Lightning fast tests
summary
Shows how a Mastermind game is built with TDD to keep test runs in seconds: unit tests cover domain logic, only adapters get integration tests, and the heavy parts are swapped for in‑memory versions. Uses PHP 5.6/7, PHPUnit and Prophecy mocking for fast doubles, introduces a decoding boards repository interface and a session adapter that is the single place touching Symfony session. The design reduces end‑to‑end tests and keeps the suite fast and reliable.
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chapters (10)
- 0:00Introduction
- 3:20Workshop setup
- 9:37Mastermind game design
- 14:16Code Peg class exercise
- 19:12Stubbing and test doubles
- 31:55Dependency inversion principle
- 45:08Dependency injection vs inversion
- 53:50Final exercise
- 56:05Test pyramid and architecture
- 1:02:53Q&A and closing
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