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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ash/metrics/task_switch_metrics_recorder.h"
#include <memory>
#include "base/test/metrics/histogram_tester.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace ash {
namespace {
// Test fixture for the TaskSwitchMetricsRecorder class.
class TaskSwitchMetricsRecorderTest : public testing::Test {
public:
TaskSwitchMetricsRecorderTest();
TaskSwitchMetricsRecorderTest(const TaskSwitchMetricsRecorderTest&) = delete;
TaskSwitchMetricsRecorderTest& operator=(
const TaskSwitchMetricsRecorderTest&) = delete;
~TaskSwitchMetricsRecorderTest() override;
// Wrapper to the test targets OnTaskSwitch(TaskSwitchSource) method.
void OnTaskSwitch(TaskSwitchSource task_switch_source);
// testing::Test:
void SetUp() override;
void TearDown() override;
protected:
// Used to verify recorded data.
std::unique_ptr<base::HistogramTester> histogram_tester_;
// The test target.
std::unique_ptr<TaskSwitchMetricsRecorder> task_switch_metrics_recorder_;
};
TaskSwitchMetricsRecorderTest::TaskSwitchMetricsRecorderTest() = default;
TaskSwitchMetricsRecorderTest::~TaskSwitchMetricsRecorderTest() = default;
void TaskSwitchMetricsRecorderTest::OnTaskSwitch(
TaskSwitchSource task_switch_source) {
task_switch_metrics_recorder_->OnTaskSwitch(task_switch_source);
}
void TaskSwitchMetricsRecorderTest::SetUp() {
testing::Test::SetUp();
histogram_tester_ = std::make_unique<base::HistogramTester>();
task_switch_metrics_recorder_ = std::make_unique<TaskSwitchMetricsRecorder>();
}
void TaskSwitchMetricsRecorderTest::TearDown() {
testing::Test::TearDown();
histogram_tester_.reset();
task_switch_metrics_recorder_.reset();
}
} // namespace
// Verifies that the TaskSwitchSource::WINDOW_CYCLE_CONTROLLER source
// adds data to the Ash.WindowCycleController.TimeBetweenTaskSwitches histogram.
TEST_F(TaskSwitchMetricsRecorderTest,
VerifyTaskSwitchesForWindowCycleControllerAreRecorded) {
const std::string kHistogramName =
"Ash.WindowCycleController.TimeBetweenTaskSwitches";
OnTaskSwitch(TaskSwitchSource::WINDOW_CYCLE_CONTROLLER);
OnTaskSwitch(TaskSwitchSource::WINDOW_CYCLE_CONTROLLER);
histogram_tester_->ExpectTotalCount(kHistogramName, 1);
OnTaskSwitch(TaskSwitchSource::WINDOW_CYCLE_CONTROLLER);
histogram_tester_->ExpectTotalCount(kHistogramName, 2);
}
// Verifies that the TaskSwitchSource::OVERVIEW_MODE source adds data
// to the Ash.Overview.TimeBetweenActiveWindowChanges histogram.
TEST_F(TaskSwitchMetricsRecorderTest,
VerifyTaskSwitchesFromOverviewModeAreRecorded) {
const std::string kHistogramName =
"Ash.Overview.TimeBetweenActiveWindowChanges";
OnTaskSwitch(TaskSwitchSource::OVERVIEW_MODE);
OnTaskSwitch(TaskSwitchSource::OVERVIEW_MODE);
histogram_tester_->ExpectTotalCount(kHistogramName, 1);
OnTaskSwitch(TaskSwitchSource::OVERVIEW_MODE);
histogram_tester_->ExpectTotalCount(kHistogramName, 2);
}
} // namespace ash
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