unit-test-caching
Testing Spring Cache annotations without external infrastructure using in-memory cache managers.
- Covers testing
@Cacheable,@CacheEvict, and@CachePutannotations with patterns for verifying cache hits, misses, and invalidation - Uses
ConcurrentMapCacheManagerfor fast, isolated unit tests instead of Redis or other external caches - Includes verification strategies via mock call counts, conditional caching with
unlessandconditionparameters, and custom cache key generation with SpEL expressions - Provides setup examples for Maven and Gradle, plus complete test patterns for cache behavior, eviction, updates, and edge cases like null result handling
Unit Testing Spring Caching
Overview
This skill provides patterns for unit testing Spring caching annotations (@Cacheable, @CacheEvict, @CachePut) without full Spring context. It covers cache hits/misses, invalidation, key generation, and conditional caching using in-memory ConcurrentMapCacheManager.
When to Use
- Writing unit tests for
@Cacheablemethod behavior - Verifying
@CacheEvictcache invalidation works correctly - Testing
@CachePutcache updates - Validating cache key generation from SpEL expressions
- Testing conditional caching with
unless/conditionparameters - Mocking cache managers in fast unit tests without Redis
Instructions
- Configure in-memory CacheManager: Use
ConcurrentMapCacheManagerfor tests - Set up test fixtures: Mock repository and create service instance in
@BeforeEach
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