int value = 0;
  EXPECT_TRUE(cache.Lookup("a", &value));
  EXPECT_EQ(value, 1);

  // Delete the entry.
  EXPECT_TRUE(cache.Delete("a"));
  EXPECT_FALSE(cache.Lookup("a", &value));

  // Try deleting the entry again.
  EXPECT_FALSE(cache.Delete("a"));
  EXPECT_FALSE(cache.Lookup("a", &value));
}

}  // namespace

        << dirpath;

    TF_DeleteFile(filepath.c_str(), s);
    ASSERT_TF_OK(s) << "TF_DeleteFile failed for " << filepath << ": "
                    << TF_Message(s);

    // Now deleting the directory should work.
    TF_DeleteDir(dirpath.c_str(), s);
    ASSERT_TF_OK(s) << "TF_DeleteDir failed for " << dirpath << ": "
                    << TF_Message(s);

    TF_DeleteStatus(s);
    break;
  }