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unit-test-controller-layer

Tests Spring MVC REST controllers with MockMvc and @WebMvcTest validations.

Updated Apr 5, 2026
Search Tags:#controller#unit-testing#spring#mockmvc#junit5#webmvc
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Skill: unit-test-controller-layer
Source: https://github.com/rizaldiem/digital-invitation-web_V2/tree/main/.windsurf/skills/unit-test-controller-layer
Command: npx skills add https://github.com/rizaldiem/digital-invitation-web_V2 --skill unit-test-controller-layer-rizaldiem

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Patterns for isolated unit testing of REST controllers using MockMvc and @WebMvcTest, validating request/response mappings, validation, and exception handling.

Core Features & Use Cases

  • Isolated controller tests by mocking service dependencies to focus on HTTP handling
  • Validate status codes, JSON payloads, and header behavior across GET, POST, PUT, PATCH, DELETE
  • Supports standalone MockMvc setups, comprehensive error and validation scenario coverage

Quick Start

Create a standalone MockMvc test by setting up the controller with MockMvcBuilders.standaloneSetup(controller) and mocking its service dependencies.

Frequently Asked Questions about unit-test-controller-layer

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

FAQPage Schema
How do I unit test Spring MVC controllers in isolation?▼

Unit test Spring MVC controllers in isolation by applying @WebMvcTest and setting up standalone MockMvc with MockMvcBuilders.standaloneSetup, mocking service dependencies to validate HTTP handling independently.

What is the best way to mock service dependencies when testing REST controllers?▼

Mocking service dependencies when testing REST controllers involves using @WebMvcTest to load only the web layer, ensuring you validate request/response mappings and exception handling without starting a full application context.

How do I validate HTTP status codes and JSON payloads in MockMvc tests?▼

Validate HTTP status codes and JSON payloads in MockMvc tests by applying JsonPath-based assertions, allowing you to verify response body content and header behavior across GET, POST, PUT, PATCH, and DELETE operations.

Does @WebMvcTest support testing validation errors and exception handling?▼

@WebMvcTest supports testing validation errors and exception handling by utilizing standalone MockMvc setups to systematically validate comprehensive error scenarios and different HTTP status codes in the web layer.

When should I use standalone MockMvc setup over full application context tests?▼

Use standalone MockMvc setup over full application context tests when you need isolated controller testing, focusing strictly on HTTP interactions and request/response mappings by mocking dependencies rather than loading the entire Spring context.

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