1 /*
2 * Copyright 2011 Google Inc. All Rights Reserved.
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 <stdio.h>
18
19 #include "gtest/gtest.h"
20 #include "sfntly/data/memory_byte_array.h"
21 #include "sfntly/data/growable_memory_byte_array.h"
22
23 namespace sfntly {
24 namespace byte_array_test {
25
26 const int32_t BYTE_ARRAY_SIZES[] =
27 {1, 7, 127, 128, 129, 255, 256, 257, 666, 1023, 10000, 0xffff, 0x10000};
28
FillTestByteArray(ByteArray * ba,int32_t size)29 void FillTestByteArray(ByteArray* ba, int32_t size) {
30 for (int32_t i = 0; i < size; ++i) {
31 ba->Put(i, (byte_t)(i % 256));
32 }
33 }
34
ReadByteArrayWithBuffer(ByteArray * ba,ByteVector * buffer,ByteVector * b)35 void ReadByteArrayWithBuffer(ByteArray* ba, ByteVector* buffer, ByteVector* b) {
36 b->resize(ba->Length());
37 int32_t index = 0;
38 while (index < ba->Length()) {
39 int32_t bytes_read = ba->Get(index, buffer);
40 std::copy(buffer->begin(), buffer->begin() + bytes_read,
41 b->begin() + index);
42 index += bytes_read;
43 }
44 }
45
ReadByteArrayWithSlidingWindow(ByteArray * ba,int window_size,ByteVector * b)46 void ReadByteArrayWithSlidingWindow(ByteArray* ba, int window_size,
47 ByteVector* b) {
48 b->resize(ba->Length());
49 int32_t index = 0;
50 int32_t actual_window_size = window_size;
51 while (index < ba->Length()) {
52 actual_window_size =
53 std::min<int32_t>(actual_window_size, b->size() - index);
54 int32_t bytes_read = ba->Get(index, &((*b)[0]), index, actual_window_size);
55 index += bytes_read;
56 }
57 }
58
ReadComparison(ByteArray * ba1,ByteArray * ba2)59 bool ReadComparison(ByteArray* ba1, ByteArray* ba2) {
60 // single byte reads
61 for (int i = 0; i < ba1->Length(); ++i) {
62 EXPECT_EQ(ba1->Get(i), ba2->Get(i));
63 }
64
65 ByteVector b1, b2;
66 // buffer reads
67 int increments = std::max<int32_t>(ba1->Length() / 11, 1);
68 for (int buffer_size = 1; buffer_size < ba1->Length();
69 buffer_size += increments) {
70 ByteVector buffer(buffer_size);
71 ReadByteArrayWithBuffer(ba1, &buffer, &b1);
72 ReadByteArrayWithBuffer(ba2, &buffer, &b2);
73 EXPECT_GT(b1.size(), static_cast<size_t>(0));
74 EXPECT_EQ(b1.size(), b2.size());
75 EXPECT_TRUE(std::equal(b1.begin(), b1.end(), b2.begin()));
76 }
77
78 // sliding window reads
79 b1.clear();
80 b2.clear();
81 for (int window_size = 1; window_size < ba1->Length();
82 window_size += increments) {
83 ReadByteArrayWithSlidingWindow(ba1, window_size, &b1);
84 ReadByteArrayWithSlidingWindow(ba2, window_size, &b2);
85 EXPECT_GT(b1.size(), static_cast<size_t>(0));
86 EXPECT_EQ(b1.size(), b2.size());
87 EXPECT_TRUE(std::equal(b1.begin(), b1.end(), b2.begin()));
88 }
89
90 return true;
91 }
92
CopyTest(ByteArray * ba)93 bool CopyTest(ByteArray* ba) {
94 ByteArrayPtr fixed_copy = new MemoryByteArray(ba->Length());
95 ba->CopyTo(fixed_copy);
96 EXPECT_EQ(ba->Length(), fixed_copy->Length());
97 EXPECT_TRUE(ReadComparison(ba, fixed_copy));
98
99 ByteArrayPtr growable_copy = new GrowableMemoryByteArray();
100 ba->CopyTo(growable_copy);
101 EXPECT_EQ(ba->Length(), growable_copy->Length());
102 EXPECT_TRUE(ReadComparison(ba, growable_copy));
103
104 return true;
105 }
106
ByteArrayTester(ByteArray * ba)107 bool ByteArrayTester(ByteArray* ba) {
108 return CopyTest(ba);
109 }
110
111 } // namespace byte_array_test
112
TestMemoryByteArray()113 bool TestMemoryByteArray() {
114 fprintf(stderr, "fixed mem: size ");
115 for (size_t i = 0;
116 i < sizeof(byte_array_test::BYTE_ARRAY_SIZES) / sizeof(int32_t); ++i) {
117 int32_t size = byte_array_test::BYTE_ARRAY_SIZES[i];
118 fprintf(stderr, "%d ", size);
119 ByteArrayPtr ba = new MemoryByteArray(size);
120 byte_array_test::FillTestByteArray(ba, size);
121 EXPECT_TRUE(byte_array_test::ByteArrayTester(ba));
122 }
123 fprintf(stderr, "\n");
124 return true;
125 }
126
TestGrowableMemoryByteArray()127 bool TestGrowableMemoryByteArray() {
128 fprintf(stderr, "growable mem: size ");
129 for (size_t i = 0;
130 i < sizeof(byte_array_test::BYTE_ARRAY_SIZES) / sizeof(int32_t); ++i) {
131 int32_t size = byte_array_test::BYTE_ARRAY_SIZES[i];
132 fprintf(stderr, "%d ", size);
133 ByteArrayPtr ba = new GrowableMemoryByteArray();
134 byte_array_test::FillTestByteArray(ba, size);
135 EXPECT_TRUE(byte_array_test::ByteArrayTester(ba));
136 }
137 fprintf(stderr, "\n");
138 return true;
139 }
140
141 } // namespace sfntly
142
TEST(ByteArray,All)143 TEST(ByteArray, All) {
144 ASSERT_TRUE(sfntly::TestMemoryByteArray());
145 ASSERT_TRUE(sfntly::TestGrowableMemoryByteArray());
146 }
147