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// Copyright 2020 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 "base/test/bind.h"
#include "base/test/metrics/histogram_tester.h"
#include "build/build_config.h"
#include "components/page_load_metrics/browser/page_load_metrics_observer.h"
#include "components/page_load_metrics/browser/page_load_tracker.h"
#include "net/test/embedded_test_server/embedded_test_server.h"
#include "weblayer/browser/page_load_metrics_initialize.h"
#include "weblayer/browser/profile_impl.h"
#include "weblayer/test/weblayer_browser_test.h"
#include "weblayer/test/weblayer_browser_test_utils.h"
namespace weblayer {
using PageLoadMetricsBrowserTest = WebLayerBrowserTest;
class PageLoadMetricsObserver
: public page_load_metrics::PageLoadMetricsObserver {
public:
explicit PageLoadMetricsObserver(base::RepeatingClosure quit_closure)
: quit_closure_(quit_closure) {}
~PageLoadMetricsObserver() override = default;
// page_load_metrics::PageLoadMetricsObserver implementation:
void OnFirstPaintInPage(
const page_load_metrics::mojom::PageLoadTiming& timing) override {
on_first_paint_seen_ = true;
QuitRunLoopIfReady();
}
void OnFirstContentfulPaintInPage(
const page_load_metrics::mojom::PageLoadTiming& timing) override {
on_first_contentful_paint_seen_ = true;
QuitRunLoopIfReady();
}
private:
void QuitRunLoopIfReady() {
if (on_first_paint_seen_ && on_first_contentful_paint_seen_)
quit_closure_.Run();
}
bool on_first_paint_seen_ = false;
bool on_first_contentful_paint_seen_ = false;
base::RepeatingClosure quit_closure_;
};
IN_PROC_BROWSER_TEST_F(PageLoadMetricsBrowserTest, Heartbeat) {
base::HistogramTester histogram_tester;
ASSERT_TRUE(embedded_test_server()->Start());
base::RunLoop run_loop;
auto callback = base::BindLambdaForTesting(
[&](page_load_metrics::PageLoadTracker* tracker) {
tracker->AddObserver(
std::make_unique<PageLoadMetricsObserver>(run_loop.QuitClosure()));
// Don't need this anymore
SetRegisterEmbedderObserversForTesting(nullptr);
});
SetRegisterEmbedderObserversForTesting(&callback);
NavigateAndWaitForCompletion(
embedded_test_server()->GetURL("/simple_page.html"), shell());
run_loop.Run();
// Look for prefix because on Android the name would be different if the tab
// is not in foreground initially. This seems to happen on a slow test bot.
EXPECT_GE(histogram_tester
.GetTotalCountsForPrefix(
"PageLoad.PaintTiming.NavigationToFirstPaint")
.size(),
1u);
EXPECT_GE(histogram_tester
.GetTotalCountsForPrefix(
"PageLoad.PaintTiming.NavigationToFirstContentfulPaint")
.size(),
1u);
}
IN_PROC_BROWSER_TEST_F(PageLoadMetricsBrowserTest, UserCounter) {
base::HistogramTester histogram_tester;
ASSERT_TRUE(embedded_test_server()->Start());
NavigateAndWaitForCompletion(embedded_test_server()->GetURL("/form.html"),
shell());
NavigateAndWaitForCompletion(GURL("about:blank"), shell()); // Flush.
histogram_tester.ExpectBucketCount("Blink.UseCounter.MainFrame.Features",
blink::mojom::WebFeature::kPageVisits, 1);
histogram_tester.ExpectBucketCount("Blink.UseCounter.Features",
blink::mojom::WebFeature::kFormElement, 1);
}
} // namespace weblayer
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