| // Copyright 2017 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 "chrome/browser/page_load_metrics/observers/multi_tab_loading_page_load_metrics_observer.h" |
| |
| #include <memory> |
| |
| #include "base/optional.h" |
| #include "chrome/browser/page_load_metrics/observers/histogram_suffixes.h" |
| #include "chrome/browser/page_load_metrics/observers/page_load_metrics_observer_test_harness.h" |
| #include "components/page_load_metrics/browser/page_load_tracker.h" |
| #include "components/page_load_metrics/common/test/page_load_metrics_test_util.h" |
| #include "content/public/browser/web_contents.h" |
| |
| namespace { |
| |
| const char kDefaultTestUrl[] = "https://google.com"; |
| |
| class TestMultiTabLoadingPageLoadMetricsObserver |
| : public MultiTabLoadingPageLoadMetricsObserver { |
| public: |
| explicit TestMultiTabLoadingPageLoadMetricsObserver( |
| int number_of_tabs_with_inflight_load) |
| : number_of_tabs_with_inflight_load_(number_of_tabs_with_inflight_load) {} |
| ~TestMultiTabLoadingPageLoadMetricsObserver() override {} |
| |
| private: |
| int NumberOfTabsWithInflightLoad( |
| content::NavigationHandle* navigation_handle) override { |
| return number_of_tabs_with_inflight_load_; |
| } |
| |
| const int number_of_tabs_with_inflight_load_; |
| }; |
| |
| } // namespace |
| |
| class MultiTabLoadingPageLoadMetricsObserverTest |
| : public page_load_metrics::PageLoadMetricsObserverTestHarness { |
| public: |
| enum TabState { Foreground, Background }; |
| |
| void SimulatePageLoad(int number_of_tabs_with_inflight_load, |
| TabState tab_state) { |
| number_of_tabs_with_inflight_load_ = number_of_tabs_with_inflight_load; |
| |
| page_load_metrics::mojom::PageLoadTiming timing; |
| page_load_metrics::InitPageLoadTimingForTest(&timing); |
| timing.navigation_start = base::Time::FromDoubleT(1); |
| timing.paint_timing->first_contentful_paint = |
| base::TimeDelta::FromMilliseconds(300); |
| timing.paint_timing->first_meaningful_paint = |
| base::TimeDelta::FromMilliseconds(700); |
| timing.document_timing->dom_content_loaded_event_start = |
| base::TimeDelta::FromMilliseconds(600); |
| timing.document_timing->load_event_start = |
| base::TimeDelta::FromMilliseconds(1000); |
| PopulateRequiredTimingFields(&timing); |
| |
| if (tab_state == Background) { |
| // Start in background. |
| web_contents()->WasHidden(); |
| } |
| |
| NavigateAndCommit(GURL(kDefaultTestUrl)); |
| |
| if (tab_state == Background) { |
| // Foreground the tab. |
| web_contents()->WasShown(); |
| } |
| |
| tester()->SimulateTimingUpdate(timing); |
| } |
| |
| protected: |
| void RegisterObservers(page_load_metrics::PageLoadTracker* tracker) override { |
| tracker->AddObserver( |
| std::make_unique<TestMultiTabLoadingPageLoadMetricsObserver>( |
| number_of_tabs_with_inflight_load_.value())); |
| } |
| |
| void ValidateHistograms(const char* suffix, |
| base::HistogramBase::Count expected_base, |
| base::HistogramBase::Count expected_2_or_more, |
| base::HistogramBase::Count expected_5_or_more) { |
| tester()->histogram_tester().ExpectTotalCount( |
| std::string(internal::kHistogramPrefixMultiTabLoading).append(suffix), |
| expected_base); |
| tester()->histogram_tester().ExpectTotalCount( |
| std::string(internal::kHistogramPrefixMultiTabLoading2OrMore) |
| .append(suffix), |
| expected_2_or_more); |
| tester()->histogram_tester().ExpectTotalCount( |
| std::string(internal::kHistogramPrefixMultiTabLoading5OrMore) |
| .append(suffix), |
| expected_5_or_more); |
| } |
| |
| private: |
| base::Optional<int> number_of_tabs_with_inflight_load_; |
| }; |
| |
| TEST_F(MultiTabLoadingPageLoadMetricsObserverTest, SingleTabLoading) { |
| SimulatePageLoad(0, Foreground); |
| |
| ValidateHistograms(internal::kHistogramFirstContentfulPaintSuffix, 0, 0, 0); |
| ValidateHistograms(internal::kHistogramForegroundToFirstContentfulPaintSuffix, |
| 0, 0, 0); |
