1 //
2 // Copyright (C) 2015 The Android Open Source Project
3 //
4 // Licensed under the Apache License, Version 2.0 (the "License");
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
7 //
8 // http://www.apache.org/licenses/LICENSE-2.0
9 //
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
15 //
16
17 #ifndef UPDATE_ENGINE_DBUS_TEST_UTILS_H_
18 #define UPDATE_ENGINE_DBUS_TEST_UTILS_H_
19
20 #include <set>
21 #include <string>
22
23 #include <base/bind.h>
24 #include <brillo/message_loops/message_loop.h>
25 #include <gmock/gmock.h>
26
27 namespace chromeos_update_engine {
28 namespace dbus_test_utils {
29
30 #define MOCK_SIGNAL_HANDLER_EXPECT_SIGNAL_HANDLER( \
31 mock_signal_handler, mock_proxy, signal) \
32 do { \
33 EXPECT_CALL((mock_proxy), \
34 Register##signal##SignalHandler(::testing::_, ::testing::_)) \
35 .WillOnce(::chromeos_update_engine::dbus_test_utils::GrabCallbacks( \
36 &(mock_signal_handler))); \
37 } while (false)
38
39 template <typename T>
40 class MockSignalHandler {
41 public:
42 MockSignalHandler() = default;
~MockSignalHandler()43 ~MockSignalHandler() {
44 if (callback_connected_task_ != brillo::MessageLoop::kTaskIdNull)
45 brillo::MessageLoop::current()->CancelTask(callback_connected_task_);
46 }
47
48 // Returns whether the signal handler is registered.
IsHandlerRegistered()49 bool IsHandlerRegistered() const { return signal_callback_ != nullptr; }
50
signal_callback()51 const base::Callback<T>& signal_callback() { return *signal_callback_.get(); }
52
GrabCallbacks(const base::Callback<T> & signal_callback,dbus::ObjectProxy::OnConnectedCallback on_connected_callback)53 void GrabCallbacks(
54 const base::Callback<T>& signal_callback,
55 dbus::ObjectProxy::OnConnectedCallback on_connected_callback) {
56 signal_callback_.reset(new base::Callback<T>(signal_callback));
57 on_connected_callback_.reset(
58 new dbus::ObjectProxy::OnConnectedCallback(on_connected_callback));
59 // Notify from the main loop that the callback was connected.
60 callback_connected_task_ = brillo::MessageLoop::current()->PostTask(
61 FROM_HERE,
62 base::Bind(&MockSignalHandler<T>::OnCallbackConnected,
63 base::Unretained(this)));
64 }
65
66 private:
OnCallbackConnected()67 void OnCallbackConnected() {
68 callback_connected_task_ = brillo::MessageLoop::kTaskIdNull;
69 on_connected_callback_->Run("", "", true);
70 }
71
72 brillo::MessageLoop::TaskId callback_connected_task_{
73 brillo::MessageLoop::kTaskIdNull};
74
75 std::unique_ptr<base::Callback<T>> signal_callback_;
76 std::unique_ptr<dbus::ObjectProxy::OnConnectedCallback>
77 on_connected_callback_;
78 };
79
80 // Defines the action that will call MockSignalHandler<T>::GrabCallbacks for the
81 // right type.
ACTION_P(GrabCallbacks,mock_signal_handler)82 ACTION_P(GrabCallbacks, mock_signal_handler) {
83 mock_signal_handler->GrabCallbacks(arg0, arg1);
84 }
85
86 } // namespace dbus_test_utils
87 } // namespace chromeos_update_engine
88
89 #endif // UPDATE_ENGINE_DBUS_TEST_UTILS_H_
90