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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 "chrome/browser/tracing/chrome_background_tracing_metrics_provider.h"
#include <utility>
#include "base/barrier_closure.h"
#include "base/functional/bind.h"
#include "base/run_loop.h"
#include "base/test/bind.h"
#include "build/build_config.h"
#include "chrome/browser/tracing/chrome_tracing_delegate.h"
#include "chrome/test/base/scoped_testing_local_state.h"
#include "chrome/test/base/testing_browser_process.h"
#include "content/public/browser/background_tracing_manager.h"
#include "content/public/test/background_tracing_test_support.h"
#include "content/public/test/browser_task_environment.h"
#include "services/tracing/public/cpp/trace_startup_config.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/metrics_proto/chrome_user_metrics_extension.pb.h"
#include "third_party/metrics_proto/trace_log.pb.h"
#include "third_party/zlib/google/compression_utils.h"
#if BUILDFLAG(IS_CHROMEOS)
// "nogncheck" because of crbug.com/1125897.
#include "chrome/browser/ash/login/demo_mode/demo_session.h"
#include "chrome/browser/metrics/chromeos_system_profile_provider.h"
#include "chromeos/ash/components/login/login_state/login_state.h"
#include "chromeos/ash/components/system/fake_statistics_provider.h"
#include "chromeos/dbus/power/power_manager_client.h"
#include "chromeos/dbus/tpm_manager/tpm_manager_client.h" // nogncheck
#endif // BUILDFLAG(IS_CHROMEOS)
namespace tracing {
namespace {
const char kDummyTrace[] = "Trace bytes as serialized proto";
class TestBackgroundTracingHelper
: public content::BackgroundTracingManager::EnabledStateTestObserver {
public:
TestBackgroundTracingHelper() {
content::AddBackgroundTracingEnabledStateObserverForTesting(this);
}
~TestBackgroundTracingHelper() {
content::RemoveBackgroundTracingEnabledStateObserverForTesting(this);
}
void OnTraceSaved() override { wait_for_trace_saved_.Quit(); }
void WaitForTraceSaved() { wait_for_trace_saved_.Run(); }
private:
base::RunLoop wait_for_trace_saved_;
};
} // namespace
class ChromeBackgroundTracingMetricsProviderTest : public testing::Test {
public:
ChromeBackgroundTracingMetricsProviderTest()
: background_tracing_manager_(
content::BackgroundTracingManager::CreateInstance(
&tracing_delegate_)),
local_state_(TestingBrowserProcess::GetGlobal()) {}
private:
content::BrowserTaskEnvironment task_environment_;
ChromeTracingDelegate tracing_delegate_;
std::unique_ptr<content::BackgroundTracingManager>
background_tracing_manager_;
ScopedTestingLocalState local_state_;
};
TEST_F(ChromeBackgroundTracingMetricsProviderTest, NoTraceData) {
ChromeBackgroundTracingMetricsProvider provider(nullptr);
ASSERT_FALSE(provider.HasIndependentMetrics());
}
TEST_F(ChromeBackgroundTracingMetricsProviderTest, UploadsTraceLog) {
TestBackgroundTracingHelper background_tracing_helper;
ChromeBackgroundTracingMetricsProvider provider(nullptr);
EXPECT_FALSE(provider.HasIndependentMetrics());
content::BackgroundTracingManager::GetInstance().SaveTraceForTesting(
kDummyTrace, "test_scenario", "test_rule", base::Token::CreateRandom());
background_tracing_helper.WaitForTraceSaved();
EXPECT_TRUE(provider.HasIndependentMetrics());
metrics::ChromeUserMetricsExtension uma_proto;
uma_proto.set_client_id(100);
uma_proto.set_session_id(15);
base::RunLoop run_loop;
provider.ProvideIndependentMetrics(
base::DoNothing(), base::BindLambdaForTesting([&run_loop](bool success) {
EXPECT_TRUE(success);
run_loop.Quit();
}),
&uma_proto,
/* snapshot_manager=*/nullptr);
run_loop.Run();
EXPECT_EQ(100u, uma_proto.client_id());
EXPECT_EQ(15, uma_proto.session_id());
