dbus/bus_unittest.cc - chromium/src - Git at Google

 // Copyright (c) 2012 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 "dbus/bus.h"

 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/files/file_descriptor_watcher_posix.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/threading/thread.h"
 #include "dbus/exported_object.h"
 #include "dbus/object_path.h"
 #include "dbus/object_proxy.h"
 #include "dbus/scoped_dbus_error.h"
 #include "dbus/test_service.h"

 #include "testing/gtest/include/gtest/gtest.h"

 namespace dbus {

 namespace {

 // Test helper for BusTest.ListenForServiceOwnerChange that wraps a
 // base::RunLoop. At Run() time, the caller pass in the expected number of
 // quit calls, and at QuitIfConditionIsSatisified() time, only quit the RunLoop
 // if the expected number of quit calls have been reached.
 class RunLoopWithExpectedCount {
  public:
   RunLoopWithExpectedCount() : expected_quit_calls_(0), actual_quit_calls_(0) {}
   ~RunLoopWithExpectedCount() = default;

   void Run(int expected_quit_calls) {
     DCHECK_EQ(0, expected_quit_calls_);
     DCHECK_EQ(0, actual_quit_calls_);
     expected_quit_calls_ = expected_quit_calls;
     run_loop_.reset(new base::RunLoop());
     run_loop_->Run();
   }

   void QuitIfConditionIsSatisified() {
     if (++actual_quit_calls_ != expected_quit_calls_)
       return;
     run_loop_->Quit();
     expected_quit_calls_ = 0;
     actual_quit_calls_ = 0;
   }

  private:
   std::unique_ptr<base::RunLoop> run_loop_;
   int expected_quit_calls_;
   int actual_quit_calls_;

   DISALLOW_COPY_AND_ASSIGN(RunLoopWithExpectedCount);
 };

 // Test helper for BusTest.ListenForServiceOwnerChange.
 void OnServiceOwnerChanged(RunLoopWithExpectedCount* run_loop_state,
                            std::string* service_owner,
                            int* num_of_owner_changes,
                            const std::string& new_service_owner) {
   *service_owner = new_service_owner;
   ++(*num_of_owner_changes);
   run_loop_state->QuitIfConditionIsSatisified();
 }

 }  // namespace

 TEST(BusTest, GetObjectProxy) {
   Bus::Options options;
   scoped_refptr<Bus> bus = new Bus(options);

   ObjectProxy* object_proxy1 =
       bus->GetObjectProxy("org.chromium.TestService",
                           ObjectPath("/org/chromium/TestObject"));
   ASSERT_TRUE(object_proxy1);

   // This should return the same object.
   ObjectProxy* object_proxy2 =
       bus->GetObjectProxy("org.chromium.TestService",
                           ObjectPath("/org/chromium/TestObject"));
   ASSERT_TRUE(object_proxy2);
   EXPECT_EQ(object_proxy1, object_proxy2);

   // This should not.
   ObjectProxy* object_proxy3 =
       bus->GetObjectProxy(
           "org.chromium.TestService",
           ObjectPath("/org/chromium/DifferentTestObject"));
   ASSERT_TRUE(object_proxy3);
   EXPECT_NE(object_proxy1, object_proxy3);

   bus->ShutdownAndBlock();
 }

 TEST(BusTest, GetObjectProxyIgnoreUnknownService) {
   Bus::Options options;
   scoped_refptr<Bus> bus = new Bus(options);

   ObjectProxy* object_proxy1 =
       bus->GetObjectProxyWithOptions(
           "org.chromium.TestService",
           ObjectPath("/org/chromium/TestObject"),
           ObjectProxy::IGNORE_SERVICE_UNKNOWN_ERRORS);
   ASSERT_TRUE(object_proxy1);

