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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef NET_DNS_TEST_DNS_CONFIG_SERVICE_H_
#define NET_DNS_TEST_DNS_CONFIG_SERVICE_H_
#include <memory>
#include <optional>
#include <utility>
#include "base/check.h"
#include "base/functional/callback.h"
#include "net/base/net_export.h"
#include "net/dns/dns_config_service.h"
namespace net {
class DnsHostsParser;
// Simple test implementation of DnsConfigService that will trigger
// notifications only on explicitly calling On...() methods.
class NET_EXPORT_PRIVATE TestDnsConfigService : public DnsConfigService {
public:
TestDnsConfigService();
~TestDnsConfigService() override;
void ReadConfigNow() override {}
void ReadHostsNow() override {}
bool StartWatching() override;
// Expose the protected methods to this test suite.
void InvalidateConfig() { DnsConfigService::InvalidateConfig(); }
void InvalidateHosts() { DnsConfigService::InvalidateHosts(); }
void OnConfigRead(const DnsConfig& config) {
DnsConfigService::OnConfigRead(config);
}
void OnHostsRead(const DnsHosts& hosts) {
DnsConfigService::OnHostsRead(hosts);
}
void RefreshConfig() override;
void SetConfigForRefresh(DnsConfig config) {
DCHECK(!config_for_refresh_);
config_for_refresh_ = std::move(config);
}
private:
std::optional<DnsConfig> config_for_refresh_;
};
// Test implementation of `DnsConfigService` that exercises the
// `DnsConfigService::HostsReader`. Uses an injected `DnsHostsParser`. `Watcher`
// change notifications are simulated using `TriggerHostsChangeNotification()`.
class NET_EXPORT_PRIVATE HostsReadingTestDnsConfigService
: public TestDnsConfigService {
public:
using HostsParserFactory =
base::RepeatingCallback<std::unique_ptr<DnsHostsParser>(void)>;
explicit HostsReadingTestDnsConfigService(
HostsParserFactory hosts_parser_factory);
~HostsReadingTestDnsConfigService() override;
// Simulate a `Watcher` change notification for the HOSTS file.
void TriggerHostsChangeNotification(bool success) {
watcher_->TriggerHostsChangeNotification(success);
}
// DnsConfigService:
void ReadHostsNow() override;
bool StartWatching() override;
private:
class HostsReader : public DnsConfigService::HostsReader {
public:
HostsReader(TestDnsConfigService& service,
HostsParserFactory hosts_parser_factory);
~HostsReader() override;
// DnsConfigService::HostsReader:
std::unique_ptr<SerialWorker::WorkItem> CreateWorkItem() override;
private:
HostsParserFactory hosts_parser_factory_;
};
class NET_EXPORT_PRIVATE Watcher : public DnsConfigService::Watcher {
public:
explicit Watcher(DnsConfigService& service);
~Watcher() override;
void TriggerHostsChangeNotification(bool success);
// DnsConfigService::Watcher:
bool Watch() override;
private:
bool watch_started_ = false;
};
std::unique_ptr<HostsReader> hosts_reader_;
std::unique_ptr<Watcher> watcher_ = std::make_unique<Watcher>(*this);
};
} // namespace net
#endif // NET_DNS_TEST_DNS_CONFIG_SERVICE_H_
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