1 //===- llvm/unittest/ADT/StringRefTest.cpp - StringRef unit tests ---------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "gtest/gtest.h"
11 #include "llvm/ADT/StringRef.h"
12 #include "llvm/ADT/Hashing.h"
13 #include "llvm/ADT/SmallVector.h"
14 #include "llvm/Support/raw_ostream.h"
19 std::ostream &operator<<(std::ostream &OS, const StringRef &S) {
24 std::ostream &operator<<(std::ostream &OS,
25 const std::pair<StringRef, StringRef> &P) {
26 OS << "(" << P.first << ", " << P.second << ")";
33 TEST(StringRefTest, Construction) {
34 EXPECT_EQ("", StringRef());
35 EXPECT_EQ("hello", StringRef("hello"));
36 EXPECT_EQ("hello", StringRef("hello world", 5));
37 EXPECT_EQ("hello", StringRef(std::string("hello")));
40 TEST(StringRefTest, Iteration) {
42 const char *p = "hello";
43 for (const char *it = S.begin(), *ie = S.end(); it != ie; ++it, ++p)
47 TEST(StringRefTest, StringOps) {
48 const char *p = "hello";
49 EXPECT_EQ(p, StringRef(p, 0).data());
50 EXPECT_TRUE(StringRef().empty());
51 EXPECT_EQ((size_t) 5, StringRef("hello").size());
52 EXPECT_EQ(-1, StringRef("aab").compare("aad"));
53 EXPECT_EQ( 0, StringRef("aab").compare("aab"));
54 EXPECT_EQ( 1, StringRef("aab").compare("aaa"));
55 EXPECT_EQ(-1, StringRef("aab").compare("aabb"));
56 EXPECT_EQ( 1, StringRef("aab").compare("aa"));
57 EXPECT_EQ( 1, StringRef("\xFF").compare("\1"));
59 EXPECT_EQ(-1, StringRef("AaB").compare_lower("aAd"));
60 EXPECT_EQ( 0, StringRef("AaB").compare_lower("aab"));
61 EXPECT_EQ( 1, StringRef("AaB").compare_lower("AAA"));
62 EXPECT_EQ(-1, StringRef("AaB").compare_lower("aaBb"));
63 EXPECT_EQ( 1, StringRef("AaB").compare_lower("aA"));
64 EXPECT_EQ( 1, StringRef("\xFF").compare_lower("\1"));
66 EXPECT_EQ(-1, StringRef("aab").compare_numeric("aad"));
67 EXPECT_EQ( 0, StringRef("aab").compare_numeric("aab"));
68 EXPECT_EQ( 1, StringRef("aab").compare_numeric("aaa"));
69 EXPECT_EQ(-1, StringRef("aab").compare_numeric("aabb"));
70 EXPECT_EQ( 1, StringRef("aab").compare_numeric("aa"));
71 EXPECT_EQ(-1, StringRef("1").compare_numeric("10"));
72 EXPECT_EQ( 0, StringRef("10").compare_numeric("10"));
73 EXPECT_EQ( 0, StringRef("10a").compare_numeric("10a"));
74 EXPECT_EQ( 1, StringRef("2").compare_numeric("1"));
75 EXPECT_EQ( 0, StringRef("llvm_v1i64_ty").compare_numeric("llvm_v1i64_ty"));
76 EXPECT_EQ( 1, StringRef("\xFF").compare_numeric("\1"));
77 EXPECT_EQ( 1, StringRef("V16").compare_numeric("V1_q0"));
78 EXPECT_EQ(-1, StringRef("V1_q0").compare_numeric("V16"));
79 EXPECT_EQ(-1, StringRef("V8_q0").compare_numeric("V16"));
80 EXPECT_EQ( 1, StringRef("V16").compare_numeric("V8_q0"));
81 EXPECT_EQ(-1, StringRef("V1_q0").compare_numeric("V8_q0"));
82 EXPECT_EQ( 1, StringRef("V8_q0").compare_numeric("V1_q0"));
85 TEST(StringRefTest, Operators) {
86 EXPECT_EQ("", StringRef());