   // This should return the same object.
   ObjectProxy* object_proxy2 =
       bus->GetObjectProxyWithOptions(
           "org.chromium.TestService",
           ObjectPath("/org/chromium/TestObject"),
           ObjectProxy::IGNORE_SERVICE_UNKNOWN_ERRORS);
   ASSERT_TRUE(object_proxy2);
   EXPECT_EQ(object_proxy1, object_proxy2);

   // This should not.
   ObjectProxy* object_proxy3 =
       bus->GetObjectProxyWithOptions(
           "org.chromium.TestService",
           ObjectPath("/org/chromium/DifferentTestObject"),
           ObjectProxy::IGNORE_SERVICE_UNKNOWN_ERRORS);
   ASSERT_TRUE(object_proxy3);
   EXPECT_NE(object_proxy1, object_proxy3);

   bus->ShutdownAndBlock();
 }

 TEST(BusTest, RemoveObjectProxy) {
   // Setup the current thread's MessageLoop.
   base::MessageLoop message_loop;

   // Start the D-Bus thread.
   base::Thread::Options thread_options;
   thread_options.message_loop_type = base::MessageLoop::TYPE_IO;
   base::Thread dbus_thread("D-Bus thread");
   dbus_thread.StartWithOptions(thread_options);

   // Create the bus.
   Bus::Options options;
   options.dbus_task_runner = dbus_thread.task_runner();
   scoped_refptr<Bus> bus = new Bus(options);
   ASSERT_FALSE(bus->shutdown_completed());

   // Try to remove a non existant object proxy should return false.
   ASSERT_FALSE(bus->RemoveObjectProxy("org.chromium.TestService",
                                       ObjectPath("/org/chromium/TestObject"),
                                       base::DoNothing()));

   ObjectProxy* object_proxy1 =
       bus->GetObjectProxy("org.chromium.TestService",
                           ObjectPath("/org/chromium/TestObject"));
   ASSERT_TRUE(object_proxy1);

   // Increment the reference count to the object proxy to avoid destroying it
   // while removing the object.
   object_proxy1->AddRef();

   // Remove the object from the bus. This will invalidate any other usage of
   // object_proxy1 other than destroy it. We keep this object for a comparison
   // at a later time.
   ASSERT_TRUE(bus->RemoveObjectProxy("org.chromium.TestService",
                                      ObjectPath("/org/chromium/TestObject"),
                                      base::DoNothing()));

   // This should return a different object because the first object was removed
   // from the bus, but not deleted from memory.
   ObjectProxy* object_proxy2 =
       bus->GetObjectProxy("org.chromium.TestService",
                           ObjectPath("/org/chromium/TestObject"));
   ASSERT_TRUE(object_proxy2);

   // Compare the new object with the first object. The first object still exists
   // thanks to the increased reference.
   EXPECT_NE(object_proxy1, object_proxy2);

   // Release object_proxy1.
   object_proxy1->Release();

   // Shut down synchronously.
   bus->ShutdownOnDBusThreadAndBlock();
   EXPECT_TRUE(bus->shutdown_completed());
   dbus_thread.Stop();
 }

 TEST(BusTest, GetExportedObject) {
   Bus::Options options;
   scoped_refptr<Bus> bus = new Bus(options);

   ExportedObject* object_proxy1 =
       bus->GetExportedObject(ObjectPath("/org/chromium/TestObject"));
   ASSERT_TRUE(object_proxy1);

   // This should return the same object.
   ExportedObject* object_proxy2 =
       bus->GetExportedObject(ObjectPath("/org/chromium/TestObject"));
   ASSERT_TRUE(object_proxy2);
   EXPECT_EQ(object_proxy1, object_proxy2);

   // This should not.
   ExportedObject* object_proxy3 =
       bus->GetExportedObject(
           ObjectPath("/org/chromium/DifferentTestObject"));
   ASSERT_TRUE(object_proxy3);
   EXPECT_NE(object_proxy1, object_proxy3);

   bus->ShutdownAndBlock();
 }

 TEST(BusTest, UnregisterExportedObject) {
   // Start the D-Bus thread.
   base::Thread::Options thread_options;
   thread_options.message_loop_type = base::MessageLoop::TYPE_IO;
   base::Thread dbus_thread("D-Bus thread");
   dbus_thread.StartWithOptions(thread_options);

