Mocking PHP functions in unit tests

Question

I\'m unit-testing some PHP code with SimpleTest and I\'ve run into trouble. In my tests of a database class I want to be able to set an expectation for PHPs mysql f

Answer 1

Not in an automated way. What you can do, is to write your code in a way such that external dependencies are wrapped in objects that are passed in from the outside. In your production environment you'll just wire up the real adapters, but during testing, you can wire it to stubs or mocks.

If you really insist, you can use the runkit extension which changes php's programming model so that you can redefine classes and functions at runtime. This is an external and nonstandard extensions however, so keept that in mind. The defacto standard is a manual approach as I described above.