1 /*
2 * Copyright (C) 2010 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 #include <array>
18
19 #include <unistd.h>
20 #include <time.h>
21 #include <errno.h>
22
23 #include <binder/Binder.h>
24 #include <binder/Parcel.h>
25 #include <gtest/gtest.h>
26 #include <input/InputTransport.h>
27 #include <utils/StopWatch.h>
28 #include <utils/StrongPointer.h>
29 #include <utils/Timers.h>
30
31 namespace android {
32
33 namespace {
operator ==(const InputChannel & left,const InputChannel & right)34 bool operator==(const InputChannel& left, const InputChannel& right) {
35 struct stat lhs, rhs;
36 if (fstat(left.getFd(), &lhs) != 0) {
37 return false;
38 }
39 if (fstat(right.getFd(), &rhs) != 0) {
40 return false;
41 }
42 // If file descriptors are pointing to same inode they are duplicated fds.
43 return left.getName() == right.getName() &&
44 left.getConnectionToken() == right.getConnectionToken() && lhs.st_ino == rhs.st_ino;
45 }
46 } // namespace
47
48 class InputChannelTest : public testing::Test {
49 };
50
TEST_F(InputChannelTest,ClientAndServerTokensMatch)51 TEST_F(InputChannelTest, ClientAndServerTokensMatch) {
52 std::unique_ptr<InputChannel> serverChannel, clientChannel;
53
54 status_t result =
55 InputChannel::openInputChannelPair("channel name", serverChannel, clientChannel);
56 ASSERT_EQ(OK, result) << "should have successfully opened a channel pair";
57 EXPECT_EQ(serverChannel->getConnectionToken(), clientChannel->getConnectionToken());
58 }
59
TEST_F(InputChannelTest,OpenInputChannelPair_ReturnsAPairOfConnectedChannels)60 TEST_F(InputChannelTest, OpenInputChannelPair_ReturnsAPairOfConnectedChannels) {
61 std::unique_ptr<InputChannel> serverChannel, clientChannel;
62
63 status_t result = InputChannel::openInputChannelPair("channel name",
64 serverChannel, clientChannel);
65
66 ASSERT_EQ(OK, result) << "should have successfully opened a channel pair";
67
68 // Name
69 EXPECT_STREQ("channel name (server)", serverChannel->getName().c_str())
70 << "server channel should have suffixed name";
71 EXPECT_STREQ("channel name (client)", clientChannel->getName().c_str())
72 << "client channel should have suffixed name";
73
74 // Server->Client communication
75 InputMessage serverMsg = {};
76 serverMsg.header.type = InputMessage::Type::KEY;
77 serverMsg.body.key.action = AKEY_EVENT_ACTION_DOWN;
78 EXPECT_EQ(OK, serverChannel->sendMessage(&serverMsg))
79 << "server channel should be able to send message to client channel";
80
81 InputMessage clientMsg;
82 EXPECT_EQ(OK, clientChannel->receiveMessage(&clientMsg))
83 << "client channel should be able to receive message from server channel";
84 EXPECT_EQ(serverMsg.header.type, clientMsg.header.type)
85 << "client channel should receive the correct message from server channel";
86 EXPECT_EQ(serverMsg.body.key.action, clientMsg.body.key.action)
87 << "client channel should receive the correct message from server channel";
88
89 // Client->Server communication
90 InputMessage clientReply = {};
91 clientReply.header.type = InputMessage::Type::FINISHED;
92 clientReply.header.seq = 0x11223344;
93 clientReply.body.finished.handled = true;
94 EXPECT_EQ(OK, clientChannel->sendMessage(&clientReply))
95 << "client channel should be able to send message to server channel";
96
97 InputMessage serverReply;
98 EXPECT_EQ(OK, serverChannel->receiveMessage(&serverReply))
99 << "server channel should be able to receive message from client channel";
100 EXPECT_EQ(clientReply.header.type, serverReply.header.type)
101 << "server channel should receive the correct message from client channel";
102 EXPECT_EQ(clientReply.header.seq, serverReply.header.seq)
103 << "server channel should receive the correct message from client channel";
104 EXPECT_EQ(clientReply.body.finished.handled, serverReply.body.finished.handled)
105 << "server channel should receive the correct message from client channel";
106 }
107
TEST_F(InputChannelTest,ProbablyHasInput)108 TEST_F(InputChannelTest, ProbablyHasInput) {
109 std::unique_ptr<InputChannel> senderChannel, receiverChannel;
110
111 // Open a pair of channels.
112 status_t result =
113 InputChannel::openInputChannelPair("channel name", senderChannel, receiverChannel);
114 ASSERT_EQ(OK, result) << "should have successfully opened a channel pair";
115
116 ASSERT_FALSE(receiverChannel->probablyHasInput());
117
118 // Send one message.
119 InputMessage serverMsg = {};
120 serverMsg.header.type = InputMessage::Type::KEY;
121 serverMsg.body.key.action = AKEY_EVENT_ACTION_DOWN;
122 EXPECT_EQ(OK, senderChannel->sendMessage(&serverMsg))
123 << "server channel should be able to send message to client channel";
124
125 // Verify input is available.
126 bool hasInput = false;
127 do {
128 // The probablyHasInput() can return false positive under rare circumstances uncontrollable
129 // by the tests. Re-request the availability in this case. Returning |false| for a long
130 // time is not intended, and would cause a test timeout.
