Sun, 24 Apr 2022 17:45:09 +0200
#170 add several more buffer tests
test/test_buffer.cpp | file | annotate | diff | comparison | revisions |
1.1 --- a/test/test_buffer.cpp Sun Apr 24 17:44:52 2022 +0200 1.2 +++ b/test/test_buffer.cpp Sun Apr 24 17:45:09 2022 +0200 1.3 @@ -31,44 +31,214 @@ 1.4 #include <gtest/gtest.h> 1.5 #include "util_allocator.h" 1.6 1.7 -class Buffer : public ::testing::Test { 1.8 -protected: 1.9 - void TearDown() override { 1.10 - EXPECT_TRUE(testingAllocator.verify()); 1.11 - } 1.12 - 1.13 - CxTestingAllocator testingAllocator; 1.14 -}; 1.15 - 1.16 -TEST_F(Buffer, WrapSpace) { 1.17 +TEST(BufferInit, WrapSpace) { 1.18 + CxTestingAllocator alloc; 1.19 CxBuffer buf; 1.20 - void *space = cxMalloc(&testingAllocator, 16); 1.21 - cxBufferInit(&buf, space, 16, &testingAllocator, CX_BUFFER_DEFAULT); 1.22 + void *space = cxMalloc(&alloc, 16); 1.23 + cxBufferInit(&buf, space, 16, &alloc, CX_BUFFER_DEFAULT); 1.24 EXPECT_EQ(buf.space, space); 1.25 EXPECT_EQ(buf.flags & CX_BUFFER_AUTO_EXTEND, 0); 1.26 EXPECT_EQ(buf.flags & CX_BUFFER_FREE_CONTENTS, 0); 1.27 EXPECT_EQ(buf.pos, 0); 1.28 EXPECT_EQ(buf.size, 0); 1.29 EXPECT_EQ(buf.capacity, 16); 1.30 - EXPECT_EQ(buf.allocator, &testingAllocator); 1.31 + EXPECT_EQ(buf.allocator, &alloc); 1.32 cxBufferDestroy(&buf); 1.33 - EXPECT_FALSE(testingAllocator.verify()); 1.34 - cxFree(&testingAllocator, space); 1.35 - EXPECT_TRUE(testingAllocator.verify()); 1.36 + EXPECT_FALSE(alloc.verify()); 1.37 + cxFree(&alloc, space); 1.38 + EXPECT_TRUE(alloc.verify()); 1.39 } 1.40 1.41 -TEST_F(Buffer, WrapSpaceAutoFree) { 1.42 +TEST(BufferInit, WrapSpaceAutoFree) { 1.43 + CxTestingAllocator alloc; 1.44 CxBuffer buf; 1.45 - void *space = cxMalloc(&testingAllocator, 16); 1.46 - cxBufferInit(&buf, space, 16, &testingAllocator, CX_BUFFER_FREE_CONTENTS); 1.47 + void *space = cxMalloc(&alloc, 16); 1.48 + cxBufferInit(&buf, space, 16, &alloc, CX_BUFFER_FREE_CONTENTS); 1.49 EXPECT_EQ(buf.space, space); 1.50 EXPECT_EQ(buf.flags & CX_BUFFER_AUTO_EXTEND, 0); 1.51 EXPECT_EQ(buf.flags & CX_BUFFER_FREE_CONTENTS, CX_BUFFER_FREE_CONTENTS); 1.52 EXPECT_EQ(buf.pos, 0); 1.53 EXPECT_EQ(buf.size, 0); 1.54 EXPECT_EQ(buf.capacity, 16); 1.55 - EXPECT_EQ(buf.allocator, &testingAllocator); 1.56 - EXPECT_FALSE(testingAllocator.verify()); 1.57 + EXPECT_EQ(buf.allocator, &alloc); 1.58 + EXPECT_FALSE(alloc.verify()); 1.59 cxBufferDestroy(&buf); 1.60 - EXPECT_TRUE(testingAllocator.verify()); 1.61 + EXPECT_TRUE(alloc.verify()); 1.62 } 1.63 + 1.64 +TEST(BufferInit, FreshSpace) { 1.65 + CxTestingAllocator alloc; 1.66 + CxBuffer buf; 1.67 + cxBufferInit(&buf, nullptr, 8, &alloc, CX_BUFFER_DEFAULT); 1.68 + EXPECT_NE(buf.space, nullptr); 1.69 + EXPECT_EQ(buf.flags & CX_BUFFER_AUTO_EXTEND, 0); 1.70 + EXPECT_EQ(buf.flags & CX_BUFFER_FREE_CONTENTS, CX_BUFFER_FREE_CONTENTS); 1.71 + EXPECT_EQ(buf.pos, 0); 1.72 + EXPECT_EQ(buf.size, 0); 1.73 + EXPECT_EQ(buf.capacity, 8); 1.74 + EXPECT_EQ(buf.allocator, &alloc); 1.75 + EXPECT_FALSE(alloc.verify()); // space is still allocated 1.76 + cxBufferDestroy(&buf); 1.77 + EXPECT_TRUE(alloc.verify()); 1.78 +} 1.79 + 1.80 +class BufferShiftFixture : public ::testing::Test { 1.81 +protected: 1.82 + void SetUp() override { 1.83 + ASSERT_TRUE(alloc.verify()); 1.84 + cxBufferInit(&buf, nullptr, 16, &alloc, CX_BUFFER_DEFAULT); 1.85 + memcpy(buf.space, "test____________", 16); 1.86 + buf.capacity = 8; // purposely pretend that the buffer has less capacity s.t. we can test beyond the range 1.87 + buf.pos = 4; 1.88 + buf.size = 4; 1.89 + } 1.90 + 1.91 + void TearDown() override { 1.92 + cxBufferDestroy(&buf); 1.93 + EXPECT_TRUE(alloc.verify()); 1.94 + } 1.95 + 1.96 + CxTestingAllocator alloc; 1.97 + CxBuffer buf{}; 1.98 +}; 1.99 + 1.100 +class BufferShiftLeft : public BufferShiftFixture { 1.101 +}; 1.102 + 1.103 +TEST_F(BufferShiftLeft, Zero) { 1.104 + ASSERT_EQ(buf.pos, 4); 1.105 + ASSERT_EQ(buf.size, 4); 1.106 + int ret = cxBufferShiftLeft(&buf, 0); 1.107 + EXPECT_EQ(ret, 0); 1.108 + EXPECT_EQ(buf.pos, 4); 1.109 + EXPECT_EQ(buf.size, 4); 1.110 + EXPECT_TRUE(memcmp(buf.space, "test________", 8) == 0); 1.111 +} 1.112 + 1.113 +TEST_F(BufferShiftLeft, Standard) { 1.114 + ASSERT_EQ(buf.pos, 4); 1.115 + ASSERT_EQ(buf.size, 4); 1.116 + int ret = cxBufferShiftLeft(&buf, 2); 1.117 + EXPECT_EQ(ret, 0); 1.118 + EXPECT_EQ(buf.pos, 2); 1.119 + EXPECT_EQ(buf.size, 2); 1.120 + EXPECT_TRUE(memcmp(buf.space, "stst________", 8) == 0); 1.121 +} 1.122 + 1.123 +TEST_F(BufferShiftLeft, Overshift) { 1.124 + ASSERT_LT(buf.pos, 6); 1.125 + ASSERT_LT(buf.size, 6); 1.126 + int ret = cxBufferShiftLeft(&buf, 6); 1.127 + EXPECT_EQ(ret, 0); 1.128 + EXPECT_EQ(buf.pos, 0); 1.129 + EXPECT_EQ(buf.size, 0); 1.130 + EXPECT_TRUE(memcmp(buf.space, "test________", 8) == 0); 1.131 +} 1.132 + 1.133 +TEST_F(BufferShiftLeft, OvershiftPosOnly) { 1.134 + buf.pos = 2; 1.135 + ASSERT_EQ(buf.size, 4); 1.136 + int ret = cxBufferShiftLeft(&buf, 3); 1.137 + EXPECT_EQ(ret, 0); 1.138 + EXPECT_EQ(buf.pos, 0); 1.139 + EXPECT_EQ(buf.size, 1); 1.140 + EXPECT_TRUE(memcmp(buf.space, "test________", 8) == 0); 1.141 +} 1.142 + 1.143 +TEST_F(BufferShiftLeft, OffsetInterface) { 1.144 + buf.pos = 3; 1.145 + ASSERT_EQ(buf.size, 4); 1.146 + int ret = cxBufferShift(&buf, -2); 1.147 + EXPECT_EQ(ret, 0); 1.148 + EXPECT_EQ(buf.pos, 1); 1.149 + EXPECT_EQ(buf.size, 2); 1.150 + EXPECT_TRUE(memcmp(buf.space, "stst________", 8) == 0); 1.151 +} 1.152 + 1.153 +class BufferShiftRight : public BufferShiftFixture { 1.154 +}; 1.155 + 1.156 +TEST_F(BufferShiftRight, Zero) { 1.157 + ASSERT_EQ(buf.pos, 4); 1.158 + ASSERT_EQ(buf.size, 