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 = TestPacket::Make(
32 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 = TestPacket::Make(test_avctp_data, test_avctp_data_payload_offset,
50 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 = TestPacket::Make(test_avctp_data, test_avctp_data_payload_offset,
62 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 =
71 TestPacket::Make(test_l2cap_data, 3, test_l2cap_data.size() - 2);
72
73 // this will silent SIGABRT sent in ASSERT_DEATH below
74 ScopedSilentDeath _silentDeath;
75
76 ASSERT_DEATH((*packet)[test_l2cap_data.size()], "");
77 }
78
79 // Test that the iterator and array access operator return the same data
TEST(PacketTest,iteratorTest)80 TEST(PacketTest, iteratorTest) {
81 auto packet = TestPacket::Make(
82 test_avctp_data, test_avctp_data_payload_offset, test_avctp_data.size());
83
84 // Check to see if the data matches
85 auto it = packet->begin();
86 for (size_t i = 0; i < packet->size(); i++) {
87 ASSERT_EQ((*packet)[i], *it++);
88 }
89
90 // Check to see if the iterator points to the end of the data
91 ASSERT_EQ(it, packet->end());
92 }
93
94 class ChildTestPacket : public TestPacket {
95 public:
96 using TestPacket::TestPacket;
97
ToString() const98 std::string ToString() const override { return "ChildTestPacket"; };
99 };
100
101 // Test specializing a packet to another packet type
TEST(PacketTest,specializeTest)102 TEST(PacketTest, specializeTest) {
103 auto packet = TestPacket::Make(test_l2cap_data);
104
105 std::shared_ptr<ChildTestPacket> specialized_packet =
106 Packet::Specialize<ChildTestPacket>(packet);
107
108 // Test that the new packet is an instance of ChildTestPacket
109 ASSERT_EQ(specialized_packet->ToString(), "ChildTestPacket");
110
111 // Test that the underlying data is the same and no copy took place
112 ASSERT_EQ(&specialized_packet->GetData(), &packet->GetData());
113 }
114
115 // Test that when the packet goes out of scope, that the underlying memory is
116 // freed
TEST(PacketTest,memoryFreeTest)117 TEST(PacketTest, memoryFreeTest) {
118 auto packet = TestPacket::Make(test_l2cap_data);
119 std::weak_ptr<std::vector<uint8_t>> data_ptr(packet->GetDataPointer());
120
121 ASSERT_FALSE(data_ptr.expired());
122
123 packet.reset();
124
125 ASSERT_TRUE(data_ptr.expired());
126 }
127
128 } // namespace bluetooth