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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/extensions/api/mdns/dns_sd_registry.h"
#include "chrome/browser/extensions/api/mdns/dns_sd_delegate.h"
#include "chrome/browser/extensions/api/mdns/dns_sd_device_lister.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace extensions {
class MockDnsSdDeviceLister : public DnsSdDeviceLister {
public:
MockDnsSdDeviceLister() : DnsSdDeviceLister(NULL, NULL, "") {}
~MockDnsSdDeviceLister() override {}
MOCK_METHOD1(Discover, void(bool force_update));
};
class TestDnsSdRegistry : public DnsSdRegistry {
public:
TestDnsSdRegistry() : DnsSdRegistry(NULL), delegate_(NULL) {}
~TestDnsSdRegistry() override {}
MockDnsSdDeviceLister* GetListerForService(const std::string& service_type) {
return listers_[service_type];
}
int GetServiceListenerCount(const std::string& service_type) {
if (service_data_map_.find(service_type) == service_data_map_.end())
return 0;
return service_data_map_[service_type].get()->GetListenerCount();
}
MockDnsSdDeviceLister* GetLister(const std::string& service_type) {
return listers_.find(service_type) != listers_.end()
? listers_[service_type]
: nullptr;
}
DnsSdDelegate* GetDelegate() {
return delegate_;
}
protected:
DnsSdDeviceLister* CreateDnsSdDeviceLister(
DnsSdDelegate* delegate,
const std::string& service_type,
local_discovery::ServiceDiscoverySharedClient* discovery_client)
override {
delegate_ = delegate;
MockDnsSdDeviceLister* lister = new MockDnsSdDeviceLister();
listers_[service_type] = lister;
return lister;
};
private:
std::map<std::string, MockDnsSdDeviceLister*> listers_;
// The last delegate used or NULL.
DnsSdDelegate* delegate_;
};
class MockDnsSdObserver : public DnsSdRegistry::DnsSdObserver {
public:
MOCK_METHOD2(OnDnsSdEvent, void(const std::string&,
const DnsSdRegistry::DnsSdServiceList&));
};
class DnsSdRegistryTest : public testing::Test {
public:
DnsSdRegistryTest() {}
~DnsSdRegistryTest() override {}
void SetUp() override {
registry_.reset(new TestDnsSdRegistry());
registry_->AddObserver(&observer_);
}
protected:
scoped_ptr<TestDnsSdRegistry> registry_;
MockDnsSdObserver observer_;
};
// Tests registering 2 listeners and removing one. The device lister should
// not be destroyed.
TEST_F(DnsSdRegistryTest, RegisterUnregisterListeners) {
const std::string service_type = "_testing._tcp.local";
EXPECT_CALL(observer_, OnDnsSdEvent(service_type,
DnsSdRegistry::DnsSdServiceList())).Times(2);
registry_->RegisterDnsSdListener(service_type);
registry_->RegisterDnsSdListener(service_type);
registry_->UnregisterDnsSdListener(service_type);
EXPECT_EQ(1, registry_->GetServiceListenerCount(service_type));
registry_->UnregisterDnsSdListener(service_type);
EXPECT_EQ(0, registry_->GetServiceListenerCount(service_type));
}
// Tests that verify calls to ForceDiscovery() are propagated to registered
// listeners.
TEST_F(DnsSdRegistryTest, ForceDiscovery) {
const std::string service_type1 = "_testing1._tcp.local";
const std::string service_type2 = "_testing2._tcp.local";
EXPECT_CALL(observer_,
OnDnsSdEvent(service_type1, DnsSdRegistry::DnsSdServiceList()));
EXPECT_CALL(observer_,
OnDnsSdEvent(service_type2, DnsSdRegistry::DnsSdServiceList()));
registry_->RegisterDnsSdListener(service_type1);
registry_->RegisterDnsSdListener(service_type2);
EXPECT_EQ(1, registry_->GetServiceListenerCount(service_type1));
EXPECT_EQ(1, registry_->GetServiceListenerCount(service_type2));
EXPECT_CALL(*registry_->GetLister(service_type1), Discover(false));
EXPECT_CALL(*registry_->GetLister(service_type2), Discover(false));
registry_->ForceDiscovery();
}
// Tests registering a listener and receiving an added and updated event.
TEST_F(DnsSdRegistryTest, AddAndUpdate) {
const std::string service_type = "_testing._tcp.local";
const std::string ip_address1 = "192.168.0.100";
const std::string ip_address2 = "192.168.0.101";
DnsSdService service;
service.service_name = "_myDevice." + service_type;
service.ip_address = ip_address1;
DnsSdRegistry::DnsSdServiceList service_list;
EXPECT_CALL(observer_, OnDnsSdEvent(service_type, service_list));
// Add first service.
service_list.push_back(service);
EXPECT_CALL(observer_, OnDnsSdEvent(service_type, service_list));
// Clear services and add same one with different IP address.
service_list.clear();
service.ip_address = ip_address2;
service_list.push_back(service);
EXPECT_CALL(observer_, OnDnsSdEvent(service_type, service_list));
registry_->RegisterDnsSdListener(service_type);
service.ip_address = ip_address1;
registry_->GetDelegate()->ServiceChanged(service_type, true, service);
service.ip_address = ip_address2;
registry_->GetDelegate()->ServiceChanged(service_type, false, service);
}
// Tests registering a listener and receiving an added and removed event.
