1 /*
2 * Copyright (C) 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 <gmock/gmock.h>
18
19 #include "ringbuffer.h"
20
21 using testing::Return;
22 using testing::Test;
23
24 namespace android {
25 namespace hardware {
26 namespace wifi {
27 namespace V1_5 {
28 namespace implementation {
29
30 class RingbufferTest : public Test {
31 public:
32 const uint32_t maxBufferSize_ = 10;
33 Ringbuffer buffer_{maxBufferSize_};
34 };
35
TEST_F(RingbufferTest,CreateEmptyBuffer)36 TEST_F(RingbufferTest, CreateEmptyBuffer) {
37 ASSERT_TRUE(buffer_.getData().empty());
38 }
39
TEST_F(RingbufferTest,CanUseFullBufferCapacity)40 TEST_F(RingbufferTest, CanUseFullBufferCapacity) {
41 const std::vector<uint8_t> input(maxBufferSize_ / 2, '0');
42 const std::vector<uint8_t> input2(maxBufferSize_ / 2, '1');
43 buffer_.append(input);
44 buffer_.append(input2);
45 ASSERT_EQ(2u, buffer_.getData().size());
46 EXPECT_EQ(input, buffer_.getData().front());
47 EXPECT_EQ(input2, buffer_.getData().back());
48 }
49
TEST_F(RingbufferTest,OldDataIsRemovedOnOverflow)50 TEST_F(RingbufferTest, OldDataIsRemovedOnOverflow) {
51 const std::vector<uint8_t> input(maxBufferSize_ / 2, '0');
52 const std::vector<uint8_t> input2(maxBufferSize_ / 2, '1');
53 const std::vector<uint8_t> input3 = {'G'};
54 buffer_.append(input);
55 buffer_.append(input2);
56 buffer_.append(input3);
57 ASSERT_EQ(2u, buffer_.getData().size());
58 EXPECT_EQ(input2, buffer_.getData().front());
59 EXPECT_EQ(input3, buffer_.getData().back());
60 }
61
TEST_F(RingbufferTest,MultipleOldDataIsRemovedOnOverflow)62 TEST_F(RingbufferTest, MultipleOldDataIsRemovedOnOverflow) {
63 const std::vector<uint8_t> input(maxBufferSize_ / 2, '0');
64 const std::vector<uint8_t> input2(maxBufferSize_ / 2, '1');
65 const std::vector<uint8_t> input3(maxBufferSize_, '2');
66 buffer_.append(input);
67 buffer_.append(input2);
68 buffer_.append(input3);
69 ASSERT_EQ(1u, buffer_.getData().size());
70 EXPECT_EQ(input3, buffer_.getData().front());
71 }
72
TEST_F(RingbufferTest,AppendingEmptyBufferDoesNotAddGarbage)73 TEST_F(RingbufferTest, AppendingEmptyBufferDoesNotAddGarbage) {
74 const std::vector<uint8_t> input = {};
75 buffer_.append(input);
76 ASSERT_TRUE(buffer_.getData().empty());
77 }
78
TEST_F(RingbufferTest,OversizedAppendIsDropped)79 TEST_F(RingbufferTest, OversizedAppendIsDropped) {
80 const std::vector<uint8_t> input(maxBufferSize_ + 1, '0');
81 buffer_.append(input);
82 ASSERT_TRUE(buffer_.getData().empty());
83 }
84
TEST_F(RingbufferTest,OversizedAppendDoesNotDropExistingData)85 TEST_F(RingbufferTest, OversizedAppendDoesNotDropExistingData) {
86 const std::vector<uint8_t> input(maxBufferSize_, '0');
87 const std::vector<uint8_t> input2(maxBufferSize_ + 1, '1');
88 buffer_.append(input);
89 buffer_.append(input2);
90 ASSERT_EQ(1u, buffer_.getData().size());
91 EXPECT_EQ(input, buffer_.getData().front());
92 }
93 } // namespace implementation
94 } // namespace V1_5
95 } // namespace wifi
96 } // namespace hardware
97 } // namespace android
98