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/*
* Copyright (c) 2016 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 "modules/audio_processing/echo_detector/circular_buffer.h"
#include "test/gtest.h"
namespace webrtc {
TEST(CircularBufferTests, LessThanMaxTest) {
CircularBuffer test_buffer(3);
test_buffer.Push(1.f);
test_buffer.Push(2.f);
EXPECT_EQ(1.f, test_buffer.Pop());
EXPECT_EQ(2.f, test_buffer.Pop());
}
TEST(CircularBufferTests, FillTest) {
CircularBuffer test_buffer(3);
test_buffer.Push(1.f);
test_buffer.Push(2.f);
test_buffer.Push(3.f);
EXPECT_EQ(1.f, test_buffer.Pop());
EXPECT_EQ(2.f, test_buffer.Pop());
EXPECT_EQ(3.f, test_buffer.Pop());
}
TEST(CircularBufferTests, OverflowTest) {
CircularBuffer test_buffer(3);
test_buffer.Push(1.f);
test_buffer.Push(2.f);
test_buffer.Push(3.f);
test_buffer.Push(4.f);
// Because the circular buffer has a size of 3, the first insert should have
// been forgotten.
EXPECT_EQ(2.f, test_buffer.Pop());
EXPECT_EQ(3.f, test_buffer.Pop());
EXPECT_EQ(4.f, test_buffer.Pop());
}
TEST(CircularBufferTests, ReadFromEmpty) {
CircularBuffer test_buffer(3);
EXPECT_EQ(absl::nullopt, test_buffer.Pop());
}
} // namespace webrtc
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