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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chromeos/ash/components/phonehub/tether_controller_impl.h"
#include <memory>
#include "base/memory/weak_ptr.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "base/test/task_environment.h"
#include "chromeos/ash/components/network/network_state_handler.h"
#include "chromeos/ash/components/network/network_state_test_helper.h"
#include "chromeos/ash/components/phonehub/fake_user_action_recorder.h"
#include "chromeos/ash/components/phonehub/mutable_phone_model.h"
#include "chromeos/ash/components/phonehub/phone_model_test_util.h"
#include "chromeos/ash/components/phonehub/phone_status_model.h"
#include "chromeos/ash/services/multidevice_setup/public/cpp/fake_multidevice_setup_client.h"
#include "chromeos/ash/services/network_config/in_process_instance.h"
#include "chromeos/ash/services/network_config/public/cpp/cros_network_config_test_helper.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace ash::phonehub {
namespace {
using ::chromeos::network_config::mojom::ConnectionStateType;
using ::chromeos::network_config::mojom::NetworkStatePropertiesPtr;
using ::chromeos::network_config::mojom::StartConnectResult;
using multidevice_setup::mojom::Feature;
using multidevice_setup::mojom::FeatureState;
constexpr char kWifiGuid[] = "WifiGuid";
constexpr char kTetherGuid[] = "TetherGuid";
constexpr char kTetherNetworkName[] = "TetherNetworkName";
constexpr char kTetherNetworkCarrier[] = "TetherNetworkCarrier";
constexpr int kBatteryPercentage = 100;
constexpr int kSignalStrength = 100;
constexpr bool kHasConnectedToHost = true;
class FakeObserver : public TetherController::Observer {
public:
FakeObserver() = default;
~FakeObserver() override = default;
size_t num_status_changes() const { return num_status_changes_; }
size_t num_scan_failed() const { return num_scan_failed_; }
// TetherController::Observer:
void OnTetherStatusChanged() override { ++num_status_changes_; }
void OnAttemptConnectionScanFailed() override { ++num_scan_failed_; }
private:
size_t num_status_changes_ = 0;
size_t num_scan_failed_ = 0;
};
PhoneStatusModel CreateTestPhoneStatusModel(
PhoneStatusModel::MobileStatus mobile_status =
PhoneStatusModel::MobileStatus::kSimWithReception) {
PhoneStatusModel::MobileConnectionMetadata metadata;
metadata.signal_strength = PhoneStatusModel::SignalStrength::kFourBars;
metadata.mobile_provider =
mobile_status == PhoneStatusModel::MobileStatus::kSimWithReception
? std::u16string(kFakeMobileProviderName)
: std::u16string();
return PhoneStatusModel(mobile_status, metadata,
PhoneStatusModel::ChargingState::kNotCharging,
PhoneStatusModel::BatterySaverState::kOff,
/*battery_percentage=*/100u);
}
} // namespace
class TetherControllerImplTest : public testing::Test {
protected:
friend class TetherControllerImpl;
TetherControllerImplTest() = default;
TetherControllerImplTest(const TetherControllerImplTest&) = delete;
TetherControllerImplTest& operator=(const TetherControllerImplTest&) = delete;
~TetherControllerImplTest() override = default;
class FakeTetherNetworkConnector
: public TetherControllerImpl::TetherNetworkConnector {
public:
FakeTetherNetworkConnector() {
network_config::BindToInProcessInstance(
cros_network_config_.BindNewPipeAndPassReceiver());
}
~FakeTetherNetworkConnector() override = default;
void StartConnect(const std::string& guid,
StartConnectCallback callback) override {
start_connect_callback_ = std::move(callback);