   // Create the bus.
   Bus::Options options;
   options.dbus_task_runner = dbus_thread.task_runner();
   scoped_refptr<Bus> bus = new Bus(options);
   ASSERT_FALSE(bus->shutdown_completed());

   ExportedObject* object_proxy1 =
       bus->GetExportedObject(ObjectPath("/org/chromium/TestObject"));
   ASSERT_TRUE(object_proxy1);

   // Increment the reference count to the object proxy to avoid destroying it
   // calling UnregisterExportedObject. This ensures the dbus::ExportedObject is
   // not freed from memory. See http://crbug.com/137846 for details.
   object_proxy1->AddRef();

   bus->UnregisterExportedObject(ObjectPath("/org/chromium/TestObject"));

   // This should return a new object because the object_proxy1 is still in
   // alloc'ed memory.
   ExportedObject* object_proxy2 =
       bus->GetExportedObject(ObjectPath("/org/chromium/TestObject"));
   ASSERT_TRUE(object_proxy2);
   EXPECT_NE(object_proxy1, object_proxy2);

   // Release the incremented reference.
   object_proxy1->Release();

   // Shut down synchronously.
   bus->ShutdownOnDBusThreadAndBlock();
   EXPECT_TRUE(bus->shutdown_completed());
   dbus_thread.Stop();
 }

 TEST(BusTest, ShutdownAndBlock) {
   Bus::Options options;
   scoped_refptr<Bus> bus = new Bus(options);
   ASSERT_FALSE(bus->shutdown_completed());

   // Shut down synchronously.
   bus->ShutdownAndBlock();
   EXPECT_TRUE(bus->shutdown_completed());
 }

 TEST(BusTest, ShutdownAndBlockWithDBusThread) {
   // Start the D-Bus thread.
   base::Thread::Options thread_options;
   thread_options.message_loop_type = base::MessageLoop::TYPE_IO;
   base::Thread dbus_thread("D-Bus thread");
   dbus_thread.StartWithOptions(thread_options);

   // Create the bus.
   Bus::Options options;
   options.dbus_task_runner = dbus_thread.task_runner();
   scoped_refptr<Bus> bus = new Bus(options);
   ASSERT_FALSE(bus->shutdown_completed());

   // Shut down synchronously.
   bus->ShutdownOnDBusThreadAndBlock();
   EXPECT_TRUE(bus->shutdown_completed());
   dbus_thread.Stop();
 }

 TEST(BusTest, DoubleAddAndRemoveMatch) {
   Bus::Options options;
   scoped_refptr<Bus> bus = new Bus(options);
   ScopedDBusError error;

   bus->Connect();

   // Adds the same rule twice.
   bus->AddMatch(
       "type='signal',interface='org.chromium.TestService',path='/'",
       error.get());
   ASSERT_FALSE(error.is_set());

   bus->AddMatch(
       "type='signal',interface='org.chromium.TestService',path='/'",
       error.get());
   ASSERT_FALSE(error.is_set());

   // Removes the same rule twice.
   ASSERT_TRUE(bus->RemoveMatch(
       "type='signal',interface='org.chromium.TestService',path='/'",
       error.get()));
   ASSERT_FALSE(error.is_set());

   // The rule should be still in the bus since it was removed only once.
   // A second removal shouldn't give an error.
   ASSERT_TRUE(bus->RemoveMatch(
       "type='signal',interface='org.chromium.TestService',path='/'",
       error.get()));
   ASSERT_FALSE(error.is_set());

   // A third attemp to remove the same rule should fail.
   ASSERT_FALSE(bus->RemoveMatch(
       "type='signal',interface='org.chromium.TestService',path='/'",
       error.get()));

   bus->ShutdownAndBlock();
 }

 TEST(BusTest, ListenForServiceOwnerChange) {
   base::MessageLoopForIO message_loop;

