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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/host_scan_cache.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 "testing/gtest/include/gtest/gtest.h"
namespace ash {
namespace tether {
namespace {
class TestObserver final : public HostScanCache::Observer {
public:
TestObserver() : empty_cache_count_(0) {}
TestObserver(const TestObserver&) = delete;
TestObserver& operator=(const TestObserver&) = delete;
uint32_t empty_cache_count() const { return empty_cache_count_; }
// HostScanCache::Observer:
void OnCacheBecameEmpty() override { empty_cache_count_++; }
private:
uint32_t empty_cache_count_;
};
} // namespace
class HostScanCacheTest : public testing::Test {
public:
HostScanCacheTest(const HostScanCacheTest&) = delete;
HostScanCacheTest& operator=(const HostScanCacheTest&) = delete;
protected:
HostScanCacheTest()
: test_entries_(host_scan_test_util::CreateTestEntries()) {}
void SetUp() override {
host_scan_cache_ = std::make_unique<FakeHostScanCache>();
observer_ = std::make_unique<TestObserver>();
host_scan_cache_->AddObserver(observer_.get());
}
void TearDown() override {
host_scan_cache_->RemoveObserver(observer_.get());
}
const std::unordered_map<std::string, HostScanCacheEntry> test_entries_;
std::unique_ptr<FakeHostScanCache> host_scan_cache_;
std::unique_ptr<TestObserver> observer_;
};
TEST_F(HostScanCacheTest, TestSetAndRemove) {
// Set and remove a single entry
host_scan_cache_->SetHostScanResult(
test_entries_.at(host_scan_test_util::kTetherGuid0));
EXPECT_FALSE(host_scan_cache_->empty());
EXPECT_EQ(0u, observer_->empty_cache_count());
host_scan_cache_->RemoveHostScanResult(host_scan_test_util::kTetherGuid0);
EXPECT_TRUE(host_scan_cache_->empty());
EXPECT_EQ(1u, observer_->empty_cache_count());
// Set and remove multiple entries
host_scan_cache_->SetHostScanResult(
test_entries_.at(host_scan_test_util::kTetherGuid0));
EXPECT_FALSE(host_scan_cache_->empty());
host_scan_cache_->SetHostScanResult(
test_entries_.at(host_scan_test_util::kTetherGuid1));
EXPECT_FALSE(host_scan_cache_->empty());
host_scan_cache_->RemoveHostScanResult(host_scan_test_util::kTetherGuid0);
EXPECT_FALSE(host_scan_cache_->empty());
EXPECT_EQ(1u, observer_->empty_cache_count());
host_scan_cache_->RemoveHostScanResult(host_scan_test_util::kTetherGuid1);
EXPECT_TRUE(host_scan_cache_->empty());
EXPECT_EQ(2u, observer_->empty_cache_count());
}
} // namespace tether
} // namespace ash
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