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/SmallVector.h"
13 #include "llvm/Support/raw_ostream.h"
18 std::ostream &operator<<(std::ostream &OS, const StringRef &S) {
23 std::ostream &operator<<(std::ostream &OS,
24 const std::pair<StringRef, StringRef> &P) {
25 OS << "(" << P.first << ", " << P.second << ")";
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")));
39 TEST(StringRefTest, Iteration) {
41 const char *p = "hello";
42 for (const char *it = S.begin(), *ie = S.end(); it != ie; ++it, ++p)
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"));
58 TEST(StringRefTest, Operators) {
59 EXPECT_EQ("", StringRef());
60 EXPECT_TRUE(StringRef("aab") < StringRef("aad"));
61 EXPECT_FALSE(StringRef("aab") < StringRef("aab"));
62 EXPECT_TRUE(StringRef("aab") <= StringRef("aab"));
63 EXPECT_FALSE(StringRef("aab") <= StringRef("aaa"));
64 EXPECT_TRUE(StringRef("aad") > StringRef("aab"));
65 EXPECT_FALSE(StringRef("aab") > StringRef("aab"));
66 EXPECT_TRUE(StringRef("aab") >= StringRef("aab"));
67 EXPECT_FALSE(StringRef("aaa") >= StringRef("aab"));
68 EXPECT_EQ(StringRef("aab"), StringRef("aab"));
69 EXPECT_FALSE(StringRef("aab") == StringRef("aac"));
70 EXPECT_FALSE(StringRef("aab") != StringRef("aab"));
71 EXPECT_TRUE(StringRef("aab") != StringRef("aac"));
72 EXPECT_EQ('a', StringRef("aab")[1]);
75 TEST(StringRefTest, Substr) {
76 StringRef Str("hello");
77 EXPECT_EQ("lo", Str.substr(3));
78 EXPECT_EQ("", Str.substr(100));
79 EXPECT_EQ("hello", Str.substr(0, 100));
80 EXPECT_EQ("o", Str.substr(4, 10));
83 TEST(StringRefTest, Slice) {
84 StringRef Str("hello");
85 EXPECT_EQ("l", Str.slice(2, 3));
86 EXPECT_EQ("ell", Str.slice(1, 4));
87 EXPECT_EQ("llo", Str.slice(2, 100));
88 EXPECT_EQ("", Str.slice(2, 1));
89 EXPECT_EQ("", Str.slice(10, 20));
92 TEST(StringRefTest, Split) {
93 StringRef Str("hello");
94 EXPECT_EQ(std::make_pair(StringRef("hello"), StringRef("")),
96 EXPECT_EQ(std::make_pair(StringRef("h"), StringRef("llo")),
98 EXPECT_EQ(std::make_pair(StringRef(""), StringRef("ello")),
100 EXPECT_EQ(std::make_pair(StringRef("he"), StringRef("lo")),
102 EXPECT_EQ(std::make_pair(StringRef("hell"), StringRef("")),
105 EXPECT_EQ(std::make_pair(StringRef("hello"), StringRef("")),
107 EXPECT_EQ(std::make_pair(StringRef("h"), StringRef("llo")),
109 EXPECT_EQ(std::make_pair(StringRef(""), StringRef("ello")),
111 EXPECT_EQ(std::make_pair(StringRef("hel"), StringRef("o")),
113 EXPECT_EQ(std::make_pair(StringRef("hell"), StringRef("")),
117 TEST(StringRefTest, Split2) {
118 SmallVector<StringRef, 5> parts;
119 SmallVector<StringRef, 5> expected;
121 expected.push_back("ab"); expected.push_back("c");
122 StringRef(",ab,,c,").split(parts, ",", -1, false);
123 EXPECT_TRUE(parts == expected);
125 expected.clear(); parts.clear();
126 expected.push_back(""); expected.push_back("ab"); expected.push_back("");
127 expected.push_back("c"); expected.push_back("");
128 StringRef(",ab,,c,").split(parts, ",", -1, true);
