Skip to content
Navigation Menu
{{ message }}
-
Notifications
You must be signed in to change notification settings - Fork 8
Expand file tree
/
Copy pathStringBlockTests.cpp
More file actions
247 lines (201 loc) · 9.1 KB
/
Copy pathStringBlockTests.cpp
File metadata and controls
247 lines (201 loc) · 9.1 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
#include <cstddef>
#include <limits>
#include <string>
#include <gtest/gtest.h>
#include <StringPool.h>
#include "Common.h"
template <typename T>
class StringBlockTest : public testing::Test {};
template <typename T>
class StringBlockOfZeroCapacity : public testing::Test {
protected:
T block{ 0 };
};
template <typename T>
class StringBlockOfCapacityOfOne : public testing::Test {
protected:
T block{ 1 };
};
template <typename T>
class StringBlockOfNonzeroCapacity : public testing::Test {
protected:
static constexpr std::size_t capacity = 123;
static_assert(capacity > 0);
T block{ capacity };
};
using TypesToTest = testing::Types<
StringBlock<char, false>, StringBlock<char, true>,
StringBlock<signed char, false>, StringBlock<signed char, true>,
StringBlock<unsigned char, false>, StringBlock<unsigned char, true>,
StringBlock<wchar_t, false>, StringBlock<wchar_t, true>,
#ifdef __cpp_lib_char8_t
StringBlock<char8_t, false>, StringBlock<char8_t, true>,
#endif
StringBlock<char16_t, false>, StringBlock<char16_t, true>,
StringBlock<char32_t, false>, StringBlock<char32_t, true>
>;
TYPED_TEST_SUITE(StringBlockTest, TypesToTest, );
TYPED_TEST(StringBlockTest, ConstructorCanThrowBadAllocForZeroCapacity) {
try {
TypeParam block{ 0 };
} catch (const std::bad_alloc&) {
SUCCEED();
}
}
TYPED_TEST(StringBlockTest, ConstructorCanThrowBadAllocForNonZeroCapacity) {
try {
TypeParam block{ 500 };
} catch (const std::bad_alloc&) {
SUCCEED();
}
}
TYPED_TEST(StringBlockTest, ConstructorCanThrowBadAllocForMaxCapacity) {
try {
TypeParam block{ std::numeric_limits<std::size_t>::max() };
} catch (const std::bad_alloc&) {
SUCCEED();
}
}
TYPED_TEST(StringBlockTest, SwappingTwoBlocksSwapsFreeSpace) {
TypeParam block1{ 20 }, block2{ 30 };
(void)block1.addString(randomStringOfLength<typename TypeParam::StringType::value_type>(12));
(void)block2.addString(randomStringOfLength<typename TypeParam::StringType::value_type>(16));
const auto formerFreeSpace1 = block1.getFreeSpace(), formerFreeSpace2 = block2.getFreeSpace();
swap(block1, block2);
ASSERT_TRUE(block1.getFreeSpace() == formerFreeSpace2 && block2.getFreeSpace() == formerFreeSpace1);
}
TYPED_TEST(StringBlockTest, SwappingTwoBlocksSwapsMemory) {
TypeParam block1{ 0 }, block2{ 100 };
swap(block1, block2);
(void)block1.addString(randomStringOfLength<typename TypeParam::StringType::value_type>(70));
SUCCEED();
}
TYPED_TEST(StringBlockTest, AddedStringIsNullTerminatedIfRequired) {
if (TypeParam::nullTerminatesStrings()) {
constexpr auto capacity = 200;
{
// create 'dummy' block filled with non-null chars
// hopefully the real 'block' below will reuse its memory
// allowing us to detect null-termination
TypeParam dummy{ capacity };
