unittests/ADT/StringRefTest.cpp

   1 //===- llvm/unittest/ADT/StringRefTest.cpp - StringRef unit tests ---------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "llvm/ADT/StringRef.h"
  11 #include "llvm/ADT/Hashing.h"
  12 #include "llvm/ADT/STLExtras.h"
  13 #include "llvm/ADT/SmallVector.h"
  14 #include "llvm/ADT/StringExtras.h"
  15 #include "llvm/Support/Allocator.h"
  16 #include "llvm/Support/raw_ostream.h"
  17 #include "gtest/gtest.h"
  18 using namespace llvm;
  19
  20 namespace llvm {
  21
  22 std::ostream &operator<<(std::ostream &OS, const StringRef &S) {
  23   OS << S.str();
  24   return OS;
  25 }
  26
  27 std::ostream &operator<<(std::ostream &OS,
  28                          const std::pair<StringRef, StringRef> &P) {
  29   OS << "(" << P.first << ", " << P.second << ")";
  30   return OS;
  31 }
  32
  33 }
  34
  35 namespace {
  36 TEST(StringRefTest, Construction) {
  37   EXPECT_EQ("", StringRef());
  38   EXPECT_EQ("hello", StringRef("hello"));
  39   EXPECT_EQ("hello", StringRef("hello world", 5));
  40   EXPECT_EQ("hello", StringRef(std::string("hello")));
  41 }
  42
  43 TEST(StringRefTest, Iteration) {
  44   StringRef S("hello");
  45   const char *p = "hello";
  46   for (const char *it = S.begin(), *ie = S.end(); it != ie; ++it, ++p)
  47     EXPECT_EQ(*it, *p);
  48 }
  49
  50 TEST(StringRefTest, StringOps) {
  51   const char *p = "hello";
  52   EXPECT_EQ(p, StringRef(p, 0).data());
  53   EXPECT_TRUE(StringRef().empty());
  54   EXPECT_EQ((size_t) 5, StringRef("hello").size());
  55   EXPECT_EQ(-1, StringRef("aab").compare("aad"));
  56   EXPECT_EQ( 0, StringRef("aab").compare("aab"));
  57   EXPECT_EQ( 1, StringRef("aab").compare("aaa"));
  58   EXPECT_EQ(-1, StringRef("aab").compare("aabb"));
  59   EXPECT_EQ( 1, StringRef("aab").compare("aa"));
  60   EXPECT_EQ( 1, StringRef("\xFF").compare("\1"));
  61
  62   EXPECT_EQ(-1, StringRef("AaB").compare_lower("aAd"));
  63   EXPECT_EQ( 0, StringRef("AaB").compare_lower("aab"));
  64   EXPECT_EQ( 1, StringRef("AaB").compare_lower("AAA"));
  65   EXPECT_EQ(-1, StringRef("AaB").compare_lower("aaBb"));
  66   EXPECT_EQ(-1, StringRef("AaB").compare_lower("bb"));
  67   EXPECT_EQ( 1, StringRef("aaBb").compare_lower("AaB"));
  68   EXPECT_EQ( 1, StringRef("bb").compare_lower("AaB"));
  69   EXPECT_EQ( 1, StringRef("AaB").compare_lower("aA"));
  70   EXPECT_EQ( 1, StringRef("\xFF").compare_lower("\1"));
  71
  72   EXPECT_EQ(-1, StringRef("aab").compare_numeric("aad"));
  73   EXPECT_EQ( 0, StringRef("aab").compare_numeric("aab"));
  74   EXPECT_EQ( 1, StringRef("aab").compare_numeric("aaa"));
  75   EXPECT_EQ(-1, StringRef("aab").compare_numeric("aabb"));
  76   EXPECT_EQ( 1, StringRef("aab").compare_numeric("aa"));
  77   EXPECT_EQ(-1, StringRef("1").compare_numeric("10"));
  78   EXPECT_EQ( 0, StringRef("10").compare_numeric("10"));
  79   EXPECT_EQ( 0, StringRef("10a").compare_numeric("10a"));
  80   EXPECT_EQ( 1, StringRef("2").compare_numeric("1"));
