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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <vector>
#include "base/metrics/histogram_base.h"
#include "base/metrics/histogram_samples.h"
#include "base/metrics/statistics_recorder.h"
#include "base/run_loop.h"
#include "base/test/bind.h"
#include "build/branding_buildflags.h"
#include "build/build_config.h"
#include "chrome/test/base/platform_browser_test.h"
#include "components/startup_metric_utils/browser/startup_metric_utils.h"
#include "content/public/test/browser_test.h"
#if BUILDFLAG(IS_ANDROID)
#include "base/android/build_info.h"
#endif
using StartupMetricsTest = PlatformBrowserTest;
namespace {
constexpr const char* kStartupMetrics[] = {
"Startup.BrowserMessageLoopFirstIdle",
"Startup.BrowserMessageLoopStartTime",
// Desktop specific metrics
#if !BUILDFLAG(IS_ANDROID)
"Startup.BrowserMessageLoopStart.To.NonEmptyPaint2",
"Startup.BrowserWindow.FirstPaint",
"Startup.BrowserWindowDisplay",
"Startup.FirstWebContents.MainNavigationFinished",
"Startup.FirstWebContents.MainNavigationStart",
"Startup.FirstWebContents.NonEmptyPaint3",
#endif // !BUILDFLAG(IS_ANDROID)
#if BUILDFLAG(IS_WIN)
"Startup.BrowserMessageLoopStartHardFaultCount",
"Startup.Temperature",
#endif
};
void AddProcessCreateMetrics(std::vector<const char*>& v) {
v.push_back("Startup.LoadTime.ProcessCreateToApplicationStart");
v.push_back("Startup.LoadTime.ApplicationStartToChromeMain");
}
} // namespace
// Verify that startup histograms are logged on browser startup.
// TODO(crbug.com/40919406): Re-enable this test
#if BUILDFLAG(IS_WIN) && defined(ARCH_CPU_X86_64)
#define MAYBE_ReportsValues DISABLED_ReportsValues
#else
#define MAYBE_ReportsValues ReportsValues
#endif
IN_PROC_BROWSER_TEST_F(StartupMetricsTest, MAYBE_ReportsValues) {
std::vector<const char*> startup_metrics{std::begin(kStartupMetrics),
std::end(kStartupMetrics)};
#if !BUILDFLAG(IS_ANDROID)
AddProcessCreateMetrics(startup_metrics);
#else
// On Android these metrics are based on Process.getStartUptimeMillis() - not
// available before N.
if (base::android::BuildInfo::GetInstance()->sdk_int() >=
base::android::SDK_VERSION_NOUGAT) {
AddProcessCreateMetrics(startup_metrics);
}
#endif // BUILDFLAG(IS_ANDROID)
// Wait for all histograms to be recorded. The test will hit a RunLoop timeout
// if a histogram is not recorded.
for (auto* const histogram : startup_metrics) {
SCOPED_TRACE(histogram);
// Continue if histograms was already recorded.
if (base::StatisticsRecorder::FindHistogram(histogram)) {
continue;
}
// Else, wait until the histogram is recorded.
base::RunLoop run_loop;
auto histogram_observer = std::make_unique<
base::StatisticsRecorder::ScopedHistogramSampleObserver>(
histogram, run_loop.QuitClosure());
run_loop.Run();
}
}
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