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 "gtest/gtest.h"
11 #include "llvm/ADT/StringRef.h"
12 #include "llvm/ADT/SmallVector.h"
13 #include "llvm/Support/raw_ostream.h"
14 using namespace llvm;
15
16 namespace llvm {
17
operator <<(std::ostream & OS,const StringRef & S)18 std::ostream &operator<<(std::ostream &OS, const StringRef &S) {
19 OS << S.str();
20 return OS;
21 }
22
operator <<(std::ostream & OS,const std::pair<StringRef,StringRef> & P)23 std::ostream &operator<<(std::ostream &OS,
24 const std::pair<StringRef, StringRef> &P) {
25 OS << "(" << P.first << ", " << P.second << ")";
26 return OS;
27 }
28
29 }
30
31 namespace {
TEST(StringRefTest,Construction)32 TEST(StringRefTest, Construction) {
33 EXPECT_EQ("", StringRef());
34 EXPECT_EQ("hello", StringRef("hello"));
35 EXPECT_EQ("hello", StringRef("hello world", 5));
36 EXPECT_EQ("hello", StringRef(std::string("hello")));
37 }
38
TEST(StringRefTest,Iteration)39 TEST(StringRefTest, Iteration) {
40 StringRef S("hello");
41 const char *p = "hello";
42 for (const char *it = S.begin(), *ie = S.end(); it != ie; ++it, ++p)
43 EXPECT_EQ(*it, *p);
44 }
45
TEST(StringRefTest,StringOps)46 TEST(StringRefTest, StringOps) {
47 const char *p = "hello";
48 EXPECT_EQ(p, StringRef(p, 0).data());
49 EXPECT_TRUE(StringRef().empty());
50 EXPECT_EQ((size_t) 5, StringRef("hello").size());
51 EXPECT_EQ(-1, StringRef("aab").compare("aad"));
52 EXPECT_EQ( 0, StringRef("aab").compare("aab"));
53 EXPECT_EQ( 1, StringRef("aab").compare("aaa"));
54 EXPECT_EQ(-1, StringRef("aab").compare("aabb"));
55 EXPECT_EQ( 1, StringRef("aab").compare("aa"));
56 EXPECT_EQ( 1, StringRef("\xFF").compare("\1"));
57
58 EXPECT_EQ(-1, StringRef("AaB").compare_lower("aAd"));
59 EXPECT_EQ( 0, StringRef("AaB").compare_lower("aab"));
60 EXPECT_EQ( 1, StringRef("AaB").compare_lower("AAA"));
61 EXPECT_EQ(-1, StringRef("AaB").compare_lower("aaBb"));
62 EXPECT_EQ( 1, StringRef("AaB").compare_lower("aA"));
63 EXPECT_EQ( 1, StringRef("\xFF").compare_lower("\1"));
64
65 EXPECT_EQ(-1, StringRef("aab").compare_numeric("aad"));
66 EXPECT_EQ( 0, StringRef("aab").compare_numeric("aab"));
67 EXPECT_EQ( 1, StringRef("aab").compare_numeric("aaa"));
68 EXPECT_EQ(-1, StringRef("aab").compare_numeric("aabb"));
69 EXPECT_EQ( 1, StringRef("aab").compare_numeric("aa"));
70 EXPECT_EQ(-1, StringRef("1").compare_numeric("10"));
71 EXPECT_EQ( 0, StringRef("10").compare_numeric("10"));
72 EXPECT_EQ( 0, StringRef("10a").compare_numeric("10a"));
73 EXPECT_EQ( 1, StringRef("2").compare_numeric("1"));
74 EXPECT_EQ( 0, StringRef("llvm_v1i64_ty").compare_numeric("llvm_v1i64_ty"));
75 EXPECT_EQ( 1, StringRef("\xFF").compare_numeric("\1"));
76 EXPECT_EQ( 1, StringRef("V16").compare_numeric("V1_q0"));
77 EXPECT_EQ(-1, StringRef("V1_q0").compare_numeric("V16"));
78 EXPECT_EQ(-1, StringRef("V8_q0").compare_numeric("V16"));
79 EXPECT_EQ( 1, StringRef("V16").compare_numeric("V8_q0"));
80 EXPECT_EQ(-1, StringRef("V1_q0").compare_numeric("V8_q0"));
81 EXPECT_EQ( 1, StringRef("V8_q0").compare_numeric("V1_q0"));
82 }
83
TEST(StringRefTest,Operators)84 TEST(StringRefTest, Operators) {
85 EXPECT_EQ("", StringRef());
86 EXPECT_TRUE(StringRef("aab") < StringRef("aad"));
87 EXPECT_FALSE(StringRef("aab") < StringRef("aab"));
88 EXPECT_TRUE(StringRef("aab") <= StringRef("aab"));
89 EXPECT_FALSE(StringRef("aab") <= StringRef("aaa"));
90 EXPECT_TRUE(StringRef("aad") > StringRef("aab"));
91 EXPECT_FALSE(StringRef("aab") > StringRef("aab"));
