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// Copyright 2024 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/constants/ash_pref_names.h"
#include "ash/test/ash_test_util.h"
#include "ash/wm/window_restore/window_restore_util.h"
#include "base/check.h"
#include "base/functional/callback.h"
#include "base/location.h"
#include "base/memory/raw_ptr.h"
#include "base/run_loop.h"
#include "base/test/metrics/histogram_tester.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "chrome/browser/ash/app_restore/app_restore_test_util.h"
#include "chrome/browser/ash/app_restore/full_restore_app_launch_handler.h"
#include "chrome/browser/ash/app_restore/full_restore_service.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_list.h"
#include "chrome/browser/ui/browser_list_observer.h"
#include "chrome/browser/ui/browser_tabstrip.h"
#include "chrome/browser/ui/browser_window.h"
#include "chrome/test/base/in_process_browser_test.h"
#include "components/prefs/pref_service.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/test/browser_test.h"
namespace ash {
namespace {
class FirstNonEmptyPaintObserver : public content::WebContentsObserver {
public:
FirstNonEmptyPaintObserver(base::HistogramTester* histogram_tester,
Browser* browser)
: content::WebContentsObserver(
browser->tab_strip_model()->GetActiveWebContents()),
histogram_tester_(histogram_tester) {
CHECK(histogram_tester_);
}
FirstNonEmptyPaintObserver(const FirstNonEmptyPaintObserver&) = delete;
FirstNonEmptyPaintObserver& operator=(const FirstNonEmptyPaintObserver&) =
delete;
~FirstNonEmptyPaintObserver() override = default;
// Returns true if the first non-empty paint has been received; false if
// timed out.
bool Wait() {
static constexpr base::TimeDelta kTimeout = base::Seconds(10);
// May have already been recorded if the session restore/browser paint
// completed during the test's setup.
if (histogram_tester_->GetTotalSum(
"Startup.FirstWebContents.NonEmptyPaint3") > 0) {
return true;
}
if (is_complete_) {
return true;
}
base::RunLoop run_loop;
quit_closure_ = run_loop.QuitClosure();
base::OneShotTimer timeout;
timeout.Start(FROM_HERE, kTimeout, this,
&FirstNonEmptyPaintObserver::QuitAndTimeout);
run_loop.Run();
quit_closure_.Reset();
return is_complete_;
}
private:
// content::WebContentsObserver:
void DidFirstVisuallyNonEmptyPaint() override {
is_complete_ = true;
if (quit_closure_) {
quit_closure_.Run();
}
}
void QuitAndTimeout() {
CHECK(quit_closure_);
quit_closure_.Run();
}
const raw_ptr<base::HistogramTester> histogram_tester_;
bool is_complete_ = false;
base::RepeatingClosure quit_closure_;
};
class FirstWebContentsProfilerAshTest : public InProcessBrowserTest {
public:
FirstWebContentsProfilerAshTest() { set_launch_browser_for_testing(nullptr); }
FirstWebContentsProfilerAshTest(const FirstWebContentsProfilerAshTest&) =
delete;
FirstWebContentsProfilerAshTest& operator=(
const FirstWebContentsProfilerAshTest&) = delete;
~FirstWebContentsProfilerAshTest() override = default;
void SetUpOnMainThread() override {
InProcessBrowserTest::SetUpOnMainThread();
auto* prefs = ProfileManager::GetActiveUserProfile()->GetPrefs();
prefs->SetInteger(prefs::kRestoreAppsAndPagesPrefName,
static_cast<int>(full_restore::RestoreOption::kAlways));
}
protected:
base::HistogramTester histogram_tester_;
};
// Creates browser window that will be restored in the main test.
IN_PROC_BROWSER_TEST_F(FirstWebContentsProfilerAshTest,
PRE_RecordsFirstWebContentsMetricsOnRestore) {
ASSERT_TRUE(BrowserList::GetInstance()->empty());
FirstNonEmptyPaintObserver first_non_empty_paint_observer(
&histogram_tester_,
CreateBrowser(ProfileManager::GetActiveUserProfile()));
ASSERT_TRUE(first_non_empty_paint_observer.Wait());
// Metrics are not recorded because the browser window is manually
// created not from session restore.
histogram_tester_.ExpectTotalCount("Startup.FirstWebContents.NonEmptyPaint3",
0);
histogram_tester_.ExpectTotalCount("Ash.FirstWebContentsProfile.Recorded", 0);
// Immediate save to full restore file to bypass the 2.5 second throttle.
AppLaunchInfoSaveWaiter::Wait();
}
// Browser window is restored during test setup, so "Startup.FirstWebContents"
// metrics should be recorded.
IN_PROC_BROWSER_TEST_F(FirstWebContentsProfilerAshTest,
RecordsFirstWebContentsMetricsOnRestore) {
ASSERT_TRUE(BrowserList::GetInstance()->GetLastActive());
FirstNonEmptyPaintObserver first_non_empty_paint_observer(
&histogram_tester_, BrowserList::GetInstance()->GetLastActive());
ASSERT_TRUE(first_non_empty_paint_observer.Wait());
histogram_tester_.ExpectTotalCount(
"Startup.FirstWebContents.MainNavigationStart", 1);
histogram_tester_.ExpectTotalCount(
"Startup.FirstWebContents.MainNavigationFinished", 1);
histogram_tester_.ExpectTotalCount("Startup.FirstWebContents.NonEmptyPaint3",
1);
histogram_tester_.ExpectUniqueSample(
"Startup.FirstWebContents.FinishReason",
/*metrics::StartupProfilingFinishReason::kDone*/ 0, 1);
histogram_tester_.ExpectUniqueSample("Ash.FirstWebContentsProfile.Recorded",
true, 1);
}
} // namespace
} // namespace ash
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