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 "androidfw/BigBuffer.h"
18
19 #include "gmock/gmock.h"
20 #include "gtest/gtest.h"
21
22 using ::testing::NotNull;
23
24 namespace android {
25
TEST(BigBufferTest,AllocateSingleBlock)26 TEST(BigBufferTest, AllocateSingleBlock) {
27 BigBuffer buffer(4);
28
29 EXPECT_THAT(buffer.NextBlock<char>(2), NotNull());
30 EXPECT_EQ(2u, buffer.size());
31 }
32
TEST(BigBufferTest,ReturnSameBlockIfNextAllocationFits)33 TEST(BigBufferTest, ReturnSameBlockIfNextAllocationFits) {
34 BigBuffer buffer(16);
35
36 char* b1 = buffer.NextBlock<char>(8);
37 EXPECT_THAT(b1, NotNull());
38
39 char* b2 = buffer.NextBlock<char>(4);
40 EXPECT_THAT(b2, NotNull());
41
42 EXPECT_EQ(b1 + 8, b2);
43 }
44
TEST(BigBufferTest,AllocateExactSizeBlockIfLargerThanBlockSize)45 TEST(BigBufferTest, AllocateExactSizeBlockIfLargerThanBlockSize) {
46 BigBuffer buffer(16);
47
48 EXPECT_THAT(buffer.NextBlock<char>(32), NotNull());
49 EXPECT_EQ(32u, buffer.size());
50 }
51
TEST(BigBufferTest,AppendAndMoveBlock)52 TEST(BigBufferTest, AppendAndMoveBlock) {
53 BigBuffer buffer(16);
54
55 uint32_t* b1 = buffer.NextBlock<uint32_t>();
56 ASSERT_THAT(b1, NotNull());
57 *b1 = 33;
58
59 {
60 BigBuffer buffer2(16);
61 b1 = buffer2.NextBlock<uint32_t>();
62 ASSERT_THAT(b1, NotNull());
63 *b1 = 44;
64
65 buffer.AppendBuffer(std::move(buffer2));
66 EXPECT_EQ(0u, buffer2.size()); // NOLINT
67 EXPECT_EQ(buffer2.begin(), buffer2.end());
68 }
69
70 EXPECT_EQ(2 * sizeof(uint32_t), buffer.size());
71
72 auto b = buffer.begin();
73 ASSERT_NE(b, buffer.end());
74 ASSERT_EQ(sizeof(uint32_t), b->size);
75 ASSERT_EQ(33u, *reinterpret_cast<uint32_t*>(b->buffer.get()));
76 ++b;
77
78 ASSERT_NE(b, buffer.end());
79 ASSERT_EQ(sizeof(uint32_t), b->size);
80 ASSERT_EQ(44u, *reinterpret_cast<uint32_t*>(b->buffer.get()));
81 ++b;
82
83 ASSERT_EQ(b, buffer.end());
84 }
85
TEST(BigBufferTest,PadAndAlignProperly)86 TEST(BigBufferTest, PadAndAlignProperly) {
87 BigBuffer buffer(16);
88
89 ASSERT_THAT(buffer.NextBlock<char>(2), NotNull());
90 ASSERT_EQ(2u, buffer.size());
91 buffer.Pad(2);
92 ASSERT_EQ(4u, buffer.size());
93 buffer.Align4();
94 ASSERT_EQ(4u, buffer.size());
95 buffer.Pad(2);
96 ASSERT_EQ(6u, buffer.size());
97 buffer.Align4();
98 ASSERT_EQ(8u, buffer.size());
99 }
100
101 } // namespace android
102