   // This enables FileDescriptorWatcher, which is required by dbus::Watch.
   base::FileDescriptorWatcher file_descriptor_watcher(
       message_loop.task_runner());

   RunLoopWithExpectedCount run_loop_state;

   // Create the bus.
   Bus::Options bus_options;
   scoped_refptr<Bus> bus = new Bus(bus_options);

   // Add a listener.
   std::string service_owner1;
   int num_of_owner_changes1 = 0;
   Bus::GetServiceOwnerCallback callback1 =
       base::Bind(&OnServiceOwnerChanged,
                  &run_loop_state,
                  &service_owner1,
                  &num_of_owner_changes1);
   bus->ListenForServiceOwnerChange("org.chromium.TestService", callback1);
   // This should be a no-op.
   bus->ListenForServiceOwnerChange("org.chromium.TestService", callback1);
   base::RunLoop().RunUntilIdle();

   // Nothing has happened yet. Check initial state.
   EXPECT_TRUE(service_owner1.empty());
   EXPECT_EQ(0, num_of_owner_changes1);

   // Make an ownership change.
   ASSERT_TRUE(bus->RequestOwnershipAndBlock("org.chromium.TestService",
                                             Bus::REQUIRE_PRIMARY));
   run_loop_state.Run(1);

   {
     // Get the current service owner and check to make sure the listener got
     // the right value.
     std::string current_service_owner =
         bus->GetServiceOwnerAndBlock("org.chromium.TestService",
                                      Bus::REPORT_ERRORS);
     ASSERT_FALSE(current_service_owner.empty());

     // Make sure the listener heard about the new owner.
     EXPECT_EQ(current_service_owner, service_owner1);

     // Test the second ListenForServiceOwnerChange() above is indeed a no-op.
     EXPECT_EQ(1, num_of_owner_changes1);
   }

   // Add a second listener.
   std::string service_owner2;
   int num_of_owner_changes2 = 0;
   Bus::GetServiceOwnerCallback callback2 =
       base::Bind(&OnServiceOwnerChanged,
                  &run_loop_state,
                  &service_owner2,
                  &num_of_owner_changes2);
   bus->ListenForServiceOwnerChange("org.chromium.TestService", callback2);
   base::RunLoop().RunUntilIdle();

   // Release the ownership and make sure the service owner listeners fire with
   // the right values and the right number of times.
   ASSERT_TRUE(bus->ReleaseOwnership("org.chromium.TestService"));
   run_loop_state.Run(2);

   EXPECT_TRUE(service_owner1.empty());
   EXPECT_TRUE(service_owner2.empty());
   EXPECT_EQ(2, num_of_owner_changes1);
   EXPECT_EQ(1, num_of_owner_changes2);

   // Unlisten so shutdown can proceed correctly.
   bus->UnlistenForServiceOwnerChange("org.chromium.TestService", callback1);
   bus->UnlistenForServiceOwnerChange("org.chromium.TestService", callback2);
   base::RunLoop().RunUntilIdle();

   // Shut down synchronously.
   bus->ShutdownAndBlock();
   EXPECT_TRUE(bus->shutdown_completed());
 }

 TEST(BusTest, GetConnectionName) {
   Bus::Options options;
   scoped_refptr<Bus> bus = new Bus(options);

   // Connection name is empty since bus is not connected.
   EXPECT_FALSE(bus->IsConnected());
   EXPECT_TRUE(bus->GetConnectionName().empty());

   // Connect bus to D-Bus.
   bus->Connect();

   // Connection name is not empty after connection is established.
   EXPECT_TRUE(bus->IsConnected());
   EXPECT_FALSE(bus->GetConnectionName().empty());

   // Shut down synchronously.
   bus->ShutdownAndBlock();
   EXPECT_TRUE(bus->shutdown_completed());
 }

 }  // namespace dbus
	// Copyright (c) 2012 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 "dbus/bus.h"

