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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "remoting/host/backoff_timer.h"
#include "base/timer/mock_timer.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace remoting {
namespace {
void IncrementCounter(int* counter) {
++(*counter);
}
} // namespace
TEST(BackoffTimer, Basic) {
base::MockTimer* mock_timer = new base::MockTimer(false, false);
BackoffTimer backoff_timer;
backoff_timer.SetTimerForTest(make_scoped_ptr(mock_timer));
ASSERT_FALSE(backoff_timer.IsRunning());
int counter = 0;
backoff_timer.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(10),
base::TimeDelta::FromMilliseconds(50),
base::Bind(&IncrementCounter, &counter));
ASSERT_TRUE(backoff_timer.IsRunning());
ASSERT_EQ(0, counter);
ASSERT_NEAR(0, mock_timer->GetCurrentDelay().InMillisecondsF(), 1);
mock_timer->Fire();
ASSERT_TRUE(backoff_timer.IsRunning());
ASSERT_EQ(1, counter);
EXPECT_NEAR(10, mock_timer->GetCurrentDelay().InMillisecondsF(), 1);
mock_timer->Fire();
ASSERT_TRUE(backoff_timer.IsRunning());
ASSERT_EQ(2, counter);
EXPECT_NEAR(20, mock_timer->GetCurrentDelay().InMillisecondsF(), 1);
mock_timer->Fire();
ASSERT_TRUE(backoff_timer.IsRunning());
ASSERT_EQ(3, counter);
EXPECT_NEAR(40, mock_timer->GetCurrentDelay().InMillisecondsF(), 1);
mock_timer->Fire();
ASSERT_TRUE(backoff_timer.IsRunning());
ASSERT_EQ(4, counter);
EXPECT_NEAR(50, mock_timer->GetCurrentDelay().InMillisecondsF(), 1);
mock_timer->Fire();
ASSERT_TRUE(backoff_timer.IsRunning());
ASSERT_EQ(5, counter);
EXPECT_NEAR(50, mock_timer->GetCurrentDelay().InMillisecondsF(), 1);
backoff_timer.Stop();
ASSERT_FALSE(backoff_timer.IsRunning());
}
} // namespace remoting
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