(void)dummy.addString(std::basic_string<typename TypeParam::StringType::value_type>(199, 'a'));
}
TypeParam block{ capacity };
const auto toAdd = randomStringOfLength<typename TypeParam::StringType::value_type>(40);
const auto added = block.addString(toAdd);
ASSERT_EQ(static_cast<std::uint32_t>(added.data()[added.length()]), 0u);
}
}
TYPED_TEST_SUITE(StringBlockOfZeroCapacity, TypesToTest, );
TYPED_TEST(StringBlockOfZeroCapacity, HasNoFreeSpace) {
ASSERT_EQ(this->block.getFreeSpace(), 0u);
}
TYPED_TEST(StringBlockOfZeroCapacity, CannotTakeStringOfNonzeroLength) {
ASSERT_FALSE(this->block.canTakeStringOfLength(100));
}
TYPED_TEST(StringBlockOfZeroCapacity, CannotTakeStringOfMaxLength) {
ASSERT_FALSE(this->block.canTakeStringOfLength(std::numeric_limits<std::size_t>::max()));
}
TYPED_TEST(StringBlockOfZeroCapacity, CanTakeStringOfZeroLengthIfNotNullterminating) {
ASSERT_EQ(this->block.canTakeStringOfLength(0), TypeParam::getSpaceRequiredToStoreStringOfLength(0) == 0);
}
TYPED_TEST(StringBlockOfZeroCapacity, AddedEmptyStringHasZeroLength) {
if (this->block.canTakeStringOfLength(0)) {
ASSERT_EQ(this->block.addString({}).length(), 0u);
}
}
TYPED_TEST_SUITE(StringBlockOfCapacityOfOne, TypesToTest, );
TYPED_TEST(StringBlockOfCapacityOfOne, HasFreeSpaceForOneChar) {
ASSERT_EQ(this->block.getFreeSpace(), 1u);
}
TYPED_TEST(StringBlockOfCapacityOfOne, CanTakeEmptyString) {
ASSERT_TRUE(this->block.canTakeStringOfLength(0));
}
TYPED_TEST(StringBlockOfCapacityOfOne, CanTakeStringOfLengthOfOneIfNotNullterminating) {
ASSERT_EQ(this->block.canTakeStringOfLength(1), TypeParam::getSpaceRequiredToStoreStringOfLength(1) == 1);
}
TYPED_TEST(StringBlockOfCapacityOfOne, CannotTakeStringLongerThanOneChar) {
ASSERT_FALSE(this->block.canTakeStringOfLength(123));
}
TYPED_TEST(StringBlockOfCapacityOfOne, CannotTakeStringOfMaxLength) {
ASSERT_FALSE(this->block.canTakeStringOfLength(std::numeric_limits<std::size_t>::max()));
}
TYPED_TEST(StringBlockOfCapacityOfOne, AddedEmptyStringHasZeroLength) {
ASSERT_EQ(this->block.addString({}).length(), 0u);
}
TYPED_TEST(StringBlockOfCapacityOfOne, AddedStringPreservesLength) {
if (this->block.canTakeStringOfLength(1)) {
ASSERT_EQ(this->block.addString(randomStringOfLength<typename TypeParam::StringType::value_type>(1)).length(), 1u);
}
}
TYPED_TEST(StringBlockOfCapacityOfOne, AddedStringPreservesData) {
if (this->block.canTakeStringOfLength(1)) {
const auto toAdd = randomStringOfLength<typename TypeParam::StringType::value_type>(1);
ASSERT_EQ(this->block.addString(toAdd), toAdd);
}
}
TYPED_TEST(StringBlockOfCapacityOfOne, AddedStringHasDifferentMemoryLocation) {
if (this->block.canTakeStringOfLength(1)) {
const auto toAdd = randomStringOfLength<typename TypeParam::StringType::value_type>(1);
ASSERT_NE(this->block.addString(toAdd).data(), toAdd.data());
}
}
TYPED_TEST_SUITE(StringBlockOfNonzeroCapacity, TypesToTest, );
TYPED_TEST(StringBlockOfNonzeroCapacity, FreeSpaceEqualsCapacityWhenEmpty) {
ASSERT_EQ(this->block.getFreeSpace(), this->capacity);
}
TYPED_TEST(StringBlockOfNonzeroCapacity, CanTakeEmptyString) {
