a78a94e838
BUG=4442 R=mflodman@webrtc.org, pbos@webrtc.org Review URL: https://webrtc-codereview.appspot.com/43829004 Cr-Commit-Position: refs/heads/master@{#8751} git-svn-id: http://webrtc.googlecode.com/svn/trunk@8751 4adac7df-926f-26a2-2b94-8c16560cd09d
82 lines
2.5 KiB
C++
82 lines
2.5 KiB
C++
/*
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* Copyright 2010 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "webrtc/base/gunit.h"
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#include "webrtc/base/ratetracker.h"
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namespace rtc {
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class RateTrackerForTest : public RateTracker {
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public:
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RateTrackerForTest() : time_(0) {}
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virtual uint32 Time() const { return time_; }
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void AdvanceTime(uint32 delta) { time_ += delta; }
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private:
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uint32 time_;
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};
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TEST(RateTrackerTest, TestBasics) {
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RateTrackerForTest tracker;
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EXPECT_EQ(0U, tracker.total_units());
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EXPECT_EQ(0U, tracker.units_second());
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// Add a sample.
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tracker.Update(1234);
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// Advance the clock by 100 ms.
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tracker.AdvanceTime(100);
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// total_units should advance, but units_second should stay 0.
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EXPECT_EQ(1234U, tracker.total_units());
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EXPECT_EQ(0U, tracker.units_second());
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// Repeat.
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tracker.Update(1234);
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tracker.AdvanceTime(100);
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EXPECT_EQ(1234U * 2, tracker.total_units());
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EXPECT_EQ(0U, tracker.units_second());
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// Advance the clock by 800 ms, so we've elapsed a full second.
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// units_second should now be filled in properly.
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tracker.AdvanceTime(800);
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EXPECT_EQ(1234U * 2, tracker.total_units());
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EXPECT_EQ(1234U * 2, tracker.units_second());
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// Poll the tracker again immediately. The reported rate should stay the same.
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EXPECT_EQ(1234U * 2, tracker.total_units());
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EXPECT_EQ(1234U * 2, tracker.units_second());
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// Do nothing and advance by a second. We should drop down to zero.
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tracker.AdvanceTime(1000);
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EXPECT_EQ(1234U * 2, tracker.total_units());
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EXPECT_EQ(0U, tracker.units_second());
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// Send a bunch of data at a constant rate for 5.5 "seconds".
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// We should report the rate properly.
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for (int i = 0; i < 5500; i += 100) {
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tracker.Update(9876U);
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tracker.AdvanceTime(100);
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}
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EXPECT_EQ(9876U * 10, tracker.units_second());
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// Advance the clock by 500 ms. Since we sent nothing over this half-second,
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// the reported rate should be reduced by half.
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tracker.AdvanceTime(500);
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EXPECT_EQ(9876U * 5, tracker.units_second());
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}
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TEST(RateTrackerTest, TestGetUnitSecondsAfterInitialValue) {
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RateTrackerForTest tracker;
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tracker.Update(1234);
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tracker.AdvanceTime(1000);
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EXPECT_EQ(1234u, tracker.units_second());
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}
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} // namespace rtc
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