Sun, 01 May 2022 10:39:13 +0200
fix regression: nitems adjusted at the wrong location
530 | 1 | /* |
2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
3 | * | |
4 | * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved. | |
5 | * | |
6 | * Redistribution and use in source and binary forms, with or without | |
7 | * modification, are permitted provided that the following conditions are met: | |
8 | * | |
9 | * 1. Redistributions of source code must retain the above copyright | |
10 | * notice, this list of conditions and the following disclaimer. | |
11 | * | |
12 | * 2. Redistributions in binary form must reproduce the above copyright | |
13 | * notice, this list of conditions and the following disclaimer in the | |
14 | * documentation and/or other materials provided with the distribution. | |
15 | * | |
16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
26 | * POSSIBILITY OF SUCH DAMAGE. | |
27 | */ | |
28 | ||
29 | #include "cx/buffer.h" | |
30 | ||
31 | #include <gtest/gtest.h> | |
32 | #include "util_allocator.h" | |
33 | ||
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34 | static void expect_default_flush_config(CxBuffer *buf) { |
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35 | EXPECT_EQ(buf->flush_blkmax, 0); |
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36 | EXPECT_EQ(buf->flush_blksize, 4096); |
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37 | EXPECT_EQ(buf->flush_threshold, SIZE_MAX); |
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38 | EXPECT_EQ(buf->flush_func, nullptr); |
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39 | } |
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40 | |
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41 | TEST(BufferInit, WrapSpace) { |
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42 | CxTestingAllocator alloc; |
530 | 43 | CxBuffer buf; |
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44 | void *space = cxMalloc(&alloc, 16); |
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45 | cxBufferInit(&buf, space, 16, &alloc, CX_BUFFER_DEFAULT); |
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46 | expect_default_flush_config(&buf); |
530 | 47 | EXPECT_EQ(buf.space, space); |
48 | EXPECT_EQ(buf.flags & CX_BUFFER_AUTO_EXTEND, 0); | |
49 | EXPECT_EQ(buf.flags & CX_BUFFER_FREE_CONTENTS, 0); | |
50 | EXPECT_EQ(buf.pos, 0); | |
51 | EXPECT_EQ(buf.size, 0); | |
52 | EXPECT_EQ(buf.capacity, 16); | |
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53 | EXPECT_EQ(buf.allocator, &alloc); |
530 | 54 | cxBufferDestroy(&buf); |
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55 | EXPECT_FALSE(alloc.verify()); |
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56 | cxFree(&alloc, space); |
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57 | EXPECT_TRUE(alloc.verify()); |
530 | 58 | } |
59 | ||
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60 | TEST(BufferInit, WrapSpaceAutoExtend) { |
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61 | CxTestingAllocator alloc; |
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62 | CxBuffer buf; |
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63 | void *space = cxMalloc(&alloc, 16); |
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64 | cxBufferInit(&buf, space, 16, &alloc, CX_BUFFER_AUTO_EXTEND); |
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65 | expect_default_flush_config(&buf); |
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66 | EXPECT_EQ(buf.space, space); |
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67 | EXPECT_EQ(buf.flags & CX_BUFFER_AUTO_EXTEND, CX_BUFFER_AUTO_EXTEND); |
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68 | EXPECT_EQ(buf.flags & CX_BUFFER_FREE_CONTENTS, 0); |
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69 | EXPECT_EQ(buf.pos, 0); |
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70 | EXPECT_EQ(buf.size, 0); |
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71 | EXPECT_EQ(buf.capacity, 16); |
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72 | EXPECT_EQ(buf.allocator, &alloc); |
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73 | cxBufferDestroy(&buf); |
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74 | EXPECT_FALSE(alloc.verify()); |
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75 | cxFree(&alloc, space); |
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76 | EXPECT_TRUE(alloc.verify()); |
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77 | } |
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78 | |
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79 | TEST(BufferInit, WrapSpaceAutoFree) { |
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80 | CxTestingAllocator alloc; |
530 | 81 | CxBuffer buf; |
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82 | void *space = cxMalloc(&alloc, 16); |
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83 | cxBufferInit(&buf, space, 16, &alloc, CX_BUFFER_FREE_CONTENTS); |
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84 | expect_default_flush_config(&buf); |
530 | 85 | EXPECT_EQ(buf.space, space); |
86 | EXPECT_EQ(buf.flags & CX_BUFFER_AUTO_EXTEND, 0); | |
87 | EXPECT_EQ(buf.flags & CX_BUFFER_FREE_CONTENTS, CX_BUFFER_FREE_CONTENTS); | |
88 | EXPECT_EQ(buf.pos, 0); | |
89 | EXPECT_EQ(buf.size, 0); | |
90 | EXPECT_EQ(buf.capacity, 16); | |
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91 | EXPECT_EQ(buf.allocator, &alloc); |
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92 | EXPECT_FALSE(alloc.verify()); |
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93 | cxBufferDestroy(&buf); |
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94 | EXPECT_TRUE(alloc.verify()); |
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95 | } |
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96 | |
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97 | TEST(BufferInit, FreshSpace) { |
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98 | CxTestingAllocator alloc; |
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99 | CxBuffer buf; |
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100 | cxBufferInit(&buf, nullptr, 8, &alloc, CX_BUFFER_DEFAULT); |
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101 | expect_default_flush_config(&buf); |
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102 | EXPECT_NE(buf.space, nullptr); |