87 EXPECT_TRUE(StringRef("aab") < StringRef("aad"));
88 EXPECT_FALSE(StringRef("aab") < StringRef("aab"));
89 EXPECT_TRUE(StringRef("aab") <= StringRef("aab"));
90 EXPECT_FALSE(StringRef("aab") <= StringRef("aaa"));
91 EXPECT_TRUE(StringRef("aad") > StringRef("aab"));
92 EXPECT_FALSE(StringRef("aab") > StringRef("aab"));
93 EXPECT_TRUE(StringRef("aab") >= StringRef("aab"));
94 EXPECT_FALSE(StringRef("aaa") >= StringRef("aab"));
95 EXPECT_EQ(StringRef("aab"), StringRef("aab"));
96 EXPECT_FALSE(StringRef("aab") == StringRef("aac"));
97 EXPECT_FALSE(StringRef("aab") != StringRef("aab"));
98 EXPECT_TRUE(StringRef("aab") != StringRef("aac"));
99 EXPECT_EQ('a', StringRef("aab")[1]);
102 TEST(StringRefTest, Substr) {
103 StringRef Str("hello");
104 EXPECT_EQ("lo", Str.substr(3));
105 EXPECT_EQ("", Str.substr(100));
106 EXPECT_EQ("hello", Str.substr(0, 100));
107 EXPECT_EQ("o", Str.substr(4, 10));
110 TEST(StringRefTest, Slice) {
111 StringRef Str("hello");
112 EXPECT_EQ("l", Str.slice(2, 3));
113 EXPECT_EQ("ell", Str.slice(1, 4));
114 EXPECT_EQ("llo", Str.slice(2, 100));
115 EXPECT_EQ("", Str.slice(2, 1));
116 EXPECT_EQ("", Str.slice(10, 20));
119 TEST(StringRefTest, Split) {
120 StringRef Str("hello");
121 EXPECT_EQ(std::make_pair(StringRef("hello"), StringRef("")),
123 EXPECT_EQ(std::make_pair(StringRef("h"), StringRef("llo")),
125 EXPECT_EQ(std::make_pair(StringRef(""), StringRef("ello")),
127 EXPECT_EQ(std::make_pair(StringRef("he"), StringRef("lo")),
129 EXPECT_EQ(std::make_pair(StringRef("hell"), StringRef("")),
132 EXPECT_EQ(std::make_pair(StringRef("hello"), StringRef("")),
134 EXPECT_EQ(std::make_pair(StringRef("h"), StringRef("llo")),
136 EXPECT_EQ(std::make_pair(StringRef(""), StringRef("ello")),
138 EXPECT_EQ(std::make_pair(StringRef("hel"), StringRef("o")),
140 EXPECT_EQ(std::make_pair(StringRef("hell"), StringRef("")),
144 TEST(StringRefTest, Split2) {
145 SmallVector<StringRef, 5> parts;
146 SmallVector<StringRef, 5> expected;
148 expected.push_back("ab"); expected.push_back("c");
149 StringRef(",ab,,c,").split(parts, ",", -1, false);
150 EXPECT_TRUE(parts == expected);
152 expected.clear(); parts.clear();
153 expected.push_back(""); expected.push_back("ab"); expected.push_back("");
154 expected.push_back("c"); expected.push_back("");
155 StringRef(",ab,,c,").split(parts, ",", -1, true);
156 EXPECT_TRUE(parts == expected);
158 expected.clear(); parts.clear();
159 expected.push_back("");
160 StringRef("").split(parts, ",", -1, true);
161 EXPECT_TRUE(parts == expected);
163 expected.clear(); parts.clear();
164 StringRef("").split(parts, ",", -1, false);
165 EXPECT_TRUE(parts == expected);
167 expected.clear(); parts.clear();
168 StringRef(",").split(parts, ",", -1, false);
169 EXPECT_TRUE(parts == expected);
171 expected.clear(); parts.clear();
172 expected.push_back(""); expected.push_back("");
