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// 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 "components/metrics/net/network_metrics_provider.h"
#include "base/callback.h"
#include "base/macros.h"
#include "base/run_loop.h"
#include "base/test/scoped_task_environment.h"
#include "base/threading/thread_task_runner_handle.h"
#include "components/metrics/proto/system_profile.pb.h"
#include "net/base/network_change_notifier.h"
#include "net/nqe/network_quality_estimator_test_util.h"
#include "testing/gtest/include/gtest/gtest.h"
#if defined(OS_CHROMEOS)
#include "chromeos/dbus/dbus_thread_manager.h"
#include "chromeos/network/network_handler.h"
#endif // OS_CHROMEOS
namespace metrics {
namespace {
class TestNetworkQualityEstimatorProvider
: public NetworkMetricsProvider::NetworkQualityEstimatorProvider {
public:
explicit TestNetworkQualityEstimatorProvider(
net::TestNetworkQualityEstimator* estimator)
: estimator_(estimator) {}
~TestNetworkQualityEstimatorProvider() override {}
private:
// NetworkMetricsProvider::NetworkQualityEstimatorProvider:
scoped_refptr<base::SequencedTaskRunner> GetTaskRunner() override {
return base::ThreadTaskRunnerHandle::Get();
}
net::NetworkQualityEstimator* GetNetworkQualityEstimator() override {
return estimator_;
}
net::TestNetworkQualityEstimator* estimator_;
DISALLOW_COPY_AND_ASSIGN(TestNetworkQualityEstimatorProvider);
};
} // namespace
class NetworkMetricsProviderTest : public testing::Test {
protected:
NetworkMetricsProviderTest()
: scoped_task_environment_(
base::test::ScopedTaskEnvironment::MainThreadType::IO) {
#if defined(OS_CHROMEOS)
chromeos::DBusThreadManager::Initialize();
chromeos::NetworkHandler::Initialize();
#endif // OS_CHROMEOS
}
private:
base::test::ScopedTaskEnvironment scoped_task_environment_;
};
// Verifies that the effective connection type is correctly set.
TEST_F(NetworkMetricsProviderTest, EffectiveConnectionType) {
net::TestNetworkQualityEstimator estimator;
std::unique_ptr<NetworkMetricsProvider::NetworkQualityEstimatorProvider>
estimator_provider(base::WrapUnique(
new TestNetworkQualityEstimatorProvider(&estimator)));
SystemProfileProto system_profile;
NetworkMetricsProvider network_metrics_provider(
std::move(estimator_provider));
EXPECT_EQ(net::EFFECTIVE_CONNECTION_TYPE_UNKNOWN,
network_metrics_provider.effective_connection_type_);
EXPECT_EQ(net::EFFECTIVE_CONNECTION_TYPE_UNKNOWN,
network_metrics_provider.min_effective_connection_type_);
EXPECT_EQ(net::EFFECTIVE_CONNECTION_TYPE_UNKNOWN,
network_metrics_provider.max_effective_connection_type_);
network_metrics_provider.ProvideSystemProfileMetrics(&system_profile);
EXPECT_EQ(SystemProfileProto::Network::EFFECTIVE_CONNECTION_TYPE_UNKNOWN,
system_profile.network().min_effective_connection_type());
EXPECT_EQ(SystemProfileProto::Network::EFFECTIVE_CONNECTION_TYPE_UNKNOWN,
system_profile.network().max_effective_connection_type());
// Set RTT so that the effective connection type is computed as 2G.
estimator.set_recent_http_rtt(base::TimeDelta::FromMilliseconds(1500));
estimator.set_start_time_null_http_rtt(
base::TimeDelta::FromMilliseconds(1500));
EXPECT_EQ(net::EFFECTIVE_CONNECTION_TYPE_UNKNOWN,
network_metrics_provider.effective_connection_type_);
EXPECT_EQ(net::EFFECTIVE_CONNECTION_TYPE_UNKNOWN,
network_metrics_provider.min_effective_connection_type_);
EXPECT_EQ(net::EFFECTIVE_CONNECTION_TYPE_UNKNOWN,
network_metrics_provider.max_effective_connection_type_);
// Running a request would cause the effective connection type to be computed
// as 2G, and observers to be notified.
estimator.RunOneRequest();
base::RunLoop().RunUntilIdle();
EXPECT_EQ(net::EFFECTIVE_CONNECTION_TYPE_2G,
network_metrics_provider.effective_connection_type_);
EXPECT_EQ(net::EFFECTIVE_CONNECTION_TYPE_2G,
network_metrics_provider.min_effective_connection_type_);
EXPECT_EQ(net::EFFECTIVE_CONNECTION_TYPE_2G,
network_metrics_provider.max_effective_connection_type_);
network_metrics_provider.ProvideSystemProfileMetrics(&system_profile);
EXPECT_EQ(SystemProfileProto::Network::EFFECTIVE_CONNECTION_TYPE_2G,
system_profile.network().min_effective_connection_type());
EXPECT_EQ(SystemProfileProto::Network::EFFECTIVE_CONNECTION_TYPE_2G,
system_profile.network().max_effective_connection_type());
// Set RTT so that the effective connection type is computed as SLOW_2G.
