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ruby--ruby/test/ruby/test_io.rb

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require 'test/unit'
require 'tmpdir'
require 'io/nonblock'
require 'socket'
require 'stringio'
class TestIO < Test::Unit::TestCase
def test_gets_rs
# default_rs
r, w = IO.pipe
w.print "aaa\nbbb\n"
w.close
assert_equal "aaa\n", r.gets
assert_equal "bbb\n", r.gets
assert_nil r.gets
r.close
# nil
r, w = IO.pipe
w.print "a\n\nb\n\n"
w.close
assert_equal "a\n\nb\n\n", r.gets(nil)
assert_nil r.gets("")
r.close
# "\377"
r, w = IO.pipe('ascii-8bit')
w.print "\377xyz"
w.close
r.binmode
assert_equal("\377", r.gets("\377"), "[ruby-dev:24460]")
r.close
# ""
r, w = IO.pipe
w.print "a\n\nb\n\n"
w.close
assert_equal "a\n\n", r.gets(""), "[ruby-core:03771]"
assert_equal "b\n\n", r.gets("")
assert_nil r.gets("")
r.close
end
# This test cause SEGV.
def test_ungetc
r, w = IO.pipe
w.close
assert_raise(IOError, "[ruby-dev:31650]") { 20000.times { r.ungetc "a" } }
ensure
r.close
end
def test_each_byte
r, w = IO.pipe
w << "abc def"
w.close
r.each_byte {|byte| break if byte == 32 }
assert_equal("def", r.read, "[ruby-dev:31659]")
ensure
r.close
end
def test_rubydev33072
assert_raise(Errno::ENOENT, "[ruby-dev:33072]") do
File.read("empty", nil, nil, {})
end
end
def with_pipe
r, w = IO.pipe
begin
yield r, w
ensure
r.close unless r.closed?
w.close unless w.closed?
end
end
def with_read_pipe(content)
r, w = IO.pipe
w << content
w.close
begin
yield r
ensure
r.close
end
end
def mkcdtmpdir
Dir.mktmpdir {|d|
Dir.chdir(d) {
yield
}
}
end
def test_copy_stream
mkcdtmpdir {|d|
content = "foobar"
File.open("src", "w") {|f| f << content }
ret = IO.copy_stream("src", "dst")
assert_equal(content.bytesize, ret)
assert_equal(content, File.read("dst"))
# overwrite by smaller file.
content = "baz"
File.open("src", "w") {|f| f << content }
ret = IO.copy_stream("src", "dst")
assert_equal(content.bytesize, ret)
assert_equal(content, File.read("dst"))
ret = IO.copy_stream("src", "dst", 2)
assert_equal(2, ret)
assert_equal(content[0,2], File.read("dst"))
ret = IO.copy_stream("src", "dst", 0)
assert_equal(0, ret)
assert_equal("", File.read("dst"))
ret = IO.copy_stream("src", "dst", nil, 1)
assert_equal(content.bytesize-1, ret)
assert_equal(content[1..-1], File.read("dst"))
assert_raise(Errno::ENOENT) {
IO.copy_stream("nodir/foo", "dst")
}
assert_raise(Errno::ENOENT) {
IO.copy_stream("src", "nodir/bar")
}
with_pipe {|r, w|
ret = IO.copy_stream("src", w)
assert_equal(content.bytesize, ret)
w.close
assert_equal(content, r.read)
}
with_pipe {|r, w|
w.close
assert_raise(IOError) { IO.copy_stream("src", w) }
}
pipe_content = "abc"
with_read_pipe(pipe_content) {|r|
ret = IO.copy_stream(r, "dst")
assert_equal(pipe_content.bytesize, ret)
assert_equal(pipe_content, File.read("dst"))
}
with_read_pipe("abc") {|r1|
assert_equal("a", r1.getc)
with_pipe {|r2, w2|
w2.sync = false
w2 << "def"
ret = IO.copy_stream(r1, w2)
assert_equal(2, ret)
w2.close
assert_equal("defbc", r2.read)
}
}
with_read_pipe("abc") {|r1|
assert_equal("a", r1.getc)
with_pipe {|r2, w2|
w2.sync = false
w2 << "def"
ret = IO.copy_stream(r1, w2, 1)
assert_equal(1, ret)
w2.close