173 StringRef(",").split(parts, ",", -1, true);
174 EXPECT_TRUE(parts == expected);
176 expected.clear(); parts.clear();
177 expected.push_back("a"); expected.push_back("b");
178 StringRef("a,b").split(parts, ",", -1, true);
179 EXPECT_TRUE(parts == expected);
182 expected.clear(); parts.clear();
183 expected.push_back("a,,b,c");
184 StringRef("a,,b,c").split(parts, ",", 0, true);
185 EXPECT_TRUE(parts == expected);
187 expected.clear(); parts.clear();
188 expected.push_back("a,,b,c");
189 StringRef("a,,b,c").split(parts, ",", 0, false);
190 EXPECT_TRUE(parts == expected);
192 expected.clear(); parts.clear();
193 expected.push_back("a"); expected.push_back(",b,c");
194 StringRef("a,,b,c").split(parts, ",", 1, true);
195 EXPECT_TRUE(parts == expected);
197 expected.clear(); parts.clear();
198 expected.push_back("a"); expected.push_back(",b,c");
199 StringRef("a,,b,c").split(parts, ",", 1, false);
200 EXPECT_TRUE(parts == expected);
202 expected.clear(); parts.clear();
203 expected.push_back("a"); expected.push_back(""); expected.push_back("b,c");
204 StringRef("a,,b,c").split(parts, ",", 2, true);
205 EXPECT_TRUE(parts == expected);
207 expected.clear(); parts.clear();
208 expected.push_back("a"); expected.push_back("b,c");
209 StringRef("a,,b,c").split(parts, ",", 2, false);
210 EXPECT_TRUE(parts == expected);
212 expected.clear(); parts.clear();
213 expected.push_back("a"); expected.push_back(""); expected.push_back("b");
214 expected.push_back("c");
215 StringRef("a,,b,c").split(parts, ",", 3, true);
216 EXPECT_TRUE(parts == expected);
218 expected.clear(); parts.clear();
219 expected.push_back("a"); expected.push_back("b"); expected.push_back("c");
220 StringRef("a,,b,c").split(parts, ",", 3, false);
221 EXPECT_TRUE(parts == expected);
224 TEST(StringRefTest, Trim) {
225 StringRef Str0("hello");
226 StringRef Str1(" hello ");
227 StringRef Str2(" hello ");
229 EXPECT_EQ(StringRef("hello"), Str0.rtrim());
230 EXPECT_EQ(StringRef(" hello"), Str1.rtrim());
231 EXPECT_EQ(StringRef(" hello"), Str2.rtrim());
232 EXPECT_EQ(StringRef("hello"), Str0.ltrim());
233 EXPECT_EQ(StringRef("hello "), Str1.ltrim());
234 EXPECT_EQ(StringRef("hello "), Str2.ltrim());
235 EXPECT_EQ(StringRef("hello"), Str0.trim());
236 EXPECT_EQ(StringRef("hello"), Str1.trim());
237 EXPECT_EQ(StringRef("hello"), Str2.trim());
239 EXPECT_EQ(StringRef("ello"), Str0.trim("hhhhhhhhhhh"));
241 EXPECT_EQ(StringRef(""), StringRef("").trim());
242 EXPECT_EQ(StringRef(""), StringRef(" ").trim());
243 EXPECT_EQ(StringRef("\0", 1), StringRef(" \0 ", 3).trim());
244 EXPECT_EQ(StringRef("\0\0", 2), StringRef("\0\0", 2).trim());
245 EXPECT_EQ(StringRef("x"), StringRef("\0\0x\0\0", 5).trim(StringRef("\0", 1)));
248 TEST(StringRefTest, StartsWith) {
249 StringRef Str("hello");
