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require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe "IO#close_read" do
before :each do
@io = IO.popen 'cat', "r+"
@path = tmp('io.close.txt')
end
after :each do
@io.close unless @io.closed?
rm_r @path
end
it "closes the read end of a duplex I/O stream" do
@io.close_read
-> { @io.read }.should raise_error(IOError)
end
it "does nothing on subsequent invocations" do
@io.close_read
@io.close_read.should be_nil
end
it "allows subsequent invocation of close" do
@io.close_read
-> { @io.close }.should_not raise_error
end
it "raises an IOError if the stream is writable and not duplexed" do
io = File.open @path, 'w'
begin
-> { io.close_read }.should raise_error(IOError)
ensure
io.close unless io.closed?
end
end
it "closes the stream if it is neither writable nor duplexed" do
io_close_path = @path
touch io_close_path
io = File.open io_close_path
io.close_read
io.should.closed?
end
it "does nothing on closed stream" do
@io.close
@io.close_read.should be_nil
end
end
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