}
void StartDisconnect(const std::string& guid,
StartDisconnectCallback callback) override {
start_disconnect_callback_ = std::move(callback);
}
void GetNetworkStateList(
chromeos::network_config::mojom::NetworkFilterPtr filter,
GetNetworkStateListCallback callback) override {
cros_network_config_->GetNetworkStateList(
std::move(filter),
base::BindOnce(
&FakeTetherNetworkConnector::OnVisibleTetherNetworkFetched,
weak_ptr_factory_.GetWeakPtr(), std::move(callback)));
}
void SetNextConnectionStateType(ConnectionStateType connection_state) {
connection_state_ = connection_state;
}
void OnVisibleTetherNetworkFetched(
GetNetworkStateListCallback callback,
std::vector<NetworkStatePropertiesPtr> networks) {
if (connection_state_.has_value() && networks.size() == 1) {
networks[0]->connection_state = *connection_state_;
connection_state_ = std::nullopt;
}
std::move(callback).Run(std::move(networks));
}
bool DoesPendingStartConnectCallbackExist() {
return !start_connect_callback_.is_null();
}
bool DoesPendingDisconnectCallbackExist() {
return !start_disconnect_callback_.is_null();
}
void InvokeStartConnectCallbackWithFakeResult(
StartConnectResult result = StartConnectResult::kSuccess,
const std::string& message = "") {
std::move(start_connect_callback_).Run(result, message);
}
void InvokeDisconnectCallbackWithRealResults(std::string service_path) {
cros_network_config_->StartDisconnect(
service_path, std::move(start_disconnect_callback_));
}
void InvokeDisconnectCallbackWithFakeParams(bool success = true) {
std::move(start_disconnect_callback_).Run(success);
}
private:
mojo::Remote<chromeos::network_config::mojom::CrosNetworkConfig>
cros_network_config_;
std::optional<ConnectionStateType> connection_state_;
StartConnectCallback start_connect_callback_;
StartDisconnectCallback start_disconnect_callback_;
base::WeakPtrFactory<FakeTetherNetworkConnector> weak_ptr_factory_{this};
};
// testing::Test:
void SetUp() override {
NetworkHandler::Initialize();
base::RunLoop().RunUntilIdle();
service_path_ =
cros_network_config_helper_.network_state_helper().ConfigureService(
base::StringPrintf(
R"({"GUID": "%s", "Type": "wifi",
"State": "ready", "Strength": 100,
"Connectable": true})",
kWifiGuid));
fake_phone_model_.SetPhoneStatusModel(CreateTestPhoneStatusModel());
controller_ =
base::WrapUnique<TetherControllerImpl>(new TetherControllerImpl(
&fake_phone_model_, &fake_user_action_recorder_,
&fake_multidevice_setup_client_,
std::make_unique<FakeTetherNetworkConnector>()));
controller_->AddObserver(&fake_observer_);
}
void TearDown() override {
controller_->RemoveObserver(&fake_observer_);
NetworkHandler::Shutdown();
testing::Test::TearDown();
}
NetworkStateHandler* network_state_handler() {
return cros_network_config_helper_.network_state_helper()
.network_state_handler();
}
FakeTetherNetworkConnector* fake_tether_network_connector() {
return static_cast<FakeTetherNetworkConnector*>(
controller_->connector_.get());
}
void EnableTetherDevice() {
network_state_handler()->SetTetherTechnologyState(
NetworkStateHandler::TechnologyState::TECHNOLOGY_ENABLED);
base::RunLoop().RunUntilIdle();
}
void DisconnectTetherDevice() {
network_state_handler()->SetTetherTechnologyState(
NetworkStateHandler::TechnologyState::TECHNOLOGY_AVAILABLE);
base::RunLoop().RunUntilIdle();
}
void AddVisibleTetherNetwork() {
network_state_handler()->AddTetherNetworkState(
kTetherGuid, kTetherNetworkName, kTetherNetworkCarrier,
