I'm working on my Laravel test suite and I've noticed I'm using foreach loops in several of my tests to iterate through different scenarios or test data.
While this approach seems efficient for testing multiple cases, I'm wondering if it's considered a good practice or if there are better alternatives.
My concerns are: If one assertion fails, does it stop the entire test? Does this make debugging harder when tests fail? Is test readability compromised? What are the recommended approaches for testing multiple scenarios in Laravel? Should I be using data providers, separate test methods, or are foreach loops acceptable in certain contexts? Would appreciate any insights on testing best practices and how experienced developers handle multiple test cases efficiently.
If you are using Pest, the you can use dataset to run the same ttest with different kinds of data.
https://pestphp.com/docs/datasets
In PHPUnit they are called data providers.
https://docs.phpunit.de/en/10.5/writing-tests-for-phpunit.html#data-providers
When using these you can configure it to stop on the first fail or run the suite.
multiple scenarios should mean multiple tests, but you can use fixtures to iterate over different data
If the assertion error message tells you which case fails and why, there's no issue.
@minaremonshaker Yes, it’s an anti-pattern. Use data providers to run the same test case but with different data.
Hi Martin,
https://gist.github.com/mina20088/69647a201b0b17a8f015619b22abf89c
I'm using feature tests, and as you can see in the gist above, I have to create a data provider for every test. I wanted to ask: are data providers compatible with feature tests in the first place? If so, am I implementing them correctly?
Thank you,
I have to create a data provider for every test.
@minaremonshaker Why? You only need to create data providers for test cases where you want to re-run the test with different inputs.
are data providers compatible with feature tests in the first place?
Of course. They’re provided by PHPUnit. So you can use them in PHPUnit-based unit tests, feature tests, or whatever else tests.
I realize this may seem odd, but it's my first time using data providers for testing, so I'm still learning. I now understand I should consolidate all test values and expected results in one method, returning them from a single array for use across my tests.
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