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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/dom_distiller/content/browser/uma_helper.h"
#include <string>
#include "base/test/task_environment.h"
#include "base/time/time.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace dom_distiller {
class UMAHelperTest : public testing::Test {
public:
void FastForwardBy(int milliseconds) {
task_environment_.FastForwardBy(base::Milliseconds(milliseconds));
}
protected:
base::test::TaskEnvironment task_environment_{
base::test::TaskEnvironment::TimeSource::MOCK_TIME};
};
TEST_F(UMAHelperTest, TestTimerBasics) {
UMAHelper::DistillabilityDriverTimer timer;
ASSERT_FALSE(timer.HasStarted());
timer.Start(false);
ASSERT_TRUE(timer.HasStarted());
FastForwardBy(100);
ASSERT_EQ(timer.GetElapsedTime().InMilliseconds(), 100);
FastForwardBy(100);
ASSERT_EQ(timer.GetElapsedTime().InMilliseconds(), 200);
// After pausing, the timer should still be running (active), and the
// value should be unchanged.
timer.Pause();
ASSERT_TRUE(timer.HasStarted());
ASSERT_EQ(timer.GetElapsedTime().InMilliseconds(), 200);
// Paused timer shouldn't increase value when time changes.
FastForwardBy(100);
ASSERT_EQ(timer.GetElapsedTime().InMilliseconds(), 200);
// Starting the timer again will cause it to move forward again as time
// changes.
timer.Start(false);
ASSERT_TRUE(timer.HasStarted());
ASSERT_EQ(timer.GetElapsedTime().InMilliseconds(), 200);
FastForwardBy(100);
ASSERT_EQ(timer.GetElapsedTime().InMilliseconds(), 300);
// Pause again, but this time continue with Resume instead of Start. This
// should have the same effect.
timer.Pause();
FastForwardBy(100);
ASSERT_EQ(timer.GetElapsedTime().InMilliseconds(), 300);
timer.Resume();
FastForwardBy(100);
ASSERT_EQ(timer.GetElapsedTime().InMilliseconds(), 400);
// Calling start or pause multiple times in a row does not break anything.
timer.Start(false);
ASSERT_EQ(timer.GetElapsedTime().InMilliseconds(), 400);
FastForwardBy(100);
timer.Start(false);
timer.Start(false);
timer.Resume();
ASSERT_EQ(timer.GetElapsedTime().InMilliseconds(), 500);
timer.Pause();
timer.Pause();
ASSERT_EQ(timer.GetElapsedTime().InMilliseconds(), 500);
// Reset the timer.
timer.Reset();
ASSERT_FALSE(timer.HasStarted());
}
TEST_F(UMAHelperTest, TestTimerForDistilledPage) {
UMAHelper::DistillabilityDriverTimer timer;
timer.Start(true);
ASSERT_TRUE(timer.HasStarted());
FastForwardBy(100);
ASSERT_EQ(timer.GetElapsedTime().InMilliseconds(), 100);
timer.Start(true);
ASSERT_EQ(timer.GetElapsedTime().InMilliseconds(), 100);
}
} // namespace dom_distiller
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