ruby/test/stringio/test_stringio.rb

976 строки
27 KiB
Ruby

# frozen_string_literal: false
require 'test/unit'
require 'stringio'
require "rbconfig/sizeof"
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_version
assert_kind_of(String, StringIO::VERSION)
end
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) }
o = Object.new
def o.to_str
nil
end
assert_raise(TypeError) { StringIO.new(o) }
o = Object.new
def o.to_str
'str'
end
assert_kind_of StringIO, StringIO.new(o)
end
def test_truncate
io = StringIO.new("")
io.puts "abc"
assert_equal(0, 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) }
assert_equal(0, 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(""))
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_utf_16
stringio = StringIO.new("line1\nline2\nline3\n".encode("utf-16le"))
assert_equal("line1\n".encode("utf-16le"), stringio.gets)
assert_equal("line2\n".encode("utf-16le"), stringio.gets)
assert_equal("line3\n".encode("utf-16le"), stringio.gets)
assert_nil(stringio.gets)
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\n", StringIO.new("abc\n\ndef\n").gets(nil, chomp: true))
assert_equal("abc", StringIO.new("abc\n\ndef\n").gets("", chomp: true))
stringio = StringIO.new("abc\n\ndef\n")
assert_equal("abc", stringio.gets("", chomp: true))
assert_equal("def\n", stringio.gets("", chomp: true))
assert_string("", Encoding::UTF_8, StringIO.new("\n").gets(chomp: true))
assert_equal("", StringIO.new("ab").gets("ab", 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\r\n", StringIO.new("abc\r\n\r\ndef\r\n").gets(nil, chomp: true))
assert_equal("abc", 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", stringio.gets("", chomp: true))
assert_equal("def\r\n", 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_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_encoding_conversion
convertible = "\u{3042}"
inconvertible = "\u{1f363}"
conversion_encoding = Encoding::Windows_31J
s = StringIO.new.set_encoding(conversion_encoding)
s.write(convertible)
assert_equal(conversion_encoding, s.string.encoding)
s = StringIO.new.set_encoding(Encoding::UTF_8)
s.write("foo".force_encoding("ISO-8859-1"), convertible)
assert_equal(Encoding::UTF_8, s.string.encoding)
s = StringIO.new.set_encoding(Encoding::US_ASCII)
s.write("foo".force_encoding("US-ASCII"), convertible)
assert_equal(Encoding::UTF_8, s.string.encoding)
all_assertions do |a|
[
inconvertible,
convertible + inconvertible,
[convertible, inconvertible],
["a", inconvertible],
].each do |data|
a.for(data.inspect) do
s = StringIO.new.set_encoding(conversion_encoding)
assert_raise(Encoding::CompatibilityError) do
s.write(*data)
end
end
end
end
end
def test_write_integer_overflow
f = StringIO.new
f.pos = RbConfig::LIMITS["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)
f = StringIO.new()
f.set_encoding("ISO-8859-16:ISO-8859-1")
assert_equal(Encoding::ISO_8859_16, f.external_encoding)
assert_equal(Encoding::ISO_8859_16, f.string.encoding)
assert_nil(f.internal_encoding)
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_each_byte_closed
f = StringIO.new("1234")
assert_equal("1".ord, f.each_byte {|c| f.close; break c })
f = StringIO.new("1234")
assert_raise(IOError) do
f.each_byte { f.close }
end
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)
assert_nothing_raised {t.ungetbyte(-1)}
assert_nothing_raised {t.ungetbyte(256)}
assert_nothing_raised {t.ungetbyte(1<<64)}
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_char_closed
f = StringIO.new("1234")
assert_equal("1", f.each_char {|c| f.close; break c })
f = StringIO.new("1234")
assert_raise(IOError) do
f.each_char { f.close }
end
end
def test_each_codepoint
f = StringIO.new("1234")
assert_equal([49, 50, 51, 52], f.each_codepoint.to_a)
end
def test_each_codepoint_closed
f = StringIO.new("1234")
assert_equal("1".ord, f.each_codepoint {|c| f.close; break c })
f = StringIO.new("1234")
assert_raise(IOError) do
f.each_codepoint { f.close }
end
end
def test_each_codepoint_enumerator
io = StringIO.new('你好построить')
chinese_part = io.each_codepoint.take(2).pack('U*')
russian_part = io.read(40).force_encoding('UTF-8')
