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
 230 TEST(StringRefTest, Trim) {
 231   StringRef Str0("hello");
 232   StringRef Str1(" hello ");
 233   StringRef Str2("  hello  ");
 234
 235   EXPECT_EQ(StringRef("hello"), Str0.rtrim());
 236   EXPECT_EQ(StringRef(" hello"), Str1.rtrim());
 237   EXPECT_EQ(StringRef("  hello"), Str2.rtrim());
 238   EXPECT_EQ(StringRef("hello"), Str0.ltrim());
 239   EXPECT_EQ(StringRef("hello "), Str1.ltrim());
 240   EXPECT_EQ(StringRef("hello  "), Str2.ltrim());
 241   EXPECT_EQ(StringRef("hello"), Str0.trim());
 242   EXPECT_EQ(StringRef("hello"), Str1.trim());
 243   EXPECT_EQ(StringRef("hello"), Str2.trim());
 244
 245   EXPECT_EQ(StringRef("ello"), Str0.trim("hhhhhhhhhhh"));
 246
 247   EXPECT_EQ(StringRef(""), StringRef("").trim());
 248   EXPECT_EQ(StringRef(""), StringRef(" ").trim());
 249   EXPECT_EQ(StringRef("\0", 1), StringRef(" \0 ", 3).trim());
 250   EXPECT_EQ(StringRef("\0\0", 2), StringRef("\0\0", 2).trim());
 251   EXPECT_EQ(StringRef("x"), StringRef("\0\0x\0\0", 5).trim(StringRef("\0", 1)));
 252 }
 253
 254 TEST(StringRefTest, StartsWith) {
 255   StringRef Str("hello");
 256   EXPECT_TRUE(Str.startswith(""));
 257   EXPECT_TRUE(Str.startswith("he"));
 258   EXPECT_FALSE(Str.startswith("helloworld"));
 259   EXPECT_FALSE(Str.startswith("hi"));
 260 }
 261
 262 TEST(StringRefTest, StartsWithLower) {
 263   StringRef Str("heLLo");
 264   EXPECT_TRUE(Str.startswith_lower(""));
 265   EXPECT_TRUE(Str.startswith_lower("he"));
 266   EXPECT_TRUE(Str.startswith_lower("hell"));
 267   EXPECT_TRUE(Str.startswith_lower("HELlo"));
 268   EXPECT_FALSE(Str.startswith_lower("helloworld"));
 269   EXPECT_FALSE(Str.startswith_lower("hi"));
 270 }
 271
 272 TEST(StringRefTest, EndsWith) {
 273   StringRef Str("hello");
 274   EXPECT_TRUE(Str.endswith(""));
 275   EXPECT_TRUE(Str.endswith("lo"));
 276   EXPECT_FALSE(Str.endswith("helloworld"));
 277   EXPECT_FALSE(Str.endswith("worldhello"));
 278   EXPECT_FALSE(Str.endswith("so"));
 279 }
 280
 281 TEST(StringRefTest, EndsWithLower) {
 282   StringRef Str("heLLo");
 283   EXPECT_TRUE(Str.endswith_lower(""));
 284   EXPECT_TRUE(Str.endswith_lower("lo"));
 285   EXPECT_TRUE(Str.endswith_lower("LO"));
 286   EXPECT_TRUE(Str.endswith_lower("ELlo"));
 287   EXPECT_FALSE(Str.endswith_lower("helloworld"));
 288   EXPECT_FALSE(Str.endswith_lower("hi"));
 289 }
 290
 291 TEST(StringRefTest, Find) {
 292   StringRef Str("hello");
 293   EXPECT_EQ(2U, Str.find('l'));
 294   EXPECT_EQ(StringRef::npos, Str.find('z'));
 295   EXPECT_EQ(StringRef::npos, Str.find("helloworld"));
 296   EXPECT_EQ(0U, Str.find("hello"));
 297   EXPECT_EQ(1U, Str.find("ello"));
 298   EXPECT_EQ(StringRef::npos, Str.find("zz"));
 299   EXPECT_EQ(2U, Str.find("ll", 2));
 300   EXPECT_EQ(StringRef::npos, Str.find("ll", 3));
 301   EXPECT_EQ(0U, Str.find(""));
 302   StringRef LongStr("hellx xello hell ello world foo bar hello");
