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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/metrics/usage_scenario/chrome_responsiveness_calculator_delegate.h"
#include "base/test/metrics/histogram_tester.h"
#include "chrome/browser/metrics/usage_scenario/usage_scenario_data_store.h"
#include "testing/gtest/include/gtest/gtest.h"
class ChromeResponsivenessCalculatorDelegateTest : public testing::Test {
public:
ChromeResponsivenessCalculatorDelegateTest()
: delegate_(ChromeResponsivenessCalculatorDelegate::CreateForTesting(
&data_store_)) {}
~ChromeResponsivenessCalculatorDelegateTest() override = default;
protected:
base::HistogramTester histogram_tester_;
UsageScenarioDataStoreImpl data_store_;
std::unique_ptr<ChromeResponsivenessCalculatorDelegate> delegate_;
};
// Tests that the right usage scenario suffix is added. Usage scenario suffixes
// are already extensively tested in usage_scenario_unittest.cc so no need to
// test them all.
TEST_F(ChromeResponsivenessCalculatorDelegateTest, Navigation) {
// Pretend a navigation happened in the current interval.
data_store_.OnTabAdded();
data_store_.OnWindowVisible();
data_store_.OnTopLevelNavigation();
// Emit a "10" sample.
delegate_->OnMeasurementIntervalEnded();
delegate_->OnResponsivenessEmitted(10, 0, 50, 50);
histogram_tester_.ExpectUniqueSample(
"Browser.MainThreadsCongestion.Navigation", 10, 1);
}
// Tests that `OnResponsivenessEmitted()` only consider the last interval by
// calling `OnMeasurementIntervalEnded()` twice.
TEST_F(ChromeResponsivenessCalculatorDelegateTest, OnMeasurementIntervalEnded) {
// Pretend a navigation happened in the current interval.
data_store_.OnTabAdded();
data_store_.OnWindowVisible();
data_store_.OnTopLevelNavigation();
// Reset the current interval.
delegate_->OnMeasurementIntervalEnded();
// Emit a "10" sample.
delegate_->OnMeasurementIntervalEnded();
delegate_->OnResponsivenessEmitted(10, 0, 50, 50);
// The "Navigation" suffix should take priority over the "Passive" suffix if
// the interval data was not reset with the first call to
// OnMeasurementIntervalEnded()
histogram_tester_.ExpectUniqueSample("Browser.MainThreadsCongestion.Passive",
10, 1);
}
TEST_F(ChromeResponsivenessCalculatorDelegateTest, UsedScenario) {
// First interval. Not visible so there should not be any samples.
delegate_->OnMeasurementIntervalEnded();
delegate_->OnResponsivenessEmitted(10, 0, 50, 50);
histogram_tester_.ExpectUniqueSample("Browser.MainThreadsCongestion.Used", 10,
0);
// Second interval. With a visible window so a sample will be emitted.
data_store_.OnTabAdded();
data_store_.OnWindowVisible();
delegate_->OnMeasurementIntervalEnded();
delegate_->OnResponsivenessEmitted(10, 0, 50, 50);
histogram_tester_.ExpectUniqueSample("Browser.MainThreadsCongestion.Used", 10,
1);
}
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