1 files changed, 50 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/audio_processing/aec3/echo_path_variability_unittest.cc b/third_party/libwebrtc/modules/audio_processing/aec3/echo_path_variability_unittest.cc
new file mode 100644
index 0000000000..0f10f95f72
--- /dev/null
+++ b/third_party/libwebrtc/modules/audio_processing/aec3/echo_path_variability_unittest.cc
@@ -0,0 +1,50 @@
+/*
+ *  Copyright (c) 2017 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/aec3/echo_path_variability.h"
+
+#include "test/gtest.h"
+
+namespace webrtc {
+
+TEST(EchoPathVariability, CorrectBehavior) {
+  // Test correct passing and reporting of the gain change information.
+  EchoPathVariability v(
+      true, EchoPathVariability::DelayAdjustment::kNewDetectedDelay, false);
+  EXPECT_TRUE(v.gain_change);
+  EXPECT_TRUE(v.delay_change ==
+              EchoPathVariability::DelayAdjustment::kNewDetectedDelay);
+  EXPECT_TRUE(v.AudioPathChanged());
+  EXPECT_FALSE(v.clock_drift);
+
+  v = EchoPathVariability(true, EchoPathVariability::DelayAdjustment::kNone,
+                          false);
+  EXPECT_TRUE(v.gain_change);
+  EXPECT_TRUE(v.delay_change == EchoPathVariability::DelayAdjustment::kNone);
+  EXPECT_TRUE(v.AudioPathChanged());
+  EXPECT_FALSE(v.clock_drift);
+
+  v = EchoPathVariability(
+      false, EchoPathVariability::DelayAdjustment::kNewDetectedDelay, false);
+  EXPECT_FALSE(v.gain_change);
+  EXPECT_TRUE(v.delay_change ==
+              EchoPathVariability::DelayAdjustment::kNewDetectedDelay);
+  EXPECT_TRUE(v.AudioPathChanged());
+  EXPECT_FALSE(v.clock_drift);
+
+  v = EchoPathVariability(false, EchoPathVariability::DelayAdjustment::kNone,
+                          false);
+  EXPECT_FALSE(v.gain_change);
+  EXPECT_TRUE(v.delay_change == EchoPathVariability::DelayAdjustment::kNone);
+  EXPECT_FALSE(v.AudioPathChanged());
+  EXPECT_FALSE(v.clock_drift);
+}
+
+}  // namespace webrtc