131 hasInput = receiverChannel->probablyHasInput();
132 } while (!hasInput);
133 EXPECT_TRUE(hasInput)
134 << "client channel should observe that message is available before receiving it";
135
136 // Receive (consume) the message.
137 InputMessage clientMsg;
138 EXPECT_EQ(OK, receiverChannel->receiveMessage(&clientMsg))
139 << "client channel should be able to receive message from server channel";
140 EXPECT_EQ(serverMsg.header.type, clientMsg.header.type)
141 << "client channel should receive the correct message from server channel";
142 EXPECT_EQ(serverMsg.body.key.action, clientMsg.body.key.action)
143 << "client channel should receive the correct message from server channel";
144
145 // Verify input is not available.
146 EXPECT_FALSE(receiverChannel->probablyHasInput())
147 << "client should not observe any more messages after receiving the single one";
148 }
149
TEST_F(InputChannelTest,ReceiveSignal_WhenNoSignalPresent_ReturnsAnError)150 TEST_F(InputChannelTest, ReceiveSignal_WhenNoSignalPresent_ReturnsAnError) {
151 std::unique_ptr<InputChannel> serverChannel, clientChannel;
152
153 status_t result = InputChannel::openInputChannelPair("channel name",
154 serverChannel, clientChannel);
155
156 ASSERT_EQ(OK, result)
157 << "should have successfully opened a channel pair";
158
159 InputMessage msg;
160 EXPECT_EQ(WOULD_BLOCK, clientChannel->receiveMessage(&msg))
161 << "receiveMessage should have returned WOULD_BLOCK";
162 }
163
TEST_F(InputChannelTest,ReceiveSignal_WhenPeerClosed_ReturnsAnError)164 TEST_F(InputChannelTest, ReceiveSignal_WhenPeerClosed_ReturnsAnError) {
165 std::unique_ptr<InputChannel> serverChannel, clientChannel;
166
167 status_t result = InputChannel::openInputChannelPair("channel name",
168 serverChannel, clientChannel);
169
170 ASSERT_EQ(OK, result)
171 << "should have successfully opened a channel pair";
172
173 serverChannel.reset(); // close server channel
174
175 InputMessage msg;
176 EXPECT_EQ(DEAD_OBJECT, clientChannel->receiveMessage(&msg))
177 << "receiveMessage should have returned DEAD_OBJECT";
178 }
179
TEST_F(InputChannelTest,SendSignal_WhenPeerClosed_ReturnsAnError)180 TEST_F(InputChannelTest, SendSignal_WhenPeerClosed_ReturnsAnError) {
181 std::unique_ptr<InputChannel> serverChannel, clientChannel;
182
183 status_t result = InputChannel::openInputChannelPair("channel name",
184 serverChannel, clientChannel);
185
186 ASSERT_EQ(OK, result)
187 << "should have successfully opened a channel pair";
188
189 serverChannel.reset(); // close server channel
190
191 InputMessage msg;
192 msg.header.type = InputMessage::Type::KEY;
193 EXPECT_EQ(DEAD_OBJECT, clientChannel->sendMessage(&msg))
194 << "sendMessage should have returned DEAD_OBJECT";
195 }
196
TEST_F(InputChannelTest,SendAndReceive_MotionClassification)197 TEST_F(InputChannelTest, SendAndReceive_MotionClassification) {
198 std::unique_ptr<InputChannel> serverChannel, clientChannel;
199 status_t result = InputChannel::openInputChannelPair("channel name",
200 serverChannel, clientChannel);
201 ASSERT_EQ(OK, result)
202 << "should have successfully opened a channel pair";
203
204 std::array<MotionClassification, 3> classifications = {
205 MotionClassification::NONE,
206 MotionClassification::AMBIGUOUS_GESTURE,
207 MotionClassification::DEEP_PRESS,
208 };
209
210 InputMessage serverMsg = {}, clientMsg;
211 serverMsg.header.type = InputMessage::Type::MOTION;
212 serverMsg.header.seq = 1;
213 serverMsg.body.motion.pointerCount = 1;
214
215 for (MotionClassification classification : classifications) {
216 // Send and receive a message with classification
217 serverMsg.body.motion.classification = classification;
218 EXPECT_EQ(OK, serverChannel->sendMessage(&serverMsg))
219 << "server channel should be able to send message to client channel";
220
221 EXPECT_EQ(OK, clientChannel->receiveMessage(&clientMsg))
222 << "client channel should be able to receive message from server channel";
223 EXPECT_EQ(serverMsg.header.type, clientMsg.header.type);
224 EXPECT_EQ(classification, clientMsg.body.motion.classification) <<
225 "Expected to receive " << motionClassificationToString(classification);
226 }
227 }
228
TEST_F(InputChannelTest,DuplicateChannelAndAssertEqual)229 TEST_F(InputChannelTest, DuplicateChannelAndAssertEqual) {
230 std::unique_ptr<InputChannel> serverChannel, clientChannel;
231
232 status_t result =
233 InputChannel::openInputChannelPair("channel dup", serverChannel, clientChannel);
234
235 ASSERT_EQ(OK, result) << "should have successfully opened a channel pair";
236
237 std::unique_ptr<InputChannel> dupChan = serverChannel->dup();
238
239 EXPECT_EQ(*serverChannel == *dupChan, true) << "inputchannel should be equal after duplication";
240 }
241
242 } // namespace android
243