), 3, 2, s, 0, 2) + assert_bytesplice_result("hellh", s = S("hello"), 4, 1, s, 0, 1) + + assert_bytesplice_raise(RangeError, S("hello"), -6...-6, "bye") + assert_bytesplice_result("byehello", S("hello"), -5...-5, "bye") + assert_bytesplice_result("byehello", S("hello"), 0...0, "bye") + assert_bytesplice_result("byeello", S("hello"), 0..0, "bye") + assert_bytesplice_result("byeello", S("hello"), 0...1, "bye") + assert_bytesplice_result("byello", S("hello"), 0..1, "bye") + assert_bytesplice_result("bye", S("hello"), 0..-1, "bye") + assert_bytesplice_result("bye", S("hello"), 0...5, "bye") + assert_bytesplice_result("bye", S("hello"), 0...6, "bye") + assert_bytesplice_result("llolo", s = S("hello"), 0..2, s, 2..4) + + assert_bytesplice_raise(RangeError, S("hello"), -5...-5, "bye", -6...-6) + assert_bytesplice_result("byehello", S("hello"), -5...-5, "bye", 0..-1) + assert_bytesplice_result("byehello", S("hello"), 0...0, "bye", 0..-1) + assert_bytesplice_result("bhello", S("hello"), 0...0, "bye", 0..0) + assert_bytesplice_result("byhello", S("hello"), 0...0, "bye", 0..1) + assert_bytesplice_result("byehello", S("hello"), 0...0, "bye", 0..2) + assert_bytesplice_result("yehello", S("hello"), 0...0, "bye", 1..2) + + assert_bytesplice_raise(TypeError, S("hello"), 0, "bye") + + assert_bytesplice_raise(IndexError, S("こんにちは"), -16, 0, "bye") + assert_bytesplice_result("byeこんにちは", S("こんにちは"), -15, 0, "bye") + assert_bytesplice_result("byeこんにちは", S("こんにちは"), 0, 0, "bye") + assert_bytesplice_raise(IndexError, S("こんにちは"), 1, 0, "bye") + assert_bytesplice_raise(IndexError, S("こんにちは"), 0, 1, "bye") + assert_bytesplice_raise(IndexError, S("こんにちは"), 0, 2, "bye") + assert_bytesplice_result("byeんにちは", S("こんにちは"), 0, 3, "bye") + assert_bytesplice_result("こんにちはbye", S("こんにちは"), 15, 0, "bye") + + assert_bytesplice_raise(IndexError, S("こんにちは"), 0, 0, "さようなら", -16, 0) + assert_bytesplice_result("こんにちはさようなら", S("こんにちは"), 15, 0, "さようなら", 0, 15) + assert_bytesplice_result("さようなら", S("こんにちは"), 0, 15, "さようなら", 0, 15) + assert_bytesplice_result("さんにちは", S("こんにちは"), 0, 3, "さようなら", 0, 3) + assert_bytesplice_result("さようちは", S("こんにちは"), 0, 9, "さようなら", 0, 9) + assert_bytesplice_result("ようなちは", S("こんにちは"), 0, 9, "さようなら", 3, 9) + assert_bytesplice_result("ようちは", S("こんにちは"), 0, 9, "さようなら", 3, 6) + assert_bytesplice_result("ようならちは", S("こんにちは"), 0, 9, "さようなら", 3, 12) + assert_bytesplice_raise(IndexError, S("こんにちは"), 0, 15, "さようなら", -16, 0) + assert_bytesplice_raise(IndexError, S("こんにちは"), 0, 15, "さようなら", 1, 0) + assert_bytesplice_raise(IndexError, S("こんにちは"), 0, 15, "さようなら", 2, 0) + assert_bytesplice_raise(IndexError, S("こんにちは"), 0, 15, "さようなら", 0, 1) + assert_bytesplice_raise(IndexError, S("こんにちは"), 0, 15, "さようなら", 0, 2) + assert_bytesplice_result("にちはちは", s = S("こんにちは"), 0, 9, s, 6, 9) + + assert_bytesplice_result("", S(""), 0, 0, "") + assert_bytesplice_result("xxx", S(""), 0, 0, "xxx") + + assert_bytesplice_raise(ArgumentError, S("hello"), 0, 5, "bye", 0) + assert_bytesplice_raise(ArgumentError, S("hello"), 0, 5, "bye", 0..-1) + assert_bytesplice_raise(ArgumentError, S("hello"), 0..-1, "bye", 0, 3) + end + + def test_append_bytes_into_binary + buf = S("".b) + assert_equal Encoding::BINARY, buf.encoding + + buf.append_as_bytes(S("hello")) + assert_equal "hello".b, buf + assert_equal Encoding::BINARY, buf.encoding + + buf.append_as_bytes(S("こんにちは")) + assert_equal S("helloこんにちは".b), buf + assert_equal Encoding::BINARY, buf.encoding + end + + def test_append_bytes_into_utf8 + buf = S("") + assert_equal Encoding::UTF_8, buf.encoding + + buf.append_as_bytes(S("hello")) + assert_equal S("hello"), buf + assert_equal Encoding::UTF_8, buf.encoding + assert_predicate buf, :ascii_only? + assert_predicate buf, :valid_encoding? + + buf.append_as_bytes(S("こんにちは")) + assert_equal S("helloこんにちは"), buf + assert_equal Encoding::UTF_8, buf.encoding + refute_predicate buf, :ascii_only? + assert_predicate buf, :valid_encoding? + + buf.append_as_bytes(S("\xE2\x82".b)) + assert_equal S("helloこんにちは\xE2\x82"), buf + assert_equal Encoding::UTF_8, buf.encoding + refute_predicate buf, :valid_encoding? + + buf.append_as_bytes(S("\xAC".b)) + assert_equal S("helloこんにちは€"), buf + assert_equal Encoding::UTF_8, buf.encoding + assert_predicate buf, :valid_encoding? + end + + def test_append_bytes_into_utf32 + buf = S("abc".encode(Encoding::UTF_32LE)) + assert_equal Encoding::UTF_32LE, buf.encoding + + buf.append_as_bytes("def") + assert_equal Encoding::UTF_32LE, buf.encoding + refute_predicate buf, :valid_encoding? + end + + def test_chilled_string + chilled_string = eval('"chilled"') + + assert_not_predicate chilled_string, :frozen? + + assert_not_predicate chilled_string.dup, :frozen? + assert_not_predicate chilled_string.clone, :frozen? + + # @+ treat the original string as frozen + assert_not_predicate(+chilled_string, :frozen?) + assert_not_same chilled_string, +chilled_string + + # @- treat the original string as mutable + assert_predicate(-chilled_string, :frozen?) + assert_not_same chilled_string, -chilled_string + end + + def test_chilled_string_setivar + deprecated = Warning[:deprecated] + Warning[:deprecated] = false + + String.class_eval <<~RUBY, __FILE__, __LINE__ + 1 + def setivar! + @ivar = 42 + @ivar + end + RUBY + chilled_string = eval('"chilled"') + begin + assert_equal 42, chilled_string.setivar! + ensure + String.undef_method(:setivar!) + end + ensure + Warning[:deprecated] = deprecated + end + + def test_chilled_string_substring + deprecated = Warning[:deprecated] + Warning[:deprecated] = false + chilled_string = eval('"a chilled string."') + substring = chilled_string[0..-1] + assert_equal("a chilled string.", substring) + chilled_string[0..-1] = "This string is defrosted." + assert_equal("a chilled string.", substring) + ensure + Warning[:deprecated] = deprecated + end + + def test_encode_fallback_raise_memory_leak + { + "hash" => <<~RUBY, + fallback = Hash.new { raise MyError } + RUBY + "proc" => <<~RUBY, + fallback = proc { raise MyError } + RUBY + "method" => <<~RUBY, + def my_method(_str) = raise MyError + fallback = method(:my_method) + RUBY + "aref" => <<~RUBY, + fallback = Object.new + def fallback.[](_str) = raise MyError + RUBY + }.each do |type, code| + assert_no_memory_leak([], '', <<~RUBY, "fallback type is #{type}", rss: true) + class MyError < StandardError; end + + #{code} + + 100_000.times do |i| + "\\ufffd".encode(Encoding::US_ASCII, fallback:) + rescue MyError + end + RUBY + end + end + + def test_encode_fallback_too_big_memory_leak + { + "hash" => <<~RUBY, + fallback = Hash.new { "\\uffee" } + RUBY + "proc" => <<~RUBY, + fallback = proc { "\\uffee" } + RUBY + "method" => <<~RUBY, + def my_method(_str) = "\\uffee" + fallback = method(:my_method) + RUBY + "aref" => <<~RUBY, + fallback = Object.new + def fallback.[](_str) = "\\uffee" + RUBY + }.each do |type, code| + assert_no_memory_leak([], '', <<~RUBY, "fallback type is #{type}", rss: true) + class MyError < StandardError; end + + #{code} + + 100_000.times do |i| + "\\ufffd".encode(Encoding::US_ASCII, fallback:) + rescue ArgumentError + end + RUBY + end + end + + def test_encode_fallback_not_string_memory_leak + { + "hash" => <<~RUBY, + fallback = Hash.new { Object.new } + RUBY + "proc" => <<~RUBY, + fallback = proc { Object.new } + RUBY + "method" => <<~RUBY, + def my_method(_str) = Object.new + fallback = method(:my_method) + RUBY + "aref" => <<~RUBY, + fallback = Object.new + def fallback.[](_str) = Object.new + RUBY + }.each do |type, code| + assert_no_memory_leak([], '', <<~RUBY, "fallback type is #{type}", rss: true) + class MyError < StandardError; end + + #{code} + + 100_000.times do |i| + "\\ufffd".encode(Encoding::US_ASCII, fallback:) + rescue TypeError + end + RUBY + end + end + + private + + def assert_bytesplice_result(expected, s, *args) + assert_equal(expected, s.send(:bytesplice, *args)) + assert_equal(expected, s) + end + + def assert_bytesplice_raise(e, s, *args) + assert_raise(e) { s.send(:bytesplice, *args) } + end + + def assert_index_like(method, expected, string, match, *rest) + message = "#{method} with string does not affect $~" + /.*/ =~ message + md_before = $~ + assert_equal(expected, string.__send__(method, match, *rest)) + md_after = $~ + case match + when Regexp + if expected + assert_not_nil(md_after) + assert_not_same(md_before, md_after) + else + assert_nil(md_after) + end + else + assert_same(md_before, md_after) + end + md_after + end + + def assert_index(expected, string, match, *rest) + assert_index_like(:index, expected, string, match, *rest) + end + + def assert_rindex(expected, string, match, *rest) + assert_index_like(:rindex, expected, string, match, *rest) + end + + def assert_byteindex(expected, string, match, *rest) + assert_index_like(:byteindex, expected, string, match, *rest) + end + + def assert_byterindex(expected, string, match, *rest) + assert_index_like(:byterindex, expected, string, match, *rest) + end + + def assert_undump(str, *rest) + assert_equal(str, str.dump.undump, *rest) + end +end + +class TestString2 < TestString + def initialize(*args) + super + @cls = S2 + end +end |