Intro TDD Portuguese developers meetup London 16/04/2014
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Test Driven Development (TDD) follows three main laws: only write production code to pass a failing test, only write enough test code to fail, and only write enough production code to pass the test. TDD brings benefits like improved debugging, courage to refactor, documentation, and design. Good unit tests are atomic, isolated, repeatable, revealing, and fast. The structure of a test is to arrange inputs, act on the system under test, and assert the expected outcomes. Strategies for TDD include using obvious implementations, faking dependencies, and triangulating tests. Practicing TDD involves code katas, communities, and conferences.
Intro TDD Portuguese developers meetup London 16/04/2014
- 1. Test Driven Development Aim loosely @pedromsantos
- 3. Red, Green, Refactor The TDD mantra
- 4. Laws You are not allowed to write any production code unless it is to make a failing unit test pass. You are not allowed to write any more of a unit test than is suf鍖cient to fail; and compilation failures are failures. You are not allowed to write any more production code than is suf鍖cient to pass the one failing unit test.
- 5. Bene鍖ts Debugging Courage Documentation Design Professionalism
- 6. Qualities of a Good Unit Test Atomic Isolated Repeatable Revealing Easy to Setup Fast
- 7. Inside a test Arrange all necessary preconditions and inputs Act on the object or method under test Assert that the expected results have occurred Assert First?
- 8. Strategies Use Obvious Implementation Fake it Triangulate
- 9. Practice Code Kata Community London Software Craftsmanship Community
- 10. Demo
- 11. SoCraTes UK 2014 International Software Craftsmanship gathering 12th 15th June, Farncombe Estate ! http://socratesuk.org/
- 14. References http://www.meetup.com/london-software- craftsmanship/ http://codingdojo.org/cgi-bin/index.pl? KataCatalogue http://cyber-dojo.org/ http://programmer.97things.oreilly.com/wiki/ index.php/The_Three_Laws_of_Test- Driven_Development