forked from chromium/chromium
-
Notifications
You must be signed in to change notification settings - Fork 0
/
frame_rate_estimator_unittest.cc
97 lines (84 loc) · 3.26 KB
/
frame_rate_estimator_unittest.cc
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
// Copyright 2020 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 "cc/trees/frame_rate_estimator.h"
#include "base/cxx17_backports.h"
#include "base/test/test_simple_task_runner.h"
#include "components/viz/common/frame_sinks/begin_frame_args.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace cc {
namespace {
class FrameRateEstimatorTest : public testing::Test {
public:
FrameRateEstimatorTest() = default;
~FrameRateEstimatorTest() override = default;
void SetUp() override {
task_runner_ = base::MakeRefCounted<base::TestSimpleTaskRunner>();
estimator_ = std::make_unique<FrameRateEstimator>(task_runner_.get());
}
void TearDown() override {
estimator_.reset();
task_runner_.reset();
}
protected:
scoped_refptr<base::TestSimpleTaskRunner> task_runner_;
std::unique_ptr<FrameRateEstimator> estimator_;
};
TEST_F(FrameRateEstimatorTest, ToggleEstimationEnabled) {
EXPECT_EQ(estimator_->GetPreferredInterval(),
viz::BeginFrameArgs::MinInterval());
estimator_->SetFrameEstimationEnabled(true);
EXPECT_NE(estimator_->GetPreferredInterval(),
viz::BeginFrameArgs::MinInterval());
estimator_->SetFrameEstimationEnabled(false);
EXPECT_EQ(estimator_->GetPreferredInterval(),
viz::BeginFrameArgs::MinInterval());
}
TEST_F(FrameRateEstimatorTest, FrameHistoryUsed) {
estimator_->SetFrameEstimationEnabled(true);
EXPECT_NE(estimator_->GetPreferredInterval(),
viz::BeginFrameArgs::MinInterval());
base::TimeTicks time;
for (int i = 0; i < 10; ++i) {
estimator_->WillDraw(time);
time += viz::BeginFrameArgs::DefaultInterval();
}
EXPECT_EQ(estimator_->GetPreferredInterval(),
viz::BeginFrameArgs::MinInterval());
estimator_->WillDraw(time + (3 * viz::BeginFrameArgs::DefaultInterval()));
EXPECT_NE(estimator_->GetPreferredInterval(),
viz::BeginFrameArgs::MinInterval());
}
TEST_F(FrameRateEstimatorTest, InputPriorityMode) {
estimator_->SetFrameEstimationEnabled(true);
estimator_->NotifyInputEvent();
EXPECT_EQ(estimator_->GetPreferredInterval(),
viz::BeginFrameArgs::MinInterval());
task_runner_->RunUntilIdle();
EXPECT_NE(estimator_->GetPreferredInterval(),
viz::BeginFrameArgs::MinInterval());
}
TEST_F(FrameRateEstimatorTest, RafAtHalfFps) {
estimator_->SetFrameEstimationEnabled(true);
// Recorded rAF intervals at 30 fps.
const base::TimeDelta kIntervals[] = {
base::TimeDelta::FromMicroseconds(33425),
base::TimeDelta::FromMicroseconds(33298),
base::TimeDelta::FromMicroseconds(33396),
base::TimeDelta::FromMicroseconds(33339),
base::TimeDelta::FromMicroseconds(33431),
base::TimeDelta::FromMicroseconds(33320),
base::TimeDelta::FromMicroseconds(33364),
base::TimeDelta::FromMicroseconds(33360)};
const base::TimeDelta kIntervalForHalfFps =
viz::BeginFrameArgs::DefaultInterval() * 2;
base::TimeTicks time;
for (size_t i = 0; i <= base::size(kIntervals); ++i) {
estimator_->WillDraw(time);
EXPECT_EQ(kIntervalForHalfFps, estimator_->GetPreferredInterval());
if (i < base::size(kIntervals))
time += kIntervals[i];
}
}
} // namespace
} // namespace cc