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java-testing

Configure Java Spring Boot tests with JUnit 5, Testcontainers, and Playwright.

Updated Apr 16, 2026
Search Tags:#testing#java#unit-testing#integration-testing#e2e-testing#spring-boot#testcontainers
One-click install
npx skills add https://github.com/tassosgomes/poc-iam-service --skill java-testing-tassosgomes
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: java-testing
Source: https://github.com/tassosgomes/poc-iam-service/tree/main/.github/skills/java/java-testing
Command: npx skills add https://github.com/tassosgomes/poc-iam-service --skill java-testing-tassosgomes

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Este conjunto de estratégias de teste define padrões robustos para Java Spring Boot, cobrindo testes unitários, de integração e End-to-End, com foco em confiabilidade, repetibilidade e cobertura de lógica de negócio.

Core Features & Use Cases

  • Testes unitários com JUnit 5 + AssertJ + Mockito seguindo o padrão AAA (Arrange-Act-Assert).
  • Testes de integração com Spring Boot Test + Testcontainers (PostgreSQL) para ambiente isolado e determinístico.
  • Testes E2E com Playwright, incluindo cenários de UX e fluxos críticos.
  • Dev Containers para ambientes de desenvolvimento isolados e consistentes, com convenções de nomenclatura de testes e fixtures reutilizáveis.
  • Cobertura de código > 70% para lógica de negócio e verificação de regras de negócio.

Quick Start

Configure seu projeto para incluir JUnit 5, AssertJ, Mockito, Spring Boot Test, Testcontainers e Playwright, depois implemente testes unitários, de integração e E2E usando o padrão AAA e a convenção de nomes methodName_Condition_ExpectedBehavior para alcançar cobertura superior a 70%.

Frequently Asked Questions about java-testing

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

FAQPage Schema
How do I set up deterministic integration tests in Spring Boot using Testcontainers?▼

You can achieve deterministic integration tests by combining Spring Boot Test with Testcontainers to provision isolated PostgreSQL instances. This setup guarantees reliable, repeatable test execution across different environments.

What is the best way to structure unit tests in Java to ensure high business logic coverage?▼

The best way to structure Java unit tests is using JUnit 5, AssertJ, and Mockito while following the AAA pattern. Adopting the methodName_Condition_ExpectedBehavior naming convention helps target and verify over 70% business logic coverage.

Can I use Playwright for end-to-end testing in a Java Spring Boot application?▼

Yes, Playwright supports end-to-end testing for Java Spring Boot applications. It drives E2E flows to validate critical user experience scenarios, ensuring the entire service stack functions correctly.

Does Spring Boot testing work with Dev Containers for consistent development environments?▼

Spring Boot testing integrates with Dev Containers to provide consistent, isolated development environments. This setup ensures that unit, integration, and E2E tests execute uniformly across your team's local configurations.

Why should I minimize mocks when writing Java integration tests?▼

Minimizing mocks in Java integration tests ensures you validate actual component interactions and real database behavior. Using Testcontainers instead of mocks provides deterministic results while maintaining high confidence in business logic.

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