1 //===- llvm/unittest/ADT/SmallStringTest.cpp ------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // SmallString unit tests. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #include "llvm/ADT/SmallString.h" 14 #include "gtest/gtest.h" 15 #include <climits> 16 #include <cstring> 17 #include <stdarg.h> 18 19 using namespace llvm; 20 21 namespace { 22 23 // Test fixture class 24 class SmallStringTest : public testing::Test { 25 protected: 26 typedef SmallString<40> StringType; 27 28 StringType theString; 29 30 void assertEmpty(StringType & v) { 31 // Size tests 32 EXPECT_EQ(0u, v.size()); 33 EXPECT_TRUE(v.empty()); 34 // Iterator tests 35 EXPECT_TRUE(v.begin() == v.end()); 36 } 37 }; 38 39 // New string test. 40 TEST_F(SmallStringTest, EmptyStringTest) { 41 SCOPED_TRACE("EmptyStringTest"); 42 assertEmpty(theString); 43 EXPECT_TRUE(theString.rbegin() == theString.rend()); 44 } 45 46 TEST_F(SmallStringTest, AssignRepeated) { 47 theString.assign(3, 'a'); 48 EXPECT_EQ(3u, theString.size()); 49 EXPECT_STREQ("aaa", theString.c_str()); 50 } 51 52 TEST_F(SmallStringTest, AssignIterPair) { 53 StringRef abc = "abc"; 54 theString.assign(abc.begin(), abc.end()); 55 EXPECT_EQ(3u, theString.size()); 56 EXPECT_STREQ("abc", theString.c_str()); 57 } 58 59 TEST_F(SmallStringTest, AssignStringRef) { 60 StringRef abc = "abc"; 61 theString.assign(abc); 62 EXPECT_EQ(3u, theString.size()); 63 EXPECT_STREQ("abc", theString.c_str()); 64 } 65 66 TEST_F(SmallStringTest, AssignSmallVector) { 67 StringRef abc = "abc"; 68 SmallVector<char, 10> abcVec(abc.begin(), abc.end()); 69 theString.assign(abcVec); 70 EXPECT_EQ(3u, theString.size()); 71 EXPECT_STREQ("abc", theString.c_str()); 72 } 73 74 TEST_F(SmallStringTest, AppendIterPair) { 75 StringRef abc = "abc"; 76 theString.append(abc.begin(), abc.end()); 77 theString.append(abc.begin(), abc.end()); 78 EXPECT_EQ(6u, theString.size()); 79 EXPECT_STREQ("abcabc", theString.c_str()); 80 } 81 82 TEST_F(SmallStringTest, AppendStringRef) { 83 StringRef abc = "abc"; 84 theString.append(abc); 85 theString.append(abc); 86 EXPECT_EQ(6u, theString.size()); 87 EXPECT_STREQ("abcabc", theString.c_str()); 88 } 89 90 TEST_F(SmallStringTest, AppendSmallVector) { 91 StringRef abc = "abc"; 92 SmallVector<char, 10> abcVec(abc.begin(), abc.end()); 93 theString.append(abcVec); 94 theString.append(abcVec); 95 EXPECT_EQ(6u, theString.size()); 96 EXPECT_STREQ("abcabc", theString.c_str()); 97 } 98 99 TEST_F(SmallStringTest, StringRefConversion) { 100 StringRef abc = "abc"; 101 theString.assign(abc.begin(), abc.end()); 102 StringRef theStringRef = theString; 103 EXPECT_EQ("abc", theStringRef); 104 } 105 106 TEST_F(SmallStringTest, StdStringConversion) { 107 StringRef abc = "abc"; 108 theString.assign(abc.begin(), abc.end()); 109 std::string theStdString = std::string(theString); 110 EXPECT_EQ("abc", theStdString); 111 } 112 113 TEST_F(SmallStringTest, Substr) { 114 theString = "hello"; 115 EXPECT_EQ("lo", theString.substr(3)); 116 EXPECT_EQ("", theString.substr(100)); 117 EXPECT_EQ("hello", theString.substr(0, 100)); 118 EXPECT_EQ("o", theString.substr(4, 10)); 119 } 120 121 TEST_F(SmallStringTest, Slice) { 122 theString = "hello"; 123 EXPECT_EQ("l", theString.slice(2, 3)); 124 EXPECT_EQ("ell", theString.slice(1, 4)); 125 EXPECT_EQ("llo", theString.slice(2, 100)); 126 EXPECT_EQ("", theString.slice(2, 1)); 127 EXPECT_EQ("", theString.slice(10, 20)); 128 } 129 130 TEST_F(SmallStringTest, Find) { 131 theString = "hello"; 132 EXPECT_EQ(2U, theString.find('l')); 133 EXPECT_EQ(StringRef::npos, theString.find('z')); 134 EXPECT_EQ(StringRef::npos, theString.find("helloworld")); 135 EXPECT_EQ(0U, theString.find("hello")); 136 EXPECT_EQ(1U, theString.find("ello")); 137 EXPECT_EQ(StringRef::npos, theString.find("zz")); 138 EXPECT_EQ(2U, theString.find("ll", 2)); 139 EXPECT_EQ(StringRef::npos, theString.find("ll", 3)); 140 EXPECT_EQ(0U, theString.find("")); 141 142 EXPECT_EQ(3U, theString.rfind('l')); 