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describe :queue_close, shared: true do
it "closes the queue and returns nil for further #pop" do
q = @object.call
q << 1
q.close
q.pop.should == 1
q.pop.should == nil
q.pop.should == nil
end
it "prevents further #push" do
q = @object.call
q.close
lambda {
q << 1
}.should raise_error(ClosedQueueError)
end
it "may be called multiple times" do
q = @object.call
q.close
q.closed?.should be_true
q.close # no effect
q.closed?.should be_true
end
end
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