assert_equal("defb", r2.read)
}
}
with_read_pipe("abc") {|r1|
assert_equal("a", r1.getc)
with_pipe {|r2, w2|
ret = IO.copy_stream(r1, w2)
assert_equal(2, ret)
w2.close
assert_equal("bc", r2.read)
}
}
with_read_pipe("abc") {|r1|
assert_equal("a", r1.getc)
with_pipe {|r2, w2|
ret = IO.copy_stream(r1, w2, 1)
assert_equal(1, ret)
w2.close
assert_equal("b", r2.read)
}
}
with_read_pipe("abc") {|r1|
assert_equal("a", r1.getc)
with_pipe {|r2, w2|
ret = IO.copy_stream(r1, w2, 0)
assert_equal(0, ret)
w2.close
assert_equal("", r2.read)
}
}
with_pipe {|r1, w1|
w1 << "abc"
assert_equal("a", r1.getc)
with_pipe {|r2, w2|
w1 << "def"
w1.close
ret = IO.copy_stream(r1, w2)
assert_equal(5, ret)
w2.close
assert_equal("bcdef", r2.read)
}
}
with_pipe {|r, w|
ret = IO.copy_stream("src", w, 1, 1)
assert_equal(1, ret)
w.close
assert_equal(content[1,1], r.read)
}
with_read_pipe("abc") {|r1|
assert_equal("a", r1.getc)
with_pipe {|r2, w2|
w2.nonblock = true
s = w2.syswrite("a" * 100000)
t = Thread.new { sleep 0.1; r2.read }
ret = IO.copy_stream(r1, w2)
w2.close
assert_equal(2, ret)
assert_equal("a" * s + "bc", t.value)
}
}
bigcontent = "abc" * 123456
File.open("bigsrc", "w") {|f| f << bigcontent }
ret = IO.copy_stream("bigsrc", "bigdst")
assert_equal(bigcontent.bytesize, ret)
assert_equal(bigcontent, File.read("bigdst"))
File.unlink("bigdst")
ret = IO.copy_stream("bigsrc", "bigdst", nil, 100)
assert_equal(bigcontent.bytesize-100, ret)
assert_equal(bigcontent[100..-1], File.read("bigdst"))
File.unlink("bigdst")
ret = IO.copy_stream("bigsrc", "bigdst", 30000, 100)
assert_equal(30000, ret)
assert_equal(bigcontent[100, 30000], File.read("bigdst"))
File.open("bigsrc") {|f|
assert_equal(0, f.pos)
ret = IO.copy_stream(f, "bigdst", nil, 10)
assert_equal(bigcontent.bytesize-10, ret)
assert_equal(bigcontent[10..-1], File.read("bigdst"))
assert_equal(0, f.pos)
ret = IO.copy_stream(f, "bigdst", 40, 30)
assert_equal(40, ret)
assert_equal(bigcontent[30, 40], File.read("bigdst"))
assert_equal(0, f.pos)
}
with_pipe {|r, w|
w.close
assert_raise(IOError) { IO.copy_stream("src", w) }
}
megacontent = "abc" * 1234567
File.open("megasrc", "w") {|f| f << megacontent }
with_pipe {|r1, w1|
with_pipe {|r2, w2|
t1 = Thread.new { w1 << megacontent; w1.close }
t2 = Thread.new { r2.read }
r1.nonblock = true
w2.nonblock = true
ret = IO.copy_stream(r1, w2)
assert_equal(megacontent.bytesize, ret)
w2.close
t1.join
assert_equal(megacontent, t2.value)
}
}
with_pipe {|r1, w1|
with_pipe {|r2, w2|
t1 = Thread.new { w1 << megacontent; w1.close }
t2 = Thread.new { r2.read }
ret = IO.copy_stream(r1, w2)
assert_equal(megacontent.bytesize, ret)
w2.close
t1.join
assert_equal(megacontent, t2.value)
}
}
with_pipe {|r, w|
t = Thread.new { r.read }
ret = IO.copy_stream("megasrc", w)
assert_equal(megacontent.bytesize, ret)
w.close
assert_equal(megacontent, t.value)
}
}
end
def test_copy_stream_rbuf
mkcdtmpdir {|d|
with_pipe {|r, w|
File.open("foo", "w") {|f| f << "abcd" }
File.open("foo") {|f|
f.read(1)
assert_equal(3, IO.copy_stream(f, w, 10, 1))
}
w.close
assert_equal("bcd", r.read)
}
}
end
def with_socketpair
s1, s2 = UNIXSocket.pair
begin
yield s1, s2
ensure
s1.close unless s1.closed?
s2.close unless s2.closed?
