Acceptance Test-Driven Development

Giorgio Sironi writes an interesting TDD story; I am halfway through reading Growing object-oriented software, guided by tests, a book that teaches Test-Driven Development in a Java environment. A review will come soon, since the process described in this work is really language-agnostic and interesting also for php developers.

However, the book’s authors introduce a very productive practice, which consists in a double cycle of TDD:

* a longer cycle, where you write acceptance (aka end-to-end) tests, deriving them from the user stories or formal requirements, and make them pass;

* a shorter cycle contained in the first, which happens in the phase when an acceptance test is red: you write unit tests and make them pass until the related acceptance test does not fail anymore.

Read complete story @ PHP Zone.

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