	#include "base/bind.h"
	#include "base/bind_helpers.h"
	#include "base/files/file_descriptor_watcher_posix.h"
	#include "base/macros.h"
	#include "base/memory/ref_counted.h"
	#include "base/message_loop/message_loop.h"
	#include "base/run_loop.h"
	#include "base/threading/thread.h"
	#include "dbus/exported_object.h"
	#include "dbus/object_path.h"
	#include "dbus/object_proxy.h"
	#include "dbus/scoped_dbus_error.h"
	#include "dbus/test_service.h"

	#include "testing/gtest/include/gtest/gtest.h"

	namespace dbus {

	namespace {

	// Test helper for BusTest.ListenForServiceOwnerChange that wraps a
	// base::RunLoop. At Run() time, the caller pass in the expected number of
	// quit calls, and at QuitIfConditionIsSatisified() time, only quit the RunLoop
	// if the expected number of quit calls have been reached.
	class RunLoopWithExpectedCount {
	public:
	RunLoopWithExpectedCount() : expected_quit_calls_(0), actual_quit_calls_(0) {}
	~RunLoopWithExpectedCount() = default;

	void Run(int expected_quit_calls) {
	DCHECK_EQ(0, expected_quit_calls_);
	DCHECK_EQ(0, actual_quit_calls_);
	expected_quit_calls_ = expected_quit_calls;
	run_loop_.reset(new base::RunLoop());
	run_loop_->Run();
	}

	void QuitIfConditionIsSatisified() {
	if (++actual_quit_calls_ != expected_quit_calls_)
	return;
	run_loop_->Quit();
	expected_quit_calls_ = 0;
	actual_quit_calls_ = 0;
	}

	private:
	std::unique_ptr<base::RunLoop> run_loop_;
	int expected_quit_calls_;
	int actual_quit_calls_;

	DISALLOW_COPY_AND_ASSIGN(RunLoopWithExpectedCount);
	};

	// Test helper for BusTest.ListenForServiceOwnerChange.
	void OnServiceOwnerChanged(RunLoopWithExpectedCount* run_loop_state,
	std::string* service_owner,
	int* num_of_owner_changes,
	const std::string& new_service_owner) {
	*service_owner = new_service_owner;
	++(*num_of_owner_changes);
	run_loop_state->QuitIfConditionIsSatisified();
	}

	} // namespace

	TEST(BusTest, GetObjectProxy) {
	Bus::Options options;
	scoped_refptr<Bus> bus = new Bus(options);

	ObjectProxy* object_proxy1 =
	bus->GetObjectProxy("org.chromium.TestService",
	ObjectPath("/org/chromium/TestObject"));
	ASSERT_TRUE(object_proxy1);

	// This should return the same object.
	ObjectProxy* object_proxy2 =
	bus->GetObjectProxy("org.chromium.TestService",
	ObjectPath("/org/chromium/TestObject"));
	ASSERT_TRUE(object_proxy2);
	EXPECT_EQ(object_proxy1, object_proxy2);

	// This should not.
	ObjectProxy* object_proxy3 =
	bus->GetObjectProxy(
	"org.chromium.TestService",
	ObjectPath("/org/chromium/DifferentTestObject"));
	ASSERT_TRUE(object_proxy3);
	EXPECT_NE(object_proxy1, object_proxy3);

	bus->ShutdownAndBlock();
	}

	TEST(BusTest, GetObjectProxyIgnoreUnknownService) {
	Bus::Options options;
	scoped_refptr<Bus> bus = new Bus(options);

	ObjectProxy* object_proxy1 =
	bus->GetObjectProxyWithOptions(
	"org.chromium.TestService",
	ObjectPath("/org/chromium/TestObject"),
	ObjectProxy::IGNORE_SERVICE_UNKNOWN_ERRORS);
	ASSERT_TRUE(object_proxy1);

