1 /*
2 * Copyright 2018 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 "packet.h"
18
19 #include <android-base/silent_death_test.h>
20 #include <gtest/gtest.h>
21
22 #include "packet_test_common.h"
23 #include "test_packets.h"
24
25 namespace bluetooth {
26
27 // Test making a packet from another packet. The new packet should have the
28 // same payload bounds as the old packet.
TEST(PacketTest,newPacketFromPacketTest)29 TEST(PacketTest, newPacketFromPacketTest) {
30 // Create a packet with payload bounds
31 auto packet =
32 TestPacket::Make(test_avctp_data, test_avctp_data_payload_offset, test_avctp_data.size());
33
34 // Create packet from bounded packet
35 auto new_packet = TestPacket::Make(packet);
36
37 // Check to see if the new packet is bounded by the payload of the old packet
38 auto it = new_packet->begin();
39 for (size_t i = 0; i < test_avrcp_data.size(); i++) {
40 ASSERT_EQ(test_avrcp_data[i], *it++);
41 }
42 }
43
44 // Test that the correct payload length is returned
TEST(PacketTest,sizeTest)45 TEST(PacketTest, sizeTest) {
46 auto packet = TestPacket::Make(test_avctp_data);
47 ASSERT_EQ(packet->size(), test_avctp_data.size());
48
49 packet =
50 TestPacket::Make(test_avctp_data, test_avctp_data_payload_offset, test_avctp_data.size());
51 ASSERT_EQ(packet->size(), test_avrcp_data.size());
52 }
53
54 // Test the array access operator
TEST(PacketTest,arrayAccessTest)55 TEST(PacketTest, arrayAccessTest) {
56 auto packet = TestPacket::Make(test_l2cap_data);
57 for (size_t i = 0; i < test_l2cap_data.size(); i++) {
58 ASSERT_EQ(test_l2cap_data[i], (*packet)[i]);
59 }
60
61 packet =
62 TestPacket::Make(test_avctp_data, test_avctp_data_payload_offset, test_avctp_data.size());
63 for (size_t i = 0; i < test_avrcp_data.size(); i++) {
64 ASSERT_EQ(test_avrcp_data[i], (*packet)[i]);
65 }
66 }
67
68 // Test that accessing past the end of the defined payload dies
TEST(PacketDeathTest,arrayAccessDeathTest)69 TEST(PacketDeathTest, arrayAccessDeathTest) {
70 auto packet = TestPacket::Make(test_l2cap_data, 3, test_l2cap_data.size() - 2);
71
72 // this will silent SIGABRT sent in ASSERT_DEATH below
73 ScopedSilentDeath _silentDeath;
74
75 ASSERT_DEATH((*packet)[test_l2cap_data.size()], "");
76 }
77
78 // Test that the iterator and array access operator return the same data
TEST(PacketTest,iteratorTest)79 TEST(PacketTest, iteratorTest) {
80 auto packet =
81 TestPacket::Make(test_avctp_data, test_avctp_data_payload_offset, test_avctp_data.size());
82
83 // Check to see if the data matches
84 auto it = packet->begin();
85 for (size_t i = 0; i < packet->size(); i++) {
86 ASSERT_EQ((*packet)[i], *it++);
87 }
88
89 // Check to see if the iterator points to the end of the data
90 ASSERT_EQ(it, packet->end());
91 }
92
93 class ChildTestPacket : public TestPacket {
94 public:
95 using TestPacket::TestPacket;
96
ToString() const97 std::string ToString() const override { return "ChildTestPacket"; }
98 };
99
100 // Test specializing a packet to another packet type
TEST(PacketTest,specializeTest)101 TEST(PacketTest, specializeTest) {
102 auto packet = TestPacket::Make(test_l2cap_data);
103
104 std::shared_ptr<ChildTestPacket> specialized_packet = Packet::Specialize<ChildTestPacket>(packet);
105
106 // Test that the new packet is an instance of ChildTestPacket
107 ASSERT_EQ(specialized_packet->ToString(), "ChildTestPacket");
108
109 // Test that the underlying data is the same and no copy took place
110 ASSERT_EQ(&specialized_packet->GetData(), &packet->GetData());
111 }
112
113 // Test that when the packet goes out of scope, that the underlying memory is
114 // freed
TEST(PacketTest,memoryFreeTest)115 TEST(PacketTest, memoryFreeTest) {
116 auto packet = TestPacket::Make(test_l2cap_data);
117 std::weak_ptr<std::vector<uint8_t>> data_ptr(packet->GetDataPointer());
118
119 ASSERT_FALSE(data_ptr.expired());
120
121 packet.reset();
122
123 ASSERT_TRUE(data_ptr.expired());
124 }
125
126 } // namespace bluetooth
127