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103 | EXPECT_EQ(buf.flags & CX_BUFFER_AUTO_EXTEND, 0); |
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104 | EXPECT_EQ(buf.flags & CX_BUFFER_FREE_CONTENTS, CX_BUFFER_FREE_CONTENTS); |
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105 | EXPECT_EQ(buf.pos, 0); |
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106 | EXPECT_EQ(buf.size, 0); |
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107 | EXPECT_EQ(buf.capacity, 8); |
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108 | EXPECT_EQ(buf.allocator, &alloc); |
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109 | EXPECT_FALSE(alloc.verify()); // space is still allocated |
530 | 110 | cxBufferDestroy(&buf); |
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111 | EXPECT_TRUE(alloc.verify()); |
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112 | } |
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113 | |
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114 | class BufferShiftFixture : public ::testing::Test { |
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115 | protected: |
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116 | void SetUp() override { |
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117 | ASSERT_TRUE(alloc.verify()); |
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118 | cxBufferInit(&buf, nullptr, 16, &alloc, CX_BUFFER_DEFAULT); |
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119 | memcpy(buf.space, "test____________", 16); |
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120 | buf.capacity = 8; // purposely pretend that the buffer has less capacity s.t. we can test beyond the range |
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121 | buf.pos = 4; |
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122 | buf.size = 4; |
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123 | } |
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124 | |
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125 | void TearDown() override { |
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126 | cxBufferDestroy(&buf); |
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127 | EXPECT_TRUE(alloc.verify()); |
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128 | } |
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129 | |
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130 | CxTestingAllocator alloc; |
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131 | CxBuffer buf{}; |
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132 | }; |
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133 | |
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134 | class BufferShiftLeft : public BufferShiftFixture { |
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135 | }; |
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136 | |
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137 | TEST_F(BufferShiftLeft, Zero) { |
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138 | ASSERT_EQ(buf.pos, 4); |
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139 | ASSERT_EQ(buf.size, 4); |
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140 | int ret = cxBufferShiftLeft(&buf, 0); |
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141 | EXPECT_EQ(ret, 0); |
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142 | EXPECT_EQ(buf.pos, 4); |
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143 | EXPECT_EQ(buf.size, 4); |
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144 | EXPECT_TRUE(memcmp(buf.space, "test________", 8) == 0); |
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145 | } |
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146 | |
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147 | TEST_F(BufferShiftLeft, Standard) { |
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148 | ASSERT_EQ(buf.pos, 4); |
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149 | ASSERT_EQ(buf.size, 4); |
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150 | int ret = cxBufferShiftLeft(&buf, 2); |
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151 | EXPECT_EQ(ret, 0); |
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152 | EXPECT_EQ(buf.pos, 2); |
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153 | EXPECT_EQ(buf.size, 2); |
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154 | EXPECT_TRUE(memcmp(buf.space, "stst________", 8) == 0); |
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155 | } |
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156 | |
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157 | TEST_F(BufferShiftLeft, Overshift) { |
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158 | ASSERT_LT(buf.pos, 6); |
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159 | ASSERT_LT(buf.size, 6); |
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160 | int ret = cxBufferShiftLeft(&buf, 6); |
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161 | EXPECT_EQ(ret, 0); |
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162 | EXPECT_EQ(buf.pos, 0); |
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163 | EXPECT_EQ(buf.size, 0); |
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164 | EXPECT_TRUE(memcmp(buf.space, "test________", 8) == 0); |
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165 | } |
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166 | |
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167 | TEST_F(BufferShiftLeft, OvershiftPosOnly) { |
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168 | buf.pos = 2; |
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169 | ASSERT_EQ(buf.size, 4); |
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170 | int ret = cxBufferShiftLeft(&buf, 3); |
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171 | EXPECT_EQ(ret, 0); |
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172 | EXPECT_EQ(buf.pos, 0); |
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173 | EXPECT_EQ(buf.size, 1); |
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174 | EXPECT_TRUE(memcmp(buf.space, "test________", 8) == 0); |
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175 | } |
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176 | |
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177 | TEST_F(BufferShiftLeft, OffsetInterface) { |
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178 | buf.pos = 3; |