 303   EXPECT_EQ(36U, LongStr.find("hello"));
 304   EXPECT_EQ(28U, LongStr.find("foo"));
 305   EXPECT_EQ(12U, LongStr.find("hell", 2));
 306   EXPECT_EQ(0U, LongStr.find(""));
 307
 308   EXPECT_EQ(3U, Str.rfind('l'));
 309   EXPECT_EQ(StringRef::npos, Str.rfind('z'));
 310   EXPECT_EQ(StringRef::npos, Str.rfind("helloworld"));
 311   EXPECT_EQ(0U, Str.rfind("hello"));
 312   EXPECT_EQ(1U, Str.rfind("ello"));
 313   EXPECT_EQ(StringRef::npos, Str.rfind("zz"));
 314
 315   EXPECT_EQ(2U, Str.find_first_of('l'));
 316   EXPECT_EQ(1U, Str.find_first_of("el"));
 317   EXPECT_EQ(StringRef::npos, Str.find_first_of("xyz"));
 318
 319   EXPECT_EQ(1U, Str.find_first_not_of('h'));
 320   EXPECT_EQ(4U, Str.find_first_not_of("hel"));
 321   EXPECT_EQ(StringRef::npos, Str.find_first_not_of("hello"));
 322
 323   EXPECT_EQ(3U, Str.find_last_not_of('o'));
 324   EXPECT_EQ(1U, Str.find_last_not_of("lo"));
 325   EXPECT_EQ(StringRef::npos, Str.find_last_not_of("helo"));
 326 }
 327
 328 TEST(StringRefTest, Count) {
 329   StringRef Str("hello");
 330   EXPECT_EQ(2U, Str.count('l'));
 331   EXPECT_EQ(1U, Str.count('o'));
 332   EXPECT_EQ(0U, Str.count('z'));
 333   EXPECT_EQ(0U, Str.count("helloworld"));
 334   EXPECT_EQ(1U, Str.count("hello"));
 335   EXPECT_EQ(1U, Str.count("ello"));
 336   EXPECT_EQ(0U, Str.count("zz"));
 337 }
 338
 339 TEST(StringRefTest, EditDistance) {
 340   StringRef Str("hello");
 341   EXPECT_EQ(2U, Str.edit_distance("hill"));
 342 }
 343
 344 TEST(StringRefTest, Misc) {
 345   std::string Storage;
 346   raw_string_ostream OS(Storage);
 347   OS << StringRef("hello");
 348   EXPECT_EQ("hello", OS.str());
 349 }
 350
 351 TEST(StringRefTest, Hashing) {
 352   EXPECT_EQ(hash_value(std::string()), hash_value(StringRef()));
 353   EXPECT_EQ(hash_value(std::string()), hash_value(StringRef("")));
 354   std::string S = "hello world";
 355   hash_code H = hash_value(S);
 356   EXPECT_EQ(H, hash_value(StringRef("hello world")));
 357   EXPECT_EQ(H, hash_value(StringRef(S)));
 358   EXPECT_NE(H, hash_value(StringRef("hello worl")));
 359   EXPECT_EQ(hash_value(std::string("hello worl")),
 360             hash_value(StringRef("hello worl")));
 361   EXPECT_NE(H, hash_value(StringRef("hello world ")));
 362   EXPECT_EQ(hash_value(std::string("hello world ")),
 363             hash_value(StringRef("hello world ")));
 364   EXPECT_EQ(H, hash_value(StringRef("hello world\0")));
 365   EXPECT_NE(hash_value(std::string("ello worl")),
 366             hash_value(StringRef("hello world").slice(1, -1)));
 367 }
 368
 369 struct UnsignedPair {
 370   const char *Str;
 371   uint64_t Expected;
 372 } Unsigned[] =
 373   { {"0", 0}
 374   , {"255", 255}
 375   , {"256", 256}
 376   , {"65535", 65535}
 377   , {"65536", 65536}
 378   , {"4294967295", 4294967295ULL}
 379   , {"4294967296", 4294967296ULL}
 380   , {"18446744073709551615", 18446744073709551615ULL}
 381   , {"042", 34}
 382   , {"0x42", 66}
 383   , {"0b101010", 42}
