require 'test/unit' require 'stringio' require_relative '../ruby/ut_eof' class TestStringIO < Test::Unit::TestCase include TestEOF def open_file(content) f = StringIO.new(content) yield f end alias open_file_rw open_file include TestEOF::Seek def test_truncate io = StringIO.new("") io.puts "abc" io.truncate(0) io.puts "def" 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 io = StringIO.new n = 100 io.seek(n) io.print "last" assert_equal("\0" * n + "last", io.string, "[ruby-dev:24194]") end 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, "[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("")) 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_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_raise(IOError) { f.close } f = StringIO.new("") f.close_read f.close_write assert_raise(IOError) { 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_raise(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_raise(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(true, f2.closed?) 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) end def test_ungetc s = "1234" f = StringIO.new(s, "r") assert_nothing_raised { f.ungetc("x") } assert_equal("x", f.getc) # bug? 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) 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")) end def test_each f = StringIO.new("foo\nbar\nbaz\n") assert_equal(["foo\n", "bar\n", "baz\n"], f.each.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_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) f.rewind assert_equal("\u3042\u3044".force_encoding(Encoding::ASCII_8BIT), f.read(f.size)) 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 end