Index: webrtc/modules/congestion_controller/probe_controller_unittest.cc |
diff --git a/webrtc/modules/congestion_controller/probe_controller_unittest.cc b/webrtc/modules/congestion_controller/probe_controller_unittest.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..693277552c6e0d9c1e506fa0021096dda5e2dba9 |
--- /dev/null |
+++ b/webrtc/modules/congestion_controller/probe_controller_unittest.cc |
@@ -0,0 +1,82 @@ |
+/* |
+ * 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 <memory> |
+ |
+#include "testing/gmock/include/gmock/gmock.h" |
+#include "testing/gtest/include/gtest/gtest.h" |
+#include "webrtc/base/logging.h" |
+#include "webrtc/modules/congestion_controller/probe_controller.h" |
+#include "webrtc/modules/pacing/mock/mock_paced_sender.h" |
+#include "webrtc/system_wrappers/include/clock.h" |
+ |
+using testing::_; |
+using testing::AtLeast; |
+using testing::NiceMock; |
+ |
+namespace webrtc { |
+namespace test { |
+ |
+namespace { |
+ |
+constexpr int kMinBitrateBps = 100; |
+constexpr int kStartBitrateBps = 300; |
+constexpr int kMaxBitrateBps = 1000; |
+ |
+} // namespace |
+ |
+class ProbeControllerTest : public ::testing::Test { |
+ protected: |
+ ProbeControllerTest() : clock_(0) { |
+ probe_controller_.reset(new ProbeController(&pacer_, &clock_)); |
+ } |
+ ~ProbeControllerTest() override {} |
+ |
+ SimulatedClock clock_; |
+ NiceMock<MockPacedSender> pacer_; |
+ std::unique_ptr<ProbeController> probe_controller_; |
+}; |
+ |
+TEST_F(ProbeControllerTest, InitiatesProbingAtStart) { |
+ EXPECT_CALL(pacer_, CreateProbeCluster(_, _)).Times(AtLeast(2)); |
+ probe_controller_->SetBitrates(kMinBitrateBps, kStartBitrateBps, |
+ kMaxBitrateBps); |
+} |
+ |
+TEST_F(ProbeControllerTest, InitiatesProbingOnMaxBitrateIncrease) { |
+ EXPECT_CALL(pacer_, CreateProbeCluster(_, _)).Times(AtLeast(2)); |
+ probe_controller_->SetBitrates(kMinBitrateBps, kStartBitrateBps, |
+ kMaxBitrateBps); |
+ clock_.AdvanceTimeMilliseconds(25); |
+ |
+ probe_controller_->SetEstimatedBitrate(kStartBitrateBps); |
+ EXPECT_CALL(pacer_, CreateProbeCluster(kMaxBitrateBps + 100, _)); |
+ probe_controller_->SetBitrates(kMinBitrateBps, kStartBitrateBps, |
+ kMaxBitrateBps + 100); |
+} |
+ |
+TEST_F(ProbeControllerTest, TestExponentialProbing) { |
+ probe_controller_->SetBitrates(kMinBitrateBps, kStartBitrateBps, |
+ kMaxBitrateBps); |
+ EXPECT_CALL(pacer_, CreateProbeCluster(2 * 1800, _)); |
+ probe_controller_->SetEstimatedBitrate(1800); |
+} |
+ |
+TEST_F(ProbeControllerTest, TestExponentialProbingTimeout) { |
+ probe_controller_->SetBitrates(kMinBitrateBps, kStartBitrateBps, |
+ kMaxBitrateBps); |
+ |
+ // Advance far enough to cause a time out in waiting for probing result. |
+ clock_.AdvanceTimeMilliseconds(5000); |
+ EXPECT_CALL(pacer_, CreateProbeCluster(2 * 1800, _)).Times(0); |
+ probe_controller_->SetEstimatedBitrate(1800); |
+} |
+ |
+} // namespace test |
+} // namespace webrtc |