92 EXPECT_TRUE(StringRef("aab") >= StringRef("aab"));
93 EXPECT_FALSE(StringRef("aaa") >= StringRef("aab"));
94 EXPECT_EQ(StringRef("aab"), StringRef("aab"));
95 EXPECT_FALSE(StringRef("aab") == StringRef("aac"));
96 EXPECT_FALSE(StringRef("aab") != StringRef("aab"));
97 EXPECT_TRUE(StringRef("aab") != StringRef("aac"));
98 EXPECT_EQ('a', StringRef("aab")[1]);
99 }
100
TEST(StringRefTest,Substr)101 TEST(StringRefTest, Substr) {
102 StringRef Str("hello");
103 EXPECT_EQ("lo", Str.substr(3));
104 EXPECT_EQ("", Str.substr(100));
105 EXPECT_EQ("hello", Str.substr(0, 100));
106 EXPECT_EQ("o", Str.substr(4, 10));
107 }
108
TEST(StringRefTest,Slice)109 TEST(StringRefTest, Slice) {
110 StringRef Str("hello");
111 EXPECT_EQ("l", Str.slice(2, 3));
112 EXPECT_EQ("ell", Str.slice(1, 4));
113 EXPECT_EQ("llo", Str.slice(2, 100));
114 EXPECT_EQ("", Str.slice(2, 1));
115 EXPECT_EQ("", Str.slice(10, 20));
116 }
117
TEST(StringRefTest,Split)118 TEST(StringRefTest, Split) {
119 StringRef Str("hello");
120 EXPECT_EQ(std::make_pair(StringRef("hello"), StringRef("")),
121 Str.split('X'));
122 EXPECT_EQ(std::make_pair(StringRef("h"), StringRef("llo")),
123 Str.split('e'));
124 EXPECT_EQ(std::make_pair(StringRef(""), StringRef("ello")),
125 Str.split('h'));
126 EXPECT_EQ(std::make_pair(StringRef("he"), StringRef("lo")),
127 Str.split('l'));
128 EXPECT_EQ(std::make_pair(StringRef("hell"), StringRef("")),
129 Str.split('o'));
130
131 EXPECT_EQ(std::make_pair(StringRef("hello"), StringRef("")),
132 Str.rsplit('X'));
133 EXPECT_EQ(std::make_pair(StringRef("h"), StringRef("llo")),
134 Str.rsplit('e'));
135 EXPECT_EQ(std::make_pair(StringRef(""), StringRef("ello")),
136 Str.rsplit('h'));
137 EXPECT_EQ(std::make_pair(StringRef("hel"), StringRef("o")),
138 Str.rsplit('l'));
139 EXPECT_EQ(std::make_pair(StringRef("hell"), StringRef("")),
140 Str.rsplit('o'));
141 }
142
TEST(StringRefTest,Split2)143 TEST(StringRefTest, Split2) {
144 SmallVector<StringRef, 5> parts;
145 SmallVector<StringRef, 5> expected;
146
147 expected.push_back("ab"); expected.push_back("c");
148 StringRef(",ab,,c,").split(parts, ",", -1, false);
149 EXPECT_TRUE(parts == expected);
150
151 expected.clear(); parts.clear();
152 expected.push_back(""); expected.push_back("ab"); expected.push_back("");
153 expected.push_back("c"); expected.push_back("");
154 StringRef(",ab,,c,").split(parts, ",", -1, true);
155 EXPECT_TRUE(parts == expected);
156
157 expected.clear(); parts.clear();
158 expected.push_back("");
159 StringRef("").split(parts, ",", -1, true);
160 EXPECT_TRUE(parts == expected);
161
162 expected.clear(); parts.clear();
163 StringRef("").split(parts, ",", -1, false);
164 EXPECT_TRUE(parts == expected);
165
166 expected.clear(); parts.clear();
167 StringRef(",").split(parts, ",", -1, false);
168 EXPECT_TRUE(parts == expected);
169
170 expected.clear(); parts.clear();
171 expected.push_back(""); expected.push_back("");
172 StringRef(",").split(parts, ",", -1, true);
173 EXPECT_TRUE(parts == expected);
174
175 expected.clear(); parts.clear();
176 expected.push_back("a"); expected.push_back("b");
177 StringRef("a,b").split(parts, ",", -1, true);
178 EXPECT_TRUE(parts == expected);
179
180 // Test MaxSplit
181 expected.clear(); parts.clear();
182 expected.push_back("a,,b,c");
183 StringRef("a,,b,c").split(parts, ",", 0, true);
184 EXPECT_TRUE(parts == expected);
185
186 expected.clear(); parts.clear();
187 expected.push_back("a,,b,c");
188 StringRef("a,,b,c").split(parts, ",", 0, false);
189 EXPECT_TRUE(parts == expected);