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179 | ASSERT_EQ(buf.size, 4); |
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180 | int ret = cxBufferShift(&buf, -2); |
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181 | EXPECT_EQ(ret, 0); |
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182 | EXPECT_EQ(buf.pos, 1); |
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183 | EXPECT_EQ(buf.size, 2); |
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184 | EXPECT_TRUE(memcmp(buf.space, "stst________", 8) == 0); |
530 | 185 | } |
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186 | |
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187 | class BufferShiftRight : public BufferShiftFixture { |
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188 | }; |
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189 | |
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190 | TEST_F(BufferShiftRight, Zero) { |
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191 | ASSERT_EQ(buf.pos, 4); |
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192 | ASSERT_EQ(buf.size, 4); |
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193 | int ret = cxBufferShiftRight(&buf, 0); |
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194 | EXPECT_EQ(ret, 0); |
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195 | EXPECT_EQ(buf.pos, 4); |
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196 | EXPECT_EQ(buf.size, 4); |
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197 | EXPECT_TRUE(memcmp(buf.space, "test________", 8) == 0); |
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198 | } |
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199 | |
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200 | TEST_F(BufferShiftRight, Standard) { |
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201 | ASSERT_EQ(buf.pos, 4); |
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202 | ASSERT_EQ(buf.size, 4); |
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203 | int ret = cxBufferShiftRight(&buf, 3); |
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204 | EXPECT_EQ(ret, 0); |
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205 | EXPECT_EQ(buf.pos, 7); |
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206 | EXPECT_EQ(buf.size, 7); |
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207 | EXPECT_TRUE(memcmp(buf.space, "testest_____", 8) == 0); |
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208 | } |
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209 | |
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210 | TEST_F(BufferShiftRight, OvershiftDiscard) { |
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211 | ASSERT_EQ(buf.pos, 4); |
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212 | ASSERT_EQ(buf.size, 4); |
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213 | ASSERT_EQ(buf.capacity, 8); |
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214 | int ret = cxBufferShiftRight(&buf, 6); |
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215 | EXPECT_EQ(ret, 0); |
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216 | EXPECT_EQ(buf.pos, 8); |
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217 | EXPECT_EQ(buf.size, 8); |
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218 | EXPECT_EQ(buf.capacity, 8); |
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219 | EXPECT_TRUE(memcmp(buf.space, "test__te____", 8) == 0); |
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220 | } |
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221 | |
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222 | TEST_F(BufferShiftRight, OvershiftExtend) { |
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223 | ASSERT_EQ(buf.pos, 4); |
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224 | ASSERT_EQ(buf.size, 4); |
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225 | ASSERT_EQ(buf.capacity, 8); |
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226 | buf.flags |= CX_BUFFER_AUTO_EXTEND; |
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227 | int ret = cxBufferShiftRight(&buf, 6); |
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228 | EXPECT_EQ(ret, 0); |
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229 | EXPECT_EQ(buf.pos, 10); |
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230 | EXPECT_EQ(buf.size, 10); |
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231 | EXPECT_GE(buf.capacity, 10); |
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232 | EXPECT_TRUE(memcmp(buf.space, "test__test__", 8) == 0); |
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233 | } |
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234 | |
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235 | TEST_F(BufferShiftRight, OffsetInterface) { |
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236 | buf.pos = 3; |
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237 | ASSERT_EQ(buf.size, 4); |
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238 | int ret = cxBufferShift(&buf, 2); |
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239 | EXPECT_EQ(ret, 0); |
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240 | EXPECT_EQ(buf.pos, 5); |
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241 | EXPECT_EQ(buf.size, 6); |
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242 | EXPECT_TRUE(memcmp(buf.space, "tetest______", 8) == 0); |
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243 | } |
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244 | |
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245 | TEST(BufferMinimumCapacity, Sufficient) { |
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246 | CxTestingAllocator alloc; |
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247 | auto space = cxMalloc(&alloc, 8); |
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248 | CxBuffer buf; |
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249 | cxBufferInit(&buf, space, 8, &alloc, CX_BUFFER_FREE_CONTENTS); |
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250 | memcpy(space, "Testing", 8); |
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251 | buf.size = 8; |
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252 | cxBufferMinimumCapacity(&buf, 6); |
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253 | EXPECT_EQ(buf.capacity, 8); |
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254 | EXPECT_EQ(buf.size, 8); |
