.. _tutorial-scenario-outlines: scenario outlines ================= On our :ref:`first description file`, `zero.feature`, all scenarios were similar. This made us repeat most of the text again and again. **Isn't there a better way to deal with this - when several scenarios are almost equal and only some values change?** Yes, there is! :) You just need to use scenarios outlines. An example is shown bellow: .. highlight:: ruby :: Feature: Compute factorial In order to play with Lettuce As beginners We'll implement factorial Scenario Outline: Factorials [0-4] Given I have the number When I compute its factorial Then I see the number Examples: | number | result | | 0 | 1 | | 1 | 1 | | 2 | 2 | | 3 | 6 | | 4 | 24 | This way, you will only need to provide the values that really change, reducing "copy & paste" work and making your tests more clear. .. Note:: If you overwrite zero.feature using the example above, and goto step [e], you'll see your description expanding to the five previous scenarious: .. image:: ./screenshot7.png .. _Lettuce: http://lettuce.it .. _Python: http://python.org .. _Cucumber: http://cukes.info .. _Ruby: http://ruby-lang.org/ .. _BDD: http://en.wikipedia.org/wiki/Behavior_Driven_Development