  81   EXPECT_EQ( 0, StringRef("llvm_v1i64_ty").compare_numeric("llvm_v1i64_ty"));
  82   EXPECT_EQ( 1, StringRef("\xFF").compare_numeric("\1"));
  83   EXPECT_EQ( 1, StringRef("V16").compare_numeric("V1_q0"));
  84   EXPECT_EQ(-1, StringRef("V1_q0").compare_numeric("V16"));
  85   EXPECT_EQ(-1, StringRef("V8_q0").compare_numeric("V16"));
  86   EXPECT_EQ( 1, StringRef("V16").compare_numeric("V8_q0"));
  87   EXPECT_EQ(-1, StringRef("V1_q0").compare_numeric("V8_q0"));
  88   EXPECT_EQ( 1, StringRef("V8_q0").compare_numeric("V1_q0"));
  89 }
  90
  91 TEST(StringRefTest, Operators) {
  92   EXPECT_EQ("", StringRef());
  93   EXPECT_TRUE(StringRef("aab") < StringRef("aad"));
  94   EXPECT_FALSE(StringRef("aab") < StringRef("aab"));
  95   EXPECT_TRUE(StringRef("aab") <= StringRef("aab"));
  96   EXPECT_FALSE(StringRef("aab") <= StringRef("aaa"));
  97   EXPECT_TRUE(StringRef("aad") > StringRef("aab"));
  98   EXPECT_FALSE(StringRef("aab") > StringRef("aab"));
  99   EXPECT_TRUE(StringRef("aab") >= StringRef("aab"));
 100   EXPECT_FALSE(StringRef("aaa") >= StringRef("aab"));
 101   EXPECT_EQ(StringRef("aab"), StringRef("aab"));
 102   EXPECT_FALSE(StringRef("aab") == StringRef("aac"));
 103   EXPECT_FALSE(StringRef("aab") != StringRef("aab"));
 104   EXPECT_TRUE(StringRef("aab") != StringRef("aac"));
 105   EXPECT_EQ('a', StringRef("aab")[1]);
 106 }
 107
 108 TEST(StringRefTest, Substr) {
 109   StringRef Str("hello");
 110   EXPECT_EQ("lo", Str.substr(3));
 111   EXPECT_EQ("", Str.substr(100));
 112   EXPECT_EQ("hello", Str.substr(0, 100));
 113   EXPECT_EQ("o", Str.substr(4, 10));
 114 }
 115
 116 TEST(StringRefTest, Slice) {
 117   StringRef Str("hello");
 118   EXPECT_EQ("l", Str.slice(2, 3));
 119   EXPECT_EQ("ell", Str.slice(1, 4));
 120   EXPECT_EQ("llo", Str.slice(2, 100));
 121   EXPECT_EQ("", Str.slice(2, 1));
 122   EXPECT_EQ("", Str.slice(10, 20));
 123 }
 124
 125 TEST(StringRefTest, Split) {
 126   StringRef Str("hello");
 127   EXPECT_EQ(std::make_pair(StringRef("hello"), StringRef("")),
 128             Str.split('X'));
 129   EXPECT_EQ(std::make_pair(StringRef("h"), StringRef("llo")),
 130             Str.split('e'));
 131   EXPECT_EQ(std::make_pair(StringRef(""), StringRef("ello")),
 132             Str.split('h'));
 133   EXPECT_EQ(std::make_pair(StringRef("he"), StringRef("lo")),
 134             Str.split('l'));
 135   EXPECT_EQ(std::make_pair(StringRef("hell"), StringRef("")),
 136             Str.split('o'));
 137
 138   EXPECT_EQ(std::make_pair(StringRef("hello"), StringRef("")),
 139             Str.rsplit('X'));
 140   EXPECT_EQ(std::make_pair(StringRef("h"), StringRef("llo")),
 141             Str.rsplit('e'));
 142   EXPECT_EQ(std::make_pair(StringRef(""), StringRef("ello")),
 143             Str.rsplit('h'));
 144   EXPECT_EQ(std::make_pair(StringRef("hel"), StringRef("o")),
 145             Str.rsplit('l'));
 146   EXPECT_EQ(std::make_pair(StringRef("hell"), StringRef("")),
 147             Str.rsplit('o'));
 148 }
 149