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255 | EXPECT_TRUE(memcmp(buf.space, "Testing", 8) == 0); |
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256 | cxBufferDestroy(&buf); |
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257 | EXPECT_TRUE(alloc.verify()); |
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258 | } |
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259 | |
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260 | TEST(BufferMinimumCapacity, Extend) { |
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261 | CxTestingAllocator alloc; |
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262 | auto space = cxMalloc(&alloc, 8); |
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263 | CxBuffer buf; |
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264 | cxBufferInit(&buf, space, 8, &alloc, CX_BUFFER_FREE_CONTENTS); // NO auto extend! |
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265 | memcpy(space, "Testing", 8); |
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266 | buf.size = 8; |
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267 | cxBufferMinimumCapacity(&buf, 16); |
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268 | EXPECT_EQ(buf.capacity, 16); |
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269 | EXPECT_EQ(buf.size, 8); |
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270 | EXPECT_TRUE(memcmp(buf.space, "Testing", 8) == 0); |
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271 | cxBufferDestroy(&buf); |
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272 | EXPECT_TRUE(alloc.verify()); |
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273 | } |
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274 | |
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275 | TEST(BufferClear, Test) { |
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276 | char space[16]; |
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277 | strcpy(space, "clear test"); |
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278 | CxBuffer buf; |
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279 | cxBufferInit(&buf, space, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT); |
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280 | ASSERT_EQ(buf.size, 0); |
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281 | // only clear the used part of the buffer |
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282 | cxBufferClear(&buf); |
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283 | EXPECT_EQ(memcmp(space, "clear test", 10), 0); |
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284 | buf.size = 5; |
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285 | buf.pos = 3; |
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286 | cxBufferClear(&buf); |
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287 | EXPECT_EQ(memcmp(space, "\0\0\0\0\0 test", 10), 0); |
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288 | EXPECT_EQ(buf.size, 0); |
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289 | EXPECT_EQ(buf.pos, 0); |
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290 | cxBufferDestroy(&buf); |
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291 | } |
538
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292 | |
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293 | class BufferWrite : public ::testing::Test { |
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294 | protected: |
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295 | CxBuffer buf{}; |
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296 | |
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297 | void SetUp() override { |
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298 | cxBufferInit(&buf, nullptr, 16, cxDefaultAllocator, CX_BUFFER_DEFAULT); |
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299 | buf.capacity = 8; // artificially reduce capacity to check OOB writes |
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300 | memset(buf.space, 0, 16); |
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301 | memcpy(buf.space, "prep", 4); |
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302 | buf.size = buf.pos = 4; |
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303 | } |
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304 | |
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305 | void TearDown() override { |
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306 | cxBufferDestroy(&buf); |
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307 | } |
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308 | }; |
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309 | |
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310 | TEST_F(BufferWrite, SizeOneFit) { |
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311 | const char *data = "test"; |
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312 | ASSERT_EQ(buf.capacity, 8); |
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313 | ASSERT_EQ(buf.pos, 4); |
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314 | size_t written = cxBufferWrite(data, 1, 4, &buf); |
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315 | EXPECT_EQ(written, 4); |
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316 | EXPECT_EQ(buf.size, 8); |
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317 | EXPECT_EQ(buf.pos, 8); |
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318 | EXPECT_EQ(buf.capacity, 8); |
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319 | EXPECT_EQ(memcmp(buf.space, "preptest", 8), 0); |
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320 | } |
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321 | |
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322 | TEST_F(BufferWrite, SizeOneOverwrite) { |
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323 | |
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324 | } |
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325 | |
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326 | TEST_F(BufferWrite, SizeOnePartialOverwrite) { |
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327 | |
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328 | } |
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329 | |
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330 | TEST_F(BufferWrite, SizeOneDiscard) { |