kBatteryPercentage, kSignalStrength, kHasConnectedToHost);
network_state_handler()->AssociateTetherNetworkStateWithWifiNetwork(
kTetherGuid, kWifiGuid);
base::RunLoop().RunUntilIdle();
}
void RemoveVisibleTetherNetwork() {
network_state_handler()->RemoveTetherNetworkState(kTetherGuid);
base::RunLoop().RunUntilIdle();
}
void SetTetherNetworkStateConnected() {
network_state_handler()->SetTetherNetworkStateConnected(kTetherGuid);
base::RunLoop().RunUntilIdle();
}
void SetTetherNetworkStateConnecting() {
network_state_handler()->SetTetherNetworkStateConnecting(kTetherGuid);
base::RunLoop().RunUntilIdle();
}
void SetTetherNetworkStateDisconnected() {
network_state_handler()->SetTetherNetworkStateDisconnected(kTetherGuid);
base::RunLoop().RunUntilIdle();
}
void SetTetherScanState(bool is_scanning) {
network_state_handler()->SetTetherScanState(is_scanning);
base::RunLoop().RunUntilIdle();
}
TetherController::Status GetStatus() const {
return controller_->GetStatus();
}
void SetMultideviceSetupFeatureState(FeatureState feature_state) {
fake_multidevice_setup_client_.SetFeatureState(Feature::kInstantTethering,
feature_state);
}
void InvokeDisconnectCallbackWithRealResults() {
fake_tether_network_connector()->InvokeDisconnectCallbackWithRealResults(
service_path_);
base::RunLoop().RunUntilIdle();
}
void InvokePendingSetFeatureEnabledStateCallback(
bool success,
bool expected_enabled = true) {
if (success)
SetMultideviceSetupFeatureState(FeatureState::kEnabledByUser);
fake_multidevice_setup_client_.InvokePendingSetFeatureEnabledStateCallback(
Feature::kInstantTethering,
/*expected_enabled=*/expected_enabled, std::nullopt, success);
}
void AttemptConnection() {
size_t num_recorded_connection_attempts_before_call =
fake_user_action_recorder_.num_tether_attempts();
controller_->AttemptConnection();
EXPECT_EQ(num_recorded_connection_attempts_before_call + 1,
fake_user_action_recorder_.num_tether_attempts());
}
void Disconnect() { controller_->Disconnect(); }
size_t GetNumObserverStatusChanged() const {
return fake_observer_.num_status_changes();
}
size_t GetNumObserverScanFailed() const {
return fake_observer_.num_scan_failed();
}
MutablePhoneModel* phone_model() { return &fake_phone_model_; }
private:
base::test::TaskEnvironment task_environment_;
network_config::CrosNetworkConfigTestHelper cros_network_config_helper_;
std::string service_path_;
multidevice_setup::FakeMultiDeviceSetupClient fake_multidevice_setup_client_;
MutablePhoneModel fake_phone_model_;
FakeUserActionRecorder fake_user_action_recorder_;
FakeObserver fake_observer_;
std::unique_ptr<TetherControllerImpl> controller_;
};
TEST_F(TetherControllerImplTest,
DisconnectCompletesAfterOnActiveNetworksChanged) {
SetMultideviceSetupFeatureState(FeatureState::kEnabledByUser);
EnableTetherDevice();
AddVisibleTetherNetwork();
// Disconnect from a connecting state.
AttemptConnection();
EXPECT_EQ(GetStatus(), TetherController::Status::kConnecting);
SetTetherNetworkStateConnecting();
Disconnect();
// Simulate OnActiveNetworksChanged() being called after Disconnect()
// is requested when Bluetooth is on but hotspot is off, yielding a
// ConnectionStateType::kConnecting tether network instead of a
// ConnectionStateType::kDisconnected network.
fake_tether_network_connector()->SetNextConnectionStateType(
ConnectionStateType::kConnecting);
SetTetherNetworkStateDisconnected();
EXPECT_EQ(GetStatus(), TetherController::Status::kConnecting);
// Upon invoking the Disconnect callback, a refetch occurs.