 150 TEST(StringRefTest, Split2) {
 151   SmallVector<StringRef, 5> parts;
 152   SmallVector<StringRef, 5> expected;
 153
 154   expected.push_back("ab"); expected.push_back("c");
 155   StringRef(",ab,,c,").split(parts, ",", -1, false);
 156   EXPECT_TRUE(parts == expected);
 157
 158   expected.clear(); parts.clear();
 159   expected.push_back(""); expected.push_back("ab"); expected.push_back("");
 160   expected.push_back("c"); expected.push_back("");
 161   StringRef(",ab,,c,").split(parts, ",", -1, true);
 162   EXPECT_TRUE(parts == expected);
 163
 164   expected.clear(); parts.clear();
 165   expected.push_back("");
 166   StringRef("").split(parts, ",", -1, true);
 167   EXPECT_TRUE(parts == expected);
 168
 169   expected.clear(); parts.clear();
 170   StringRef("").split(parts, ",", -1, false);
 171   EXPECT_TRUE(parts == expected);
 172
 173   expected.clear(); parts.clear();
 174   StringRef(",").split(parts, ",", -1, false);
 175   EXPECT_TRUE(parts == expected);
 176
 177   expected.clear(); parts.clear();
 178   expected.push_back(""); expected.push_back("");
 179   StringRef(",").split(parts, ",", -1, true);
 180   EXPECT_TRUE(parts == expected);
 181
 182   expected.clear(); parts.clear();
 183   expected.push_back("a"); expected.push_back("b");
 184   StringRef("a,b").split(parts, ",", -1, true);
 185   EXPECT_TRUE(parts == expected);
 186
 187   // Test MaxSplit
 188   expected.clear(); parts.clear();
 189   expected.push_back("a,,b,c");
 190   StringRef("a,,b,c").split(parts, ",", 0, true);
 191   EXPECT_TRUE(parts == expected);
 192
 193   expected.clear(); parts.clear();
 194   expected.push_back("a,,b,c");
 195   StringRef("a,,b,c").split(parts, ",", 0, false);
 196   EXPECT_TRUE(parts == expected);
 197
 198   expected.clear(); parts.clear();
 199   expected.push_back("a"); expected.push_back(",b,c");
 200   StringRef("a,,b,c").split(parts, ",", 1, true);
 201   EXPECT_TRUE(parts == expected);
 202
 203   expected.clear(); parts.clear();
 204   expected.push_back("a"); expected.push_back(",b,c");
 205   StringRef("a,,b,c").split(parts, ",", 1, false);
 206   EXPECT_TRUE(parts == expected);
 207
 208   expected.clear(); parts.clear();
 209   expected.push_back("a"); expected.push_back(""); expected.push_back("b,c");
 210   StringRef("a,,b,c").split(parts, ",", 2, true);
 211   EXPECT_TRUE(parts == expected);
 212
 213   expected.clear(); parts.clear();
 214   expected.push_back("a"); expected.push_back("b,c");
 215   StringRef("a,,b,c").split(parts, ",", 2, false);
 216   EXPECT_TRUE(parts == expected);
 217
 218   expected.clear(); parts.clear();
 219   expected.push_back("a"); expected.push_back(""); expected.push_back("b");
 220   expected.push_back("c");
 221   StringRef("a,,b,c").split(parts, ",", 3, true);
 222   EXPECT_TRUE(parts == expected);
 223
 224   expected.clear(); parts.clear();
 225   expected.push_back("a"); expected.push_back("b"); expected.push_back("c");
 226   StringRef("a,,b,c").split(parts, ",", 3, false);