TEST_F(DnsSdRegistryTest, AddAndRemove) {
const std::string service_type = "_testing._tcp.local";
DnsSdService service;
service.service_name = "_myDevice." + service_type;
service.ip_address = "192.168.0.100";
DnsSdRegistry::DnsSdServiceList service_list;
// Expect to be called twice with empty list (once on register, once after
// removing).
EXPECT_CALL(observer_, OnDnsSdEvent(service_type, service_list)).Times(2);
service_list.push_back(service);
// Expect to be called twice with 1 item (once after adding, once after adding
// again after removal).
EXPECT_CALL(observer_, OnDnsSdEvent(service_type, service_list)).Times(2);
registry_->RegisterDnsSdListener(service_type);
registry_->GetDelegate()->ServiceChanged(service_type, true, service);
registry_->GetDelegate()->ServiceRemoved(service_type, service.service_name);
registry_->GetDelegate()->ServiceChanged(service_type, true, service);
}
// Tests adding multiple services.
TEST_F(DnsSdRegistryTest, AddMultipleServices) {
const std::string service_type = "_testing._tcp.local";
DnsSdService service;
service.service_name = "_myDevice." + service_type;
service.ip_address = "192.168.0.100";
DnsSdService service2;
service.service_name = "_myDevice2." + service_type;
service.ip_address = "192.168.0.101";
DnsSdRegistry::DnsSdServiceList service_list;
EXPECT_CALL(observer_, OnDnsSdEvent(service_type, service_list));
service_list.push_back(service);
EXPECT_CALL(observer_, OnDnsSdEvent(service_type, service_list));
service_list.push_back(service2);
EXPECT_CALL(observer_, OnDnsSdEvent(service_type, service_list));
registry_->RegisterDnsSdListener(service_type);
registry_->GetDelegate()->ServiceChanged(service_type, true, service);
registry_->GetDelegate()->ServiceChanged(service_type, true, service2);
}
// Tests adding multiple services and handling a flush event.
TEST_F(DnsSdRegistryTest, FlushCache) {
testing::InSequence s;
const std::string service_type = "_testing._tcp.local";
DnsSdService service;
service.service_name = "_myDevice." + service_type;
service.ip_address = "192.168.0.100";
DnsSdService service2;
service.service_name = "_myDevice2." + service_type;
service.ip_address = "192.168.0.101";
DnsSdRegistry::DnsSdServiceList service_list;
EXPECT_CALL(observer_, OnDnsSdEvent(service_type, service_list));
service_list.push_back(service);
EXPECT_CALL(observer_, OnDnsSdEvent(service_type, service_list));
service_list.push_back(service2);
EXPECT_CALL(observer_, OnDnsSdEvent(service_type, service_list));
service_list.clear();
EXPECT_CALL(observer_, OnDnsSdEvent(service_type, service_list));
registry_->RegisterDnsSdListener(service_type);
registry_->GetDelegate()->ServiceChanged(service_type, true, service);
registry_->GetDelegate()->ServiceChanged(service_type, true, service2);
registry_->GetDelegate()->ServicesFlushed(service_type);
}
// Tests receiving an update from the DnsSdDelegate that does not change the
// service object does not notify the observer.
TEST_F(DnsSdRegistryTest, UpdateOnlyIfChanged) {
const std::string service_type = "_testing._tcp.local";
const std::string ip_address = "192.168.0.100";
DnsSdService service;
service.service_name = "_myDevice." + service_type;
service.ip_address = ip_address;
DnsSdRegistry::DnsSdServiceList service_list;
EXPECT_CALL(observer_, OnDnsSdEvent(service_type, service_list));
// Expect service_list with initial service.
service_list.push_back(service);
EXPECT_CALL(observer_, OnDnsSdEvent(service_type, service_list));
// Expect service_list with updated service.
service_list.clear();
service.ip_address = "192.168.0.101";
service_list.push_back(service);
EXPECT_CALL(observer_, OnDnsSdEvent(service_type, service_list));
// No more calls to observer_.
registry_->RegisterDnsSdListener(service_type);
service.ip_address = "192.168.0.100";
registry_->GetDelegate()->ServiceChanged(service_type, true, service);
// Update with changed ip address.
service.ip_address = "192.168.0.101";
registry_->GetDelegate()->ServiceChanged(service_type, false, service);
// Update with no changes to the service.
registry_->GetDelegate()->ServiceChanged(service_type, false, service);
}
} // namespace extensions
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