EXPECT_TRUE(
fake_tether_network_connector()->DoesPendingDisconnectCallbackExist());
InvokeDisconnectCallbackWithRealResults();
EXPECT_EQ(GetStatus(), TetherController::Status::kConnectionAvailable);
}
TEST_F(TetherControllerImplTest, ExternalTetherChangesReflectToStatus) {
EXPECT_EQ(GetStatus(), TetherController::Status::kIneligibleForFeature);
SetMultideviceSetupFeatureState(FeatureState::kEnabledByUser);
EXPECT_EQ(GetNumObserverStatusChanged(), 1U);
EXPECT_EQ(GetStatus(), TetherController::Status::kConnectionUnavailable);
// Tether device and network must be enabled for status changes other than
// kIneligibleForFeature or kConnectionUnavailable to occur.
EnableTetherDevice();
AddVisibleTetherNetwork();
EXPECT_EQ(GetStatus(), TetherController::Status::kConnectionAvailable);
EXPECT_EQ(GetNumObserverStatusChanged(), 2U);
// Starts connecting to tether network.
SetTetherNetworkStateConnecting();
EXPECT_EQ(GetStatus(), TetherController::Status::kConnecting);
EXPECT_EQ(GetNumObserverStatusChanged(), 3U);
// Connected to tether network.
SetTetherNetworkStateConnected();
EXPECT_EQ(GetStatus(), TetherController::Status::kConnected);
EXPECT_EQ(GetNumObserverStatusChanged(), 4U);
// Tether network disconnects on it's own.
SetTetherNetworkStateDisconnected();
EXPECT_EQ(GetStatus(), TetherController::Status::kConnectionAvailable);
EXPECT_EQ(GetNumObserverStatusChanged(), 5U);
// Tether network becomes unavailable.
RemoveVisibleTetherNetwork();
EXPECT_EQ(GetStatus(), TetherController::Status::kConnectionUnavailable);
EXPECT_EQ(GetNumObserverStatusChanged(), 6U);
// Phone status changed to no reception.
phone_model()->SetPhoneStatusModel(CreateTestPhoneStatusModel(
PhoneStatusModel::MobileStatus::kSimButNoReception));
EXPECT_EQ(GetStatus(), TetherController::Status::kNoReception);
EXPECT_EQ(GetNumObserverStatusChanged(), 7U);
// Phone status changed to no SIM.
phone_model()->SetPhoneStatusModel(
CreateTestPhoneStatusModel(PhoneStatusModel::MobileStatus::kNoSim));
EXPECT_EQ(GetStatus(), TetherController::Status::kNoReception);
EXPECT_EQ(GetNumObserverStatusChanged(), 7U);
// Tether feature becomes unsupported,
SetMultideviceSetupFeatureState(FeatureState::kNotSupportedByPhone);
EXPECT_EQ(GetStatus(), TetherController::Status::kIneligibleForFeature);
EXPECT_EQ(GetNumObserverStatusChanged(), 8U);
// Tether feature becomes supported, the status becomes kNoReception again.
SetMultideviceSetupFeatureState(FeatureState::kEnabledByUser);
EXPECT_EQ(GetStatus(), TetherController::Status::kNoReception);
EXPECT_EQ(GetNumObserverStatusChanged(), 9U);
// Phone status changed to having reception. Connection is still unavailable.
phone_model()->SetPhoneStatusModel(CreateTestPhoneStatusModel(
PhoneStatusModel::MobileStatus::kSimWithReception));
EXPECT_EQ(GetStatus(), TetherController::Status::kConnectionUnavailable);
EXPECT_EQ(GetNumObserverStatusChanged(), 10U);
// Phone Model is lost, connection is still unavailable.
phone_model()->SetPhoneStatusModel(std::nullopt);
EXPECT_EQ(GetStatus(), TetherController::Status::kConnectionUnavailable);
EXPECT_EQ(GetNumObserverStatusChanged(), 10U);
// Even though there is no Phone Model, adding a visible tether network
// will cause the controller to indicate a connection is available.