250 EXPECT_TRUE(Str.startswith("he"));
251 EXPECT_FALSE(Str.startswith("helloworld"));
252 EXPECT_FALSE(Str.startswith("hi"));
255 TEST(StringRefTest, EndsWith) {
256 StringRef Str("hello");
257 EXPECT_TRUE(Str.endswith("lo"));
258 EXPECT_FALSE(Str.endswith("helloworld"));
259 EXPECT_FALSE(Str.endswith("worldhello"));
260 EXPECT_FALSE(Str.endswith("so"));
263 TEST(StringRefTest, Find) {
264 StringRef Str("hello");
265 EXPECT_EQ(2U, Str.find('l'));
266 EXPECT_EQ(StringRef::npos, Str.find('z'));
267 EXPECT_EQ(StringRef::npos, Str.find("helloworld"));
268 EXPECT_EQ(0U, Str.find("hello"));
269 EXPECT_EQ(1U, Str.find("ello"));
270 EXPECT_EQ(StringRef::npos, Str.find("zz"));
271 EXPECT_EQ(2U, Str.find("ll", 2));
272 EXPECT_EQ(StringRef::npos, Str.find("ll", 3));
273 EXPECT_EQ(0U, Str.find(""));
274 StringRef LongStr("hellx xello hell ello world foo bar hello");
275 EXPECT_EQ(36U, LongStr.find("hello"));
276 EXPECT_EQ(28U, LongStr.find("foo"));
277 EXPECT_EQ(12U, LongStr.find("hell", 2));
278 EXPECT_EQ(0U, LongStr.find(""));
280 EXPECT_EQ(3U, Str.rfind('l'));
281 EXPECT_EQ(StringRef::npos, Str.rfind('z'));
282 EXPECT_EQ(StringRef::npos, Str.rfind("helloworld"));
283 EXPECT_EQ(0U, Str.rfind("hello"));
284 EXPECT_EQ(1U, Str.rfind("ello"));
285 EXPECT_EQ(StringRef::npos, Str.rfind("zz"));
287 EXPECT_EQ(2U, Str.find_first_of('l'));
288 EXPECT_EQ(1U, Str.find_first_of("el"));
289 EXPECT_EQ(StringRef::npos, Str.find_first_of("xyz"));
291 EXPECT_EQ(1U, Str.find_first_not_of('h'));
292 EXPECT_EQ(4U, Str.find_first_not_of("hel"));
293 EXPECT_EQ(StringRef::npos, Str.find_first_not_of("hello"));
295 EXPECT_EQ(3U, Str.find_last_not_of('o'));
296 EXPECT_EQ(1U, Str.find_last_not_of("lo"));
297 EXPECT_EQ(StringRef::npos, Str.find_last_not_of("helo"));
300 TEST(StringRefTest, Count) {
301 StringRef Str("hello");
302 EXPECT_EQ(2U, Str.count('l'));
303 EXPECT_EQ(1U, Str.count('o'));
304 EXPECT_EQ(0U, Str.count('z'));
305 EXPECT_EQ(0U, Str.count("helloworld"));
306 EXPECT_EQ(1U, Str.count("hello"));
307 EXPECT_EQ(1U, Str.count("ello"));
308 EXPECT_EQ(0U, Str.count("zz"));
311 TEST(StringRefTest, EditDistance) {
312 StringRef Str("hello");
313 EXPECT_EQ(2U, Str.edit_distance("hill"));
316 TEST(StringRefTest, Misc) {
318 raw_string_ostream OS(Storage);
319 OS << StringRef("hello");
320 EXPECT_EQ("hello", OS.str());
323 TEST(StringRefTest, Hashing) {
324 EXPECT_EQ(hash_value(std::string()), hash_value(StringRef()));
325 EXPECT_EQ(hash_value(std::string()), hash_value(StringRef("")));
326 std::string S = "hello world";
327 hash_code H = hash_value(S);
328 EXPECT_EQ(H, hash_value(StringRef("hello world")));
329 EXPECT_EQ(H, hash_value(StringRef(S)));
330 EXPECT_NE(H, hash_value(StringRef("hello worl")));
331 EXPECT_EQ(hash_value(std::string("hello worl")),
332 hash_value(StringRef("hello worl")));
