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Side by Side Diff: webrtc/modules/audio_processing/echo_detector/moving_max_unittest.cc

Issue 2629563003: Added a new echo likelihood stat that reports the maximum value from a previous time period. (Closed)
Patch Set: Small bugfix. Created 3 years, 11 months ago
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1 /*
2 * Copyright (c) 2017 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/modules/audio_processing/echo_detector/moving_max.h"
12 #include "webrtc/test/gtest.h"
13
14 namespace webrtc {
15
16 // Test if the maximum is correctly found.
17 TEST(MovingMaxTests, SimpleTest) {
18 MovingMax test_moving_max(5);
19 test_moving_max.Update(1.0f);
20 test_moving_max.Update(1.1f);
21 test_moving_max.Update(1.9f);
22 test_moving_max.Update(1.87f);
23 test_moving_max.Update(1.89f);
24 EXPECT_EQ(1.9f, test_moving_max.max());
25 }
26
27 // Test if values fall out of the window when expected.
28 TEST(MovingMaxTests, SlidingWindowTest) {
29 MovingMax test_moving_max(5);
30 test_moving_max.Update(1.0f);
31 test_moving_max.Update(1.9f);
32 test_moving_max.Update(1.7f);
33 test_moving_max.Update(1.87f);
34 test_moving_max.Update(1.89f);
35 test_moving_max.Update(1.3f);
36 test_moving_max.Update(1.2f);
37 EXPECT_LT(test_moving_max.max(), 1.9f);
38 }
39
40 // Test if Clear() works as expected.
41 TEST(MovingMaxTests, ClearTest) {
42 MovingMax test_moving_max(5);
43 test_moving_max.Update(1.0f);
44 test_moving_max.Update(1.1f);
45 test_moving_max.Update(1.9f);
46 test_moving_max.Update(1.87f);
47 test_moving_max.Update(1.89f);
48 EXPECT_EQ(1.9f, test_moving_max.max());
49 test_moving_max.Clear();
50 EXPECT_EQ(0.f, test_moving_max.max());
51 }
52
53 // Test the decay of the estimated maximum.
54 TEST(MovingMaxTests, DecayTest) {
55 MovingMax test_moving_max(1);
56 test_moving_max.Update(1.0f);
57 float previous_value = 1.0f;
58 for (int i = 0; i < 500; i++) {
59 test_moving_max.Update(0.0f);
60 EXPECT_LT(test_moving_max.max(), previous_value);
61 EXPECT_GT(test_moving_max.max(), 0.0f);
62 previous_value = test_moving_max.max();
63 }
64 EXPECT_LT(test_moving_max.max(), 0.01f);
65 }
66
67 } // namespace webrtc
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