1 /*
2 * Copyright (C) 2015 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 "util/BigBuffer.h"
18
19 #include "test/Test.h"
20
21 using ::testing::NotNull;
22
23 namespace aapt {
24
TEST(BigBufferTest,AllocateSingleBlock)25 TEST(BigBufferTest, AllocateSingleBlock) {
26 BigBuffer buffer(4);
27
28 EXPECT_THAT(buffer.NextBlock<char>(2), NotNull());
29 EXPECT_EQ(2u, buffer.size());
30 }
31
TEST(BigBufferTest,ReturnSameBlockIfNextAllocationFits)32 TEST(BigBufferTest, ReturnSameBlockIfNextAllocationFits) {
33 BigBuffer buffer(16);
34
35 char* b1 = buffer.NextBlock<char>(8);
36 EXPECT_THAT(b1, NotNull());
37
38 char* b2 = buffer.NextBlock<char>(4);
39 EXPECT_THAT(b2, NotNull());
40
41 EXPECT_EQ(b1 + 8, b2);
42 }
43
TEST(BigBufferTest,AllocateExactSizeBlockIfLargerThanBlockSize)44 TEST(BigBufferTest, AllocateExactSizeBlockIfLargerThanBlockSize) {
45 BigBuffer buffer(16);
46
47 EXPECT_THAT(buffer.NextBlock<char>(32), NotNull());
48 EXPECT_EQ(32u, buffer.size());
49 }
50
TEST(BigBufferTest,AppendAndMoveBlock)51 TEST(BigBufferTest, AppendAndMoveBlock) {
52 BigBuffer buffer(16);
53
54 uint32_t* b1 = buffer.NextBlock<uint32_t>();
55 ASSERT_THAT(b1, NotNull());
56 *b1 = 33;
57
58 {
59 BigBuffer buffer2(16);
60 b1 = buffer2.NextBlock<uint32_t>();
61 ASSERT_THAT(b1, NotNull());
62 *b1 = 44;
63
64 buffer.AppendBuffer(std::move(buffer2));
65 EXPECT_EQ(0u, buffer2.size()); // NOLINT
66 EXPECT_EQ(buffer2.begin(), buffer2.end());
67 }
68
69 EXPECT_EQ(2 * sizeof(uint32_t), buffer.size());
70
71 auto b = buffer.begin();
72 ASSERT_NE(b, buffer.end());
73 ASSERT_EQ(sizeof(uint32_t), b->size);
74 ASSERT_EQ(33u, *reinterpret_cast<uint32_t*>(b->buffer.get()));
75 ++b;
76
77 ASSERT_NE(b, buffer.end());
78 ASSERT_EQ(sizeof(uint32_t), b->size);
79 ASSERT_EQ(44u, *reinterpret_cast<uint32_t*>(b->buffer.get()));
80 ++b;
81
82 ASSERT_EQ(b, buffer.end());
83 }
84
TEST(BigBufferTest,PadAndAlignProperly)85 TEST(BigBufferTest, PadAndAlignProperly) {
86 BigBuffer buffer(16);
87
88 ASSERT_THAT(buffer.NextBlock<char>(2), NotNull());
89 ASSERT_EQ(2u, buffer.size());
90 buffer.Pad(2);
91 ASSERT_EQ(4u, buffer.size());
92 buffer.Align4();
93 ASSERT_EQ(4u, buffer.size());
94 buffer.Pad(2);
95 ASSERT_EQ(6u, buffer.size());
96 buffer.Align4();
97 ASSERT_EQ(8u, buffer.size());
98 }
99
100 } // namespace aapt
101