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, StartsWith) {
225 StringRef Str("hello");
226 EXPECT_TRUE(Str.startswith("he"));
227 EXPECT_FALSE(Str.startswith("helloworld"));
228 EXPECT_FALSE(Str.startswith("hi"));
231 TEST(StringRefTest, EndsWith) {
232 StringRef Str("hello");
233 EXPECT_TRUE(Str.endswith("lo"));
234 EXPECT_FALSE(Str.endswith("helloworld"));
235 EXPECT_FALSE(Str.endswith("worldhello"));
236 EXPECT_FALSE(Str.endswith("so"));
239 TEST(StringRefTest, Find) {
240 StringRef Str("hello");
241 EXPECT_EQ(2U, Str.find('l'));
242 EXPECT_EQ(StringRef::npos, Str.find('z'));
243 EXPECT_EQ(StringRef::npos, Str.find("helloworld"));
244 EXPECT_EQ(0U, Str.find("hello"));
245 EXPECT_EQ(1U, Str.find("ello"));
246 EXPECT_EQ(StringRef::npos, Str.find("zz"));
247 EXPECT_EQ(2U, Str.find("ll", 2));
248 EXPECT_EQ(StringRef::npos, Str.find("ll", 3));
249 EXPECT_EQ(0U, Str.find(""));
250 StringRef LongStr("hellx xello hell ello world foo bar hello");
251 EXPECT_EQ(36U, LongStr.find("hello"));
252 EXPECT_EQ(28U, LongStr.find("foo"));
253 EXPECT_EQ(12U, LongStr.find("hell", 2));
254 EXPECT_EQ(0U, LongStr.find(""));
256 EXPECT_EQ(3U, Str.rfind('l'));
257 EXPECT_EQ(StringRef::npos, Str.rfind('z'));
258 EXPECT_EQ(StringRef::npos, Str.rfind("helloworld"));
259 EXPECT_EQ(0U, Str.rfind("hello"));
260 EXPECT_EQ(1U, Str.rfind("ello"));
261 EXPECT_EQ(StringRef::npos, Str.rfind("zz"));
263 EXPECT_EQ(2U, Str.find_first_of('l'));
264 EXPECT_EQ(1U, Str.find_first_of("el"));
265 EXPECT_EQ(StringRef::npos, Str.find_first_of("xyz"));
267 EXPECT_EQ(1U, Str.find_first_not_of('h'));
268 EXPECT_EQ(4U, Str.find_first_not_of("hel"));
269 EXPECT_EQ(StringRef::npos, Str.find_first_not_of("hello"));
272 TEST(StringRefTest, Count) {
273 StringRef Str("hello");
274 EXPECT_EQ(2U, Str.count('l'));
275 EXPECT_EQ(1U, Str.count('o'));
276 EXPECT_EQ(0U, Str.count('z'));
277 EXPECT_EQ(0U, Str.count("helloworld"));
278 EXPECT_EQ(1U, Str.count("hello"));
279 EXPECT_EQ(1U, Str.count("ello"));
280 EXPECT_EQ(0U, Str.count("zz"));
283 TEST(StringRefTest, EditDistance) {
284 StringRef Str("hello");
285 EXPECT_EQ(2U, Str.edit_distance("hill"));
288 TEST(StringRefTest, Misc) {
290 raw_string_ostream OS(Storage);
291 OS << StringRef("hello");
292 EXPECT_EQ("hello", OS.str());
295 TEST(StringRefTest, Hashing) {
296 EXPECT_EQ(hash_value(std::string()), hash_value(StringRef()));
297 EXPECT_EQ(hash_value(std::string()), hash_value(StringRef("")));
298 std::string S = "hello world";
299 hash_code H = hash_value(S);
300 EXPECT_EQ(H, hash_value(StringRef("hello world")));
301 EXPECT_EQ(H, hash_value(StringRef(S)));
302 EXPECT_NE(H, hash_value(StringRef("hello worl")));
303 EXPECT_EQ(hash_value(std::string("hello worl")),
304 hash_value(StringRef("hello worl")));
305 EXPECT_NE(H, hash_value(StringRef("hello world ")));
