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unit-test-service-layer - Unit Testing Service Layer with Mockito

Unit test service layer classes by mocking dependencies to validate business logic without external services.

Tags

Updated: 2026-09-21
junit-5mockitounit-testingservice-layerbusiness-logictesting

Capabilities

Mock service dependenciesVerify collaborator interactionsTest exception handlingCapture method arguments

Typical Inputs

Service class source codeDependency class interfaces

Typical Outputs

Unit test casesTest verification results

What this skill does

  • Mock service dependencies
  • Verify collaborator interactions
  • Test exception handling
  • Capture method arguments
  • Verify call execution order
  • Test async service methods

Inputs

  • Service class source code
  • Dependency class interfaces

Outputs

  • Unit test cases
  • Test verification results

Requirements

  • JUnit 5 framework
  • Mockito framework
  • AssertJ library
  • Java build system (Maven or Gradle)

Source

  • Spec: SKILL.md

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