1 /*
2 * Copyright (C) 2014 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 "dictionary/utils/buffer_with_extendable_buffer.h"
18
19 #include <gtest/gtest.h>
20
21 namespace latinime {
22 namespace {
23
24 const int DEFAULT_MAX_BUFFER_SIZE = 1024;
25
TEST(BufferWithExtendablebufferTest,TestWriteAndRead)26 TEST(BufferWithExtendablebufferTest, TestWriteAndRead) {
27 BufferWithExtendableBuffer buffer(DEFAULT_MAX_BUFFER_SIZE);
28 int pos = 0;
29 // 1 byte
30 const uint32_t data_1 = 0xFF;
31 EXPECT_TRUE(buffer.writeUint(data_1, 1 /* size */, pos));
32 EXPECT_EQ(data_1, buffer.readUint(1, pos));
33 pos += 1;
34 // 2 byte
35 const uint32_t data_2 = 0xFFFF;
36 EXPECT_TRUE(buffer.writeUint(data_2, 2 /* size */, pos));
37 EXPECT_EQ(data_2, buffer.readUint(2, pos));
38 pos += 2;
39 // 3 byte
40 const uint32_t data_3 = 0xFFFFFF;
41 EXPECT_TRUE(buffer.writeUint(data_3, 3 /* size */, pos));
42 EXPECT_EQ(data_3, buffer.readUint(3, pos));
43 pos += 3;
44 // 4 byte
45 const uint32_t data_4 = 0xFFFFFFFF;
46 EXPECT_TRUE(buffer.writeUint(data_4, 4 /* size */, pos));
47 EXPECT_EQ(data_4, buffer.readUint(4, pos));
48 }
49
TEST(BufferWithExtendablebufferTest,TestExtend)50 TEST(BufferWithExtendablebufferTest, TestExtend) {
51 BufferWithExtendableBuffer buffer(DEFAULT_MAX_BUFFER_SIZE);
52 EXPECT_EQ(0, buffer.getTailPosition());
53 EXPECT_TRUE(buffer.writeUint(0xFF /* data */, 4 /* size */, 0 /* pos */));
54 EXPECT_EQ(4, buffer.getTailPosition());
55 EXPECT_TRUE(buffer.extend(8 /* size */));
56 EXPECT_EQ(12, buffer.getTailPosition());
57 EXPECT_TRUE(buffer.writeUint(0xFFFF /* data */, 4 /* size */, 8 /* pos */));
58 EXPECT_TRUE(buffer.writeUint(0xFF /* data */, 4 /* size */, 0 /* pos */));
59 }
60
TEST(BufferWithExtendablebufferTest,TestCopy)61 TEST(BufferWithExtendablebufferTest, TestCopy) {
62 BufferWithExtendableBuffer buffer(DEFAULT_MAX_BUFFER_SIZE);
63 EXPECT_TRUE(buffer.writeUint(0xFF /* data */, 4 /* size */, 0 /* pos */));
64 EXPECT_TRUE(buffer.writeUint(0xFFFF /* data */, 4 /* size */, 4 /* pos */));
65 BufferWithExtendableBuffer targetBuffer(DEFAULT_MAX_BUFFER_SIZE);
66 EXPECT_TRUE(targetBuffer.copy(&buffer));
67 EXPECT_EQ(0xFFu, targetBuffer.readUint(4 /* size */, 0 /* pos */));
68 EXPECT_EQ(0xFFFFu, targetBuffer.readUint(4 /* size */, 4 /* pos */));
69 }
70
TEST(BufferWithExtendablebufferTest,TestSizeLimit)71 TEST(BufferWithExtendablebufferTest, TestSizeLimit) {
72 BufferWithExtendableBuffer emptyBuffer(0 /* maxAdditionalBufferSize */);
73 EXPECT_FALSE(emptyBuffer.writeUint(0 /* data */, 1 /* size */, 0 /* pos */));
74 EXPECT_FALSE(emptyBuffer.extend(1 /* size */));
75
76 BufferWithExtendableBuffer smallBuffer(4 /* maxAdditionalBufferSize */);
77 EXPECT_TRUE(smallBuffer.writeUint(0 /* data */, 4 /* size */, 0 /* pos */));
78 EXPECT_FALSE(smallBuffer.writeUint(0 /* data */, 1 /* size */, 4 /* pos */));
79
80 EXPECT_TRUE(smallBuffer.copy(&emptyBuffer));
81 EXPECT_FALSE(emptyBuffer.copy(&smallBuffer));
82
83 BufferWithExtendableBuffer buffer(DEFAULT_MAX_BUFFER_SIZE);
84 EXPECT_FALSE(buffer.isNearSizeLimit());
85 int pos = 0;
86 while (!buffer.isNearSizeLimit()) {
87 EXPECT_TRUE(buffer.writeUintAndAdvancePosition(0 /* data */, 4 /* size */, &pos));
88 }
89 EXPECT_GT(pos, 0);
90 EXPECT_LE(pos, DEFAULT_MAX_BUFFER_SIZE);
91 }
92
93 } // namespace
94 } // namespace latinime
95