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
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Tests for Watchdog class.
#include "base/logging.h"
#include "base/watchdog.h"
#include "base/spin_wait.h"
#include "base/time.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace {
//------------------------------------------------------------------------------
// Provide a derived class to facilitate testing.
// TODO(JAR): Remove default argument from constructor, and make mandatory.
class WatchdogCounter : public Watchdog {
public:
WatchdogCounter(const TimeDelta& duration,
const std::wstring& thread_watched_name,
bool enabled = true)
: 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_EVIL_CONSTRUCTORS(WatchdogCounter);
};
class WatchdogTest : public testing::Test {
};
//------------------------------------------------------------------------------
// Actual tests
// Minimal constructor/destructor test.
TEST(WatchdogTest, StartupShutdownTest) {
Watchdog watchdog1(TimeDelta::FromMilliseconds(300), L"Disabled", false);
Watchdog watchdog2(TimeDelta::FromMilliseconds(300), L"Enabled", true);
// The following test is depricated, and should be removed when the
// default argument constructor is no longer accepted.
Watchdog watchdog3(TimeDelta::FromMilliseconds(300), L"Default");
}
// Test ability to call Arm and Disarm repeatedly.
TEST(WatchdogTest, ArmDisarmTest) {
Watchdog watchdog1(TimeDelta::FromMilliseconds(300), L"Disabled", false);
watchdog1.Arm();
watchdog1.Disarm();
watchdog1.Arm();
watchdog1.Disarm();
Watchdog watchdog2(TimeDelta::FromMilliseconds(300), L"Enabled", true);
watchdog2.Arm();
watchdog2.Disarm();
watchdog2.Arm();
watchdog2.Disarm();
// The following test is depricated, and should be removed when the
// default argument constructor is no longer accepted.
Watchdog watchdog3(TimeDelta::FromMilliseconds(300), L"Default");
watchdog3.Arm();
watchdog3.Disarm();
watchdog3.Arm();
watchdog3.Disarm();
}
// Make sure a basic alarm fires when the time has expired.
TEST(WatchdogTest, AlarmTest) {
WatchdogCounter watchdog(TimeDelta::FromMilliseconds(10), L"Enabled", true);
watchdog.Arm();
SPIN_FOR_TIMEDELTA_OR_UNTIL_TRUE(TimeDelta::FromSeconds(1),
watchdog.alarm_counter() > 0);
EXPECT_EQ(1, watchdog.alarm_counter());
// Set a time greater than the timeout into the past.
watchdog.ArmSomeTimeDeltaAgo(TimeDelta::FromSeconds(2));
// It should instantly go off, but certainly in less than a second.
SPIN_FOR_TIMEDELTA_OR_UNTIL_TRUE(TimeDelta::FromSeconds(1),
watchdog.alarm_counter() > 1);
EXPECT_EQ(2, watchdog.alarm_counter());
}
// Make sure a disable alarm does nothing, even if we arm it.
TEST(WatchdogTest, ConstructorDisabledTest) {
WatchdogCounter watchdog(TimeDelta::FromMilliseconds(10), L"Disabled", false);
watchdog.Arm();
// Alarm should not fire, as it was disabled.
Sleep(500);
EXPECT_EQ(0, watchdog.alarm_counter());
}
// Make sure Disarming will prevent firing, even after Arming.
TEST(WatchdogTest, DisarmTest) {
WatchdogCounter watchdog(TimeDelta::FromSeconds(1), L"Enabled", true);
watchdog.Arm();
Sleep(100); // Don't sleep too long
watchdog.Disarm();
// Alarm should not fire.
Sleep(1500);
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 a second.
SPIN_FOR_TIMEDELTA_OR_UNTIL_TRUE(TimeDelta::FromSeconds(1),
watchdog.alarm_counter() > 0);
EXPECT_EQ(1, watchdog.alarm_counter());
}
} // namespace
|