 384   };
 385
 386 struct SignedPair {
 387   const char *Str;
 388   int64_t Expected;
 389 } Signed[] =
 390   { {"0", 0}
 391   , {"-0", 0}
 392   , {"127", 127}
 393   , {"128", 128}
 394   , {"-128", -128}
 395   , {"-129", -129}
 396   , {"32767", 32767}
 397   , {"32768", 32768}
 398   , {"-32768", -32768}
 399   , {"-32769", -32769}
 400   , {"2147483647", 2147483647LL}
 401   , {"2147483648", 2147483648LL}
 402   , {"-2147483648", -2147483648LL}
 403   , {"-2147483649", -2147483649LL}
 404   , {"-9223372036854775808", -(9223372036854775807LL) - 1}
 405   , {"042", 34}
 406   , {"0x42", 66}
 407   , {"0b101010", 42}
 408   , {"-042", -34}
 409   , {"-0x42", -66}
 410   , {"-0b101010", -42}
 411   };
 412
 413 TEST(StringRefTest, getAsInteger) {
 414   uint8_t U8;
 415   uint16_t U16;
 416   uint32_t U32;
 417   uint64_t U64;
 418
 419   for (size_t i = 0; i < array_lengthof(Unsigned); ++i) {
 420     bool U8Success = StringRef(Unsigned[i].Str).getAsInteger(0, U8);
 421     if (static_cast<uint8_t>(Unsigned[i].Expected) == Unsigned[i].Expected) {
 422       ASSERT_FALSE(U8Success);
 423       EXPECT_EQ(U8, Unsigned[i].Expected);
 424     } else {
 425       ASSERT_TRUE(U8Success);
 426     }
 427     bool U16Success = StringRef(Unsigned[i].Str).getAsInteger(0, U16);
 428     if (static_cast<uint16_t>(Unsigned[i].Expected) == Unsigned[i].Expected) {
 429       ASSERT_FALSE(U16Success);
 430       EXPECT_EQ(U16, Unsigned[i].Expected);
 431     } else {
 432       ASSERT_TRUE(U16Success);
 433     }
 434     bool U32Success = StringRef(Unsigned[i].Str).getAsInteger(0, U32);
 435     if (static_cast<uint32_t>(Unsigned[i].Expected) == Unsigned[i].Expected) {
 436       ASSERT_FALSE(U32Success);
 437       EXPECT_EQ(U32, Unsigned[i].Expected);
 438     } else {
 439       ASSERT_TRUE(U32Success);
 440     }
 441     bool U64Success = StringRef(Unsigned[i].Str).getAsInteger(0, U64);
 442     if (static_cast<uint64_t>(Unsigned[i].Expected) == Unsigned[i].Expected) {
 443       ASSERT_FALSE(U64Success);
 444       EXPECT_EQ(U64, Unsigned[i].Expected);
 445     } else {
 446       ASSERT_TRUE(U64Success);
 447     }
 448   }
 449
 450   int8_t S8;
 451   int16_t S16;
 452   int32_t S32;
 453   int64_t S64;
 454
 455   for (size_t i = 0; i < array_lengthof(Signed); ++i) {
 456     bool S8Success = StringRef(Signed[i].Str).getAsInteger(0, S8);
 457     if (static_cast<int8_t>(Signed[i].Expected) == Signed[i].Expected) {
 458       ASSERT_FALSE(S8Success);
 459       EXPECT_EQ(S8, Signed[i].Expected);
 460     } else {
 461       ASSERT_TRUE(S8Success);
 462     }
 463     bool S16Success = StringRef(Signed[i].Str).getAsInteger(0, S16);
 464     if (static_cast<int16_t>(Signed[i].Expected) == Signed[i].Expected) {
 465       ASSERT_FALSE(S16Success);
 466       EXPECT_EQ(S16, Signed[i].Expected);
 467     } else {
 468       ASSERT_TRUE(S16Success);
 469     }
 470     bool S32Success = StringRef(Signed[i].Str).getAsInteger(0, S32);
