Sharing Behaviour
Explore how to optimize your Jasmine unit tests by sharing behavior through forEach loops and helper functions. Understand how to run multiple test scenarios efficiently and improve test readability while maintaining flexibility for complex Angular testing needs.
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Often, we want to test a number of scenarios, and we end up with duplicate test code. If we have more than a few similar tests, then it will often be clearer to use shared behavior to abstract away that repetition. The simple technique is to wrap our test in a forEach loop. This can let us run the same test for a number of different values.
Using a forEach loop
Consider the example below. In the validator.service.spec.ts test suite, on lines 18 and ...