estimator.set_recent_http_rtt(base::TimeDelta::FromMilliseconds(3000));
estimator.set_start_time_null_http_rtt(
base::TimeDelta::FromMilliseconds(3000));
// Running a request would cause the effective connection type to be computed
// as SLOW_2G, and observers to be notified.
estimator.RunOneRequest();
base::RunLoop().RunUntilIdle();
EXPECT_EQ(net::EFFECTIVE_CONNECTION_TYPE_SLOW_2G,
network_metrics_provider.effective_connection_type_);
EXPECT_EQ(net::EFFECTIVE_CONNECTION_TYPE_SLOW_2G,
network_metrics_provider.min_effective_connection_type_);
EXPECT_EQ(net::EFFECTIVE_CONNECTION_TYPE_2G,
network_metrics_provider.max_effective_connection_type_);
network_metrics_provider.ProvideSystemProfileMetrics(&system_profile);
// Effective connection type changed from 2G to SLOW_2G during the lifetime of
// the log. Minimum value of ECT must be different from the maximum value.
EXPECT_EQ(SystemProfileProto::Network::EFFECTIVE_CONNECTION_TYPE_SLOW_2G,
system_profile.network().min_effective_connection_type());
EXPECT_EQ(SystemProfileProto::Network::EFFECTIVE_CONNECTION_TYPE_2G,
system_profile.network().max_effective_connection_type());
// Getting the system profile again should return the current effective
// connection type.
network_metrics_provider.ProvideSystemProfileMetrics(&system_profile);
EXPECT_EQ(SystemProfileProto::Network::EFFECTIVE_CONNECTION_TYPE_SLOW_2G,
system_profile.network().min_effective_connection_type());
EXPECT_EQ(SystemProfileProto::Network::EFFECTIVE_CONNECTION_TYPE_SLOW_2G,
system_profile.network().max_effective_connection_type());
}
// Verifies that the effective connection type is not set to UNKNOWN when there
// is a change in the connection type.
TEST_F(NetworkMetricsProviderTest, ECTAmbiguousOnConnectionTypeChange) {
net::TestNetworkQualityEstimator estimator;
std::unique_ptr<NetworkMetricsProvider::NetworkQualityEstimatorProvider>
estimator_provider(base::WrapUnique(
new TestNetworkQualityEstimatorProvider(&estimator)));
SystemProfileProto system_profile;
NetworkMetricsProvider network_metrics_provider(
std::move(estimator_provider));
EXPECT_EQ(net::EFFECTIVE_CONNECTION_TYPE_UNKNOWN,
network_metrics_provider.effective_connection_type_);
EXPECT_EQ(net::EFFECTIVE_CONNECTION_TYPE_UNKNOWN,
network_metrics_provider.min_effective_connection_type_);
EXPECT_EQ(net::EFFECTIVE_CONNECTION_TYPE_UNKNOWN,
network_metrics_provider.max_effective_connection_type_);
// Set RTT so that the effective connection type is computed as 2G.
estimator.set_recent_http_rtt(base::TimeDelta::FromMilliseconds(1500));
estimator.set_start_time_null_http_rtt(
base::TimeDelta::FromMilliseconds(1500));
// Running a request would cause the effective connection type to be computed
// as 2G, and observers to be notified.
estimator.RunOneRequest();
base::RunLoop().RunUntilIdle();
EXPECT_EQ(net::EFFECTIVE_CONNECTION_TYPE_2G,
network_metrics_provider.effective_connection_type_);
EXPECT_EQ(net::EFFECTIVE_CONNECTION_TYPE_2G,
network_metrics_provider.min_effective_connection_type_);
EXPECT_EQ(net::EFFECTIVE_CONNECTION_TYPE_2G,
network_metrics_provider.max_effective_connection_type_);
// There is no change in the connection type. Effective connection types
// should be reported as 2G.
network_metrics_provider.ProvideSystemProfileMetrics(&system_profile);
EXPECT_EQ(SystemProfileProto::Network::EFFECTIVE_CONNECTION_TYPE_2G,
system_profile.network().min_effective_connection_type());
EXPECT_EQ(SystemProfileProto::Network::EFFECTIVE_CONNECTION_TYPE_2G,
system_profile.network().max_effective_connection_type());
// Even with change in the connection type, effective connection types
// should be reported as 2G.
network_metrics_provider.OnConnectionTypeChanged(
net::NetworkChangeNotifier::CONNECTION_2G);
network_metrics_provider.ProvideSystemProfileMetrics(&system_profile);
EXPECT_EQ(SystemProfileProto::Network::EFFECTIVE_CONNECTION_TYPE_2G,
system_profile.network().min_effective_connection_type());
EXPECT_EQ(SystemProfileProto::Network::EFFECTIVE_CONNECTION_TYPE_2G,
system_profile.network().max_effective_connection_type());
}
} // namespace metrics
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