	// This should return the same object.
	ObjectProxy* object_proxy2 =
	bus->GetObjectProxyWithOptions(
	"org.chromium.TestService",
	ObjectPath("/org/chromium/TestObject"),
	ObjectProxy::IGNORE_SERVICE_UNKNOWN_ERRORS);
	ASSERT_TRUE(object_proxy2);
	EXPECT_EQ(object_proxy1, object_proxy2);

	// This should not.
	ObjectProxy* object_proxy3 =
	bus->GetObjectProxyWithOptions(
	"org.chromium.TestService",
	ObjectPath("/org/chromium/DifferentTestObject"),
	ObjectProxy::IGNORE_SERVICE_UNKNOWN_ERRORS);
	ASSERT_TRUE(object_proxy3);
	EXPECT_NE(object_proxy1, object_proxy3);

	bus->ShutdownAndBlock();
	}

	TEST(BusTest, RemoveObjectProxy) {
	// Setup the current thread's MessageLoop.
	base::MessageLoop message_loop;

	// Start the D-Bus thread.
	base::Thread::Options thread_options;
	thread_options.message_loop_type = base::MessageLoop::TYPE_IO;
	base::Thread dbus_thread("D-Bus thread");
	dbus_thread.StartWithOptions(thread_options);

	// Create the bus.
	Bus::Options options;
	options.dbus_task_runner = dbus_thread.task_runner();
	scoped_refptr<Bus> bus = new Bus(options);
	ASSERT_FALSE(bus->shutdown_completed());

	// Try to remove a non existant object proxy should return false.
	ASSERT_FALSE(bus->RemoveObjectProxy("org.chromium.TestService",
	ObjectPath("/org/chromium/TestObject"),
	base::DoNothing()));

	ObjectProxy* object_proxy1 =
	bus->GetObjectProxy("org.chromium.TestService",
	ObjectPath("/org/chromium/TestObject"));
	ASSERT_TRUE(object_proxy1);

	// Increment the reference count to the object proxy to avoid destroying it
	// while removing the object.
	object_proxy1->AddRef();

	// Remove the object from the bus. This will invalidate any other usage of
	// object_proxy1 other than destroy it. We keep this object for a comparison
	// at a later time.
	ASSERT_TRUE(bus->RemoveObjectProxy("org.chromium.TestService",
	ObjectPath("/org/chromium/TestObject"),
	base::DoNothing()));

	// This should return a different object because the first object was removed
	// from the bus, but not deleted from memory.
	ObjectProxy* object_proxy2 =
	bus->GetObjectProxy("org.chromium.TestService",
	ObjectPath("/org/chromium/TestObject"));
	ASSERT_TRUE(object_proxy2);

	// Compare the new object with the first object. The first object still exists
	// thanks to the increased reference.
	EXPECT_NE(object_proxy1, object_proxy2);

	// Release object_proxy1.
	object_proxy1->Release();

	// Shut down synchronously.
	bus->ShutdownOnDBusThreadAndBlock();
	EXPECT_TRUE(bus->shutdown_completed());
	dbus_thread.Stop();
	}

	TEST(BusTest, GetExportedObject) {
	Bus::Options options;
	scoped_refptr<Bus> bus = new Bus(options);

	ExportedObject* object_proxy1 =
	bus->GetExportedObject(ObjectPath("/org/chromium/TestObject"));
	ASSERT_TRUE(object_proxy1);

	// This should return the same object.
	ExportedObject* object_proxy2 =
	bus->GetExportedObject(ObjectPath("/org/chromium/TestObject"));
	ASSERT_TRUE(object_proxy2);
	EXPECT_EQ(object_proxy1, object_proxy2);

	// This should not.
	ExportedObject* object_proxy3 =
	bus->GetExportedObject(
	ObjectPath("/org/chromium/DifferentTestObject"));
	ASSERT_TRUE(object_proxy3);
	EXPECT_NE(object_proxy1, object_proxy3);

	bus->ShutdownAndBlock();
	}

	TEST(BusTest, UnregisterExportedObject) {
	// Start the D-Bus thread.
	base::Thread::Options thread_options;
	thread_options.message_loop_type = base::MessageLoop::TYPE_IO;
	base::Thread dbus_thread("D-Bus thread");
	dbus_thread.StartWithOptions(thread_options);