306 EXPECT_EQ(hash_value(std::string("hello world ")),
307 hash_value(StringRef("hello world ")));
308 EXPECT_EQ(H, hash_value(StringRef("hello world\0")));
309 EXPECT_NE(hash_value(std::string("ello worl")),
310 hash_value(StringRef("hello world").slice(1, -1)));
313 struct UnsignedPair {
322 , {"4294967295", 4294967295ULL}
323 , {"4294967296", 4294967296ULL}
324 , {"18446744073709551615", 18446744073709551615ULL}
344 , {"2147483647", 2147483647LL}
345 , {"2147483648", 2147483648LL}
346 , {"-2147483648", -2147483648LL}
347 , {"-2147483649", -2147483649LL}
348 , {"-9223372036854775808", -(9223372036854775807LL) - 1}
357 TEST(StringRefTest, getAsInteger) {
363 for (size_t i = 0; i < array_lengthof(Unsigned); ++i) {
364 bool U8Success = StringRef(Unsigned[i].Str).getAsInteger(0, U8);
365 if (static_cast<uint8_t>(Unsigned[i].Expected) == Unsigned[i].Expected) {
366 ASSERT_FALSE(U8Success);
367 EXPECT_EQ(U8, Unsigned[i].Expected);
369 ASSERT_TRUE(U8Success);
371 bool U16Success = StringRef(Unsigned[i].Str).getAsInteger(0, U16);
372 if (static_cast<uint16_t>(Unsigned[i].Expected) == Unsigned[i].Expected) {
373 ASSERT_FALSE(U16Success);
374 EXPECT_EQ(U16, Unsigned[i].Expected);
376 ASSERT_TRUE(U16Success);
378 bool U32Success = StringRef(Unsigned[i].Str).getAsInteger(0, U32);
379 if (static_cast<uint32_t>(Unsigned[i].Expected) == Unsigned[i].Expected) {
380 ASSERT_FALSE(U32Success);
381 EXPECT_EQ(U32, Unsigned[i].Expected);
383 ASSERT_TRUE(U32Success);
385 bool U64Success = StringRef(Unsigned[i].Str).getAsInteger(0, U64);
386 if (static_cast<uint64_t>(Unsigned[i].Expected) == Unsigned[i].Expected) {
387 ASSERT_FALSE(U64Success);
388 EXPECT_EQ(U64, Unsigned[i].Expected);
390 ASSERT_TRUE(U64Success);
399 for (size_t i = 0; i < array_lengthof(Signed); ++i) {
400 bool S8Success = StringRef(Signed[i].Str).getAsInteger(0, S8);
401 if (static_cast<int8_t>(Signed[i].Expected) == Signed[i].Expected) {
402 ASSERT_FALSE(S8Success);
403 EXPECT_EQ(S8, Signed[i].Expected);
405 ASSERT_TRUE(S8Success);
407 bool S16Success = StringRef(Signed[i].Str).getAsInteger(0, S16);
408 if (static_cast<int16_t>(Signed[i].Expected) == Signed[i].Expected) {
409 ASSERT_FALSE(S16Success);
410 EXPECT_EQ(S16, Signed[i].Expected);
412 ASSERT_TRUE(S16Success);
414 bool S32Success = StringRef(Signed[i].Str).getAsInteger(0, S32);
415 if (static_cast<int32_t>(Signed[i].Expected) == Signed[i].Expected) {
416 ASSERT_FALSE(S32Success);
417 EXPECT_EQ(S32, Signed[i].Expected);
419 ASSERT_TRUE(S32Success);
421 bool S64Success = StringRef(Signed[i].Str).getAsInteger(0, S64);
422 if (static_cast<int64_t>(Signed[i].Expected) == Signed[i].Expected) {
423 ASSERT_FALSE(S64Success);
424 EXPECT_EQ(S64, Signed[i].Expected);
426 ASSERT_TRUE(S64Success);
431 } // end anonymous namespace