| ValidateHistograms(internal::kHistogramFirstMeaningfulPaintSuffix, 0, 0, 0); |
| ValidateHistograms(internal::kHistogramForegroundToFirstMeaningfulPaintSuffix, |
| 0, 0, 0); |
| ValidateHistograms(internal::kHistogramDOMContentLoadedEventFiredSuffix, 0, 0, |
| 0); |
| ValidateHistograms( |
| internal::kHistogramDOMContentLoadedEventFiredBackgroundSuffix, 0, 0, 0); |
| ValidateHistograms(internal::kHistogramLoadEventFiredSuffix, 0, 0, 0); |
| ValidateHistograms(internal::kHistogramLoadEventFiredBackgroundSuffix, 0, 0, |
| 0); |
| } |
| |
| TEST_F(MultiTabLoadingPageLoadMetricsObserverTest, MultiTabLoading1) { |
| SimulatePageLoad(1, Foreground); |
| |
| ValidateHistograms(internal::kHistogramFirstContentfulPaintSuffix, 1, 0, 0); |
| ValidateHistograms(internal::kHistogramForegroundToFirstContentfulPaintSuffix, |
| 0, 0, 0); |
| ValidateHistograms(internal::kHistogramFirstMeaningfulPaintSuffix, 1, 0, 0); |
| ValidateHistograms(internal::kHistogramForegroundToFirstMeaningfulPaintSuffix, |
| 0, 0, 0); |
| ValidateHistograms(internal::kHistogramDOMContentLoadedEventFiredSuffix, 1, 0, |
| 0); |
| ValidateHistograms( |
| internal::kHistogramDOMContentLoadedEventFiredBackgroundSuffix, 0, 0, 0); |
| ValidateHistograms(internal::kHistogramLoadEventFiredSuffix, 1, 0, 0); |
| ValidateHistograms(internal::kHistogramLoadEventFiredBackgroundSuffix, 0, 0, |
| 0); |
| } |
| |
| TEST_F(MultiTabLoadingPageLoadMetricsObserverTest, MultiTabLoading2) { |
| SimulatePageLoad(2, Foreground); |
| |
| ValidateHistograms(internal::kHistogramFirstContentfulPaintSuffix, 1, 1, 0); |
| ValidateHistograms(internal::kHistogramForegroundToFirstContentfulPaintSuffix, |
| 0, 0, 0); |
| ValidateHistograms(internal::kHistogramFirstMeaningfulPaintSuffix, 1, 1, 0); |
| ValidateHistograms(internal::kHistogramForegroundToFirstMeaningfulPaintSuffix, |
| 0, 0, 0); |
| ValidateHistograms(internal::kHistogramDOMContentLoadedEventFiredSuffix, 1, 1, |
| 0); |
| ValidateHistograms( |
| internal::kHistogramDOMContentLoadedEventFiredBackgroundSuffix, 0, 0, 0); |
| ValidateHistograms(internal::kHistogramLoadEventFiredSuffix, 1, 1, 0); |
| ValidateHistograms(internal::kHistogramLoadEventFiredBackgroundSuffix, 0, 0, |
| 0); |
| } |
| |
| TEST_F(MultiTabLoadingPageLoadMetricsObserverTest, MultiTabLoading5) { |
| SimulatePageLoad(5, Foreground); |
| |
| ValidateHistograms(internal::kHistogramFirstContentfulPaintSuffix, 1, 1, 1); |
| ValidateHistograms(internal::kHistogramForegroundToFirstContentfulPaintSuffix, |
| 0, 0, 0); |
| ValidateHistograms(internal::kHistogramFirstMeaningfulPaintSuffix, 1, 1, 1); |
| ValidateHistograms(internal::kHistogramForegroundToFirstMeaningfulPaintSuffix, |
| 0, 0, 0); |
| ValidateHistograms(internal::kHistogramDOMContentLoadedEventFiredSuffix, 1, 1, |
| 1); |
| ValidateHistograms( |
| internal::kHistogramDOMContentLoadedEventFiredBackgroundSuffix, 0, 0, 0); |
| ValidateHistograms(internal::kHistogramLoadEventFiredSuffix, 1, 1, 1); |
| ValidateHistograms(internal::kHistogramLoadEventFiredBackgroundSuffix, 0, 0, |
| 0); |
| } |
| |
| TEST_F(MultiTabLoadingPageLoadMetricsObserverTest, MultiTabBackground) { |
| SimulatePageLoad(1, Background); |
| |
| ValidateHistograms(internal::kHistogramFirstContentfulPaintSuffix, 0, 0, 0); |
| ValidateHistograms(internal::kHistogramForegroundToFirstContentfulPaintSuffix, |
| 1, 0, 0); |
| ValidateHistograms(internal::kHistogramFirstMeaningfulPaintSuffix, 0, 0, 0); |
| ValidateHistograms(internal::kHistogramForegroundToFirstMeaningfulPaintSuffix, |
| 1, 0, 0); |
| ValidateHistograms(internal::kHistogramDOMContentLoadedEventFiredSuffix, 0, 0, |
| 0); |
| ValidateHistograms( |
| internal::kHistogramDOMContentLoadedEventFiredBackgroundSuffix, 1, 0, 0); |
| ValidateHistograms(internal::kHistogramLoadEventFiredSuffix, 0, 0, 0); |
| ValidateHistograms(internal::kHistogramLoadEventFiredBackgroundSuffix, 1, 0, |
| 0); |
| } |