1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Tests for Watchdog class.
#include "base/platform_thread.h"
#include "base/spin_wait.h"
#include "base/time.h"
#include "base/watchdog.h"
#include "testing/gtest/include/gtest/gtest.h"
using base::TimeDelta;
namespace {
//------------------------------------------------------------------------------
// Provide a derived class to facilitate testing.
class WatchdogCounter : public Watchdog {
public:
WatchdogCounter(const TimeDelta& duration,
const std::string& thread_watched_name,
bool enabled)
: Watchdog(duration, thread_watched_name, enabled), alarm_counter_(0) {
}
virtual ~WatchdogCounter() {}
virtual void Alarm() {
alarm_counter_++;
Watchdog::Alarm();
}
int alarm_counter() { return alarm_counter_; }
private:
int alarm_counter_;
DISALLOW_COPY_AND_ASSIGN(WatchdogCounter);
};
class WatchdogTest : public testing::Test {
};
//------------------------------------------------------------------------------
// Actual tests
// Minimal constructor/destructor test.
TEST(WatchdogTest, StartupShutdownTest) {
Watchdog watchdog1(TimeDelta::FromMilliseconds(300), "Disabled", false);
Watchdog watchdog2(TimeDelta::FromMilliseconds(300), "Enabled", true);
}
// Test ability to call Arm and Disarm repeatedly.
TEST(WatchdogTest, ArmDisarmTest) {
Watchdog watchdog1(TimeDelta::FromMilliseconds(300), "Disabled", false);
watchdog1.Arm();
watchdog1.Disarm();
watchdog1.Arm();
watchdog1.Disarm();
Watchdog watchdog2(TimeDelta::FromMilliseconds(300), "Enabled", true);
watchdog2.Arm();
watchdog2.Disarm();
watchdog2.Arm();
watchdog2.Disarm();
}
// Make sure a basic alarm fires when the time has expired.
TEST(WatchdogTest, AlarmTest) {
WatchdogCounter watchdog(TimeDelta::FromMilliseconds(10), "Enabled", true);
watchdog.Arm();
SPIN_FOR_TIMEDELTA_OR_UNTIL_TRUE(TimeDelta::FromMinutes(5),
watchdog.alarm_counter() > 0);
EXPECT_EQ(1, watchdog.alarm_counter());
}
// Make sure a basic alarm fires when the time has expired.
TEST(WatchdogTest, AlarmPriorTimeTest) {
WatchdogCounter watchdog(TimeDelta::TimeDelta(), "Enabled2", true);
// Set a time in the past.
watchdog.ArmSomeTimeDeltaAgo(TimeDelta::FromSeconds(2));
// It should instantly go off, but certainly in less than 5 minutes.
SPIN_FOR_TIMEDELTA_OR_UNTIL_TRUE(TimeDelta::FromMinutes(5),
watchdog.alarm_counter() > 0);
EXPECT_EQ(1, watchdog.alarm_counter());
}
// Make sure a disable alarm does nothing, even if we arm it.
TEST(WatchdogTest, ConstructorDisabledTest) {
WatchdogCounter watchdog(TimeDelta::FromMilliseconds(10), "Disabled", false);
watchdog.Arm();
// Alarm should not fire, as it was disabled.
PlatformThread::Sleep(500);
EXPECT_EQ(0, watchdog.alarm_counter());
}
// Make sure Disarming will prevent firing, even after Arming.
TEST(WatchdogTest, DisarmTest) {
WatchdogCounter watchdog(TimeDelta::FromSeconds(5), "Enabled3", true);
watchdog.Arm();
PlatformThread::Sleep(100); // Don't sleep too long
watchdog.Disarm();
// Alarm should not fire.
PlatformThread::Sleep(5500);
EXPECT_EQ(0, watchdog.alarm_counter());
// ...but even after disarming, we can still use the alarm...
// Set a time greater than the timeout into the past.
watchdog.ArmSomeTimeDeltaAgo(TimeDelta::FromSeconds(2));
// It should almost instantly go off, but certainly in less than 5 minutes.
SPIN_FOR_TIMEDELTA_OR_UNTIL_TRUE(TimeDelta::FromMinutes(5),
watchdog.alarm_counter() > 0);
EXPECT_EQ(1, watchdog.alarm_counter());
}
} // namespace
|
