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require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes.rb', __FILE__)
describe "IO#pid" do
before :each do
@io = IOSpecs.io_fixture "lines.txt"
end
after :each do
@io.close unless @io.closed?
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_EXE, "r+"
end
after :each do
@io.close unless @io.closed?
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
lambda { @io.pid }.should raise_error(IOError)
end
end
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