Unit Test Controller Layer

This generates unit tests for Spring REST controllers using MockMvc and standalone setup, keeping your tests isolated from the full application context. You get patterns for all the HTTP methods, JsonPath assertions for response validation, and examples covering the annoying edge cases like validation errors, custom headers, and path variables. It mocks service dependencies with Mockito so you're only testing the controller layer's HTTP handling, not business logic. The validation workflow tip is handy: add andDo(print()) when tests fail to see what MockMvc actually returned. Watch out though, standaloneSetup skips some Spring magic like security annotations, so you might need integration tests for those scenarios anyway.

skills.sh installs: 3.9K
GitHub stars: 369
last updated: Aug 21, 2026

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Install

$ npx -y skills add giuseppe-trisciuoglio/developer-kit --skill unit-test-controller-layer --agent claude-code

Installs into .claude/skills of the current project.

Files

Unit Testing REST Controllers with MockMvc

Overview

Provides patterns for unit testing @RestController and @Controller classes using MockMvc. Covers request/response handling, HTTP status codes, request parameter binding, validation, content negotiation, response headers, and exception handling with mocked service dependencies.

When to Use

Use for: controller tests, API endpoint testing, Spring MVC tests, mock HTTP requests, unit testing web layer endpoints, verifying REST controllers in isolation.