 227   EXPECT_TRUE(parts == expected);
 228
 229   expected.clear(); parts.clear();
 230   expected.push_back("a"); expected.push_back("b"); expected.push_back("c");
 231   StringRef("a,,b,c").split(parts, ',', 3, false);
 232   EXPECT_TRUE(parts == expected);
 233 }
 234
 235 TEST(StringRefTest, Trim) {
 236   StringRef Str0("hello");
 237   StringRef Str1(" hello ");
 238   StringRef Str2("  hello  ");
 239
 240   EXPECT_EQ(StringRef("hello"), Str0.rtrim());
 241   EXPECT_EQ(StringRef(" hello"), Str1.rtrim());
 242   EXPECT_EQ(StringRef("  hello"), Str2.rtrim());
 243   EXPECT_EQ(StringRef("hello"), Str0.ltrim());
 244   EXPECT_EQ(StringRef("hello "), Str1.ltrim());
 245   EXPECT_EQ(StringRef("hello  "), Str2.ltrim());
 246   EXPECT_EQ(StringRef("hello"), Str0.trim());
 247   EXPECT_EQ(StringRef("hello"), Str1.trim());
 248   EXPECT_EQ(StringRef("hello"), Str2.trim());
 249
 250   EXPECT_EQ(StringRef("ello"), Str0.trim("hhhhhhhhhhh"));
 251
 252   EXPECT_EQ(StringRef(""), StringRef("").trim());
 253   EXPECT_EQ(StringRef(""), StringRef(" ").trim());
 254   EXPECT_EQ(StringRef("\0", 1), StringRef(" \0 ", 3).trim());
 255   EXPECT_EQ(StringRef("\0\0", 2), StringRef("\0\0", 2).trim());
 256   EXPECT_EQ(StringRef("x"), StringRef("\0\0x\0\0", 5).trim(StringRef("\0", 1)));
 257 }
 258
 259 TEST(StringRefTest, StartsWith) {
 260   StringRef Str("hello");
 261   EXPECT_TRUE(Str.startswith(""));
 262   EXPECT_TRUE(Str.startswith("he"));
 263   EXPECT_FALSE(Str.startswith("helloworld"));
 264   EXPECT_FALSE(Str.startswith("hi"));
 265 }
 266
 267 TEST(StringRefTest, StartsWithLower) {
 268   StringRef Str("heLLo");
 269   EXPECT_TRUE(Str.startswith_lower(""));
 270   EXPECT_TRUE(Str.startswith_lower("he"));
 271   EXPECT_TRUE(Str.startswith_lower("hell"));
 272   EXPECT_TRUE(Str.startswith_lower("HELlo"));
 273   EXPECT_FALSE(Str.startswith_lower("helloworld"));
 274   EXPECT_FALSE(Str.startswith_lower("hi"));
 275 }
 276
 277 TEST(StringRefTest, EndsWith) {
 278   StringRef Str("hello");
 279   EXPECT_TRUE(Str.endswith(""));
 280   EXPECT_TRUE(Str.endswith("lo"));
 281   EXPECT_FALSE(Str.endswith("helloworld"));
 282   EXPECT_FALSE(Str.endswith("worldhello"));
 283   EXPECT_FALSE(Str.endswith("so"));
 284 }
 285
 286 TEST(StringRefTest, EndsWithLower) {
 287   StringRef Str("heLLo");
 288   EXPECT_TRUE(Str.endswith_lower(""));
 289   EXPECT_TRUE(Str.endswith_lower("lo"));
 290   EXPECT_TRUE(Str.endswith_lower("LO"));
 291   EXPECT_TRUE(Str.endswith_lower("ELlo"));
 292   EXPECT_FALSE(Str.endswith_lower("helloworld"));
 293   EXPECT_FALSE(Str.endswith_lower("hi"));
 294 }
 295
 296 TEST(StringRefTest, Find) {
 297   StringRef Str("hello");
 298   EXPECT_EQ(2U, Str.find('l'));
 299   EXPECT_EQ(StringRef::npos, Str.find('z'));
 300   EXPECT_EQ(StringRef::npos, Str.find("helloworld"));
 301   EXPECT_EQ(0U, Str.find("hello"));
 302   EXPECT_EQ(1U, Str.find("ello"));
 303   EXPECT_EQ(StringRef::npos, Str.find("zz"));
 304   EXPECT_EQ(2U, Str.find("ll", 2));
