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
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/media/webaudio/audio_context_manager_impl.h"
#include <vector>
#include "base/memory/raw_ptr.h"
#include "base/test/metrics/histogram_tester.h"
#include "base/test/simple_test_tick_clock.h"
#include "components/ukm/test_ukm_recorder.h"
#include "content/public/test/test_renderer_host.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "services/metrics/public/cpp/ukm_builders.h"
namespace content {
class AudioContextManagerImplTest : public RenderViewHostTestHarness {
public:
using UkmEntry = ukm::builders::Media_WebAudio_AudioContext_AudibleTime;
void SetUp() override {
RenderViewHostTestHarness::SetUp();
clock_.SetNowTicks(base::TimeTicks::Now());
mojo::Remote<blink::mojom::AudioContextManager> service_remote;
audio_context_manager_ = &AudioContextManagerImpl::CreateForTesting(
*main_rfh(), service_remote.BindNewPipeAndPassReceiver());
audio_context_manager_->set_clock_for_testing(&clock_);
}
void TearDown() override {
audio_context_manager_ = nullptr;
RenderViewHostTestHarness::TearDown();
}
AudioContextManagerImpl* audio_context_manager() {
return audio_context_manager_;
}
const ukm::TestAutoSetUkmRecorder& test_ukm_recorder() const {
return test_ukm_recorder_;
}
base::SimpleTestTickClock& clock() { return clock_; }
raw_ptr<AudioContextManagerImpl> audio_context_manager_ = nullptr;
private:
ukm::TestAutoSetUkmRecorder test_ukm_recorder_;
base::SimpleTestTickClock clock_;
};
TEST_F(AudioContextManagerImplTest, TimeBelow10SecondsIsRaw) {
// Entry for 42 milliseconds.
audio_context_manager()->AudioContextAudiblePlaybackStarted(0);
clock().Advance(base::Milliseconds(42));
audio_context_manager()->AudioContextAudiblePlaybackStopped(0);
// Entry for 4242 milliseconds.
audio_context_manager()->AudioContextAudiblePlaybackStarted(0);
clock().Advance(base::Milliseconds(4242));
audio_context_manager()->AudioContextAudiblePlaybackStopped(0);
// Entry for 9999 milliseconds.
audio_context_manager()->AudioContextAudiblePlaybackStarted(0);
clock().Advance(base::Milliseconds(9999));
audio_context_manager()->AudioContextAudiblePlaybackStopped(0);
auto ukm_entries = test_ukm_recorder().GetEntriesByName(UkmEntry::kEntryName);
EXPECT_EQ(3u, ukm_entries.size());
const std::vector<int> expected = {42, 4242, 9999};
for (size_t i = 0; i < expected.size(); ++i) {
EXPECT_EQ(expected[i], *test_ukm_recorder().GetEntryMetric(
ukm_entries[i], UkmEntry::kAudibleTimeName));
}
}
TEST_F(AudioContextManagerImplTest, TimeGreater10SecondsIsRoundedDown) {
// Entry for 42 seconds.
audio_context_manager()->AudioContextAudiblePlaybackStarted(0);
clock().Advance(base::Seconds(42));
audio_context_manager()->AudioContextAudiblePlaybackStopped(0);
// Entry for 42.42 seconds.
audio_context_manager()->AudioContextAudiblePlaybackStarted(0);
clock().Advance(base::Seconds(42.42));
audio_context_manager()->AudioContextAudiblePlaybackStopped(0);
// Entry for 10.01 seconds.
audio_context_manager()->AudioContextAudiblePlaybackStarted(0);
clock().Advance(base::Seconds(10.01));
audio_context_manager()->AudioContextAudiblePlaybackStopped(0);
// Entry for 10.99 seconds.
audio_context_manager()->AudioContextAudiblePlaybackStarted(0);
clock().Advance(base::Seconds(10.99));
audio_context_manager()->AudioContextAudiblePlaybackStopped(0);
auto ukm_entries = test_ukm_recorder().GetEntriesByName(UkmEntry::kEntryName);
EXPECT_EQ(4u, ukm_entries.size());
const std::vector<int> expected = {42000, 42000, 10000, 10000};
for (size_t i = 0; i < expected.size(); ++i) {
EXPECT_EQ(expected[i], *test_ukm_recorder().GetEntryMetric(
ukm_entries[i], UkmEntry::kAudibleTimeName));
}
}
TEST_F(AudioContextManagerImplTest, TracksMaxConcurrentContexts) {
base::HistogramTester histogram_tester;
// Create 2 contexts. Max should be 2.
audio_context_manager()->AudioContextCreated(1);
audio_context_manager()->AudioContextCreated(2);
EXPECT_EQ(audio_context_manager()->max_concurrent_audio_contexts_, 2);
// Close 1 context. The max count should remain at 2.
audio_context_manager()->AudioContextClosed(1);
EXPECT_EQ(audio_context_manager()->max_concurrent_audio_contexts_, 2);
// Create 2 more contexts. Active contexts are now {2, 3, 4}, so the new
// max is 3.
audio_context_manager()->AudioContextCreated(3);
audio_context_manager()->AudioContextCreated(4);
EXPECT_EQ(audio_context_manager()->max_concurrent_audio_contexts_, 3);
// Close 3 contexts, the recorded maximum concurrent count remain as 3.
audio_context_manager()->AudioContextClosed(2);
audio_context_manager()->AudioContextClosed(3);
audio_context_manager()->AudioContextClosed(4);
EXPECT_EQ(audio_context_manager()->max_concurrent_audio_contexts_, 3);
// The UMA histogram is recorded on destruction. To test this, we must
// trigger the destruction of the AudioContextManager by destroying its owning
// RenderFrameHost.
audio_context_manager_ = nullptr;
DeleteContents();
base::RunLoop().RunUntilIdle();
// Verify that the final maximum value was correctly recorded.
histogram_tester.ExpectUniqueSample(
"WebAudio.AudioContext.ConcurrentAudioContexts",
/*sample=*/3,
/*expected_bucket_count=*/1);
}
TEST_F(AudioContextManagerImplTest, NoContextsCreated) {
base::HistogramTester histogram_tester;
// No contexts were ever created.
EXPECT_EQ(audio_context_manager()->max_concurrent_audio_contexts_, 0);
// Trigger destruction to record the UMA metric.
audio_context_manager_ = nullptr;
DeleteContents();
base::RunLoop().RunUntilIdle();
// Verify that the sample for 0 was correctly recorded since no context was
// ever created.
histogram_tester.ExpectUniqueSample(
"WebAudio.AudioContext.ConcurrentAudioContexts",
/*sample=*/0,
/*expected_bucket_count=*/1);
}
} // namespace content
|
