How to mock PHP's own methods using PHPUnit

Question

I want to add test coverage to a method inside a PHP class which invokes a PHP-built-in method. To be able to mock copy(), I had to create a wrapper class. Is there a better way to mock PHP's built-in methods? By "better", I mean that I do not want to introduce a wrapper class just for the sake of the unit testing.

I've checked these docs but could not find an answer.

I use PHP and PHPUnit only for a side project, therefore I might overlook something obvious?

Philip Weinke · Accepted Answer · 2020-12-22 06:12:12Z

1

To verify filesystem operations in a unit test I usually rely on vfsStream. It's a virtual filesystem wrapper that allows you to test all operations on an in-memory filesystem.

If you just want to mock a built-in function, there's php-mock.

answered Dec 22, 2020 at 6:12

Philip Weinke

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