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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/metrics/frame_sequence_metrics.h"
#include <utility>
#include "base/test/metrics/histogram_tester.h"
#include "cc/metrics/frame_sequence_tracker.h"
#include "components/ukm/test_ukm_recorder.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace cc {
class FrameSequenceMetricsTest : public testing::Test {
public:
FrameSequenceMetricsTest() = default;
~FrameSequenceMetricsTest() override = default;
void SetFramesExpectedAndProduced(FrameSequenceMetrics& metrics,
uint32_t frames_expected,
uint32_t frames_dropped);
};
void FrameSequenceMetricsTest::SetFramesExpectedAndProduced(
FrameSequenceMetrics& metrics,
uint32_t frames_expected,
uint32_t frames_dropped) {
metrics.v3_.frames_expected = frames_expected;
metrics.v3_.frames_dropped = frames_dropped;
}
TEST_F(FrameSequenceMetricsTest, MergeMetrics) {
// Create a metric with only a small number of frames. It shouldn't report any
// metrics.
FrameSequenceMetrics first(FrameSequenceTrackerType::kTouchScroll);
SetFramesExpectedAndProduced(first, 20u, 10u);
EXPECT_FALSE(first.HasEnoughDataForReporting());
// Create a second metric with too few frames to report any metrics.
auto second = std::make_unique<FrameSequenceMetrics>(
FrameSequenceTrackerType::kTouchScroll);
SetFramesExpectedAndProduced(*second, 90u, 30u);
EXPECT_FALSE(second->HasEnoughDataForReporting());
// Merge the two metrics. The result should have enough frames to report
// metrics.
first.Merge(std::move(second));
EXPECT_TRUE(first.HasEnoughDataForReporting());
}
#if DCHECK_IS_ON()
TEST_F(FrameSequenceMetricsTest, ScrollingThreadMergeMetrics) {
FrameSequenceMetrics first(FrameSequenceTrackerType::kTouchScroll);
first.SetScrollingThread(FrameInfo::SmoothEffectDrivingThread::kCompositor);
SetFramesExpectedAndProduced(first, 20u, 10u);
auto second = std::make_unique<FrameSequenceMetrics>(
FrameSequenceTrackerType::kTouchScroll);
SetFramesExpectedAndProduced(*second, 50u, 40u);
second->SetScrollingThread(FrameInfo::SmoothEffectDrivingThread::kMain);
ASSERT_DEATH_IF_SUPPORTED(first.Merge(std::move(second)), "");
}
#endif // DCHECK_IS_ON()
TEST_F(FrameSequenceMetricsTest, CheckerboardingMetricV4EmitsValidValue) {
// Tests historical DCHECK histogram metric array bound check
// crash condition (crbug.com/373811619).
base::HistogramTester histograms;
// Create a metric with raster impl frames.
FrameSequenceMetrics first(FrameSequenceTrackerType::kTouchScroll);
SetFramesExpectedAndProduced(first, 300u, 10u);
first.SetScrollingThread(FrameInfo::SmoothEffectDrivingThread::kCompositor);
EXPECT_TRUE(first.HasEnoughDataForReporting());
first.ReportMetrics();
auto second = std::make_unique<FrameSequenceMetrics>(
FrameSequenceTrackerType::kTouchScroll);
SetFramesExpectedAndProduced(*second, 150u, 40u);
second->SetScrollingThread(FrameInfo::SmoothEffectDrivingThread::kMain);
second->ReportMetrics();
// Checkerboarding V4 should be reported per-thread.
histograms.ExpectTotalCount(
"Graphics.Smoothness.Checkerboarding4.MainThread.TouchScroll", 1u);
histograms.ExpectTotalCount(
"Graphics.Smoothness.Checkerboarding4.CompositorThread.TouchScroll", 1u);
}
} // namespace cc
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