1// Copyright (c) 2011 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5// Tests of CancellationFlag class.
6
7#include "base/synchronization/cancellation_flag.h"
8
9#include "base/bind.h"
10#include "base/location.h"
11#include "base/logging.h"
12#include "base/single_thread_task_runner.h"
13#include "base/synchronization/spin_wait.h"
14#include "base/threading/thread.h"
15#include "base/time/time.h"
16#include "testing/gtest/include/gtest/gtest.h"
17#include "testing/platform_test.h"
18
19namespace base {
20
21namespace {
22
23//------------------------------------------------------------------------------
24// Define our test class.
25//------------------------------------------------------------------------------
26
27void CancelHelper(CancellationFlag* flag) {
28#if GTEST_HAS_DEATH_TEST
29  ASSERT_DEBUG_DEATH(flag->Set(), "");
30#endif
31}
32
33TEST(CancellationFlagTest, SimpleSingleThreadedTest) {
34  CancellationFlag flag;
35  ASSERT_FALSE(flag.IsSet());
36  flag.Set();
37  ASSERT_TRUE(flag.IsSet());
38}
39
40TEST(CancellationFlagTest, DoubleSetTest) {
41  CancellationFlag flag;
42  ASSERT_FALSE(flag.IsSet());
43  flag.Set();
44  ASSERT_TRUE(flag.IsSet());
45  flag.Set();
46  ASSERT_TRUE(flag.IsSet());
47}
48
49TEST(CancellationFlagTest, SetOnDifferentThreadDeathTest) {
50  // Checks that Set() can't be called from any other thread.
51  // CancellationFlag should die on a DCHECK if Set() is called from
52  // other thread.
53  ::testing::FLAGS_gtest_death_test_style = "threadsafe";
54  Thread t("CancellationFlagTest.SetOnDifferentThreadDeathTest");
55  ASSERT_TRUE(t.Start());
56  ASSERT_TRUE(t.message_loop());
57  ASSERT_TRUE(t.IsRunning());
58
59  CancellationFlag flag;
60  t.task_runner()->PostTask(FROM_HERE, base::Bind(&CancelHelper, &flag));
61}
62
63}  // namespace
64
65}  // namespace base
66