	// Create the bus.
	Bus::Options options;
	options.dbus_task_runner = dbus_thread.task_runner();
	scoped_refptr<Bus> bus = new Bus(options);
	ASSERT_FALSE(bus->shutdown_completed());

	ExportedObject* object_proxy1 =
	bus->GetExportedObject(ObjectPath("/org/chromium/TestObject"));
	ASSERT_TRUE(object_proxy1);

	// Increment the reference count to the object proxy to avoid destroying it
	// calling UnregisterExportedObject. This ensures the dbus::ExportedObject is
	// not freed from memory. See http://crbug.com/137846 for details.
	object_proxy1->AddRef();

	bus->UnregisterExportedObject(ObjectPath("/org/chromium/TestObject"));

	// This should return a new object because the object_proxy1 is still in
	// alloc'ed memory.
	ExportedObject* object_proxy2 =
	bus->GetExportedObject(ObjectPath("/org/chromium/TestObject"));
	ASSERT_TRUE(object_proxy2);
	EXPECT_NE(object_proxy1, object_proxy2);

	// Release the incremented reference.
	object_proxy1->Release();

	// Shut down synchronously.
	bus->ShutdownOnDBusThreadAndBlock();
	EXPECT_TRUE(bus->shutdown_completed());
	dbus_thread.Stop();
	}

	TEST(BusTest, ShutdownAndBlock) {
	Bus::Options options;
	scoped_refptr<Bus> bus = new Bus(options);
	ASSERT_FALSE(bus->shutdown_completed());

	// Shut down synchronously.
	bus->ShutdownAndBlock();
	EXPECT_TRUE(bus->shutdown_completed());
	}

	TEST(BusTest, ShutdownAndBlockWithDBusThread) {
	// Start the D-Bus thread.
	base::Thread::Options thread_options;
	thread_options.message_loop_type = base::MessageLoop::TYPE_IO;
	base::Thread dbus_thread("D-Bus thread");
	dbus_thread.StartWithOptions(thread_options);

	// Create the bus.
	Bus::Options options;
	options.dbus_task_runner = dbus_thread.task_runner();
	scoped_refptr<Bus> bus = new Bus(options);
	ASSERT_FALSE(bus->shutdown_completed());

	// Shut down synchronously.
	bus->ShutdownOnDBusThreadAndBlock();
	EXPECT_TRUE(bus->shutdown_completed());
	dbus_thread.Stop();
	}

	TEST(BusTest, DoubleAddAndRemoveMatch) {
	Bus::Options options;
	scoped_refptr<Bus> bus = new Bus(options);
	ScopedDBusError error;

	bus->Connect();

	// Adds the same rule twice.
	bus->AddMatch(
	"type='signal',interface='org.chromium.TestService',path='/'",
	error.get());
	ASSERT_FALSE(error.is_set());

	bus->AddMatch(
	"type='signal',interface='org.chromium.TestService',path='/'",
	error.get());
	ASSERT_FALSE(error.is_set());

	// Removes the same rule twice.
	ASSERT_TRUE(bus->RemoveMatch(
	"type='signal',interface='org.chromium.TestService',path='/'",
	error.get()));
	ASSERT_FALSE(error.is_set());

	// The rule should be still in the bus since it was removed only once.
	// A second removal shouldn't give an error.
	ASSERT_TRUE(bus->RemoveMatch(
	"type='signal',interface='org.chromium.TestService',path='/'",
	error.get()));
	ASSERT_FALSE(error.is_set());

	// A third attemp to remove the same rule should fail.
	ASSERT_FALSE(bus->RemoveMatch(
	"type='signal',interface='org.chromium.TestService',path='/'",
	error.get()));

	bus->ShutdownAndBlock();
	}

	TEST(BusTest, ListenForServiceOwnerChange) {
	base::MessageLoopForIO message_loop;

