package com.ak;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;

import java.util.Collection;
import java.util.Collections;

import org.junit.Test;
import org.springframework.cache.Cache;
import org.springframework.cache.concurrent.ConcurrentMapCache;
import org.springframework.cache.support.SimpleCacheManager;

public class TestSimpleCacheManager {

    private static final String CACHE_NAME = "this is a cache";
    
    @Test
    public void testGetCacheNames() {
        SimpleCacheManager simpleCacheManager = setUpSimpleCacheManager();
        
        Collection<String> cacheNames = simpleCacheManager.getCacheNames();
        assertEquals(1, cacheNames.size());
        assertTrue(cacheNames.contains(CACHE_NAME));
    }
    
    @Test
    public void testGetCache() {
        SimpleCacheManager simpleCacheManager = setUpSimpleCacheManager();
        
        Cache cache = simpleCacheManager.getCache(CACHE_NAME);
        
        assertNotNull(cache);
    }

    private SimpleCacheManager setUpSimpleCacheManager() {
        Cache cache = new ConcurrentMapCache(CACHE_NAME);
        
        SimpleCacheManager simpleCacheManager = new SimpleCacheManager();
        simpleCacheManager.setCaches(Collections.singleton(cache));
        return simpleCacheManager;
    }
}

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.ak</groupId>
  <artifactId>ak-testing</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <name>ak-testing</name>
  <dependencies>
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-context</artifactId>
          <version>5.1.7.RELEASE</version>
      </dependency>
      <dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
          <version>4.11</version>
          <scope>test</scope>
      </dependency>
  </dependencies>
</project>