Index: webrtc/base/bucketratetracker_unittest.cc |
diff --git a/webrtc/base/bucketratetracker_unittest.cc b/webrtc/base/bucketratetracker_unittest.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..702bb09d0640e41057f74c0c5ce5f8b7469927f6 |
--- /dev/null |
+++ b/webrtc/base/bucketratetracker_unittest.cc |
@@ -0,0 +1,123 @@ |
+/* |
+ * Copyright 2015 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/base/gunit.h" |
+#include "webrtc/base/bucketratetracker.h" |
+ |
+namespace rtc { |
+ |
+class BucketRateTrackerForTest : public BucketRateTracker { |
+ public: |
+ BucketRateTrackerForTest() : BucketRateTracker(100u, 10u), time_(0) {} |
+ virtual uint32 Time() const { return time_; } |
+ void AdvanceTime(uint32 delta) { time_ += delta; } |
+ |
+ private: |
+ uint32 time_; |
+}; |
+ |
+TEST(BucketRateTrackerTest, Test30FPS) { |
+ BucketRateTrackerForTest tracker; |
+ |
+ for (int i = 0; i < 300; ++i) { |
+ tracker.AddSamples(1); |
+ tracker.AdvanceTime(33); |
+ if (i % 3 == 0) { |
+ tracker.AdvanceTime(1); |
+ } |
+ } |
+ EXPECT_EQ(30u, tracker.ComputeCurrentRate(50000u)); |
+} |
+ |
+TEST(BucketRateTrackerTest, Test60FPS) { |
+ BucketRateTrackerForTest tracker; |
+ |
+ for (int i = 0; i < 300; ++i) { |
+ tracker.AddSamples(1); |
+ tracker.AdvanceTime(16); |
+ if (i % 3 != 0) { |
+ tracker.AdvanceTime(1); |
+ } |
+ } |
+ EXPECT_EQ(60u, tracker.ComputeCurrentRate(1000u)); |
+} |
+ |
+TEST(BucketRateTrackerTest, TestRateTrackerBasics) { |
+ BucketRateTrackerForTest tracker; |
+ EXPECT_EQ(0U, tracker.ComputeCurrentRate(1000u)); |
+ |
+ // Add a sample. |
+ tracker.AddSamples(1234); |
+ // Advance the clock by 100 ms. |
+ tracker.AdvanceTime(100); |
+ EXPECT_EQ(12340U, tracker.ComputeCurrentRate(1000u)); |
+ |
+ // Repeat. |
+ tracker.AddSamples(1234); |
+ tracker.AdvanceTime(100); |
+ EXPECT_EQ(12340U, tracker.ComputeCurrentRate(1000u)); |
+ |
+ // Advance the clock by 800 ms, so we've elapsed a full second. |
+ // units_second should now be filled in properly. |
+ tracker.AdvanceTime(800); |
+ EXPECT_EQ(1234U * 2, tracker.ComputeCurrentRate(1000u)); |
+ |
+ // Poll the tracker again immediately. The reported rate should stay the same. |
+ EXPECT_EQ(1234U * 2, tracker.ComputeCurrentRate(1000u)); |
+ |
+ // Do nothing and advance by a second. We should drop down to zero. |
+ tracker.AdvanceTime(1000); |
+ EXPECT_EQ(0U, tracker.ComputeCurrentRate(1000u)); |
+ |
+ // Send a bunch of data at a constant rate for 5.5 "seconds". |
+ // We should report the rate properly. |
+ for (int i = 0; i < 5500; i += 100) { |
+ tracker.AddSamples(9876U); |
+ tracker.AdvanceTime(100); |
+ } |
+ EXPECT_EQ(9876U * 10, tracker.ComputeCurrentRate(1000u)); |
+ |
+ // Advance the clock by 500 ms. Since we sent nothing over this half-second, |
+ // the reported rate should be reduced by half. |
+ tracker.AdvanceTime(500); |
+ EXPECT_EQ(9876U * 5, tracker.ComputeCurrentRate(1000u)); |
+} |
+ |
+TEST(BucketRateTrackerTest, TestGetUnitSecondsAfterInitialValue) { |
+ BucketRateTrackerForTest tracker; |
+ tracker.AddSamples(1234); |
+ tracker.AdvanceTime(1000); |
+ EXPECT_EQ(1234u, tracker.ComputeCurrentRate(1000u)); |
+} |
+ |
+class IntervalRateTrackerForTest : public IntervalRateTracker { |
+ public: |
+ IntervalRateTrackerForTest() : IntervalRateTracker(15u), time_(0) {} |
+ virtual uint32 Time() const { return time_; } |
+ void AdvanceTime(uint32 delta) { time_ += delta; } |
+ |
+ private: |
+ uint32 time_; |
+}; |
+ |
+TEST(IntervalRateTrackerTest, Test30FPS) { |
+ IntervalRateTrackerForTest tracker; |
+ |
+ for (int i = 0; i < 30*30; ++i) { |
+ tracker.AddSamples(1); |
+ tracker.AdvanceTime(33); |
+ if (i % 3 == 0) { |
+ tracker.AdvanceTime(1); |
+ } |
+ } |
+ EXPECT_EQ(30u, tracker.ComputeCurrentRate(1000u)); |
+} |
+ |
+} // namespace rtc |