/* Copyright 2015 The TensorFlow Authors. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==============================================================================*/
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#include <atomic>
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#include "tensorflow/core/util/reffed_status_callback.h"
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#include "tensorflow/core/lib/core/errors.h"
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#include "tensorflow/core/lib/core/notification.h"
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#include "tensorflow/core/lib/core/threadpool.h"
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#include "tensorflow/core/platform/env.h"
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#include "tensorflow/core/platform/test.h"
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namespace tensorflow {
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namespace {
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TEST(TestReffedStatusCallback, CallsBackOK) {
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bool called = false;
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Status status = errors::InvalidArgument("");
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auto done = [&called, &status](const Status& s) {
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called = true;
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status = s;
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};
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auto* cb = new ReffedStatusCallback(std::move(done));
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EXPECT_FALSE(called);
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cb->Unref();
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EXPECT_TRUE(called);
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EXPECT_TRUE(status.ok());
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}
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TEST(TestReffedStatusCallback, CallsBackFail) {
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bool called = false;
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Status status = Status::OK();
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auto done = [&called, &status](const Status& s) {
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called = true;
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status = s;
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};
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auto* cb = new ReffedStatusCallback(std::move(done));
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cb->UpdateStatus(errors::Internal("1"));
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cb->UpdateStatus(errors::Internal("2")); // Will be ignored.
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EXPECT_FALSE(called);
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cb->Unref();
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EXPECT_TRUE(called);
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EXPECT_EQ(status.error_message(), "1");
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}
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TEST(TestReffedStatusCallback, RefMulti) {
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int called = false;
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Status status = Status::OK();
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auto done = [&called, &status](const Status& s) {
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called = true;
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status = s;
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};
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auto* cb = new ReffedStatusCallback(std::move(done));
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cb->Ref();
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cb->UpdateStatus(errors::Internal("1"));
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cb->Ref();
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cb->UpdateStatus(errors::Internal("2")); // Will be ignored.
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cb->Unref();
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cb->Unref();
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EXPECT_FALSE(called);
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cb->Unref(); // Created by constructor.
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EXPECT_TRUE(called);
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EXPECT_EQ(status.error_message(), "1");
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}
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TEST(TestReffedStatusCallback, MultiThreaded) {
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std::atomic<int> num_called(0);
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Status status;
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Notification n;
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auto done = [&num_called, &status, &n](const Status& s) {
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++num_called;
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status = s;
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n.Notify();
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};
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auto* cb = new ReffedStatusCallback(std::move(done));
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thread::ThreadPool threads(Env::Default(), "test", 3);
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for (int i = 0; i < 5; ++i) {
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cb->Ref();
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threads.Schedule([cb]() {
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cb->UpdateStatus(errors::InvalidArgument("err"));
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cb->Unref();
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});
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}
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// Subtract one for the initial (construction) reference.
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cb->Unref();
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n.WaitForNotification();
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EXPECT_EQ(num_called.load(), 1);
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EXPECT_EQ(status.error_message(), "err");
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}
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} // namespace
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} // namespace tensorflow
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