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