 471     if (static_cast<int32_t>(Signed[i].Expected) == Signed[i].Expected) {
 472       ASSERT_FALSE(S32Success);
 473       EXPECT_EQ(S32, Signed[i].Expected);
 474     } else {
 475       ASSERT_TRUE(S32Success);
 476     }
 477     bool S64Success = StringRef(Signed[i].Str).getAsInteger(0, S64);
 478     if (static_cast<int64_t>(Signed[i].Expected) == Signed[i].Expected) {
 479       ASSERT_FALSE(S64Success);
 480       EXPECT_EQ(S64, Signed[i].Expected);
 481     } else {
 482       ASSERT_TRUE(S64Success);
 483     }
 484   }
 485 }
 486
 487
 488 static const char* BadStrings[] = {
 489     "18446744073709551617"  // value just over max
 490   , "123456789012345678901" // value way too large
 491   , "4t23v"                 // illegal decimal characters
 492   , "0x123W56"              // illegal hex characters
 493   , "0b2"                   // illegal bin characters
 494   , "08"                    // illegal oct characters
 495   , "0o8"                   // illegal oct characters
 496   , "-123"                  // negative unsigned value
 497 };
 498
 499
 500 TEST(StringRefTest, getAsUnsignedIntegerBadStrings) {
 501   unsigned long long U64;
 502   for (size_t i = 0; i < array_lengthof(BadStrings); ++i) {
 503     bool IsBadNumber = StringRef(BadStrings[i]).getAsInteger(0, U64);
 504     ASSERT_TRUE(IsBadNumber);
 505   }
 506 }
 507
 508 static const char *join_input[] = { "a", "b", "c" };
 509 static const char join_result1[] = "a";
 510 static const char join_result2[] = "a:b:c";
 511 static const char join_result3[] = "a::b::c";
 512
 513 TEST(StringRefTest, joinStrings) {
 514   std::vector<StringRef> v1;
 515   std::vector<std::string> v2;
 516   for (size_t i = 0; i < array_lengthof(join_input); ++i) {
 517     v1.push_back(join_input[i]);
 518     v2.push_back(join_input[i]);
 519   }
 520
 521   bool v1_join1 = join(v1.begin(), v1.begin() + 1, ":") == join_result1;
 522   EXPECT_TRUE(v1_join1);
 523   bool v1_join2 = join(v1.begin(), v1.end(), ":") == join_result2;
 524   EXPECT_TRUE(v1_join2);
 525   bool v1_join3 = join(v1.begin(), v1.end(), "::") == join_result3;
 526   EXPECT_TRUE(v1_join3);
 527
 528   bool v2_join1 = join(v2.begin(), v2.begin() + 1, ":") == join_result1;
 529   EXPECT_TRUE(v2_join1);
 530   bool v2_join2 = join(v2.begin(), v2.end(), ":") == join_result2;
 531   EXPECT_TRUE(v2_join2);
 532   bool v2_join3 = join(v2.begin(), v2.end(), "::") == join_result3;
 533   EXPECT_TRUE(v2_join3);
 534 }
 535
 536
 537 TEST(StringRefTest, AllocatorCopy) {
 538   BumpPtrAllocator Alloc;
 539   StringRef Str1 = "hello";
 540   StringRef Str2 = "bye";
 541   StringRef Str1c = Str1.copy(Alloc);
 542   StringRef Str2c = Str2.copy(Alloc);
 543   EXPECT_TRUE(Str1.equals(Str1c));
 544   EXPECT_NE(Str1.data(), Str1c.data());
 545   EXPECT_TRUE(Str2.equals(Str2c));
 546   EXPECT_NE(Str2.data(), Str2c.data());
 547 }
 548
 549
 550 } // end anonymous namespace