unit-testing-patterns
Unit Testing Patterns Skill
Purpose
Write effective, maintainable unit tests using JUnit 5, Mockito, and AssertJ that achieve 80%+ code coverage.
When to Use
- ✅ Testing business logic in services
- ✅ Testing data validation
- ✅ Testing utility functions
- ✅ Test-driven development (TDD)
JUnit 5 Patterns
Test Structure (AAA Pattern)
@ExtendWith(MockitoExtension.class)
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