143 EXPECT_EQ(StringRef::npos, theString.rfind('z')); 144 EXPECT_EQ(StringRef::npos, theString.rfind("helloworld")); 145 EXPECT_EQ(0U, theString.rfind("hello")); 146 EXPECT_EQ(1U, theString.rfind("ello")); 147 EXPECT_EQ(StringRef::npos, theString.rfind("zz")); 148 149 EXPECT_EQ(2U, theString.find_first_of('l')); 150 EXPECT_EQ(1U, theString.find_first_of("el")); 151 EXPECT_EQ(StringRef::npos, theString.find_first_of("xyz")); 152 153 EXPECT_EQ(1U, theString.find_first_not_of('h')); 154 EXPECT_EQ(4U, theString.find_first_not_of("hel")); 155 EXPECT_EQ(StringRef::npos, theString.find_first_not_of("hello")); 156 157 theString = "hellx xello hell ello world foo bar hello"; 158 EXPECT_EQ(36U, theString.find("hello")); 159 EXPECT_EQ(28U, theString.find("foo")); 160 EXPECT_EQ(12U, theString.find("hell", 2)); 161 EXPECT_EQ(0U, theString.find("")); 162 } 163 164 TEST_F(SmallStringTest, Count) { 165 theString = "hello"; 166 EXPECT_EQ(2U, theString.count('l')); 167 EXPECT_EQ(1U, theString.count('o')); 168 EXPECT_EQ(0U, theString.count('z')); 169 EXPECT_EQ(0U, theString.count("helloworld")); 170 EXPECT_EQ(1U, theString.count("hello")); 171 EXPECT_EQ(1U, theString.count("ello")); 172 EXPECT_EQ(0U, theString.count("zz")); 173 } 174 175 TEST_F(SmallStringTest, Realloc) { 176 theString = "abcd"; 177 theString.reserve(100); 178 EXPECT_EQ("abcd", theString); 179 unsigned const N = 100000; 180 theString.reserve(N); 181 for (unsigned i = 0; i < N - 4; ++i) 182 theString.push_back('y'); 183 EXPECT_EQ("abcdyyy", theString.slice(0, 7)); 184 } 185 186 TEST_F(SmallStringTest, Comparisons) { 187 EXPECT_EQ(-1, SmallString<10>("aab").compare("aad")); 188 EXPECT_EQ( 0, SmallString<10>("aab").compare("aab")); 189 EXPECT_EQ( 1, SmallString<10>("aab").compare("aaa")); 190 EXPECT_EQ(-1, SmallString<10>("aab").compare("aabb")); 191 EXPECT_EQ( 1, SmallString<10>("aab").compare("aa")); 192 EXPECT_EQ( 1, SmallString<10>("\xFF").compare("\1")); 193 194 EXPECT_EQ(-1, SmallString<10>("AaB").compare_lower("aAd")); 195 EXPECT_EQ( 0, SmallString<10>("AaB").compare_lower("aab")); 196 EXPECT_EQ( 1, SmallString<10>("AaB").compare_lower("AAA")); 197 EXPECT_EQ(-1, SmallString<10>("AaB").compare_lower("aaBb")); 198 EXPECT_EQ( 1, SmallString<10>("AaB").compare_lower("aA")); 199 EXPECT_EQ( 1, SmallString<10>("\xFF").compare_lower("\1")); 200 201 EXPECT_EQ(-1, SmallString<10>("aab").compare_numeric("aad")); 202 EXPECT_EQ( 0, SmallString<10>("aab").compare_numeric("aab")); 203 EXPECT_EQ( 1, SmallString<10>("aab").compare_numeric("aaa")); 204 EXPECT_EQ(-1, SmallString<10>("aab").compare_numeric("aabb")); 205 EXPECT_EQ( 1, SmallString<10>("aab").compare_numeric("aa")); 206 EXPECT_EQ(-1, SmallString<10>("1").compare_numeric("10")); 207 EXPECT_EQ( 0, SmallString<10>("10").compare_numeric("10")); 208 EXPECT_EQ( 0, SmallString<10>("10a").compare_numeric("10a")); 209 EXPECT_EQ( 1, SmallString<10>("2").compare_numeric("1")); 210 EXPECT_EQ( 0, SmallString<10>("llvm_v1i64_ty").compare_numeric("llvm_v1i64_ty")); 211 EXPECT_EQ( 1, SmallString<10>("\xFF").compare_numeric("\1")); 212 EXPECT_EQ( 1, SmallString<10>("V16").compare_numeric("V1_q0")); 213 EXPECT_EQ(-1, SmallString<10>("V1_q0").compare_numeric("V16")); 214 EXPECT_EQ(-1, SmallString<10>("V8_q0").compare_numeric("V16")); 215 EXPECT_EQ( 1, SmallString<10>("V16").compare_numeric("V8_q0")); 216 EXPECT_EQ(-1, SmallString<10>("V1_q0").compare_numeric("V8_q0")); 217 EXPECT_EQ( 1, SmallString<10>("V8_q0").compare_numeric("V1_q0")); 218 } 219 220 // Check gtest prints SmallString as a string instead of a container of chars. 221 // The code is in utils/unittest/googletest/internal/custom/gtest-printers.h 222 TEST_F(SmallStringTest, GTestPrinter) { 223 EXPECT_EQ(R"("foo")", ::testing::PrintToString(SmallString<1>("foo"))); 224 const SmallVectorImpl<char> &ErasedSmallString = SmallString<1>("foo"); 225 EXPECT_EQ(R"("foo")", ::testing::PrintToString(ErasedSmallString)); 226 } 227 228 } // namespace 229