EXPECT_TRUE(TFE_CancellationManagerDeregisterCallback(c_mgr, token1));
  EXPECT_TRUE(TFE_CancellationManagerTryDeregisterCallback(c_mgr, token3));

  TFE_CancellationManagerStartCancel(c_mgr);
  EXPECT_TRUE(TFE_CancellationManagerIsCancelled(c_mgr));
  EXPECT_TRUE(callback2_invoked);
  TFE_DeleteCancellationManager(c_mgr);
}

TEST(CAPI, ExecutorContextDestructionOrder) {
  TF_Status* status = TF_NewStatus();

  const string malformed_text_proto(R"(cluster {
  job {
    name: "worker")");
  TF_Buffer* null_result =
      TFE_GetServerDef(malformed_text_proto.c_str(), status);
  EXPECT_NE(TF_GetCode(status), TF_OK);
  EXPECT_TRUE(absl::StrContains(TF_Message(status),
                                "Invalid text proto for ServerDef"));
  EXPECT_EQ(null_result, nullptr);

  // Cleanup
  TF_DeleteBuffer(result);
  TF_DeleteStatus(status);
}