4); 1.159 + int ret = cxBufferShiftRight(&buf, 0); 1.160 + EXPECT_EQ(ret, 0); 1.161 + EXPECT_EQ(buf.pos, 4); 1.162 + EXPECT_EQ(buf.size, 4); 1.163 + EXPECT_TRUE(memcmp(buf.space, "test________", 8) == 0); 1.164 +} 1.165 + 1.166 +TEST_F(BufferShiftRight, Standard) { 1.167 + ASSERT_EQ(buf.pos, 4); 1.168 + ASSERT_EQ(buf.size, 4); 1.169 + int ret = cxBufferShiftRight(&buf, 3); 1.170 + EXPECT_EQ(ret, 0); 1.171 + EXPECT_EQ(buf.pos, 7); 1.172 + EXPECT_EQ(buf.size, 7); 1.173 + EXPECT_TRUE(memcmp(buf.space, "testest_____", 8) == 0); 1.174 +} 1.175 + 1.176 +TEST_F(BufferShiftRight, OvershiftDiscard) { 1.177 + ASSERT_EQ(buf.pos, 4); 1.178 + ASSERT_EQ(buf.size, 4); 1.179 + ASSERT_EQ(buf.capacity, 8); 1.180 + int ret = cxBufferShiftRight(&buf, 6); 1.181 + EXPECT_EQ(ret, 0); 1.182 + EXPECT_EQ(buf.pos, 8); 1.183 + EXPECT_EQ(buf.size, 8); 1.184 + EXPECT_EQ(buf.capacity, 8); 1.185 + EXPECT_TRUE(memcmp(buf.space, "test__te____", 8) == 0); 1.186 +} 1.187 + 1.188 +TEST_F(BufferShiftRight, OvershiftExtend) { 1.189 + ASSERT_EQ(buf.pos, 4); 1.190 + ASSERT_EQ(buf.size, 4); 1.191 + ASSERT_EQ(buf.capacity, 8); 1.192 + buf.flags |= CX_BUFFER_AUTO_EXTEND; 1.193 + int ret = cxBufferShiftRight(&buf, 6); 1.194 + EXPECT_EQ(ret, 0); 1.195 + EXPECT_EQ(buf.pos, 10); 1.196 + EXPECT_EQ(buf.size, 10); 1.197 + EXPECT_GE(buf.capacity, 10); 1.198 + EXPECT_TRUE(memcmp(buf.space, "test__test__", 8) == 0); 1.199 +} 1.200 + 1.201 +TEST_F(BufferShiftRight, OffsetInterface) { 1.202 + buf.pos = 3; 1.203 + ASSERT_EQ(buf.size, 4); 1.204 + int ret = cxBufferShift(&buf, 2); 1.205 + EXPECT_EQ(ret, 0); 1.206 + EXPECT_EQ(buf.pos, 5); 1.207 + EXPECT_EQ(buf.size, 6); 1.208 + EXPECT_TRUE(memcmp(buf.space, "tetest______", 8) == 0); 1.209 +} 1.210 + 1.211 +TEST(BufferMinimumCapacity, Sufficient) { 1.212 + CxTestingAllocator alloc; 1.213 + auto space = cxMalloc(&alloc, 8); 1.214 + CxBuffer buf; 1.215 + cxBufferInit(&buf, space, 8, &alloc, CX_BUFFER_FREE_CONTENTS); 1.216 + memcpy(space, "Testing", 8); 1.217 + buf.size = 8; 1.218 + cxBufferMinimumCapacity(&buf, 6); 1.219 + EXPECT_EQ(buf.capacity, 8); 1.220 + EXPECT_EQ(buf.size, 8); 1.221 + EXPECT_TRUE(memcmp(buf.space, "Testing", 8) == 0); 1.222 + cxBufferDestroy(&buf); 1.223 + EXPECT_TRUE(alloc.verify()); 1.224 +} 1.225 + 1.226 +TEST(BufferMinimumCapacity, Extend) { 1.227 + CxTestingAllocator alloc; 1.228 + auto space = cxMalloc(&alloc, 8); 1.229 + CxBuffer buf; 1.230 + cxBufferInit(&buf, space, 8, &alloc, CX_BUFFER_FREE_CONTENTS); // NO auto extend! 1.231 + memcpy(space, "Testing", 8); 1.232 + buf.size = 8; 1.233 + cxBufferMinimumCapacity(&buf, 16); 1.234 + EXPECT_EQ(buf.capacity, 16); 1.235 + EXPECT_EQ(buf.size, 8); 1.236 + EXPECT_TRUE(memcmp(buf.space, "Testing", 8) == 0); 1.237 + cxBufferDestroy(&buf); 1.238 + EXPECT_TRUE(alloc.verify()); 1.239 +}