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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 <map>
#include <memory>
#include "base/command_line.h"
#include "base/memory/raw_ptr.h"
#include "base/metrics/field_trial.h"
#include "base/run_loop.h"
#include "base/values.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/net/system_network_context_manager.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/test/base/in_process_browser_test.h"
#include "components/variations/variations_associated_data.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/test/browser_test.h"
#include "net/base/features.h"
#include "net/nqe/network_quality_estimator.h"
#include "net/test/embedded_test_server/embedded_test_server.h"
#include "net/traffic_annotation/network_traffic_annotation_test_helper.h"
#include "services/network/public/cpp/network_quality_tracker.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "url/gurl.h"
namespace {
class TestNetworkQualityObserver
: public network::NetworkQualityTracker::EffectiveConnectionTypeObserver {
public:
explicit TestNetworkQualityObserver(network::NetworkQualityTracker* tracker)
: run_loop_wait_effective_connection_type_(
net::EFFECTIVE_CONNECTION_TYPE_UNKNOWN),
tracker_(tracker),
effective_connection_type_(net::EFFECTIVE_CONNECTION_TYPE_UNKNOWN) {
tracker_->AddEffectiveConnectionTypeObserver(this);
}
TestNetworkQualityObserver(const TestNetworkQualityObserver&) = delete;
TestNetworkQualityObserver& operator=(const TestNetworkQualityObserver&) =
delete;
~TestNetworkQualityObserver() override {
tracker_->RemoveEffectiveConnectionTypeObserver(this);
}
// NetworkQualityTracker::EffectiveConnectionTypeObserver implementation:
void OnEffectiveConnectionTypeChanged(
net::EffectiveConnectionType type) override {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
net::EffectiveConnectionType queried_type =
tracker_->GetEffectiveConnectionType();
EXPECT_EQ(type, queried_type);
effective_connection_type_ = type;
if (effective_connection_type_ != run_loop_wait_effective_connection_type_)
return;
if (run_loop_)
run_loop_->Quit();
}
void WaitForNotification(
net::EffectiveConnectionType run_loop_wait_effective_connection_type) {
if (effective_connection_type_ == run_loop_wait_effective_connection_type)
return;
ASSERT_NE(net::EFFECTIVE_CONNECTION_TYPE_UNKNOWN,
run_loop_wait_effective_connection_type);
run_loop_ = std::make_unique<base::RunLoop>();
run_loop_wait_effective_connection_type_ =
run_loop_wait_effective_connection_type;
run_loop_->Run();
run_loop_.reset();
}
private:
net::EffectiveConnectionType run_loop_wait_effective_connection_type_;
std::unique_ptr<base::RunLoop> run_loop_;
raw_ptr<network::NetworkQualityTracker> tracker_;
net::EffectiveConnectionType effective_connection_type_;
};
void CheckEffectiveConnectionType(net::EffectiveConnectionType expected) {
TestNetworkQualityObserver network_quality_observer(
g_browser_process->network_quality_tracker());
network_quality_observer.WaitForNotification(expected);
}
class NetworkQualityEstimatorBrowserTest : public InProcessBrowserTest {
public:
NetworkQualityEstimatorBrowserTest() = default;
~NetworkQualityEstimatorBrowserTest() override = default;
void SetUp() override {
// Must start listening (And get a port for the proxy) before calling
// SetUp(). Use two phase EmbeddedTestServer setup for proxy tests.
ASSERT_TRUE(embedded_test_server()->InitializeAndListen());
InProcessBrowserTest::SetUp();
}
void SetUpOnMainThread() override {
embedded_test_server()->StartAcceptingConnections();
}
void TearDown() override {
// Need to stop this before |connection_listener_| is destroyed.
EXPECT_TRUE(embedded_test_server()->ShutdownAndWaitUntilComplete());
InProcessBrowserTest::TearDown();
}
};
class NetworkQualityEstimatorEctCommandLineBrowserTest
: public NetworkQualityEstimatorBrowserTest {
public:
NetworkQualityEstimatorEctCommandLineBrowserTest() = default;
~NetworkQualityEstimatorEctCommandLineBrowserTest() override = default;
void SetUpCommandLine(base::CommandLine* command_line) override {
command_line->AppendSwitchASCII("--force-effective-connection-type",
"Slow-2G");
}
};
IN_PROC_BROWSER_TEST_F(NetworkQualityEstimatorEctCommandLineBrowserTest,
ForceECTFromCommandLine) {
CheckEffectiveConnectionType(net::EFFECTIVE_CONNECTION_TYPE_SLOW_2G);
}
class NetworkQualityEstimatorEctFieldTrialBrowserTest
: public NetworkQualityEstimatorBrowserTest {
public:
NetworkQualityEstimatorEctFieldTrialBrowserTest() = default;
~NetworkQualityEstimatorEctFieldTrialBrowserTest() override = default;
void SetUpCommandLine(base::CommandLine* command_line) override {
variations::testing::ClearAllVariationParams();
std::map<std::string, std::string> variation_params;
variation_params["force_effective_connection_type"] = "2G";
scoped_feature_list_.InitAndEnableFeatureWithParameters(
net::features::kNetworkQualityEstimator, variation_params);
}
private:
base::test::ScopedFeatureList scoped_feature_list_;
};
IN_PROC_BROWSER_TEST_F(NetworkQualityEstimatorEctFieldTrialBrowserTest,
ForceECTUsingFieldTrial) {
CheckEffectiveConnectionType(net::EFFECTIVE_CONNECTION_TYPE_2G);
}
class NetworkQualityEstimatorEctFieldTrialAndCommandLineBrowserTest
: public NetworkQualityEstimatorEctFieldTrialBrowserTest {
public:
NetworkQualityEstimatorEctFieldTrialAndCommandLineBrowserTest() = default;
~NetworkQualityEstimatorEctFieldTrialAndCommandLineBrowserTest() override =
default;
void SetUpCommandLine(base::CommandLine* command_line) override {
NetworkQualityEstimatorEctFieldTrialBrowserTest::SetUpCommandLine(
command_line);
command_line->AppendSwitchASCII("--force-effective-connection-type",
"Slow-2G");
}
};
IN_PROC_BROWSER_TEST_F(
NetworkQualityEstimatorEctFieldTrialAndCommandLineBrowserTest,
ECTFromCommandLineOverridesFieldTrial) {
CheckEffectiveConnectionType(net::EFFECTIVE_CONNECTION_TYPE_SLOW_2G);
}
} // namespace
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