 305   EXPECT_EQ(StringRef::npos, Str.find("ll", 3));
 306   EXPECT_EQ(0U, Str.find(""));
 307   StringRef LongStr("hellx xello hell ello world foo bar hello");
 308   EXPECT_EQ(36U, LongStr.find("hello"));
 309   EXPECT_EQ(28U, LongStr.find("foo"));
 310   EXPECT_EQ(12U, LongStr.find("hell", 2));
 311   EXPECT_EQ(0U, LongStr.find(""));
 312
 313   EXPECT_EQ(3U, Str.rfind('l'));
 314   EXPECT_EQ(StringRef::npos, Str.rfind('z'));
 315   EXPECT_EQ(StringRef::npos, Str.rfind("helloworld"));
 316   EXPECT_EQ(0U, Str.rfind("hello"));
 317   EXPECT_EQ(1U, Str.rfind("ello"));
 318   EXPECT_EQ(StringRef::npos, Str.rfind("zz"));
 319
 320   EXPECT_EQ(2U, Str.find_first_of('l'));
 321   EXPECT_EQ(1U, Str.find_first_of("el"));
 322   EXPECT_EQ(StringRef::npos, Str.find_first_of("xyz"));
 323
 324   EXPECT_EQ(1U, Str.find_first_not_of('h'));
 325   EXPECT_EQ(4U, Str.find_first_not_of("hel"));
 326   EXPECT_EQ(StringRef::npos, Str.find_first_not_of("hello"));
 327
 328   EXPECT_EQ(3U, Str.find_last_not_of('o'));
 329   EXPECT_EQ(1U, Str.find_last_not_of("lo"));
 330   EXPECT_EQ(StringRef::npos, Str.find_last_not_of("helo"));
 331 }
 332
 333 TEST(StringRefTest, Count) {
 334   StringRef Str("hello");
 335   EXPECT_EQ(2U, Str.count('l'));
 336   EXPECT_EQ(1U, Str.count('o'));
 337   EXPECT_EQ(0U, Str.count('z'));
 338   EXPECT_EQ(0U, Str.count("helloworld"));
 339   EXPECT_EQ(1U, Str.count("hello"));
 340   EXPECT_EQ(1U, Str.count("ello"));
 341   EXPECT_EQ(0U, Str.count("zz"));
 342 }
 343
 344 TEST(StringRefTest, EditDistance) {
 345   StringRef Str("hello");
 346   EXPECT_EQ(2U, Str.edit_distance("hill"));
 347 }
 348
 349 TEST(StringRefTest, Misc) {
 350   std::string Storage;
 351   raw_string_ostream OS(Storage);
 352   OS << StringRef("hello");
 353   EXPECT_EQ("hello", OS.str());
 354 }
 355
 356 TEST(StringRefTest, Hashing) {
 357   EXPECT_EQ(hash_value(std::string()), hash_value(StringRef()));
 358   EXPECT_EQ(hash_value(std::string()), hash_value(StringRef("")));
 359   std::string S = "hello world";
 360   hash_code H = hash_value(S);
 361   EXPECT_EQ(H, hash_value(StringRef("hello world")));
 362   EXPECT_EQ(H, hash_value(StringRef(S)));
 363   EXPECT_NE(H, hash_value(StringRef("hello worl")));
 364   EXPECT_EQ(hash_value(std::string("hello worl")),
 365             hash_value(StringRef("hello worl")));
 366   EXPECT_NE(H, hash_value(StringRef("hello world ")));
 367   EXPECT_EQ(hash_value(std::string("hello world ")),
 368             hash_value(StringRef("hello world ")));
 369   EXPECT_EQ(H, hash_value(StringRef("hello world\0")));
 370   EXPECT_NE(hash_value(std::string("ello worl")),
 371             hash_value(StringRef("hello world").slice(1, -1)));
 372 }
 373
 374 struct UnsignedPair {
 375   const char *Str;
 376   uint64_t Expected;
 377 } Unsigned[] =
 378   { {"0", 0}
 379   , {"255", 255}
 380   , {"256", 256}
 381   , {"65535", 65535}
 382   , {"65536", 65536}
 383   , {"4294967295", 4294967295ULL}
 384   , {"4294967296", 4294967296ULL}
