test for pmap

pmap_spec.rb

describe Array do
  describe '#pmap' do
      context "without timeout" do
        it "should not raise error" do
          expect {
            [].pmap{|x| x}
          }.not_to raise_error
        end

        it "should return proper values" do
          [1,2,3].pmap{|x| x+1}.should == [2,3,4]
        end
      end

      context "with timeout" do
        it "should not raise error" do
          expect {
            [].pmap(1){|x| x}
          }.not_to raise_error
        end

        it "should not set timeout if timeout is nil" do
          [1,2,3].pmap(nil){|x| sleep(0.1); x+1}.should == [2,3,4]
        end

        it "should return proper values" do
          [1,2,3].pmap(1){|x| x+1}.should == [2,3,4]
        end

        it "should return proper values if it was faster then timeout " do
          [1,2,3].pmap(0.2){|x| sleep(0.1); x+1}.should == [2,3,4]
        end

        it "should return nil for timeout elements" do
          [1,2,3].pmap(0.1){|x| sleep(1); x+1}.should be_empty
        end

        it "should return value of non timeouted elements" do
          [1,2,3].pmap(0.1){|x| sleep(1) if x == 2; x+1}.should == [2, 4]
        end
      end
  end
end