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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 "chromeos/ash/components/tether/network_host_scan_cache.h"
#include <memory>
#include <vector>
#include "base/containers/contains.h"
#include "base/test/task_environment.h"
#include "chromeos/ash/components/network/network_state.h"
#include "chromeos/ash/components/network/network_state_handler.h"
#include "chromeos/ash/components/network/network_state_test_helper.h"
#include "chromeos/ash/components/tether/device_id_tether_network_guid_map.h"
#include "chromeos/ash/components/tether/fake_host_scan_cache.h"
#include "chromeos/ash/components/tether/host_scan_test_util.h"
#include "chromeos/ash/components/tether/mock_tether_host_response_recorder.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
using testing::Invoke;
using testing::NiceMock;
namespace ash {
namespace tether {
class NetworkHostScanCacheTest : public testing::Test {
public:
NetworkHostScanCacheTest(const NetworkHostScanCacheTest&) = delete;
NetworkHostScanCacheTest& operator=(const NetworkHostScanCacheTest&) = delete;
protected:
NetworkHostScanCacheTest()
: test_entries_(host_scan_test_util::CreateTestEntries()) {}
void SetUp() override {
helper_.network_state_handler()->SetTetherTechnologyState(
NetworkStateHandler::TECHNOLOGY_ENABLED);
mock_tether_host_response_recorder_ =
std::make_unique<NiceMock<MockTetherHostResponseRecorder>>();
device_id_tether_network_guid_map_ =
std::make_unique<DeviceIdTetherNetworkGuidMap>();
ON_CALL(*mock_tether_host_response_recorder_,
GetPreviouslyConnectedHostIds())
.WillByDefault(Invoke(
this, &NetworkHostScanCacheTest::GetPreviouslyConnectedHostIds));
host_scan_cache_ = std::make_unique<NetworkHostScanCache>(
helper_.network_state_handler(),
mock_tether_host_response_recorder_.get(),
device_id_tether_network_guid_map_.get());
// To track what is expected to be contained in the cache, maintain a
// FakeHostScanCache in memory and update it alongside |host_scan_cache_|.
// Use a std::vector to track which device IDs correspond to devices whose
// Tether networks' HasConnectedToHost fields are expected to be set.
expected_cache_ = std::make_unique<FakeHostScanCache>();
has_connected_to_host_device_ids_.clear();
}
void TearDown() override {}
std::vector<std::string> GetPreviouslyConnectedHostIds() const {
return has_connected_to_host_device_ids_;
}
void SetHasConnectedToHost(const std::string& tether_network_guid) {
has_connected_to_host_device_ids_.push_back(
device_id_tether_network_guid_map_->GetDeviceIdForTetherNetworkGuid(
tether_network_guid));
mock_tether_host_response_recorder_
->NotifyObserversPreviouslyConnectedHostIdsChanged();
}
void SetHostScanResult(const HostScanCacheEntry& entry) {
host_scan_cache_->SetHostScanResult(entry);
expected_cache_->SetHostScanResult(entry);
}
void RemoveHostScanResult(const std::string& tether_network_guid) {
host_scan_cache_->RemoveHostScanResult(tether_network_guid);
expected_cache_->RemoveHostScanResult(tether_network_guid);
}
bool HasConnectedToHost(const std::string& tether_network_guid) {
return base::Contains(has_connected_to_host_device_ids_,
tether_network_guid);
}
// Verifies that the information present in |expected_cache_| and
// |has_connected_to_host_device_ids_| mirrors what |host_scan_cache_| has set
// in NetworkStateHandler.
void VerifyCacheMatchesNetworkStack(size_t expected_size) {
EXPECT_EQ(expected_size, expected_cache_->size());
EXPECT_EQ(expected_cache_->GetTetherGuidsInCache(),
host_scan_cache_->GetTetherGuidsInCache());
for (auto& it : expected_cache_->cache()) {
const std::string tether_network_guid = it.first;
const HostScanCacheEntry& entry = it.second;
// Ensure that each entry in |expected_cache_| matches the
// corresponding entry in NetworkStateHandler.