	// This enables FileDescriptorWatcher, which is required by dbus::Watch.
	base::FileDescriptorWatcher file_descriptor_watcher(
	message_loop.task_runner());

	RunLoopWithExpectedCount run_loop_state;

	// Create the bus.
	Bus::Options bus_options;
	scoped_refptr<Bus> bus = new Bus(bus_options);

	// Add a listener.
	std::string service_owner1;
	int num_of_owner_changes1 = 0;
	Bus::GetServiceOwnerCallback callback1 =
	base::Bind(&OnServiceOwnerChanged,
	&run_loop_state,
	&service_owner1,
	&num_of_owner_changes1);
	bus->ListenForServiceOwnerChange("org.chromium.TestService", callback1);
	// This should be a no-op.
	bus->ListenForServiceOwnerChange("org.chromium.TestService", callback1);
	base::RunLoop().RunUntilIdle();

	// Nothing has happened yet. Check initial state.
	EXPECT_TRUE(service_owner1.empty());
	EXPECT_EQ(0, num_of_owner_changes1);

	// Make an ownership change.
	ASSERT_TRUE(bus->RequestOwnershipAndBlock("org.chromium.TestService",
	Bus::REQUIRE_PRIMARY));
	run_loop_state.Run(1);

	{
	// Get the current service owner and check to make sure the listener got
	// the right value.
	std::string current_service_owner =
	bus->GetServiceOwnerAndBlock("org.chromium.TestService",
	Bus::REPORT_ERRORS);
	ASSERT_FALSE(current_service_owner.empty());

	// Make sure the listener heard about the new owner.
	EXPECT_EQ(current_service_owner, service_owner1);

	// Test the second ListenForServiceOwnerChange() above is indeed a no-op.
	EXPECT_EQ(1, num_of_owner_changes1);
	}

	// Add a second listener.
	std::string service_owner2;
	int num_of_owner_changes2 = 0;
	Bus::GetServiceOwnerCallback callback2 =
	base::Bind(&OnServiceOwnerChanged,
	&run_loop_state,
	&service_owner2,
	&num_of_owner_changes2);
	bus->ListenForServiceOwnerChange("org.chromium.TestService", callback2);
	base::RunLoop().RunUntilIdle();

	// Release the ownership and make sure the service owner listeners fire with
	// the right values and the right number of times.
	ASSERT_TRUE(bus->ReleaseOwnership("org.chromium.TestService"));
	run_loop_state.Run(2);

	EXPECT_TRUE(service_owner1.empty());
	EXPECT_TRUE(service_owner2.empty());
	EXPECT_EQ(2, num_of_owner_changes1);
	EXPECT_EQ(1, num_of_owner_changes2);

	// Unlisten so shutdown can proceed correctly.
	bus->UnlistenForServiceOwnerChange("org.chromium.TestService", callback1);
	bus->UnlistenForServiceOwnerChange("org.chromium.TestService", callback2);
	base::RunLoop().RunUntilIdle();

	// Shut down synchronously.
	bus->ShutdownAndBlock();
	EXPECT_TRUE(bus->shutdown_completed());
	}

	TEST(BusTest, GetConnectionName) {
	Bus::Options options;
	scoped_refptr<Bus> bus = new Bus(options);

	// Connection name is empty since bus is not connected.
	EXPECT_FALSE(bus->IsConnected());
	EXPECT_TRUE(bus->GetConnectionName().empty());

	// Connect bus to D-Bus.
	bus->Connect();

	// Connection name is not empty after connection is established.
	EXPECT_TRUE(bus->IsConnected());
	EXPECT_FALSE(bus->GetConnectionName().empty());

	// Shut down synchronously.
	bus->ShutdownAndBlock();
	EXPECT_TRUE(bus->shutdown_completed());
	}

	} // namespace dbus