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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/persistent_host_scan_cache_impl.h"
#include <memory>
#include <unordered_map>
#include "chromeos/ash/components/tether/fake_host_scan_cache.h"
#include "chromeos/ash/components/tether/host_scan_test_util.h"
#include "components/sync_preferences/testing_pref_service_syncable.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace ash {
namespace tether {
class PersistentHostScanCacheImplTest : public testing::Test {
public:
PersistentHostScanCacheImplTest(const PersistentHostScanCacheImplTest&) =
delete;
PersistentHostScanCacheImplTest& operator=(
const PersistentHostScanCacheImplTest&) = delete;
protected:
PersistentHostScanCacheImplTest()
: test_entries_(host_scan_test_util::CreateTestEntries()) {}
void SetUp() override {
test_pref_service_ =
std::make_unique<sync_preferences::TestingPrefServiceSyncable>();
PersistentHostScanCacheImpl::RegisterPrefs(test_pref_service_->registry());
host_scan_cache_ =
std::make_unique<PersistentHostScanCacheImpl>(test_pref_service_.get());
expected_cache_ = std::make_unique<FakeHostScanCache>();
}
void SetHostScanResult(const HostScanCacheEntry& entry) {
host_scan_cache_->SetHostScanResult(entry);
expected_cache_->SetHostScanResult(entry);
EXPECT_TRUE(host_scan_cache_->ExistsInCache(entry.tether_network_guid));
EXPECT_TRUE(expected_cache_->ExistsInCache(entry.tether_network_guid));
}
void RemoveHostScanResult(const std::string& tether_network_guid) {
host_scan_cache_->RemoveHostScanResult(tether_network_guid);
expected_cache_->RemoveHostScanResult(tether_network_guid);
EXPECT_FALSE(host_scan_cache_->ExistsInCache(tether_network_guid));
EXPECT_FALSE(expected_cache_->ExistsInCache(tether_network_guid));
}
void VerifyPersistentCacheMatchesInMemoryCache(size_t expected_size) {
std::unordered_map<std::string, HostScanCacheEntry> entries =
host_scan_cache_->GetStoredCacheEntries();
EXPECT_EQ(expected_size, entries.size());
EXPECT_EQ(expected_size, expected_cache_->size());
EXPECT_EQ(expected_cache_->cache(), entries);
EXPECT_EQ(expected_cache_->GetTetherGuidsInCache(),
host_scan_cache_->GetTetherGuidsInCache());
}
const std::unordered_map<std::string, HostScanCacheEntry> test_entries_;
std::unique_ptr<sync_preferences::TestingPrefServiceSyncable>
test_pref_service_;
std::unique_ptr<FakeHostScanCache> expected_cache_;
std::unique_ptr<PersistentHostScanCacheImpl> host_scan_cache_;
};
TEST_F(PersistentHostScanCacheImplTest, TestSetAndRemove) {
SetHostScanResult(test_entries_.at(host_scan_test_util::kTetherGuid0));
VerifyPersistentCacheMatchesInMemoryCache(1u /* expected_size */);
SetHostScanResult(test_entries_.at(host_scan_test_util::kTetherGuid1));
VerifyPersistentCacheMatchesInMemoryCache(2u /* expected_size */);
SetHostScanResult(test_entries_.at(host_scan_test_util::kTetherGuid2));
VerifyPersistentCacheMatchesInMemoryCache(3u /* expected_size */);
SetHostScanResult(test_entries_.at(host_scan_test_util::kTetherGuid3));
VerifyPersistentCacheMatchesInMemoryCache(4u /* expected_size */);
RemoveHostScanResult(host_scan_test_util::kTetherGuid0);
VerifyPersistentCacheMatchesInMemoryCache(3u /* expected_size */);
RemoveHostScanResult(host_scan_test_util::kTetherGuid1);
VerifyPersistentCacheMatchesInMemoryCache(2u /* expected_size */);
RemoveHostScanResult(host_scan_test_util::kTetherGuid2);
VerifyPersistentCacheMatchesInMemoryCache(1u /* expected_size */);
RemoveHostScanResult(host_scan_test_util::kTetherGuid3);
VerifyPersistentCacheMatchesInMemoryCache(0u /* expected_size */);
}
TEST_F(PersistentHostScanCacheImplTest, TestUpdate) {
SetHostScanResult(test_entries_.at(host_scan_test_util::kTetherGuid0));
VerifyPersistentCacheMatchesInMemoryCache(1u /* expected_size */);
EXPECT_EQ(host_scan_test_util::kTetherSetupRequired0,
host_scan_cache_->DoesHostRequireSetup(
host_scan_test_util::kTetherGuid0));
// Update existing entry, including changing the "setup required" field.
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());
VerifyPersistentCacheMatchesInMemoryCache(1u /* expected_size */);
EXPECT_EQ(host_scan_test_util::kTetherSetupRequired1,
host_scan_cache_->DoesHostRequireSetup(
host_scan_test_util::kTetherGuid0));
}
TEST_F(PersistentHostScanCacheImplTest, TestStoredPersistently) {
SetHostScanResult(test_entries_.at(host_scan_test_util::kTetherGuid0));
VerifyPersistentCacheMatchesInMemoryCache(1u /* expected_size */);
SetHostScanResult(test_entries_.at(host_scan_test_util::kTetherGuid1));
VerifyPersistentCacheMatchesInMemoryCache(2u /* expected_size */);
// Now, delete the existing PersistentHostScanCacheImpl object. All of its
// in-memory state will be cleaned up, but it should have stored the scanned
// data persistently.
host_scan_cache_.reset();
// Create a new object.
host_scan_cache_ =
std::make_unique<PersistentHostScanCacheImpl>(test_pref_service_.get());
// The new object should still access the stored scanned data.
VerifyPersistentCacheMatchesInMemoryCache(2u /* expected_size */);
// Make some changes - update one existing result, add a new one, and remove
// an old one.
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());
VerifyPersistentCacheMatchesInMemoryCache(2u /* expected_size */);
SetHostScanResult(test_entries_.at(host_scan_test_util::kTetherGuid2));
VerifyPersistentCacheMatchesInMemoryCache(3u /* expected_size */);
RemoveHostScanResult(host_scan_test_util::kTetherGuid1);
VerifyPersistentCacheMatchesInMemoryCache(2u /* expected_size */);
// Delete the current PersistentHostScanCacheImpl and create another new one.
// It should still contain the same data.
host_scan_cache_ =
std::make_unique<PersistentHostScanCacheImpl>(test_pref_service_.get());
VerifyPersistentCacheMatchesInMemoryCache(2u /* expected_size */);
}
} // namespace tether
} // namespace ash
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