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chore(fixtures): add rules of thumb for fixture usage

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Simon Knott 2024-11-06 13:46:40 +01:00
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docs/src/test-fixtures-js.md
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@ -122,6 +122,11 @@ Fixtures have a number of advantages over before/after hooks:
- Fixtures are **flexible**. Tests can use any combinations of the fixtures to tailor precise environment they need, without affecting other tests.
- Fixtures simplify **grouping**. You no longer need to wrap tests in `describe`s that set up environment, and are free to group your tests by their meaning instead.
Three good signs that something is better as a fixture than as a helper function or before/after hook are:
1. The after hook performs cleanup, or the helper function returns a cleanup helper.
2. There's dependencies between the helper functions, with some helper functions being commonly reused.
3. The before hook or helper function create an object that is "ready to use", similar to the built-in `page` fixture.
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