Method verifyCacheMetrics

src/tests/fetcher_cache_tests.cpp:260–294

void FetcherCacheTest::verifyCacheMetrics()
{
  JSON::Object metrics = Metrics();

  ASSERT_EQ(
      1u,
      metrics.values.count("containerizer/fetcher/cache_size_total_bytes"));

  // The total size is always given by the corresponding agent flag.
  EXPECT_SOME_EQ(
      flags.fetcher_cache_size.bytes(),
      metrics.at<JSON::Number>("containerizer/fetcher/cache_size_total_bytes"));

  Try<std::list<Path>> files = fetcherProcess->cacheFiles();
  ASSERT_SOME(files);

  Bytes used;

  foreach (const auto& file, files.get()) {
    Try<Bytes> size = os::stat::size(file);
    ASSERT_SOME(size);

    used += size.get();
  }

  ASSERT_EQ(
      1u,
      metrics.values.count("containerizer/fetcher/cache_size_used_bytes"));

  // Verify that the used amount of cache is the total of the size of
  // all the files in the cache.
  EXPECT_SOME_EQ(
      used.bytes(),
      metrics.at<JSON::Number>("containerizer/fetcher/cache_size_used_bytes"));
}


void FetcherCacheTest::TearDown()