333 EXPECT_NE(H, hash_value(StringRef("hello world ")));
334 EXPECT_EQ(hash_value(std::string("hello world ")),
335 hash_value(StringRef("hello world ")));
336 EXPECT_EQ(H, hash_value(StringRef("hello world\0")));
337 EXPECT_NE(hash_value(std::string("ello worl")),
338 hash_value(StringRef("hello world").slice(1, -1)));
341 struct UnsignedPair {
350 , {"4294967295", 4294967295ULL}
351 , {"4294967296", 4294967296ULL}
352 , {"18446744073709551615", 18446744073709551615ULL}
372 , {"2147483647", 2147483647LL}
373 , {"2147483648", 2147483648LL}
374 , {"-2147483648", -2147483648LL}
375 , {"-2147483649", -2147483649LL}
376 , {"-9223372036854775808", -(9223372036854775807LL) - 1}
385 TEST(StringRefTest, getAsInteger) {
391 for (size_t i = 0; i < array_lengthof(Unsigned); ++i) {
392 bool U8Success = StringRef(Unsigned[i].Str).getAsInteger(0, U8);
393 if (static_cast<uint8_t>(Unsigned[i].Expected) == Unsigned[i].Expected) {
394 ASSERT_FALSE(U8Success);
395 EXPECT_EQ(U8, Unsigned[i].Expected);
397 ASSERT_TRUE(U8Success);
399 bool U16Success = StringRef(Unsigned[i].Str).getAsInteger(0, U16);
400 if (static_cast<uint16_t>(Unsigned[i].Expected) == Unsigned[i].Expected) {
401 ASSERT_FALSE(U16Success);
402 EXPECT_EQ(U16, Unsigned[i].Expected);
404 ASSERT_TRUE(U16Success);
406 bool U32Success = StringRef(Unsigned[i].Str).getAsInteger(0, U32);
407 if (static_cast<uint32_t>(Unsigned[i].Expected) == Unsigned[i].Expected) {
408 ASSERT_FALSE(U32Success);
409 EXPECT_EQ(U32, Unsigned[i].Expected);
411 ASSERT_TRUE(U32Success);
413 bool U64Success = StringRef(Unsigned[i].Str).getAsInteger(0, U64);
414 if (static_cast<uint64_t>(Unsigned[i].Expected) == Unsigned[i].Expected) {
415 ASSERT_FALSE(U64Success);
416 EXPECT_EQ(U64, Unsigned[i].Expected);
418 ASSERT_TRUE(U64Success);
427 for (size_t i = 0; i < array_lengthof(Signed); ++i) {
428 bool S8Success = StringRef(Signed[i].Str).getAsInteger(0, S8);
429 if (static_cast<int8_t>(Signed[i].Expected) == Signed[i].Expected) {
430 ASSERT_FALSE(S8Success);
431 EXPECT_EQ(S8, Signed[i].Expected);
433 ASSERT_TRUE(S8Success);
435 bool S16Success = StringRef(Signed[i].Str).getAsInteger(0, S16);
436 if (static_cast<int16_t>(Signed[i].Expected) == Signed[i].Expected) {
437 ASSERT_FALSE(S16Success);
438 EXPECT_EQ(S16, Signed[i].Expected);
440 ASSERT_TRUE(S16Success);
442 bool S32Success = StringRef(Signed[i].Str).getAsInteger(0, S32);
443 if (static_cast<int32_t>(Signed[i].Expected) == Signed[i].Expected) {
444 ASSERT_FALSE(S32Success);
445 EXPECT_EQ(S32, Signed[i].Expected);
447 ASSERT_TRUE(S32Success);
449 bool S64Success = StringRef(Signed[i].Str).getAsInteger(0, S64);
450 if (static_cast<int64_t>(Signed[i].Expected) == Signed[i].Expected) {
451 ASSERT_FALSE(S64Success);
452 EXPECT_EQ(S64, Signed[i].Expected);
454 ASSERT_TRUE(S64Success);
459 } // end anonymous namespace