28e2075280
trunk/talk git-svn-id: http://webrtc.googlecode.com/svn/trunk@4318 4adac7df-926f-26a2-2b94-8c16560cd09d
92 lines
3.3 KiB
C++
92 lines
3.3 KiB
C++
/*
|
|
* libjingle
|
|
* Copyright 2010, Google Inc.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
|
|
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
|
|
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
|
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
|
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include "talk/base/gunit.h"
|
|
#include "talk/base/ratetracker.h"
|
|
|
|
namespace talk_base {
|
|
|
|
class RateTrackerForTest : public RateTracker {
|
|
public:
|
|
RateTrackerForTest() : time_(0) {}
|
|
virtual uint32 Time() const { return time_; }
|
|
void AdvanceTime(uint32 delta) { time_ += delta; }
|
|
|
|
private:
|
|
uint32 time_;
|
|
};
|
|
|
|
TEST(RateTrackerTest, TestBasics) {
|
|
RateTrackerForTest tracker;
|
|
EXPECT_EQ(0U, tracker.total_units());
|
|
EXPECT_EQ(0U, tracker.units_second());
|
|
|
|
// Add a sample.
|
|
tracker.Update(1234);
|
|
// Advance the clock by 100 ms.
|
|
tracker.AdvanceTime(100);
|
|
// total_units should advance, but units_second should stay 0.
|
|
EXPECT_EQ(1234U, tracker.total_units());
|
|
EXPECT_EQ(0U, tracker.units_second());
|
|
|
|
// Repeat.
|
|
tracker.Update(1234);
|
|
tracker.AdvanceTime(100);
|
|
EXPECT_EQ(1234U * 2, tracker.total_units());
|
|
EXPECT_EQ(0U, tracker.units_second());
|
|
|
|
// 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.total_units());
|
|
EXPECT_EQ(1234U * 2, tracker.units_second());
|
|
|
|
// Poll the tracker again immediately. The reported rate should stay the same.
|
|
EXPECT_EQ(1234U * 2, tracker.total_units());
|
|
EXPECT_EQ(1234U * 2, tracker.units_second());
|
|
|
|
// Do nothing and advance by a second. We should drop down to zero.
|
|
tracker.AdvanceTime(1000);
|
|
EXPECT_EQ(1234U * 2, tracker.total_units());
|
|
EXPECT_EQ(0U, tracker.units_second());
|
|
|
|
// 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.Update(9876U);
|
|
tracker.AdvanceTime(100);
|
|
}
|
|
EXPECT_EQ(9876U * 10, tracker.units_second());
|
|
|
|
// 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.units_second());
|
|
}
|
|
|
|
} // namespace talk_base
|