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// Copyright 2016 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/tether/keep_alive_operation.h"
#include <memory>
#include <optional>
#include <vector>
#include "base/memory/ptr_util.h"
#include "base/memory/raw_ptr.h"
#include "base/test/metrics/histogram_tester.h"
#include "base/test/simple_test_clock.h"
#include "chromeos/ash/components/multidevice/remote_device_test_util.h"
#include "chromeos/ash/components/tether/fake_host_connection.h"
#include "chromeos/ash/components/tether/message_wrapper.h"
#include "chromeos/ash/components/tether/proto_test_util.h"
#include "chromeos/ash/components/timer_factory/fake_timer_factory.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
using testing::_;
using testing::Invoke;
using testing::NotNull;
namespace ash::tether {
namespace {
// Used to verify the KeepAliveOperation notifies the observer when appropriate.
class MockOperationObserver : public KeepAliveOperation::Observer {
public:
MockOperationObserver() = default;
MockOperationObserver(const MockOperationObserver&) = delete;
MockOperationObserver& operator=(const MockOperationObserver&) = delete;
~MockOperationObserver() = default;
MOCK_METHOD1(OnOperationFinishedRaw, void(DeviceStatus*));
void OnOperationFinished(
std::unique_ptr<DeviceStatus> device_status) override {
OnOperationFinishedRaw(device_status.get());
}
};
} // namespace
class KeepAliveOperationTest : public testing::Test {
public:
KeepAliveOperationTest(const KeepAliveOperationTest&) = delete;
KeepAliveOperationTest& operator=(const KeepAliveOperationTest&) = delete;
protected:
KeepAliveOperationTest()
: tether_host_(TetherHost(multidevice::CreateRemoteDeviceRefForTest())) {}
void SetUp() override {
fake_host_connection_factory_ =
std::make_unique<FakeHostConnection::Factory>();
operation_ = base::WrapUnique(new KeepAliveOperation(
tether_host_, fake_host_connection_factory_.get()));
operation_->AddObserver(&mock_observer_);
operation_->SetTimerFactoryForTest(
std::make_unique<ash::timer_factory::FakeTimerFactory>());
test_clock_.SetNow(base::Time::UnixEpoch());
operation_->SetClockForTest(&test_clock_);
}
const TetherHost tether_host_;
std::unique_ptr<FakeHostConnection::Factory> fake_host_connection_factory_;
std::unique_ptr<KeepAliveOperation> operation_;
base::SimpleTestClock test_clock_;
MockOperationObserver mock_observer_;
base::HistogramTester histogram_tester_;
};
// Tests that the KeepAliveTickle message is sent to the remote device once the
// communication channel is connected and authenticated.
TEST_F(KeepAliveOperationTest, KeepAliveTickleSentOnceAuthenticated) {
// Setup the connection.
fake_host_connection_factory_->SetupConnectionAttempt(tether_host_);
// Start the operation.
operation_->Initialize();
// Verify the KeepAliveTickle message is sent.
auto message_wrapper = std::make_unique<MessageWrapper>(KeepAliveTickle());
std::string expected_payload = message_wrapper->ToRawMessage();
EXPECT_EQ(1u, fake_host_connection_factory_
->GetActiveConnection(tether_host_.GetDeviceId())
->sent_messages()
.size());
EXPECT_EQ(expected_payload,
fake_host_connection_factory_
->GetActiveConnection(tether_host_.GetDeviceId())
->sent_messages()[0]
.first->ToRawMessage());
}
// Tests that observers are notified when the operation has completed, signified
// by the OnMessageReceived handler being called.
TEST_F(KeepAliveOperationTest, NotifiesObserversOnResponse) {
DeviceStatus test_status = CreateDeviceStatusWithFakeFields();
// Setup the connection.
fake_host_connection_factory_->SetupConnectionAttempt(tether_host_);
// Verify that the observer is called with the correct parameters.
EXPECT_CALL(mock_observer_, OnOperationFinishedRaw(NotNull()))
.WillOnce(Invoke([&test_status](DeviceStatus* status) {
EXPECT_EQ(test_status.SerializeAsString(), status->SerializeAsString());
}));
// Start the operation.
operation_->Initialize();
KeepAliveTickleResponse response;
response.mutable_device_status()->CopyFrom(test_status);
std::unique_ptr<MessageWrapper> message(new MessageWrapper(response));
operation_->OnMessageReceived(std::move(message));
}
TEST_F(KeepAliveOperationTest, RecordsResponseDuration) {
static constexpr base::TimeDelta kKeepAliveTickleResponseTime =
base::Seconds(3);
EXPECT_CALL(mock_observer_, OnOperationFinishedRaw(_));
// Setup the connection.
fake_host_connection_factory_->SetupConnectionAttempt(tether_host_);
// Initialize the operation.
operation_->Initialize();
// Advance the clock in order to verify a non-zero response duration is
// recorded and verified (below).
test_clock_.Advance(kKeepAliveTickleResponseTime);
std::unique_ptr<MessageWrapper> message(
new MessageWrapper(KeepAliveTickleResponse()));
operation_->OnMessageReceived(std::move(message));
histogram_tester_.ExpectTimeBucketCount(
"InstantTethering.Performance.KeepAliveTickleResponseDuration",
kKeepAliveTickleResponseTime, 1);
}
} // namespace ash::tether
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