AddVisibleTetherNetwork();
EXPECT_EQ(GetStatus(), TetherController::Status::kConnectionAvailable);
EXPECT_EQ(GetNumObserverStatusChanged(), 11U);
// Even though there is no Phone Model, connecting to a visible tether network
// externally (e.g via OS Settings) will cause the controller to indicate a
// connecting tether state.
SetTetherNetworkStateConnecting();
EXPECT_EQ(GetStatus(), TetherController::Status::kConnecting);
EXPECT_EQ(GetNumObserverStatusChanged(), 12U);
// Even though there is no Phone Model, a connection to a visible tether
// network externally (e.g via OS Settings) will cause the controller to
// indicate a connected tether state.
SetTetherNetworkStateConnected();
EXPECT_EQ(GetStatus(), TetherController::Status::kConnected);
EXPECT_EQ(GetNumObserverStatusChanged(), 13U);
}
TEST_F(TetherControllerImplTest, AttemptConnectDisconnect) {
SetMultideviceSetupFeatureState(FeatureState::kEnabledByUser);
EnableTetherDevice();
AddVisibleTetherNetwork();
AttemptConnection();
EXPECT_TRUE(
fake_tether_network_connector()->DoesPendingStartConnectCallbackExist());
// Upon completing the connection, the status should no longer be connecting.
EXPECT_EQ(GetStatus(), TetherController::Status::kConnecting);
fake_tether_network_connector()->InvokeStartConnectCallbackWithFakeResult();
EXPECT_NE(GetStatus(), TetherController::Status::kConnecting);
// Disconnect from a connected state.
SetTetherNetworkStateConnected();
Disconnect();
EXPECT_TRUE(
fake_tether_network_connector()->DoesPendingDisconnectCallbackExist());
fake_tether_network_connector()->InvokeDisconnectCallbackWithFakeParams();
SetTetherNetworkStateDisconnected();
// Disconnect from a connecting state.
AttemptConnection();
EXPECT_EQ(GetStatus(), TetherController::Status::kConnecting);
Disconnect();
EXPECT_TRUE(
fake_tether_network_connector()->DoesPendingDisconnectCallbackExist());
fake_tether_network_connector()->InvokeDisconnectCallbackWithFakeParams();
AttemptConnection();
EXPECT_EQ(GetStatus(), TetherController::Status::kConnecting);
Disconnect();
EXPECT_EQ(GetStatus(), TetherController::Status::kConnectionAvailable);
EXPECT_TRUE(
fake_tether_network_connector()->DoesPendingDisconnectCallbackExist());
AttemptConnection();
EXPECT_EQ(GetStatus(), TetherController::Status::kConnecting);
fake_tether_network_connector()->InvokeDisconnectCallbackWithFakeParams();
EXPECT_EQ(GetStatus(), TetherController::Status::kConnecting);
// Disconnect from a disconnected state.
RemoveVisibleTetherNetwork();
AttemptConnection();
EXPECT_EQ(GetStatus(), TetherController::Status::kConnecting);
Disconnect();
EXPECT_FALSE(
fake_tether_network_connector()->DoesPendingDisconnectCallbackExist());
}
TEST_F(TetherControllerImplTest, AttemptConnectFeatureOffNetworkExists) {
SetMultideviceSetupFeatureState(FeatureState::kDisabledByUser);
EXPECT_EQ(GetStatus(), TetherController::Status::kConnectionUnavailable);
// Test enable flow when a tether device initially exists.
EnableTetherDevice();
AddVisibleTetherNetwork();
AttemptConnection();
// Should be set connecting even before feature is enabled.
EXPECT_EQ(GetStatus(), TetherController::Status::kConnecting);
// Should still be connecting when feature becomes enabled.
InvokePendingSetFeatureEnabledStateCallback(/*success=*/true);
EXPECT_EQ(GetStatus(), TetherController::Status::kConnecting);
// Connecting to tether device.