ASSERT_EQ(1, uma_proto.trace_log_size());
EXPECT_EQ(metrics::TraceLog::COMPRESSION_TYPE_ZLIB,
uma_proto.trace_log(0).compression_type());
std::string serialize_trace;
ASSERT_TRUE(compression::GzipUncompress(uma_proto.trace_log(0).raw_data(),
&serialize_trace));
EXPECT_EQ(kDummyTrace, serialize_trace);
EXPECT_FALSE(provider.HasIndependentMetrics());
}
TEST_F(ChromeBackgroundTracingMetricsProviderTest, HandleMissingTrace) {
ChromeBackgroundTracingMetricsProvider provider(nullptr);
EXPECT_FALSE(provider.HasIndependentMetrics());
metrics::ChromeUserMetricsExtension uma_proto;
uma_proto.set_client_id(100);
uma_proto.set_session_id(15);
provider.ProvideIndependentMetrics(
base::DoNothing(),
base::BindOnce([](bool success) { EXPECT_FALSE(success); }), &uma_proto,
/* snapshot_manager=*/nullptr);
EXPECT_EQ(100u, uma_proto.client_id());
EXPECT_EQ(15, uma_proto.session_id());
EXPECT_EQ(0, uma_proto.trace_log_size());
EXPECT_FALSE(provider.HasIndependentMetrics());
}
#if BUILDFLAG(IS_CHROMEOS)
class ChromeBackgroundTracingMetricsProviderChromeOSTest
: public ChromeBackgroundTracingMetricsProviderTest {
public:
// ChromeBackgroundTracingMetricsProviderTest:
void SetUp() override {
ChromeBackgroundTracingMetricsProviderTest::SetUp();
// ChromeOSSystemProfileProvider needs the following to provide system
// profile meta.
chromeos::PowerManagerClient::InitializeFake();
chromeos::TpmManagerClient::InitializeFake();
ash::DemoSession::SetDemoConfigForTesting(
ash::DemoSession::DemoModeConfig::kNone);
ash::LoginState::Initialize();
}
void TearDown() override {
ChromeBackgroundTracingMetricsProviderTest::TearDown();
ash::LoginState::Shutdown();
ash::DemoSession::ResetDemoConfigForTesting();
chromeos::TpmManagerClient::Shutdown();
chromeos::PowerManagerClient::Shutdown();
}
};
TEST_F(ChromeBackgroundTracingMetricsProviderChromeOSTest, HardwareClass) {
// Set a fake hardware class.
constexpr char kFakeHardwareClass[] = "Fake hardware class";
ash::system::ScopedFakeStatisticsProvider fake_statistics_provider;
fake_statistics_provider.SetMachineStatistic("hardware_class",
kFakeHardwareClass);
auto system_profile_provider =
std::make_unique<ChromeOSSystemProfileProvider>();
ChromeBackgroundTracingMetricsProvider provider(
system_profile_provider.get());
provider.Init();
// AsyncInit needs to happen to collect `hardware_class` etc.
{
base::RunLoop run_loop;
base::RepeatingClosure barrier =
base::BarrierClosure(2, run_loop.QuitWhenIdleClosure());
provider.AsyncInit(barrier);
system_profile_provider->AsyncInit(barrier);
run_loop.Run();
}
TestBackgroundTracingHelper background_tracing_helper;
// Fake a UMA collection for background tracing.
content::BackgroundTracingManager::GetInstance().SaveTraceForTesting(
kDummyTrace, "test_scenario", "test_rule", base::Token::CreateRandom());
background_tracing_helper.WaitForTraceSaved();
ASSERT_TRUE(provider.HasIndependentMetrics());
metrics::ChromeUserMetricsExtension uma_proto;
{
base::RunLoop run_loop;
provider.ProvideIndependentMetrics(
base::DoNothing(), base::BindLambdaForTesting([&](bool success) {
EXPECT_TRUE(success);
run_loop.Quit();
}),
&uma_proto,
/* snapshot_manager=*/nullptr);
run_loop.Run();
}
// Verify `hardware_class` is collected correctly.
ASSERT_EQ(1, uma_proto.trace_log_size());
const metrics::SystemProfileProto& system_profile =
uma_proto.system_profile();
const metrics::SystemProfileProto::Hardware& hardware =
system_profile.hardware();
EXPECT_EQ(kFakeHardwareClass, hardware.full_hardware_class());
EXPECT_FALSE(provider.HasIndependentMetrics());
}
#endif
} // namespace tracing
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