 385   , {"18446744073709551615", 18446744073709551615ULL}
 386   , {"042", 34}
 387   , {"0x42", 66}
 388   , {"0b101010", 42}
 389   };
 390
 391 struct SignedPair {
 392   const char *Str;
 393   int64_t Expected;
 394 } Signed[] =
 395   { {"0", 0}
 396   , {"-0", 0}
 397   , {"127", 127}
 398   , {"128", 128}
 399   , {"-128", -128}
 400   , {"-129", -129}
 401   , {"32767", 32767}
 402   , {"32768", 32768}
 403   , {"-32768", -32768}
 404   , {"-32769", -32769}
 405   , {"2147483647", 2147483647LL}
 406   , {"2147483648", 2147483648LL}
 407   , {"-2147483648", -2147483648LL}
 408   , {"-2147483649", -2147483649LL}
 409   , {"-9223372036854775808", -(9223372036854775807LL) - 1}
 410   , {"042", 34}
 411   , {"0x42", 66}
 412   , {"0b101010", 42}
 413   , {"-042", -34}
 414   , {"-0x42", -66}
 415   , {"-0b101010", -42}
 416   };
 417
 418 TEST(StringRefTest, getAsInteger) {
 419   uint8_t U8;
 420   uint16_t U16;
 421   uint32_t U32;
 422   uint64_t U64;
 423
 424   for (size_t i = 0; i < array_lengthof(Unsigned); ++i) {
 425     bool U8Success = StringRef(Unsigned[i].Str).getAsInteger(0, U8);
 426     if (static_cast<uint8_t>(Unsigned[i].Expected) == Unsigned[i].Expected) {
 427       ASSERT_FALSE(U8Success);
 428       EXPECT_EQ(U8, Unsigned[i].Expected);
 429     } else {
 430       ASSERT_TRUE(U8Success);
 431     }
 432     bool U16Success = StringRef(Unsigned[i].Str).getAsInteger(0, U16);
 433     if (static_cast<uint16_t>(Unsigned[i].Expected) == Unsigned[i].Expected) {
 434       ASSERT_FALSE(U16Success);
 435       EXPECT_EQ(U16, Unsigned[i].Expected);
 436     } else {
 437       ASSERT_TRUE(U16Success);
 438     }
 439     bool U32Success = StringRef(Unsigned[i].Str).getAsInteger(0, U32);
 440     if (static_cast<uint32_t>(Unsigned[i].Expected) == Unsigned[i].Expected) {
 441       ASSERT_FALSE(U32Success);
 442       EXPECT_EQ(U32, Unsigned[i].Expected);
 443     } else {
 444       ASSERT_TRUE(U32Success);
 445     }
 446     bool U64Success = StringRef(Unsigned[i].Str).getAsInteger(0, U64);
 447     if (static_cast<uint64_t>(Unsigned[i].Expected) == Unsigned[i].Expected) {
 448       ASSERT_FALSE(U64Success);
 449       EXPECT_EQ(U64, Unsigned[i].Expected);
 450     } else {
 451       ASSERT_TRUE(U64Success);
 452     }
 453   }
 454
 455   int8_t S8;
 456   int16_t S16;
 457   int32_t S32;
 458   int64_t S64;
 459
 460   for (size_t i = 0; i < array_lengthof(Signed); ++i) {
 461     bool S8Success = StringRef(Signed[i].Str).getAsInteger(0, S8);
 462     if (static_cast<int8_t>(Signed[i].Expected) == Signed[i].Expected) {
 463       ASSERT_FALSE(S8Success);
 464       EXPECT_EQ(S8, Signed[i].Expected);
 465     } else {
 466       ASSERT_TRUE(S8Success);
 467     }
 468     bool S16Success = StringRef(Signed[i].Str).getAsInteger(0, S16);
 469     if (static_cast<int16_t>(Signed[i].Expected) == Signed[i].Expected) {
 470       ASSERT_FALSE(S16Success);
 471       EXPECT_EQ(S16, Signed[i].Expected);
 472     } else {
 473       ASSERT_TRUE(S16Success);
 474     }
