Java Testing

Handles the full spectrum of Java testing from JUnit 5 unit tests to Testcontainers integration tests. You get Mockito mocking patterns, AssertJ assertions, Spring Boot test slices, and MockMvc for API testing. The examples are solid and cover the BDD style (given/when/then) which keeps tests readable. Includes parameterized tests, test builders for cleaner setup, and JaCoCo coverage configs targeting 80%. The troubleshooting guide actually addresses real problems like flaky tests from shared state and mock initialization failures. Works with both JUnit 5 and TestNG, though the examples lean heavily on JUnit. Good for greenfield test suites or modernizing older JUnit 4 codebases.

Install to Claude Code

npx -y skills add pluginagentmarketplace/custom-plugin-java --skill java-testing --agent claude-code