1/*
2 *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11#include "webrtc/system_wrappers/interface/event_tracer.h"
12
13#include "testing/gtest/include/gtest/gtest.h"
14#include "webrtc/system_wrappers/interface/static_instance.h"
15#include "webrtc/system_wrappers/interface/trace_event.h"
16
17namespace {
18
19class TestStatistics {
20 public:
21  TestStatistics() : events_logged_(0) {
22  }
23
24  void Reset() {
25    events_logged_ = 0;
26  }
27
28  void Increment() {
29    ++events_logged_;
30  }
31
32  int Count() const { return events_logged_; }
33
34  static TestStatistics* Get() {
35    static TestStatistics* test_stats = NULL;
36    if (!test_stats)
37      test_stats = new TestStatistics();
38    return test_stats;
39  }
40
41 private:
42  int events_logged_;
43};
44
45static const unsigned char* GetCategoryEnabledHandler(const char* name) {
46  return reinterpret_cast<const unsigned char*>("test");
47}
48
49static void AddTraceEventHandler(char phase,
50                                 const unsigned char* category_enabled,
51                                 const char* name,
52                                 unsigned long long id,
53                                 int num_args,
54                                 const char** arg_names,
55                                 const unsigned char* arg_types,
56                                 const unsigned long long* arg_values,
57                                 unsigned char flags) {
58  TestStatistics::Get()->Increment();
59}
60
61}  // namespace
62
63namespace webrtc {
64
65TEST(EventTracerTest, EventTracerDisabled) {
66  {
67    TRACE_EVENT0("test", "EventTracerDisabled");
68  }
69  EXPECT_FALSE(TestStatistics::Get()->Count());
70  TestStatistics::Get()->Reset();
71}
72
73TEST(EventTracerTest, ScopedTraceEvent) {
74  SetupEventTracer(&GetCategoryEnabledHandler, &AddTraceEventHandler);
75  {
76    TRACE_EVENT0("test", "ScopedTraceEvent");
77  }
78  EXPECT_EQ(2, TestStatistics::Get()->Count());
79  TestStatistics::Get()->Reset();
80}
81
82}  // namespace webrtc
83