diff options
Diffstat (limited to 'test/stringio')
| -rw-r--r-- | test/stringio/test_stringio.rb | 761 |
1 files changed, 751 insertions, 10 deletions
diff --git a/test/stringio/test_stringio.rb b/test/stringio/test_stringio.rb index de15ab5508..f5169f641a 100644 --- a/test/stringio/test_stringio.rb +++ b/test/stringio/test_stringio.rb @@ -1,9 +1,8 @@ +# frozen_string_literal: false require 'test/unit' require 'stringio' -dir = File.expand_path(__FILE__) -2.times {dir = File.dirname(dir)} -$:.replace([File.join(dir, "ruby")] | $:) -require 'ut_eof' +require "rbconfig/sizeof" +require_relative '../ruby/ut_eof' class TestStringIO < Test::Unit::TestCase include TestEOF @@ -15,29 +14,771 @@ class TestStringIO < Test::Unit::TestCase include TestEOF::Seek - def test_truncate # [ruby-dev:24190] + def test_initialize + assert_kind_of StringIO, StringIO.new + assert_kind_of StringIO, StringIO.new('str') + assert_kind_of StringIO, StringIO.new('str', 'r+') + assert_raise(ArgumentError) { StringIO.new('', 'x') } + assert_raise(ArgumentError) { StringIO.new('', 'rx') } + assert_raise(ArgumentError) { StringIO.new('', 'rbt') } + assert_raise(TypeError) { StringIO.new(nil) } + assert_raise(TypeError) { StringIO.new('str', nil) } + + o = Object.new + def o.to_str + nil + end + assert_raise(TypeError) { StringIO.new(o) } + def o.to_str + 'str' + end + assert_kind_of StringIO, StringIO.new(o) + end + + def test_truncate io = StringIO.new("") io.puts "abc" io.truncate(0) io.puts "def" - assert_equal("\0\0\0\0def\n", io.string) + assert_equal("\0\0\0\0def\n", io.string, "[ruby-dev:24190]") + assert_raise(Errno::EINVAL) { io.truncate(-1) } + io.truncate(10) + assert_equal("\0\0\0\0def\n\0\0", io.string) end - def test_seek_beyond_eof # [ruby-dev:24194] + def test_seek_beyond_eof io = StringIO.new n = 100 io.seek(n) io.print "last" - assert_equal("\0" * n + "last", io.string) + assert_equal("\0" * n + "last", io.string, "[ruby-dev:24194]") end - def test_overwrite # [ruby-core:03836] + def test_overwrite stringio = StringIO.new responses = ['', 'just another ruby', 'hacker'] responses.each do |resp| stringio.puts(resp) stringio.rewind end - assert_equal("hacker\nother ruby\n", stringio.string) + assert_equal("hacker\nother ruby\n", stringio.string, "[ruby-core:3836]") + end + + def test_gets + assert_equal(nil, StringIO.new("").gets) + assert_equal("\n", StringIO.new("\n").gets) + assert_equal("a\n", StringIO.new("a\n").gets) + assert_equal("a\n", StringIO.new("a\nb\n").gets) + assert_equal("a", StringIO.new("a").gets) + assert_equal("a\n", StringIO.new("a\nb").gets) + assert_equal("abc\n", StringIO.new("abc\n\ndef\n").gets) + assert_equal("abc\n\ndef\n", StringIO.new("abc\n\ndef\n").gets(nil)) + assert_equal("abc\n\n", StringIO.new("abc\n\ndef\n").gets("")) + stringio = StringIO.new("abc\n\ndef\n") + assert_equal("abc\n\n", stringio.gets("")) + assert_equal("def\n", stringio.gets("")) + assert_raise(TypeError){StringIO.new("").gets(1, 1)} + assert_nothing_raised {StringIO.new("").gets(nil, nil)} + + assert_string("", Encoding::UTF_8, StringIO.new("foo").gets(0)) + end + + def test_gets_chomp + assert_equal(nil, StringIO.new("").gets(chomp: true)) + assert_equal("", StringIO.new("\n").gets(chomp: true)) + assert_equal("a", StringIO.new("a\n").gets(chomp: true)) + assert_equal("a", StringIO.new("a\nb\n").gets(chomp: true)) + assert_equal("a", StringIO.new("a").gets(chomp: true)) + assert_equal("a", StringIO.new("a\nb").gets(chomp: true)) + assert_equal("abc", StringIO.new("abc\n\ndef\n").gets(chomp: true)) + assert_equal("abc\n\ndef", StringIO.new("abc\n\ndef\n").gets(nil, chomp: true)) + assert_equal("abc\n", StringIO.new("abc\n\ndef\n").gets("", chomp: true)) + stringio = StringIO.new("abc\n\ndef\n") + assert_equal("abc\n", stringio.gets("", chomp: true)) + assert_equal("def", stringio.gets("", chomp: true)) + + assert_string("", Encoding::UTF_8, StringIO.new("\n").gets(chomp: true)) + end + + def test_gets_chomp_eol + assert_equal(nil, StringIO.new("").gets(chomp: true)) + assert_equal("", StringIO.new("\r\n").gets(chomp: true)) + assert_equal("a", StringIO.new("a\r\n").gets(chomp: true)) + assert_equal("a", StringIO.new("a\r\nb\r\n").gets(chomp: true)) + assert_equal("a", StringIO.new("a").gets(chomp: true)) + assert_equal("a", StringIO.new("a\r\nb").gets(chomp: true)) + assert_equal("abc", StringIO.new("abc\r\n\r\ndef\r\n").gets(chomp: true)) + assert_equal("abc\r\n\r\ndef", StringIO.new("abc\r\n\r\ndef\r\n").gets(nil, chomp: true)) + assert_equal("abc\r\n", StringIO.new("abc\r\n\r\ndef\r\n").gets("", chomp: true)) + stringio = StringIO.new("abc\r\n\r\ndef\r\n") + assert_equal("abc\r\n", stringio.gets("", chomp: true)) + assert_equal("def", stringio.gets("", chomp: true)) + end + + def test_readlines + assert_equal([], StringIO.new("").readlines) + assert_equal(["\n"], StringIO.new("\n").readlines) + assert_equal(["a\n"], StringIO.new("a\n").readlines) + assert_equal(["a\n", "b\n"], StringIO.new("a\nb\n").readlines) + assert_equal(["a"], StringIO.new("a").readlines) + assert_equal(["a\n", "b"], StringIO.new("a\nb").readlines) + assert_equal(["abc\n", "\n", "def\n"], StringIO.new("abc\n\ndef\n").readlines) + assert_equal(["abc\n\ndef\n"], StringIO.new("abc\n\ndef\n").readlines(nil), "[ruby-dev:34591]") + assert_equal(["abc\n\n", "def\n"], StringIO.new("abc\n\ndef\n").readlines("")) + end + + def test_write + s = "" + f = StringIO.new(s, "w") + f.print("foo") + f.close + assert_equal("foo", s) + + f = StringIO.new(s, File::WRONLY) + f.print("bar") + f.close + assert_equal("bar", s) + + f = StringIO.new(s, "a") + o = Object.new + def o.to_s; "baz"; end + f.print(o) + f.close + assert_equal("barbaz", s) + ensure + f.close unless f.closed? + end + + def test_write_nonblock_no_exceptions + s = "" + f = StringIO.new(s, "w") + f.write_nonblock("foo", exception: false) + f.close + assert_equal("foo", s) + end + + def test_write_nonblock + s = "" + f = StringIO.new(s, "w") + f.write_nonblock("foo") + f.close + assert_equal("foo", s) + + f = StringIO.new(s, File::WRONLY) + f.write_nonblock("bar") + f.close + assert_equal("bar", s) + + f = StringIO.new(s, "a") + o = Object.new + def o.to_s; "baz"; end + f.write_nonblock(o) + f.close + assert_equal("barbaz", s) + ensure + f.close unless f.closed? + end + + def test_write_infection + bug9769 = '[ruby-dev:48118] [Bug #9769]' + s = "".untaint + f = StringIO.new(s, "w") + f.print("bar".taint) + f.close + assert_predicate(s, :tainted?, bug9769) + ensure + f.close unless f.closed? + end + + def test_write_encoding + s = "".force_encoding(Encoding::UTF_8) + f = StringIO.new(s) + f.print("\u{3053 3093 306b 3061 306f ff01}".b) + assert_equal(Encoding::UTF_8, s.encoding, "honor the original encoding over ASCII-8BIT") + end + + def test_write_integer_overflow + long_max = (1 << (RbConfig::SIZEOF["long"] * 8 - 1)) - 1 + f = StringIO.new + f.pos = long_max + assert_raise(ArgumentError) { + f.write("pos + len overflows") + } + end + + def test_write_with_multiple_arguments + s = "" + f = StringIO.new(s, "w") + f.write("foo", "bar") + f.close + assert_equal("foobar", s) + ensure + f.close unless f.closed? + end + + def test_set_encoding + bug10285 = '[ruby-core:65240] [Bug #10285]' + f = StringIO.new() + f.set_encoding(Encoding::ASCII_8BIT) + f.write("quz \x83 mat".b) + s = "foo \x97 bar".force_encoding(Encoding::WINDOWS_1252) + assert_nothing_raised(Encoding::CompatibilityError, bug10285) { + f.write(s) + } + assert_equal(Encoding::ASCII_8BIT, f.string.encoding, bug10285) + + bug11827 = '[ruby-core:72189] [Bug #11827]' + f = StringIO.new("foo\x83".freeze) + assert_nothing_raised(RuntimeError, bug11827) { + f.set_encoding(Encoding::ASCII_8BIT) + } + assert_equal("foo\x83".b, f.gets) + end + + def test_mode_error + f = StringIO.new("", "r") + assert_raise(IOError) { f.write("foo") } + + f = StringIO.new("", "w") + assert_raise(IOError) { f.read } + + assert_raise(Errno::EACCES) { StringIO.new("".freeze, "w") } + s = "" + f = StringIO.new(s, "w") + s.freeze + assert_raise(IOError) { f.write("foo") } + + assert_raise(IOError) { StringIO.allocate.read } + ensure + f.close unless f.closed? + end + + def test_open + s = "" + StringIO.open("foo") {|f| s = f.read } + assert_equal("foo", s) + end + + def test_isatty + assert_equal(false, StringIO.new("").isatty) + end + + def test_fsync + assert_equal(0, StringIO.new("").fsync) + end + + def test_sync + assert_equal(true, StringIO.new("").sync) + assert_equal(false, StringIO.new("").sync = false) + end + + def test_set_fcntl + assert_raise(NotImplementedError) { StringIO.new("").fcntl } + end + + def test_close + f = StringIO.new("") + f.close + assert_nil(f.close) + + f = StringIO.new("") + f.close_read + f.close_write + assert_nil(f.close) + ensure + f.close unless f.closed? + end + + def test_close_read + f = StringIO.new("") + f.close_read + assert_raise(IOError) { f.read } + assert_nothing_raised(IOError) {f.close_read} + f.close + + f = StringIO.new("", "w") + assert_raise(IOError) { f.close_read } + f.close + ensure + f.close unless f.closed? + end + + def test_close_write + f = StringIO.new("") + f.close_write + assert_raise(IOError) { f.write("foo") } + assert_nothing_raised(IOError) {f.close_write} + f.close + + f = StringIO.new("", "r") + assert_raise(IOError) { f.close_write } + f.close + ensure + f.close unless f.closed? + end + + def test_closed + f = StringIO.new("") + assert_equal(false, f.closed?) + f.close + assert_equal(true, f.closed?) + ensure + f.close unless f.closed? + end + + def test_closed_read + f = StringIO.new("") + assert_equal(false, f.closed_read?) + f.close_write + assert_equal(false, f.closed_read?) + f.close_read + assert_equal(true, f.closed_read?) + ensure + f.close unless f.closed? + end + + def test_closed_write + f = StringIO.new("") + assert_equal(false, f.closed_write?) + f.close_read + assert_equal(false, f.closed_write?) + f.close_write + assert_equal(true, f.closed_write?) + ensure + f.close unless f.closed? + end + + def test_dup + f1 = StringIO.new("1234") + assert_equal("1", f1.getc) + f2 = f1.dup + assert_equal("2", f2.getc) + assert_equal("3", f1.getc) + assert_equal("4", f2.getc) + assert_equal(nil, f1.getc) + assert_equal(true, f2.eof?) + f1.close + assert_equal(false, f2.closed?, '[ruby-core:48443]') + ensure + f1.close unless f1.closed? + f2.close unless f2.closed? + end + + def test_lineno + f = StringIO.new("foo\nbar\nbaz\n") + assert_equal([0, "foo\n"], [f.lineno, f.gets]) + assert_equal([1, "bar\n"], [f.lineno, f.gets]) + f.lineno = 1000 + assert_equal([1000, "baz\n"], [f.lineno, f.gets]) + assert_equal([1001, nil], [f.lineno, f.gets]) + ensure + f.close unless f.closed? + end + + def test_pos + f = StringIO.new("foo\nbar\nbaz\n") + assert_equal([0, "foo\n"], [f.pos, f.gets]) + assert_equal([4, "bar\n"], [f.pos, f.gets]) + assert_raise(Errno::EINVAL) { f.pos = -1 } + f.pos = 1 + assert_equal([1, "oo\n"], [f.pos, f.gets]) + assert_equal([4, "bar\n"], [f.pos, f.gets]) + assert_equal([8, "baz\n"], [f.pos, f.gets]) + assert_equal([12, nil], [f.pos, f.gets]) + ensure + f.close unless f.closed? + end + + def test_reopen + f = StringIO.new("foo\nbar\nbaz\n") + assert_equal("foo\n", f.gets) + f.reopen("qux\nquux\nquuux\n") + assert_equal("qux\n", f.gets) + + f2 = StringIO.new("") + f2.reopen(f) + assert_equal("quux\n", f2.gets) + ensure + f.close unless f.closed? + end + + def test_seek + f = StringIO.new("1234") + assert_raise(Errno::EINVAL) { f.seek(-1) } + f.seek(-1, 2) + assert_equal("4", f.getc) + assert_raise(Errno::EINVAL) { f.seek(1, 3) } + f.close + assert_raise(IOError) { f.seek(0) } + ensure + f.close unless f.closed? + end + + def test_each_byte + f = StringIO.new("1234") + a = [] + f.each_byte {|c| a << c } + assert_equal(%w(1 2 3 4).map {|c| c.ord }, a) + ensure + f.close unless f.closed? + end + + def test_getbyte + f = StringIO.new("1234") + assert_equal("1".ord, f.getbyte) + assert_equal("2".ord, f.getbyte) + assert_equal("3".ord, f.getbyte) + assert_equal("4".ord, f.getbyte) + assert_equal(nil, f.getbyte) + ensure + f.close unless f.closed? + end + + def test_ungetbyte + s = "foo\nbar\n" + t = StringIO.new(s, "r") + t.ungetbyte(0x41) + assert_equal(0x41, t.getbyte) + t.ungetbyte("qux") + assert_equal("quxfoo\n", t.gets) + t.set_encoding("utf-8") + t.ungetbyte(0x89) + t.ungetbyte(0x8e) + t.ungetbyte("\xe7") + t.ungetbyte("\xe7\xb4\x85") + assert_equal("\u7d05\u7389bar\n", t.gets) + assert_equal("q\u7d05\u7389bar\n", s) + t.pos = 1 + t.ungetbyte("\u{30eb 30d3 30fc}") + assert_equal(0, t.pos) + assert_equal("\u{30eb 30d3 30fc}\u7d05\u7389bar\n", s) + end + + def test_ungetc + s = "1234" + f = StringIO.new(s, "r") + assert_nothing_raised { f.ungetc("x") } + assert_equal("x", f.getc) # bug? -> it's a feature from 1.9. + assert_equal("1", f.getc) + + s = "1234" + f = StringIO.new(s, "r") + assert_equal("1", f.getc) + f.ungetc("y".ord) + assert_equal("y", f.getc) + assert_equal("2", f.getc) + + assert_raise(RangeError) {f.ungetc(0x1ffffff)} + assert_raise(RangeError) {f.ungetc(0xffffffffffffff)} + ensure + f.close unless f.closed? + end + + def test_readchar + f = StringIO.new("1234") + a = "" + assert_raise(EOFError) { loop { a << f.readchar } } + assert_equal("1234", a) + end + + def test_readbyte + f = StringIO.new("1234") + a = [] + assert_raise(EOFError) { loop { a << f.readbyte } } + assert_equal("1234".unpack("C*"), a) + end + + def test_each_char + f = StringIO.new("1234") + assert_equal(%w(1 2 3 4), f.each_char.to_a) + end + + def test_each_codepoint + f = StringIO.new("1234") + assert_equal([49, 50, 51, 52], f.each_codepoint.to_a) + end + + def test_gets2 + f = StringIO.new("foo\nbar\nbaz\n") + assert_equal("fo", f.gets(2)) + + o = Object.new + def o.to_str; "z"; end + assert_equal("o\nbar\nbaz", f.gets(o)) + + f = StringIO.new("foo\nbar\nbaz\n") + assert_equal("foo\nbar\nbaz", f.gets("az")) + f = StringIO.new("a" * 10000 + "zz!") + assert_equal("a" * 10000 + "zz", f.gets("zz")) + f = StringIO.new("a" * 10000 + "zz!") + assert_equal("a" * 10000 + "zz!", f.gets("zzz")) + + bug4112 = '[ruby-dev:42674]' + ["a".encode("utf-16be"), "\u3042"].each do |s| + assert_equal(s, StringIO.new(s).gets(1), bug4112) + assert_equal(s, StringIO.new(s).gets(nil, 1), bug4112) + end + end + + def test_each + f = StringIO.new("foo\nbar\nbaz\n") + assert_equal(["foo\n", "bar\n", "baz\n"], f.each.to_a) + f.rewind + assert_equal(["foo", "bar", "baz"], f.each(chomp: true).to_a) + f = StringIO.new("foo\nbar\n\nbaz\n") + assert_equal(["foo\nbar\n\n", "baz\n"], f.each("").to_a) + f.rewind + assert_equal(["foo\nbar\n", "baz"], f.each("", chomp: true).to_a) + + f = StringIO.new("foo\r\nbar\r\n\r\nbaz\r\n") + assert_equal(["foo\r\nbar\r\n\r\n", "baz\r\n"], f.each("").to_a) + f.rewind + assert_equal(["foo\r\nbar\r\n", "baz"], f.each("", chomp: true).to_a) + end + + def test_putc + s = "" + f = StringIO.new(s, "w") + f.putc("1") + f.putc("2") + f.putc("3") + f.close + assert_equal("123", s) + + s = "foo" + f = StringIO.new(s, "a") + f.putc("1") + f.putc("2") + f.putc("3") + f.close + assert_equal("foo123", s) + end + + def test_putc_nonascii + s = "" + f = StringIO.new(s, "w") + f.putc("\u{3042}") + f.putc(0x3044) + f.close + assert_equal("\u{3042}D", s) + + s = "foo" + f = StringIO.new(s, "a") + f.putc("\u{3042}") + f.putc(0x3044) + f.close + assert_equal("foo\u{3042}D", s) + end + + def test_read + f = StringIO.new("\u3042\u3044") + assert_raise(ArgumentError) { f.read(-1) } + assert_raise(ArgumentError) { f.read(1, 2, 3) } + assert_equal("\u3042\u3044", f.read) + assert_nil(f.read(1)) + f.rewind + assert_equal("\u3042\u3044".force_encoding(Encoding::ASCII_8BIT), f.read(f.size)) + + bug5207 = '[ruby-core:39026]' + f.rewind + assert_equal("\u3042\u3044", f.read(nil, nil), bug5207) + f.rewind + s = "" + assert_same(s, f.read(nil, s)) + assert_equal("\u3042\u3044", s, bug5207) + f.rewind + # not empty buffer + s = "0123456789" + assert_same(s, f.read(nil, s)) + assert_equal("\u3042\u3044", s) + + bug13806 = '[ruby-core:82349] [Bug #13806]' + assert_string("", Encoding::UTF_8, f.read, bug13806) + assert_string("", Encoding::UTF_8, f.read(nil, nil), bug13806) + s.force_encoding(Encoding::US_ASCII) + assert_same(s, f.read(nil, s)) + assert_string("", Encoding::UTF_8, s, bug13806) + end + + def test_readpartial + f = StringIO.new("\u3042\u3044") + assert_raise(ArgumentError) { f.readpartial(-1) } + assert_raise(ArgumentError) { f.readpartial(1, 2, 3) } + assert_equal("\u3042\u3044".force_encoding(Encoding::ASCII_8BIT), f.readpartial(100)) + f.rewind + assert_equal("\u3042\u3044".force_encoding(Encoding::ASCII_8BIT), f.readpartial(f.size)) + f.rewind + # not empty buffer + s = '0123456789' + assert_equal("\u3042\u3044".force_encoding(Encoding::ASCII_8BIT), f.readpartial(f.size, s)) + end + + def test_read_nonblock + f = StringIO.new("\u3042\u3044") + assert_raise(ArgumentError) { f.read_nonblock(-1) } + assert_raise(ArgumentError) { f.read_nonblock(1, 2, 3) } + assert_equal("\u3042\u3044".force_encoding("BINARY"), f.read_nonblock(100)) + assert_raise(EOFError) { f.read_nonblock(10) } + f.rewind + assert_equal("\u3042\u3044".force_encoding(Encoding::ASCII_8BIT), f.read_nonblock(f.size)) + end + + def test_read_nonblock_no_exceptions + f = StringIO.new("\u3042\u3044") + assert_raise(ArgumentError) { f.read_nonblock(-1, exception: false) } + assert_raise(ArgumentError) { f.read_nonblock(1, 2, 3, exception: false) } + assert_raise(ArgumentError) { f.read_nonblock } + assert_equal("\u3042\u3044".force_encoding(Encoding::ASCII_8BIT), f.read_nonblock(100, exception: false)) + assert_equal(nil, f.read_nonblock(10, exception: false)) + f.rewind + assert_equal("\u3042\u3044".force_encoding(Encoding::ASCII_8BIT), f.read_nonblock(f.size)) + f.rewind + # not empty buffer + s = '0123456789' + assert_equal("\u3042\u3044".force_encoding(Encoding::ASCII_8BIT), f.read_nonblock(f.size, s)) + end + + def test_sysread + f = StringIO.new("sysread \u{30c6 30b9 30c8}") + assert_equal "sysread \u{30c6 30b9 30c8}", f.sysread + assert_equal "", f.sysread + assert_raise(EOFError) { f.sysread(1) } + f.rewind + assert_equal Encoding::ASCII_8BIT, f.sysread(3).encoding + end + + def test_size + f = StringIO.new("1234") + assert_equal(4, f.size) + end + + # This test is should in ruby/test_method.rb + # However this test depends on stringio library, + # we write it here. + class C < StringIO + alias old_init initialize + attr_reader :foo + def initialize + @foo = :ok + old_init + end + end + + def test_method + assert_equal(:ok, C.new.foo, 'Bug #632 [ruby-core:19282]') + end + + def test_ungetc_pos + b = '\\b00010001 \\B00010001 \\b1 \\B1 \\b000100011' + s = StringIO.new( b ) + expected_pos = 0 + while n = s.getc + assert_equal( expected_pos + 1, s.pos ) + + s.ungetc( n ) + assert_equal( expected_pos, s.pos ) + assert_equal( n, s.getc ) + + expected_pos += 1 + end + end + + def test_ungetc_padding + s = StringIO.new() + s.pos = 2 + s.ungetc("a") + assert_equal("\0""a", s.string) + s.pos = 0 + s.ungetc("b") + assert_equal("b""\0""a", s.string) + end + + def test_ungetbyte_pos + b = '\\b00010001 \\B00010001 \\b1 \\B1 \\b000100011' + s = StringIO.new( b ) + expected_pos = 0 + while n = s.getbyte + assert_equal( expected_pos + 1, s.pos ) + + s.ungetbyte( n ) + assert_equal( expected_pos, s.pos ) + assert_equal( n, s.getbyte ) + + expected_pos += 1 + end + end + + def test_ungetbyte_padding + s = StringIO.new() + s.pos = 2 + s.ungetbyte("a".ord) + assert_equal("\0""a", s.string) + s.pos = 0 + s.ungetbyte("b".ord) + assert_equal("b""\0""a", s.string) + end + + def test_frozen + s = StringIO.new + s.freeze + bug = '[ruby-core:33648]' + assert_raise(FrozenError, bug) {s.puts("foo")} + assert_raise(FrozenError, bug) {s.string = "foo"} + assert_raise(FrozenError, bug) {s.reopen("")} + end + + def test_frozen_string + s = StringIO.new("".freeze) + bug = '[ruby-core:48530]' + assert_raise(IOError, bug) {s.write("foo")} + assert_raise(IOError, bug) {s.ungetc("a")} + assert_raise(IOError, bug) {s.ungetbyte("a")} + end + + def test_readlines_limit_0 + assert_raise(ArgumentError, "[ruby-dev:43392]") { StringIO.new.readlines(0) } + end + + def test_each_line_limit_0 + assert_raise(ArgumentError, "[ruby-dev:43392]") { StringIO.new.each_line(0){} } + assert_raise(ArgumentError, "[ruby-dev:43392]") { StringIO.new.each_line("a",0){} } + end + + def test_binmode + s = StringIO.new + s.set_encoding('utf-8') + assert_same s, s.binmode + + bug_11945 = '[ruby-core:72699] [Bug #11945]' + assert_equal Encoding::ASCII_8BIT, s.external_encoding, bug_11945 + end + + def test_new_block_warning + assert_warn(/does not take block/) do + StringIO.new {} + end + end + + def test_overflow + skip if RbConfig::SIZEOF["void*"] > RbConfig::SIZEOF["long"] + limit = (1 << (RbConfig::SIZEOF["void*"]*8-1)) - 0x10 + assert_separately(%w[-rstringio], "#{<<-"begin;"}\n#{<<-"end;"}") + begin; + limit = #{limit} + ary = [] + while true + x = "a"*0x100000 + break if [x].pack("p").unpack("i!")[0] < 0 + ary << x + skip if ary.size > 100 + end + s = StringIO.new(x) + s.gets("xxx", limit) + assert_equal(0x100000, s.pos) + end; + end + + def assert_string(content, encoding, str, mesg = nil) + assert_equal([content, encoding], [str, str.encoding], mesg) end end |