end
end
def test_copy_stream_socket
return unless defined? UNIXSocket
mkcdtmpdir {|d|
content = "foobar"
File.open("src", "w") {|f| f << content }
with_socketpair {|s1, s2|
ret = IO.copy_stream("src", s1)
assert_equal(content.bytesize, ret)
s1.close
assert_equal(content, s2.read)
}
bigcontent = "abc" * 123456
File.open("bigsrc", "w") {|f| f << bigcontent }
with_socketpair {|s1, s2|
t = Thread.new { s2.read }
ret = IO.copy_stream("bigsrc", s1)
assert_equal(bigcontent.bytesize, ret)
s1.close
result = t.value
assert_equal(bigcontent, result)
}
with_socketpair {|s1, s2|
t = Thread.new { s2.read }
ret = IO.copy_stream("bigsrc", s1, 10000)
assert_equal(10000, ret)
s1.close
result = t.value
assert_equal(bigcontent[0,10000], result)
}
File.open("bigsrc") {|f|
assert_equal(0, f.pos)
with_socketpair {|s1, s2|
t = Thread.new { s2.read }
ret = IO.copy_stream(f, s1, nil, 100)
assert_equal(bigcontent.bytesize-100, ret)
assert_equal(0, f.pos)
s1.close
result = t.value
assert_equal(bigcontent[100..-1], result)
}
}
File.open("bigsrc") {|f|
assert_equal(bigcontent[0,100], f.read(100))
assert_equal(100, f.pos)
with_socketpair {|s1, s2|
t = Thread.new { s2.read }
ret = IO.copy_stream(f, s1)
assert_equal(bigcontent.bytesize-100, ret)
assert_equal(bigcontent.length, f.pos)
s1.close
result = t.value
assert_equal(bigcontent[100..-1], result)
}
}
megacontent = "abc" * 1234567
File.open("megasrc", "w") {|f| f << megacontent }
with_socketpair {|s1, s2|
t = Thread.new { s2.read }
s1.nonblock = true
ret = IO.copy_stream("megasrc", s1)
assert_equal(megacontent.bytesize, ret)
s1.close
result = t.value
assert_equal(megacontent, result)
}
}
end
def test_copy_stream_strio
src = StringIO.new("abcd")
dst = StringIO.new
ret = IO.copy_stream(src, dst)
assert_equal(4, ret)
assert_equal("abcd", dst.string)
assert_equal(4, src.pos)
end
def test_copy_stream_strio_len
src = StringIO.new("abcd")
dst = StringIO.new
ret = IO.copy_stream(src, dst, 3)
assert_equal(3, ret)
assert_equal("abc", dst.string)
assert_equal(3, src.pos)
end
def test_copy_stream_strio_off
src = StringIO.new("abcd")
with_pipe {|r, w|
assert_raise(ArgumentError) {
IO.copy_stream(src, w, 3, 1)
}
}
end
def test_copy_stream_fname_to_strio
mkcdtmpdir {|d|
File.open("foo", "w") {|f| f << "abcd" }
src = "foo"
dst = StringIO.new
ret = IO.copy_stream(src, dst, 3)
assert_equal(3, ret)
assert_equal("abc", dst.string)
}
end
def test_copy_stream_strio_to_fname
mkcdtmpdir {|d|
# StringIO to filename
src = StringIO.new("abcd")
ret = IO.copy_stream(src, "fooo", 3)
assert_equal(3, ret)
assert_equal("abc", File.read("fooo"))
assert_equal(3, src.pos)
}
end
def test_copy_stream_io_to_strio
mkcdtmpdir {|d|
# IO to StringIO
File.open("bar", "w") {|f| f << "abcd" }
File.open("bar") {|src|
dst = StringIO.new
ret = IO.copy_stream(src, dst, 3)
assert_equal(3, ret)
assert_equal("abc", dst.string)
assert_equal(3, src.pos)
}
}
end
def test_copy_stream_strio_to_io
mkcdtmpdir {|d|
# StringIO to IO
src = StringIO.new("abcd")
ret = File.open("baz", "w") {|dst|
IO.copy_stream(src, dst, 3)
}
assert_equal(3, ret)
assert_equal("abc", File.read("baz"))
assert_equal(3, src.pos)
}
end
def test_copy_stream_strio_flush
with_pipe {|r, w|
w.sync = false
w.write "zz"
src = StringIO.new("abcd")
IO.copy_stream(src, w)
t = Thread.new {
w.close
}
assert_equal("zzabcd", r.read)
t.join
}
end
def test_copy_stream_strio_rbuf
with_pipe {|r, w|
w << "abcd"
w.close
assert_equal("a", r.read(1))
sio = StringIO.new
IO.copy_stream(r, sio)
assert_equal("bcd", sio.string)
}
end
end