1 /*
2 * Copyright 2019 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/bit_inserter.h"
18
19 #include <gtest/gtest.h>
20 #include <memory>
21
22 #include "os/log.h"
23
24 using bluetooth::packet::BitInserter;
25 using std::vector;
26
27 namespace bluetooth {
28 namespace packet {
29
TEST(BitInserterTest,addMoreBits)30 TEST(BitInserterTest, addMoreBits) {
31 std::vector<uint8_t> bytes;
32 BitInserter it(bytes);
33
34 for (size_t i = 0; i < 9; i++) {
35 it.insert_bits(static_cast<uint8_t>(i), i);
36 }
37 it.insert_bits(static_cast<uint8_t>(0b1010), 4);
38 std::vector<uint8_t> result = {0b00011101 /* 3 2 1 */, 0b00010101 /* 5 4 */, 0b11100011 /* 7 6 */, 0b10000000 /* 8 */,
39 0b10100000 /* filled with 1010 */};
40
41 ASSERT_EQ(result.size(), bytes.size());
42 for (size_t i = 0; i < bytes.size(); i++) {
43 ASSERT_EQ(result[i], bytes[i]);
44 }
45 }
46
TEST(BitInserterTest,observerTest)47 TEST(BitInserterTest, observerTest) {
48 std::vector<uint8_t> bytes;
49 BitInserter it(bytes);
50 std::vector<uint8_t> copy;
51
52 uint64_t checksum = 0x0123456789abcdef;
53 it.RegisterObserver(ByteObserver([©](uint8_t byte) { copy.push_back(byte); }, [checksum]() { return checksum; }));
54
55 for (size_t i = 0; i < 9; i++) {
56 it.insert_bits(static_cast<uint8_t>(i), i);
57 }
58 it.insert_bits(static_cast<uint8_t>(0b1010), 4);
59 std::vector<uint8_t> result = {0b00011101 /* 3 2 1 */, 0b00010101 /* 5 4 */, 0b11100011 /* 7 6 */, 0b10000000 /* 8 */,
60 0b10100000 /* filled with 1010 */};
61
62 ASSERT_EQ(result.size(), bytes.size());
63 for (size_t i = 0; i < bytes.size(); i++) {
64 ASSERT_EQ(result[i], bytes[i]);
65 }
66
67 ASSERT_EQ(result.size(), copy.size());
68 for (size_t i = 0; i < copy.size(); i++) {
69 ASSERT_EQ(result[i], copy[i]);
70 }
71
72 ByteObserver observer = it.UnregisterObserver();
73 ASSERT_EQ(checksum, observer.GetValue());
74 uint8_t another_byte = 0xef;
75 it.insert_bits(another_byte, 8);
76 ASSERT_EQ(bytes.back(), another_byte);
77 ASSERT_EQ(result.size() + 1, bytes.size());
78 ASSERT_EQ(result.size(), copy.size());
79 }
80
81 } // namespace packet
82 } // namespace bluetooth
83