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 <gtest/gtest.h>
20
21namespace aapt {
22
23TEST(BigBufferTest, AllocateSingleBlock) {
24    BigBuffer buffer(4);
25
26    EXPECT_NE(nullptr, buffer.nextBlock<char>(2));
27    EXPECT_EQ(2u, buffer.size());
28}
29
30TEST(BigBufferTest, ReturnSameBlockIfNextAllocationFits) {
31    BigBuffer buffer(16);
32
33    char* b1 = buffer.nextBlock<char>(8);
34    EXPECT_NE(nullptr, b1);
35
36    char* b2 = buffer.nextBlock<char>(4);
37    EXPECT_NE(nullptr, b2);
38
39    EXPECT_EQ(b1 + 8, b2);
40}
41
42TEST(BigBufferTest, AllocateExactSizeBlockIfLargerThanBlockSize) {
43    BigBuffer buffer(16);
44
45    EXPECT_NE(nullptr, buffer.nextBlock<char>(32));
46    EXPECT_EQ(32u, buffer.size());
47}
48
49TEST(BigBufferTest, AppendAndMoveBlock) {
50    BigBuffer buffer(16);
51
52    uint32_t* b1 = buffer.nextBlock<uint32_t>();
53    ASSERT_NE(nullptr, b1);
54    *b1 = 33;
55
56    {
57        BigBuffer buffer2(16);
58        b1 = buffer2.nextBlock<uint32_t>();
59        ASSERT_NE(nullptr, b1);
60        *b1 = 44;
61
62        buffer.appendBuffer(std::move(buffer2));
63        EXPECT_EQ(0u, buffer2.size());
64        EXPECT_EQ(buffer2.begin(), buffer2.end());
65    }
66
67    EXPECT_EQ(2 * sizeof(uint32_t), buffer.size());
68
69    auto b = buffer.begin();
70    ASSERT_NE(b, buffer.end());
71    ASSERT_EQ(sizeof(uint32_t), b->size);
72    ASSERT_EQ(33u, *reinterpret_cast<uint32_t*>(b->buffer.get()));
73    ++b;
74
75    ASSERT_NE(b, buffer.end());
76    ASSERT_EQ(sizeof(uint32_t), b->size);
77    ASSERT_EQ(44u, *reinterpret_cast<uint32_t*>(b->buffer.get()));
78    ++b;
79
80    ASSERT_EQ(b, buffer.end());
81}
82
83TEST(BigBufferTest, PadAndAlignProperly) {
84    BigBuffer buffer(16);
85
86    ASSERT_NE(buffer.nextBlock<char>(2), nullptr);
87    ASSERT_EQ(2u, buffer.size());
88    buffer.pad(2);
89    ASSERT_EQ(4u, buffer.size());
90    buffer.align4();
91    ASSERT_EQ(4u, buffer.size());
92    buffer.pad(2);
93    ASSERT_EQ(6u, buffer.size());
94    buffer.align4();
95    ASSERT_EQ(8u, buffer.size());
96}
97
98} // namespace aapt
99