assert_equal("你好", chinese_part)
assert_equal("построить", russian_part)
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_string_sep
f = StringIO.new('a||b||c')
assert_equal(["a||", "b||", "c"], f.each("||").to_a)
f.rewind
assert_equal(["a", "b", "c"], f.each("||", chomp: true).to_a)
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\n\nbaz\n")
assert_equal(["foo\nbar\n\n\n", "baz\n"], f.each("").to_a)
f.rewind
assert_equal(["foo\nbar", "baz\n"], f.each("", chomp: true).to_a)
f = StringIO.new("foo\r\nbar\r\n\r\n\r\nbaz\r\n")
assert_equal(["foo\r\nbar\r\n\r\n\r\n", "baz\r\n"], f.each("").to_a)
f.rewind
assert_equal(["foo\r\nbar", "baz\r\n"], f.each("", chomp: true).to_a)
f = StringIO.new("abc\n\ndef\n")
assert_equal(["ab", "c\n", "\nd", "ef", "\n"], f.each(nil, 2, 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_pread
f = StringIO.new("pread")
f.read
assert_equal "pre".b, f.pread(3, 0)
assert_equal "read".b, f.pread(4, 1)
assert_equal Encoding::ASCII_8BIT, f.pread(4, 1).encoding
buf = "".b
f.pread(3, 0, buf)
assert_equal "pre".b, buf
f.pread(4, 1, buf)
assert_equal "read".b, buf
assert_raise(EOFError) { f.pread(1, 5) }
assert_raise(ArgumentError) { f.pread(-1, 0) }
assert_raise(Errno::EINVAL) { f.pread(3, -1) }
assert_equal "".b, StringIO.new("").pread(0, 0)
assert_equal "".b, StringIO.new("").pread(0, -10)
buf = "stale".b
assert_equal "stale".b, StringIO.new("").pread(0, 0, buf)
assert_equal "stale".b, buf
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_ungetc_fill
count = 100
s = StringIO.new
s.print 'a' * count
s.ungetc('b' * (count * 5))
assert_equal((count * 5), s.string.size)
assert_match(/\Ab+\z/, 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_ungetbyte_fill
count = 100
s = StringIO.new
s.print 'a' * count
s.ungetbyte('b' * (count * 5))
assert_equal((count * 5), s.string.size)
assert_match(/\Ab+\z/, s.string)
end
def test_frozen
s = StringIO.new
s.freeze
bug = '[ruby-core:33648]'
exception_class = defined?(FrozenError) ? FrozenError : RuntimeError
assert_raise(exception_class, bug) {s.puts("foo")}
assert_raise(exception_class, bug) {s.string = "foo"}
assert_raise(exception_class, 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
return if RbConfig::SIZEOF["void*"] > RbConfig::SIZEOF["long"]
limit = RbConfig::LIMITS["INTPTR_MAX"] - 0x10
assert_separately(%w[-rstringio], "#{<<-"begin;"}\n#{<<-"end;"}")
begin;
limit = #{limit}
ary = []
begin
x = "a"*0x100000
break if [x].pack("p").unpack("i!")[0] < 0
ary << x
end while ary.size <= 100
s = StringIO.new(x)
s.gets("xxx", limit)
assert_equal(0x100000, s.pos)
end;
end
def test_encoding_write
s = StringIO.new("", "w:utf-32be")
s.print "abc"
assert_equal("abc".encode("utf-32be"), s.string)
end
def test_encoding_read
s = StringIO.new("abc".encode("utf-32be"), "r:utf-8")
assert_equal("\0\0\0a\0\0\0b\0\0\0c", s.read)
end
%w/UTF-8 UTF-16BE UTF-16LE UTF-32BE UTF-32LE/.each do |name|
define_method("test_strip_bom:#{name}") do
text = "\uFEFF\u0100a"
content = text.encode(name)
result = StringIO.new(content, mode: 'rb:BOM|UTF-8').read
assert_equal(Encoding.find(name), result.encoding, name)
assert_equal(content[1..-1].b, result.b, name)
StringIO.open(content) {|f|
assert_equal(Encoding.find(name), f.set_encoding_by_bom)
}
end
end
def test_binary_encoding_read_and_default_internal
verbose, $VERBOSE = $VERBOSE, nil
default_internal = Encoding.default_internal
Encoding.default_internal = Encoding::UTF_8
$VERBOSE = verbose
assert_equal Encoding::BINARY, StringIO.new("Hello".b).read.encoding
ensure
$VERBOSE = nil
Encoding.default_internal = default_internal
$VERBOSE = verbose
end
def test_coderange_after_overwrite
s = StringIO.new("".b)
s.write("a=b&c=d")
s.rewind
assert_predicate(s.string, :ascii_only?)
s.write "\u{431 43e 433 443 441}"
assert_not_predicate(s.string, :ascii_only?)
s = StringIO.new("\u{3042}")
s.rewind
assert_not_predicate(s.string, :ascii_only?)
s.write('aaaa')
assert_predicate(s.string, :ascii_only?)
end
def assert_string(content, encoding, str, mesg = nil)
assert_equal([content, encoding], [str, str.encoding], mesg)
end
end