# 311 Frameworks Spring Boot Slice Testing

> Use when you need to write slice tests for Spring Boot applications — including @WebMvcTest, @JdbcTest, @JsonTest, @MockBean, test profiles, and @TestConfiguration for focused layer testing. Part of the skills-for-java project

- Skill: `majiayu000/311-frameworks-spring-boot-slice-testing` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds add majiayu000/311-frameworks-spring-boot-slice-testing`
- Raw SKILL.md: https://api.skillmd.com/api/skills/majiayu000/311-frameworks-spring-boot-slice-testing/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- License: Apache-2.0
- Author: majiayu000 (https://skillmd.com/u/majiayu000)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/majiayu000/311-frameworks-spring-boot-slice-testing

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# Spring Boot Slice Testing

Apply Spring Boot slice testing guidelines.

**What is covered in this Skill?**

- @WebMvcTest for web layer
- @JdbcTest for repository layer
- @JsonTest for JSON serialization
- @MockBean for mocking dependencies
- Test profiles
- @TestConfiguration for custom setup

**Scope:** Apply recommendations based on the reference rules and good/bad code examples.

## Constraints

Before applying any test changes, ensure the project compiles. If compilation fails, stop immediately. After applying improvements, run full verification.

- **MANDATORY**: Run `./mvnw compile` or `mvn compile` before applying any change
- **SAFETY**: If compilation fails, stop immediately
- **VERIFY**: Run `./mvnw clean verify` or `mvn clean verify` after applying improvements
- **BEFORE APPLYING**: Read the reference for detailed rules and good/bad patterns

## Reference

For detailed guidance, examples, and constraints, see [references/311-frameworks-spring-boot-slice-testing.md](references/311-frameworks-spring-boot-slice-testing.md).