// greater than 2).
  for (int i = 1; i <= 10; i++) {
    env->SetNowSeconds(i + 1);
    TF_EXPECT_OK(ReadCache(&cache1, "", 0, 1, &out));
    EXPECT_EQ(calls, 1 + i / 3);
  }
  // Now create a cache with max staleness of 0, and verify that it also works
  // as expected.
  calls = 0;
  env->SetNowSeconds(0);
  tf_gcs_filesystem::RamFileBlockCache cache2(
      8, 16, 0 /* max staleness */, fetcher,