blob: 29ac9b2d7f91dbd54bbce0078b3b4a8a13804ff4 [file] [log] [blame]
// 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_pump_type.h"
#include "base/run_loop.h"
#include "base/test/scoped_task_environment.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) {
base::test::TaskEnvironment task_environment;
// Start the D-Bus thread.
base::Thread::Options thread_options;
thread_options.message_pump_type = base::MessagePumpType::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_pump_type = base::MessagePumpType::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_pump_type = base::MessagePumpType::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::test::TaskEnvironment task_environment(
base::test::TaskEnvironment::MainThreadType::IO);
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