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331 | const char *data = "testing"; |
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332 | ASSERT_EQ(buf.capacity, 8); |
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333 | ASSERT_EQ(buf.pos, 4); |
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334 | size_t written = cxBufferWrite(data, 1, 7, &buf); |
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335 | EXPECT_EQ(written, 4); |
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336 | EXPECT_EQ(buf.size, 8); |
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337 | EXPECT_EQ(buf.pos, 8); |
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338 | EXPECT_EQ(buf.capacity, 8); |
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339 | EXPECT_EQ(memcmp(buf.space, "preptest\0", 9), 0); |
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340 | } |
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341 | |
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342 | TEST_F(BufferWrite, SizeOneExtend) { |
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343 | buf.flags |= CX_BUFFER_AUTO_EXTEND; |
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344 | const char *data = "testing"; |
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345 | ASSERT_EQ(buf.capacity, 8); |
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346 | ASSERT_EQ(buf.pos, 4); |
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347 | size_t written = cxBufferWrite(data, 1, 7, &buf); |
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348 | EXPECT_EQ(written, 7); |
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349 | EXPECT_EQ(buf.size, 11); |
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350 | EXPECT_EQ(buf.pos, 11); |
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351 | EXPECT_GE(buf.capacity, 11); |
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352 | EXPECT_EQ(memcmp(buf.space, "preptesting", 11), 0); |
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353 | } |
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354 | |
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355 | TEST_F(BufferWrite, MultibyteOverwrite) { |
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356 | |
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357 | } |
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358 | |
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359 | TEST_F(BufferWrite, MultibytePartialOverwrite) { |
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360 | |
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361 | } |
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362 | |
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363 | TEST_F(BufferWrite, MultibyteFit) { |
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364 | |
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365 | } |
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366 | |
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367 | TEST_F(BufferWrite, MultibyteDiscard) { |
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368 | // remember: whole elements are discarded if they do not fit |
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369 | } |
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370 | |
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371 | TEST_F(BufferWrite, MultibyteExtend) { |
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372 | |
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373 | } |
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374 | |
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375 | TEST_F(BufferWrite, PutcWrapperFit) { |
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376 | |
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377 | } |
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378 | |
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379 | TEST_F(BufferWrite, PutcWrapperOverwrite) { |
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380 | |
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381 | } |
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382 | |
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383 | TEST_F(BufferWrite, PutcWrapperPartialOverwrite) { |
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384 | |
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385 | } |
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386 | |
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387 | TEST_F(BufferWrite, PutcWrapperDiscard) { |
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388 | |
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389 | } |
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390 | |
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391 | TEST_F(BufferWrite, PutcWrapperExtend) { |
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392 | |
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393 | } |
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394 | |
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395 | TEST_F(BufferWrite, PutStringWrapperFit) { |
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396 | |
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397 | } |
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398 | |
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399 | TEST_F(BufferWrite, PutStringWrapperOverwrite) { |
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400 | |
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401 | } |
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402 | |
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403 | TEST_F(BufferWrite, PutStringWrapperPartialOverwrite) { |
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404 | |
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405 | } |
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406 | |
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407 | TEST_F(BufferWrite, PutStringWrapperDiscard) { |
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408 | |
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409 | } |
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410 | |
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411 | TEST_F(BufferWrite, PutStringWrapperExtend) { |
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412 | |
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413 | } |