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"
18using namespace llvm;
19
20namespace llvm {
21
22std::ostream &operator<<(std::ostream &OS, const StringRef &S) {
23  OS << S.str();
24  return OS;
25}
26
27std::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
35namespace {
36TEST(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
43TEST(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
50TEST(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
91TEST(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
108TEST(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
116TEST(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
125TEST(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
150TEST(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
230TEST(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
254TEST(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
262TEST(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
272TEST(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
281TEST(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
291TEST(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
328TEST(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
339TEST(StringRefTest, EditDistance) {
340  StringRef Str("hello");
341  EXPECT_EQ(2U, Str.edit_distance("hill"));
342}
343
344TEST(StringRefTest, Misc) {
345  std::string Storage;
346  raw_string_ostream OS(Storage);
347  OS << StringRef("hello");
348  EXPECT_EQ("hello", OS.str());
349}
350
351TEST(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
369struct 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
386struct 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
413TEST(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
488static 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
500TEST(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
508static const char *join_input[] = { "a", "b", "c" };
509static const char join_result1[] = "a";
510static const char join_result2[] = "a:b:c";
511static const char join_result3[] = "a::b::c";
512
513TEST(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
537TEST(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
551