blob: e834ded370003cd6744753a0bd1d0918ddddd319 (
plain)
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
|
// Copyright 2013 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.
#include "base/trace_event/trace_event_system_stats_monitor.h"
#include <sstream>
#include <string>
#include "base/macros.h"
#include "base/trace_event/trace_event_impl.h"
#include "build/build_config.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace trace_event {
#if !defined(OS_IOS)
// Tests for the system stats monitor.
// Exists as a class so it can be a friend of TraceEventSystemStatsMonitor.
class TraceSystemStatsMonitorTest : public testing::Test {
public:
TraceSystemStatsMonitorTest() {}
~TraceSystemStatsMonitorTest() override {}
private:
DISALLOW_COPY_AND_ASSIGN(TraceSystemStatsMonitorTest);
};
//////////////////////////////////////////////////////////////////////////////
TEST_F(TraceSystemStatsMonitorTest, TraceEventSystemStatsMonitor) {
MessageLoop message_loop;
// Start with no observers of the TraceLog.
EXPECT_EQ(0u, TraceLog::GetInstance()->GetObserverCountForTest());
// Creating a system stats monitor adds it to the TraceLog observer list.
std::unique_ptr<TraceEventSystemStatsMonitor> system_stats_monitor(
new TraceEventSystemStatsMonitor(message_loop.task_runner()));
EXPECT_EQ(1u, TraceLog::GetInstance()->GetObserverCountForTest());
EXPECT_TRUE(
TraceLog::GetInstance()->HasEnabledStateObserver(
system_stats_monitor.get()));
// By default the observer isn't dumping memory profiles.
EXPECT_FALSE(system_stats_monitor->IsTimerRunningForTest());
// Simulate enabling tracing.
system_stats_monitor->StartProfiling();
message_loop.RunUntilIdle();
EXPECT_TRUE(system_stats_monitor->IsTimerRunningForTest());
// Simulate disabling tracing.
system_stats_monitor->StopProfiling();
message_loop.RunUntilIdle();
EXPECT_FALSE(system_stats_monitor->IsTimerRunningForTest());
// Deleting the observer removes it from the TraceLog observer list.
system_stats_monitor.reset();
EXPECT_EQ(0u, TraceLog::GetInstance()->GetObserverCountForTest());
}
#endif // !defined(OS_IOS)
} // namespace trace_event
} // namespace base
|
