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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /third_party/libwebrtc/rtc_base/numerics/exp_filter_unittest.cc | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/libwebrtc/rtc_base/numerics/exp_filter_unittest.cc')
-rw-r--r-- | third_party/libwebrtc/rtc_base/numerics/exp_filter_unittest.cc | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/third_party/libwebrtc/rtc_base/numerics/exp_filter_unittest.cc b/third_party/libwebrtc/rtc_base/numerics/exp_filter_unittest.cc new file mode 100644 index 0000000000..f5b436f1b9 --- /dev/null +++ b/third_party/libwebrtc/rtc_base/numerics/exp_filter_unittest.cc @@ -0,0 +1,72 @@ +/* + * Copyright 2014 The WebRTC Project Authors. All rights reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "rtc_base/numerics/exp_filter.h" + +#include <cmath> + +#include "test/gtest.h" + +namespace rtc { + +TEST(ExpFilterTest, FirstTimeOutputEqualInput) { + // No max value defined. + ExpFilter filter = ExpFilter(0.9f); + filter.Apply(100.0f, 10.0f); + + // First time, first argument no effect. + double value = 10.0f; + EXPECT_FLOAT_EQ(value, filter.filtered()); +} + +TEST(ExpFilterTest, SecondTime) { + float value; + + ExpFilter filter = ExpFilter(0.9f); + filter.Apply(100.0f, 10.0f); + + // First time, first argument no effect. + value = 10.0f; + + filter.Apply(10.0f, 20.0f); + float alpha = std::pow(0.9f, 10.0f); + value = alpha * value + (1.0f - alpha) * 20.0f; + EXPECT_FLOAT_EQ(value, filter.filtered()); +} + +TEST(ExpFilterTest, Reset) { + ExpFilter filter = ExpFilter(0.9f); + filter.Apply(100.0f, 10.0f); + + filter.Reset(0.8f); + filter.Apply(100.0f, 1.0f); + + // Become first time after a reset. + double value = 1.0f; + EXPECT_FLOAT_EQ(value, filter.filtered()); +} + +TEST(ExpfilterTest, OutputLimitedByMax) { + double value; + + // Max value defined. + ExpFilter filter = ExpFilter(0.9f, 1.0f); + filter.Apply(100.0f, 10.0f); + + // Limited to max value. + value = 1.0f; + EXPECT_EQ(value, filter.filtered()); + + filter.Apply(1.0f, 0.0f); + value = 0.9f * value; + EXPECT_FLOAT_EQ(value, filter.filtered()); +} + +} // namespace rtc |