const NetworkState* tether_network_state =
helper_.network_state_handler()->GetNetworkStateFromGuid(
tether_network_guid);
ASSERT_TRUE(tether_network_state);
EXPECT_EQ(entry.device_name, tether_network_state->name());
EXPECT_EQ(entry.carrier, tether_network_state->tether_carrier());
EXPECT_EQ(entry.battery_percentage,
tether_network_state->battery_percentage());
EXPECT_EQ(entry.signal_strength, tether_network_state->signal_strength());
EXPECT_EQ(HasConnectedToHost(tether_network_guid),
tether_network_state->tether_has_connected_to_host());
}
}
const base::test::TaskEnvironment task_environment_;
NetworkStateTestHelper helper_{/*use_default_devices_and_services=*/true};
const std::unordered_map<std::string, HostScanCacheEntry> test_entries_;
std::unique_ptr<NiceMock<MockTetherHostResponseRecorder>>
mock_tether_host_response_recorder_;
// TODO(hansberry): Use a fake for this when a real mapping scheme is created.
std::unique_ptr<DeviceIdTetherNetworkGuidMap>
device_id_tether_network_guid_map_;
std::vector<std::string> has_connected_to_host_device_ids_;
std::unique_ptr<FakeHostScanCache> expected_cache_;
std::unique_ptr<NetworkHostScanCache> host_scan_cache_;
};
TEST_F(NetworkHostScanCacheTest, TestSetAndRemove) {
SetHostScanResult(test_entries_.at(host_scan_test_util::kTetherGuid0));
VerifyCacheMatchesNetworkStack(1u /* expected_size */);
SetHostScanResult(test_entries_.at(host_scan_test_util::kTetherGuid1));
VerifyCacheMatchesNetworkStack(2u /* expected_size */);
SetHostScanResult(test_entries_.at(host_scan_test_util::kTetherGuid2));
VerifyCacheMatchesNetworkStack(3u /* expected_size */);
SetHostScanResult(test_entries_.at(host_scan_test_util::kTetherGuid3));
VerifyCacheMatchesNetworkStack(4u /* expected_size */);
RemoveHostScanResult(host_scan_test_util::kTetherGuid0);
VerifyCacheMatchesNetworkStack(3u /* expected_size */);
RemoveHostScanResult(host_scan_test_util::kTetherGuid1);
VerifyCacheMatchesNetworkStack(2u /* expected_size */);
RemoveHostScanResult(host_scan_test_util::kTetherGuid2);
VerifyCacheMatchesNetworkStack(1u /* expected_size */);
RemoveHostScanResult(host_scan_test_util::kTetherGuid3);
VerifyCacheMatchesNetworkStack(0u /* expected_size */);
}
TEST_F(NetworkHostScanCacheTest, TestSetScanResultThenUpdateAndRemove) {
SetHostScanResult(test_entries_.at(host_scan_test_util::kTetherGuid0));
VerifyCacheMatchesNetworkStack(1u /* expected_size */);
// Change the fields for tether network with GUID |kTetherGuid0| to the
// fields corresponding to |kTetherGuid1|.
SetHostScanResult(
*HostScanCacheEntry::Builder()
.SetTetherNetworkGuid(host_scan_test_util::kTetherGuid0)
.SetDeviceName(host_scan_test_util::kTetherDeviceName0)
.SetCarrier(host_scan_test_util::kTetherCarrier1)
.SetBatteryPercentage(host_scan_test_util::kTetherBatteryPercentage1)
.SetSignalStrength(host_scan_test_util::kTetherSignalStrength1)
.SetSetupRequired(host_scan_test_util::kTetherSetupRequired1)
.Build());
VerifyCacheMatchesNetworkStack(1u /* expected_size */);
// Now, remove that result.
RemoveHostScanResult(host_scan_test_util::kTetherGuid0);
VerifyCacheMatchesNetworkStack(0u /* expected_size */);
}
TEST_F(NetworkHostScanCacheTest, TestHasConnectedToHost) {
// Before the test starts, set device 0 as having already connected.
SetHasConnectedToHost(host_scan_test_util::kTetherGuid0);
SetHostScanResult(test_entries_.at(host_scan_test_util::kTetherGuid0));
VerifyCacheMatchesNetworkStack(1u /* expected_size */);
SetHostScanResult(test_entries_.at(host_scan_test_util::kTetherGuid1));
VerifyCacheMatchesNetworkStack(2u /* expected_size */);
// Simulate a connection to device 1.
SetHasConnectedToHost(host_scan_test_util::kTetherGuid1);
VerifyCacheMatchesNetworkStack(2u /* expected_size */);
}
} // namespace tether
} // namespace ash
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