Chapter 07: Writing Test Code: Difference between revisions
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/ Unit Tests \ | / Unit Tests \ | ||
/______________________\</pre> | /______________________\</pre> | ||
'''Unit Tests (70%)''': | '''Unit Tests (70%)''': | ||
* Fast execution (< 1 second) | |||
* Test individual components in isolation | |||
* Use mocking for dependencies - Focus on business logic | |||
'''Integration Tests (20%)''': | '''Integration Tests (20%)''': | ||
* Test component interactions | |||
* Include database, web layer, or external services | |||
* Slower execution but higher confidence | |||
* Test real scenarios | |||
'''UI/End-to-End Tests (10%)''': | '''UI/End-to-End Tests (10%)''': | ||
* Test complete user journeys | |||
* Slowest but most comprehensive | |||
* Usually automated browser testing | |||
<span id="testing-philosophy"></span> | <span id="testing-philosophy"></span> | ||
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=== 7.2.3 When to Use Each Type === | === 7.2.3 When to Use Each Type === | ||
'''Use Unit Tests When:''' | '''Use Unit Tests When:''' | ||
* Testing business logic in isolation | |||
* Validating edge cases and error conditions | |||
* Testing pure functions or methods with clear inputs/outputs | |||
* Need fast feedback during development | |||
'''Use Integration Tests When:''' | '''Use Integration Tests When:''' | ||
* Testing database interactions | |||
* Validating component interactions | |||
* Testing configuration and wiring | |||
* Verifying end-to-end scenarios | |||
<span id="test-code-patterns-and-quality"></span> | <span id="test-code-patterns-and-quality"></span> | ||
== 7.3 Test Code Patterns and Quality == | == 7.3 Test Code Patterns and Quality == | ||