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require 'test/unit'
require 'tmpdir'
require 'tempfile'
class TestIO < Test::Unit::TestCase
def mkcdtmpdir
Dir.mktmpdir {|d|
Dir.chdir(d) {
yield
}
}
end
def test_gets_rs
r, w = IO.pipe
w.print "\377xyz"
w.close
assert_equal("\377", r.gets("\377"), "[ruby-dev:24460]")
r.close
end
def test_readpartial_pos
mkcdtmpdir {
open("foo", "w") {|f| f << "abc" }
open("foo") {|f|
f.seek(0)
assert_equal("ab", f.readpartial(2))
assert_equal(2, f.pos)
}
}
end
def make_tempfile
t = Tempfile.new("foo")
t.binmode
t.puts "foo"
t.puts "bar"
t.puts "baz"
t.close
t
end
def test_binmode_after_closed
t = make_tempfile
t.close
assert_raise(IOError) {t.binmode}
end
def test_pos
t = make_tempfile
open(t.path, IO::RDWR|IO::CREAT|IO::TRUNC, 0600) do |f|
f.write "Hello"
assert_equal(5, f.pos)
end
open(t.path, IO::RDWR|IO::CREAT|IO::TRUNC, 0600) do |f|
f.sync = true
f.read
f.write "Hello"
assert_equal(5, f.pos)
end
end
end
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