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require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe "IO#pid" do
before :each do
@io = IOSpecs.io_fixture "lines.txt"
end
after :each do
@io.close if @io
end
it "returns nil for IO not associated with a process" do
@io.pid.should == nil
end
end
describe "IO#pid" do
before :each do
@io = IO.popen ruby_cmd('STDIN.read'), "r+"
end
after :each do
@io.close if @io && [email protected]?
end
it "returns the ID of a process associated with stream" do
@io.pid.should_not be_nil
end
it "raises an IOError on closed stream" do
@io.close
-> { @io.pid }.should raise_error(IOError)
end
end
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