ASSERT_TRUE(this->block.canTakeStringOfLength(0));
}
TYPED_TEST(StringBlockOfNonzeroCapacity, CanTakeStringOfLengthEqualingCapacityIfNotNullterminating) {
ASSERT_EQ(this->block.canTakeStringOfLength(this->capacity), TypeParam::getSpaceRequiredToStoreStringOfLength(this->capacity) == this->capacity);
}
TYPED_TEST(StringBlockOfNonzeroCapacity, CanTakeStringOfShorterThanCapacity) {
ASSERT_TRUE(this->block.canTakeStringOfLength(this->capacity - 1));
}
TYPED_TEST(StringBlockOfNonzeroCapacity, CannotTakeStringLongerThanCapacity) {
ASSERT_FALSE(this->block.canTakeStringOfLength(this->capacity + 1));
}
TYPED_TEST(StringBlockOfNonzeroCapacity, CannotTakeStringOfMaxLength) {
ASSERT_FALSE(this->block.canTakeStringOfLength(std::numeric_limits<std::size_t>::max()));
}
TYPED_TEST(StringBlockOfNonzeroCapacity, AddedEmptyStringHasZeroLength) {
ASSERT_EQ(this->block.addString({}).length(), 0u);
}
TYPED_TEST(StringBlockOfNonzeroCapacity, AddedStringPreservesLength) {
ASSERT_EQ(this->block.addString(randomStringOfLength<typename TypeParam::StringType::value_type>(this->capacity - 1)).length(), this->capacity - 1);
}
TYPED_TEST(StringBlockOfNonzeroCapacity, AddedStringPreservesData) {
const auto toAdd = randomStringOfLength<typename TypeParam::StringType::value_type>(this->capacity - 1);
ASSERT_EQ(this->block.addString(toAdd), toAdd);
}
TYPED_TEST(StringBlockOfNonzeroCapacity, AddedStringHasDifferentMemoryLocation) {
const auto toAdd = randomStringOfLength<typename TypeParam::StringType::value_type>(this->capacity - 1);
ASSERT_NE(this->block.addString(toAdd).data(), toAdd.data());
}
TYPED_TEST(StringBlockOfNonzeroCapacity, AddingStringDoesntAffectPreviouslyAddedString) {
if (this->block.getFreeSpace() >= TypeParam::getSpaceRequiredToStoreStringOfLength(0) + TypeParam::getSpaceRequiredToStoreStringOfLength(1)) {
const auto first = randomStringOfLength<typename TypeParam::StringType::value_type>(this->capacity / 3 + 1);
const auto second = randomStringOfLength<typename TypeParam::StringType::value_type>(this->capacity / 3 + 1);
const auto firstAdded = this->block.addString(first);
(void)this->block.addString(second);
ASSERT_EQ(firstAdded, first);
}
}
static_assert(StringBlock<char, true>::nullTerminatesStrings());
static_assert(!StringBlock<char, false>::nullTerminatesStrings());
static_assert(StringBlock<wchar_t, true>::nullTerminatesStrings());
static_assert(!StringBlock<wchar_t, false>::nullTerminatesStrings());
#ifdef __cpp_lib_char8_t
static_assert(StringBlock<char8_t, true>::nullTerminatesStrings());
static_assert(!StringBlock<char8_t, false>::nullTerminatesStrings());
#endif
static_assert(StringBlock<char16_t, true>::nullTerminatesStrings());
static_assert(!StringBlock<char16_t, false>::nullTerminatesStrings());
static_assert(StringBlock<char32_t, true>::nullTerminatesStrings());
static_assert(!StringBlock<char32_t, false>::nullTerminatesStrings());
int main(int argc, char* argv[])
{
testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
You can’t perform that action at this time.