internal static ICache CreateCache(
            ILogger logger, ICache innerCache, string redisNamespace, string testClassName, ReadThroughMode readThroughMode)
        {
            var redisDb = RedisDatabases.GetOrAdd(redisNamespace, _ => new MockRedisDatabase(SystemClock.Instance));

            RedisConnectionMultiplexer.TestConnectionMultiplexer = MockRedisDatabaseFactory.CreateConnection(redisDb);
            var tracer        = new DistributedCacheSessionTracer(TestGlobal.Logger, testClassName);
            var metadataCache = new RedisMetadataCache(
                new EnvironmentConnectionStringProvider(string.Empty), new RedisSerializer(), redisNamespace, tracer);

            return(new DistributedCache(logger, innerCache, metadataCache, tracer, readThroughMode));
        }
        private async Task RunTest(MockRedisDatabase redisDb, Func <Context, IMetadataCache, MockRedisDatabase, Task> test)
        {
            var context = new Context(TestGlobal.Logger);

            RedisConnectionMultiplexer.TestConnectionMultiplexer = MockRedisDatabaseFactory.CreateConnection(redisDb);
            var tracer        = new DistributedCacheSessionTracer(TestGlobal.Logger, nameof(MemoryMetadataCacheTests));
            var metadataCache = new RedisMetadataCache(new EnvironmentConnectionStringProvider(string.Empty), new RedisSerializer(), RedisNameSpace, tracer);
            await metadataCache.StartupAsync(context).ShouldBeSuccess();

            await test(context, metadataCache, redisDb);

            await metadataCache.ShutdownAsync(context).ShouldBeSuccess();
        }