java-test

Guide test-first Java development by writing focused JUnit 5 tests before production code.

Updated Apr 9, 2026
One-click install
npx skills add https://github.com/ririnto/sinon --skill java-test
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: java-test
Source: https://github.com/ririnto/sinon/tree/main/plugins/java/skills/java-test
Command: npx skills add https://github.com/ririnto/sinon --skill java-test

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill helps Java developers adopt test-first workflows by guiding the creation of focused JUnit 5 tests before production code, following the TDD red-green-refactor cycle.

Core Features & Use Cases

  • Write the smallest failing JUnit 5 test that captures the requested behavior.
  • Choose the correct test scope (unit, integration, or contract) and keep tests focused.
  • Configure Maven Surefire or Gradle test execution and keep build-tool wiring separate from test logic.
  • Apply Mockito for isolated boundaries and Awaitility for asynchronous behavior when appropriate.
  • Follow conventions for test naming, nested contexts, and maintainable test structure.

Quick Start

Start by writing the smallest failing JUnit 5 test that captures the requested behavior, then implement the production code and wire the build tool.

Frequently Asked Questions about java-test

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I start test-first Java development using JUnit 5?

Test-first Java development begins by writing the smallest failing JUnit 5 test that captures the requested behavior, then implementing production code and wiring the build tool to execute the test.

When should I use Mockito vs Awaitility in Java testing?

Use Mockito in Java testing for isolated boundaries and Awaitility for asynchronous behavior, applying each library when the specific test scope requires mocking dependencies or verifying time-based outcomes.

How do I configure Maven Surefire or Gradle for test-driven development?

Configure Maven Surefire or Gradle test execution by separating build-tool wiring from test logic, keeping build configuration distinct from the JUnit 5 test structure and procedural test-driven workflows.

What's the best way to structure JUnit tests for maintainable TDD workflows?

Structure JUnit tests for maintainable TDD workflows by following conventions for test naming, using nested contexts, and keeping tests focused on the correct scope whether unit, integration, or contract testing.

Does this test-driven development approach work for integration and contract testing in Java?

Yes, this test-driven development approach applies to unit, integration, and contract testing in Java projects, prescribing when to write the smallest failing test and how to choose the correct test scope.

Why should I separate build-tool wiring from test logic in Java projects?

Separating build-tool wiring from test logic in Java projects ensures procedural rules and tooling guidance for test-driven workflows remain clean, preventing configuration concerns from mixing with focused JUnit test structure.