190
191 expected.clear(); parts.clear();
192 expected.push_back("a"); expected.push_back(",b,c");
193 StringRef("a,,b,c").split(parts, ",", 1, true);
194 EXPECT_TRUE(parts == expected);
195
196 expected.clear(); parts.clear();
197 expected.push_back("a"); expected.push_back(",b,c");
198 StringRef("a,,b,c").split(parts, ",", 1, false);
199 EXPECT_TRUE(parts == expected);
200
201 expected.clear(); parts.clear();
202 expected.push_back("a"); expected.push_back(""); expected.push_back("b,c");
203 StringRef("a,,b,c").split(parts, ",", 2, true);
204 EXPECT_TRUE(parts == expected);
205
206 expected.clear(); parts.clear();
207 expected.push_back("a"); expected.push_back("b,c");
208 StringRef("a,,b,c").split(parts, ",", 2, false);
209 EXPECT_TRUE(parts == expected);
210
211 expected.clear(); parts.clear();
212 expected.push_back("a"); expected.push_back(""); expected.push_back("b");
213 expected.push_back("c");
214 StringRef("a,,b,c").split(parts, ",", 3, true);
215 EXPECT_TRUE(parts == expected);
216
217 expected.clear(); parts.clear();
218 expected.push_back("a"); expected.push_back("b"); expected.push_back("c");
219 StringRef("a,,b,c").split(parts, ",", 3, false);
220 EXPECT_TRUE(parts == expected);
221 }
222
TEST(StringRefTest,StartsWith)223 TEST(StringRefTest, StartsWith) {
224 StringRef Str("hello");
225 EXPECT_TRUE(Str.startswith("he"));
226 EXPECT_FALSE(Str.startswith("helloworld"));
227 EXPECT_FALSE(Str.startswith("hi"));
228 }
229
TEST(StringRefTest,EndsWith)230 TEST(StringRefTest, EndsWith) {
231 StringRef Str("hello");
232 EXPECT_TRUE(Str.endswith("lo"));
233 EXPECT_FALSE(Str.endswith("helloworld"));
234 EXPECT_FALSE(Str.endswith("worldhello"));
235 EXPECT_FALSE(Str.endswith("so"));
236 }
237
TEST(StringRefTest,Find)238 TEST(StringRefTest, Find) {
239 StringRef Str("hello");
240 EXPECT_EQ(2U, Str.find('l'));
241 EXPECT_EQ(StringRef::npos, Str.find('z'));
242 EXPECT_EQ(StringRef::npos, Str.find("helloworld"));
243 EXPECT_EQ(0U, Str.find("hello"));
244 EXPECT_EQ(1U, Str.find("ello"));
245 EXPECT_EQ(StringRef::npos, Str.find("zz"));
246 EXPECT_EQ(2U, Str.find("ll", 2));
247 EXPECT_EQ(StringRef::npos, Str.find("ll", 3));
248
249 EXPECT_EQ(3U, Str.rfind('l'));
250 EXPECT_EQ(StringRef::npos, Str.rfind('z'));
251 EXPECT_EQ(StringRef::npos, Str.rfind("helloworld"));
252 EXPECT_EQ(0U, Str.rfind("hello"));
253 EXPECT_EQ(1U, Str.rfind("ello"));
254 EXPECT_EQ(StringRef::npos, Str.rfind("zz"));
255
256 EXPECT_EQ(2U, Str.find_first_of('l'));
257 EXPECT_EQ(1U, Str.find_first_of("el"));
258 EXPECT_EQ(StringRef::npos, Str.find_first_of("xyz"));
259
260 EXPECT_EQ(1U, Str.find_first_not_of('h'));
261 EXPECT_EQ(4U, Str.find_first_not_of("hel"));
262 EXPECT_EQ(StringRef::npos, Str.find_first_not_of("hello"));
263 }
264
TEST(StringRefTest,Count)265 TEST(StringRefTest, Count) {
266 StringRef Str("hello");
267 EXPECT_EQ(2U, Str.count('l'));
268 EXPECT_EQ(1U, Str.count('o'));
269 EXPECT_EQ(0U, Str.count('z'));
270 EXPECT_EQ(0U, Str.count("helloworld"));
271 EXPECT_EQ(1U, Str.count("hello"));
272 EXPECT_EQ(1U, Str.count("ello"));
273 EXPECT_EQ(0U, Str.count("zz"));
274 }
275
TEST(StringRefTest,EditDistance)276 TEST(StringRefTest, EditDistance) {
277 StringRef Str("hello");
278 EXPECT_EQ(2U, Str.edit_distance("hill"));
279 }
280
TEST(StringRefTest,Misc)281 TEST(StringRefTest, Misc) {
282 std::string Storage;
283 raw_string_ostream OS(Storage);
284 OS << StringRef("hello");
285 EXPECT_EQ("hello", OS.str());
286 }
287
288 } // end anonymous namespace
289