SetTetherNetworkStateConnecting();
EXPECT_EQ(GetStatus(), TetherController::Status::kConnecting);
// Connected to tether network.
AddVisibleTetherNetwork();
SetTetherNetworkStateConnected();
EXPECT_EQ(GetStatus(), TetherController::Status::kConnected);
EXPECT_EQ(GetNumObserverStatusChanged(), 3U);
// Tether network is lost.
RemoveVisibleTetherNetwork();
EXPECT_EQ(GetStatus(), TetherController::Status::kConnectionUnavailable);
}
TEST_F(TetherControllerImplTest, AttemptConnectFeatureFailedToEnable) {
EnableTetherDevice();
// Test enable flow when feature fails to turn on.
SetMultideviceSetupFeatureState(FeatureState::kDisabledByUser);
EXPECT_EQ(GetStatus(), TetherController::Status::kConnectionUnavailable);
AttemptConnection();
// Should be set connecting even before feature is enabled.
EXPECT_EQ(GetStatus(), TetherController::Status::kConnecting);
// Should fail to connect if feature does not successfully turn on.
InvokePendingSetFeatureEnabledStateCallback(/*success=*/false);
EXPECT_EQ(GetStatus(), TetherController::Status::kConnectionUnavailable);
// Test when feature is enabled externally and visible network is added
// before callback runs.
AttemptConnection();
// Should be set connecting even before feature is enabled.
EXPECT_EQ(GetStatus(), TetherController::Status::kConnecting);
// Feature enabled externally
SetMultideviceSetupFeatureState(FeatureState::kEnabledByUser);
AddVisibleTetherNetwork();
EXPECT_EQ(GetStatus(), TetherController::Status::kConnecting);
// Should fail to connect if feature does not successfully turn on.
InvokePendingSetFeatureEnabledStateCallback(/*success=*/false);
EXPECT_EQ(GetStatus(), TetherController::Status::kConnectionAvailable);
RemoveVisibleTetherNetwork();
// Test when Mulitdevice suite disabled before callback can return.
AttemptConnection();
// Should be set connecting even before feature is enabled.
EXPECT_EQ(GetStatus(), TetherController::Status::kConnecting);
// Disable suite externally.
SetMultideviceSetupFeatureState(FeatureState::kDisabledByUser);
AddVisibleTetherNetwork();
EXPECT_EQ(GetStatus(), TetherController::Status::kConnectionUnavailable);
}
TEST_F(TetherControllerImplTest, AttemptConnectFeatureOffNoNetwork) {
// Test enable flow when a tether device initially does not exist.
DisconnectTetherDevice();
SetMultideviceSetupFeatureState(FeatureState::kDisabledByUser);
EXPECT_EQ(GetStatus(), TetherController::Status::kConnectionUnavailable);
AttemptConnection();
// Should be set connecting even before feature is enabled.
EXPECT_EQ(GetStatus(), TetherController::Status::kConnecting);
// Should still be connecting when feature becomes enabled.
InvokePendingSetFeatureEnabledStateCallback(/*success=*/true);
EXPECT_EQ(GetStatus(), TetherController::Status::kConnecting);
// Tether is scanning, connection should be connecting still.
SetTetherScanState(true);
EXPECT_EQ(GetStatus(), TetherController::Status::kConnecting);
DisconnectTetherDevice();
// Tether stops scanning, attempt ends and connection should become
// unavailable.
SetTetherScanState(false);
EXPECT_EQ(GetNumObserverScanFailed(), 1U);
EXPECT_EQ(GetStatus(), TetherController::Status::kConnectionUnavailable);
// Tether starts scanning after connection attempt ended.
SetTetherScanState(true);
EXPECT_EQ(GetNumObserverScanFailed(), 1U);
EXPECT_EQ(GetStatus(), TetherController::Status::kConnectionUnavailable);
}
} // namespace ash::phonehub
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