unit-testing-patterns

Write JUnit 5 unit tests with Mockito and AssertJ for CIA platform services.

235|56|Updated Aug 1, 2015
One-click install
npx skills add https://github.com/Hack23/cia --skill unit-testing-patterns
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: unit-testing-patterns
Source: https://github.com/Hack23/cia/tree/main/.github/skills/unit-testing-patterns
Command: npx skills add https://github.com/Hack23/cia --skill unit-testing-patterns

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill provides a structured approach to writing high-quality unit tests for the CIA platform using JUnit 5, Mockito, and AssertJ, ensuring tests are readable, deterministic, and maintainable while targeting 80%+ code coverage.

Core Features & Use Cases

  • AAA Test Structure: Arrange, Act, and Assert patterns to keep tests clear and predictable.
  • Mocking & Verification: Effective use of Mockito to isolate units and verify interactions.
  • Fluent Assertions: Using AssertJ for expressive, readable test assertions.
  • Coverage Goals: Guidance and examples aimed at achieving 80%+ line coverage and 70% branch coverage.
  • Use Case: Apply these patterns to service layer validation, data validation, and utility routines across the CIA codebase.

Quick Start

Use the unit-testing-patterns skill to scaffold a PoliticianServiceTest with Mockito mocks and AssertJ assertions, following the AAA structure.

Frequently Asked Questions about unit-testing-patterns

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

FAQPage Schema
How do I structure unit tests with JUnit 5, Mockito, and AssertJ?

Structure unit tests using the Arrange, Act, and Assert (AAA) pattern with JUnit 5, Mockito for mocking, and AssertJ for fluent assertions to ensure readable, deterministic, and maintainable test suites.

What is the best way to achieve 80% code coverage for service layer validation?

Achieve 80% code coverage and 70% branch coverage by applying consistent unit testing patterns to service layer validation, data validation, and utility routines, ensuring deterministic test structure and rapid feedback.

How do I isolate units and verify interactions using Mockito?

Isolate units and verify interactions by using Mockito to mock dependencies within your service layer tests, enabling repeatable patterns and deterministic validation of your CIA platform services.

Does this unit testing approach work for utility routines across the codebase?

Yes, this approach applies to utility routines across the codebase by implementing consistent, high-coverage unit tests using JUnit 5, Mockito, and AssertJ for rapid feedback and maintainable test suites.

Why use AssertJ for fluent assertions in unit tests?

Use AssertJ for fluent assertions to write expressive and readable test assertions, which helps maintain deterministic test structure and achieve high code coverage goals in your test suites.

Can I scaffold a PoliticianServiceTest following the AAA test structure?

Yes, you can scaffold a PoliticianServiceTest with Mockito mocks and AssertJ assertions by following the Arrange, Act, and Assert structure to validate service layer logic rapidly.