Test First Development (TFD) definition
- Test First Development (TFD) is designing tests before satisfying them.
- Test-First Development is an evolutionary approach to programming where agile software developers must first write a test that fails before they write new functional code.
- Test First development is a development style in which you write the unit tests before you write the code to test.
Test-First Development advantages :
- It promotes good design and separation of concerns.
- It improves quality and reduces bugs.
- It causes you to construct a test harness that can be automated.
- It speeds the overall development process.
- It reduces the re-work developers would have to do and gives them the courage to refactor.
Test first Development practice
- Test-first development (TFD) is an approach to development in which developers do not write a single line of code until they have created the test cases needed to prove that unit of work solves the business problem and is technically correct at a unit-test level.
- In a response to a question on Quora, Beck described reading about developers using a test-first approach well before XP and Agile.
- Test-driven development is test-first development combined with design and code refactoring.
- Both test-first and test-driven development are useful for improving quality, morale and trust and even though both are related they not the same.
More informations for Scrum Testing
More informations for the Scrum PSD certification here.