 475     bool S32Success = StringRef(Signed[i].Str).getAsInteger(0, S32);
 476     if (static_cast<int32_t>(Signed[i].Expected) == Signed[i].Expected) {
 477       ASSERT_FALSE(S32Success);
 478       EXPECT_EQ(S32, Signed[i].Expected);
 479     } else {
 480       ASSERT_TRUE(S32Success);
 481     }
 482     bool S64Success = StringRef(Signed[i].Str).getAsInteger(0, S64);
 483     if (static_cast<int64_t>(Signed[i].Expected) == Signed[i].Expected) {
 484       ASSERT_FALSE(S64Success);
 485       EXPECT_EQ(S64, Signed[i].Expected);
 486     } else {
 487       ASSERT_TRUE(S64Success);
 488     }
 489   }
 490 }
 491
 492
 493 static const char* BadStrings[] = {
 494     "18446744073709551617"  // value just over max
 495   , "123456789012345678901" // value way too large
 496   , "4t23v"                 // illegal decimal characters
 497   , "0x123W56"              // illegal hex characters
 498   , "0b2"                   // illegal bin characters
 499   , "08"                    // illegal oct characters
 500   , "0o8"                   // illegal oct characters
 501   , "-123"                  // negative unsigned value
 502 };
 503
 504
 505 TEST(StringRefTest, getAsUnsignedIntegerBadStrings) {
 506   unsigned long long U64;
 507   for (size_t i = 0; i < array_lengthof(BadStrings); ++i) {
 508     bool IsBadNumber = StringRef(BadStrings[i]).getAsInteger(0, U64);
 509     ASSERT_TRUE(IsBadNumber);
 510   }
 511 }
 512
 513 static const char *join_input[] = { "a", "b", "c" };
 514 static const char join_result1[] = "a";
 515 static const char join_result2[] = "a:b:c";
 516 static const char join_result3[] = "a::b::c";
 517
 518 TEST(StringRefTest, joinStrings) {
 519   std::vector<StringRef> v1;
 520   std::vector<std::string> v2;
 521   for (size_t i = 0; i < array_lengthof(join_input); ++i) {
 522     v1.push_back(join_input[i]);
 523     v2.push_back(join_input[i]);
 524   }
 525
 526   bool v1_join1 = join(v1.begin(), v1.begin() + 1, ":") == join_result1;
 527   EXPECT_TRUE(v1_join1);
 528   bool v1_join2 = join(v1.begin(), v1.end(), ":") == join_result2;
 529   EXPECT_TRUE(v1_join2);
 530   bool v1_join3 = join(v1.begin(), v1.end(), "::") == join_result3;
 531   EXPECT_TRUE(v1_join3);
 532
 533   bool v2_join1 = join(v2.begin(), v2.begin() + 1, ":") == join_result1;
 534   EXPECT_TRUE(v2_join1);
 535   bool v2_join2 = join(v2.begin(), v2.end(), ":") == join_result2;
 536   EXPECT_TRUE(v2_join2);
 537   bool v2_join3 = join(v2.begin(), v2.end(), "::") == join_result3;
 538   EXPECT_TRUE(v2_join3);
 539 }
 540
 541
 542 TEST(StringRefTest, AllocatorCopy) {
 543   BumpPtrAllocator Alloc;
 544   StringRef Str1 = "hello";
 545   StringRef Str2 = "bye";
 546   StringRef Str1c = Str1.copy(Alloc);
 547   StringRef Str2c = Str2.copy(Alloc);
 548   EXPECT_TRUE(Str1.equals(Str1c));
 549   EXPECT_NE(Str1.data(), Str1c.data());
 550   EXPECT_TRUE(Str2.equals(Str2c));
 551   EXPECT_NE(Str2.data(), Str2c.data());
 552 }
 553
 554
 555 } // end anonymous namespace