Logging basic bad call detection

webrtc/video/bad_call_threshold_unittest.cc

+/*
+ *  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 "webrtc/video/bad_call_threshold.h"
+
+#include "webrtc/test/gtest.h"
+
+namespace webrtc {
+
+TEST(BadCallThresholdTest, BackAndForth) {
+  BadCallThreshold thresh(1, 10, 0.75f, 0);
+  for (int i = 0; i < 7; ++i) {
+    ASSERT_EQ(BadCallThreshold::STILL_LOW, thresh.AddMeasurement(1));
+  }
+  ASSERT_EQ(BadCallThreshold::NEWLY_HIGH, thresh.AddMeasurement(1));
+  ASSERT_EQ(BadCallThreshold::STILL_HIGH, thresh.AddMeasurement(1));
+
+  for (int i = 0; i < 7; ++i) {
+    ASSERT_EQ(BadCallThreshold::STILL_HIGH, thresh.AddMeasurement(0));
+  }
+  ASSERT_EQ(BadCallThreshold::NEWLY_LOW, thresh.AddMeasurement(0));
+  ASSERT_EQ(BadCallThreshold::STILL_LOW, thresh.AddMeasurement(0));
+}
+
+}  // namespace webrtc