Adding Unit Tests (Java)

Use this skill when the user requests the creation or update of unit tests in a Java project using JUnit 5, Mockito, and AssertJ. For other languages, use the unit-tests skill.

Instructions

Follow these steps to generate unit tests:

1. Naming Convention: Name the test class {ClassName}Test. Name methods should{Behavior}When{Condition} (camelCase).
2. Structure:
   • Location: src/test/java/ mirroring the source package structure.
   • Use // Given, // When, // Then style comments in test methods.
   • NO OTHER COMMENTS/JAVADOCS: Do not add method-level or class-level Javadocs unless absolutely necessary.
3. Dependencies:
   • Use JUnit 5 (@Test, @ExtendWith(MockitoExtension.class)).
   • Use Mockito for mocking (@Mock, @InjectMocks).
   • Use AssertJ for assertions (assertThat()).
   • Implement WithAssertions interface in the test class to avoid static imports for assertions.
4. Select Pattern: Choose the appropriate testing pattern below based on the verification needs (Basic, Exception, Parameterized, etc.).