Test Doubles
- PHP-Mock: for mocking built-in php functions – includes libraries for integrating with PHPUnit, Mockery and Prophecy.
- 5 Types of Test Doubles
PHPUnit
- How to clean up memory being used by PHPUnit (fixes PHPUnit running out of memory)
General TDD
- jbrains.ca online training – Paid courses from one of the smartest people I’ve ever heard talk about TDD.