Cache::Value cache_value = cache->LookupOrCreate(key);
  EXPECT_EQ(cache_value.request_count, 1);

  cache_value = cache->LookupOrCreate(key);
  EXPECT_EQ(cache_value.request_count, 2);

  cache_value = cache->LookupOrCreate(key);
  EXPECT_EQ(cache_value.request_count, 3);
}

TEST(DeviceCompilationCacheTest, RequestCountUnchangedOnStore) {
  auto cache = std::make_unique<Cache>();

apiVersion: telemetry.istio.io/v1alpha1
kind: Telemetry
metadata:
  name: ns-default
spec:
  metrics:
  - providers:
    - name: prometheus
    overrides:
    - match:
        metric: REQUEST_COUNT
      tagOverrides:
        response_code:
          value: "istio_responseClass"
        request_operation: 
          value: istio_operationId
        grpc_response_status: 

					// Next, get all matches.
					// This is a bit funky because the matches are oneof of ENUM and customer metric. We normalize
					// these to strings, so we may end up with a list like [REQUEST_COUNT, my-customer-metric].
					// TODO: we always flatten ALL_METRICS into each metric mode. For some stats providers (prometheus),
					// we are able to apply overrides to all metrics directly rather than duplicating the config.

                                  Valid Options: ALL_METRICS, REQUEST_COUNT, REQUEST_DURATION, REQUEST_SIZE, RESPONSE_SIZE, TCP_OPENED_CONNECTIONS, TCP_CLOSED_CONNECTIONS, TCP_SENT_BYTES, TCP_RECEIVED_BYTES, GRPC_REQUEST_MESSAGES, GRPC_RESPONSE_MESSAGES
                                enum:
                                - ALL_METRICS
                                - REQUEST_COUNT
                                - REQUEST_DURATION

                                  Valid Options: ALL_METRICS, REQUEST_COUNT, REQUEST_DURATION, REQUEST_SIZE, RESPONSE_SIZE, TCP_OPENED_CONNECTIONS, TCP_CLOSED_CONNECTIONS, TCP_SENT_BYTES, TCP_RECEIVED_BYTES, GRPC_REQUEST_MESSAGES, GRPC_RESPONSE_MESSAGES
                                enum:
                                - ALL_METRICS
                                - REQUEST_COUNT
                                - REQUEST_DURATION