129 EXPECT_TRUE(parts == expected);
131 expected.clear(); parts.clear();
132 expected.push_back("");
133 StringRef("").split(parts, ",", -1, true);
134 EXPECT_TRUE(parts == expected);
136 expected.clear(); parts.clear();
137 StringRef("").split(parts, ",", -1, false);
138 EXPECT_TRUE(parts == expected);
140 expected.clear(); parts.clear();
141 StringRef(",").split(parts, ",", -1, false);
142 EXPECT_TRUE(parts == expected);
144 expected.clear(); parts.clear();
145 expected.push_back(""); expected.push_back("");
146 StringRef(",").split(parts, ",", -1, true);
147 EXPECT_TRUE(parts == expected);
149 expected.clear(); parts.clear();
150 expected.push_back("a"); expected.push_back("b");
151 StringRef("a,b").split(parts, ",", -1, true);
152 EXPECT_TRUE(parts == expected);
155 expected.clear(); parts.clear();
156 expected.push_back("a,,b,c");
157 StringRef("a,,b,c").split(parts, ",", 0, true);
158 EXPECT_TRUE(parts == expected);
160 expected.clear(); parts.clear();
161 expected.push_back("a,,b,c");
162 StringRef("a,,b,c").split(parts, ",", 0, false);
163 EXPECT_TRUE(parts == expected);
165 expected.clear(); parts.clear();
166 expected.push_back("a"); expected.push_back(",b,c");
167 StringRef("a,,b,c").split(parts, ",", 1, true);
168 EXPECT_TRUE(parts == expected);
170 expected.clear(); parts.clear();
171 expected.push_back("a"); expected.push_back(",b,c");
172 StringRef("a,,b,c").split(parts, ",", 1, false);
173 EXPECT_TRUE(parts == expected);
175 expected.clear(); parts.clear();
176 expected.push_back("a"); expected.push_back(""); expected.push_back("b,c");
177 StringRef("a,,b,c").split(parts, ",", 2, true);
178 EXPECT_TRUE(parts == expected);
180 expected.clear(); parts.clear();
181 expected.push_back("a"); expected.push_back("b,c");
182 StringRef("a,,b,c").split(parts, ",", 2, false);
183 EXPECT_TRUE(parts == expected);
185 expected.clear(); parts.clear();
186 expected.push_back("a"); expected.push_back(""); expected.push_back("b");
187 expected.push_back("c");
188 StringRef("a,,b,c").split(parts, ",", 3, true);
189 EXPECT_TRUE(parts == expected);
191 expected.clear(); parts.clear();
192 expected.push_back("a"); expected.push_back("b"); expected.push_back("c");
193 StringRef("a,,b,c").split(parts, ",", 3, false);
194 EXPECT_TRUE(parts == expected);
197 TEST(StringRefTest, StartsWith) {
198 StringRef Str("hello");
199 EXPECT_TRUE(Str.startswith("he"));
200 EXPECT_FALSE(Str.startswith("helloworld"));
201 EXPECT_FALSE(Str.startswith("hi"));
204 TEST(StringRefTest, EndsWith) {
205 StringRef Str("hello");
206 EXPECT_TRUE(Str.endswith("lo"));
207 EXPECT_FALSE(Str.endswith("helloworld"));
208 EXPECT_FALSE(Str.endswith("worldhello"));
209 EXPECT_FALSE(Str.endswith("so"));
212 TEST(StringRefTest, Find) {
213 StringRef Str("hello");
214 EXPECT_EQ(2U, Str.find('l'));
215 EXPECT_EQ(StringRef::npos, Str.find('z'));
216 EXPECT_EQ(StringRef::npos, Str.find("helloworld"));
217 EXPECT_EQ(0U, Str.find("hello"));
218 EXPECT_EQ(1U, Str.find("ello"));
219 EXPECT_EQ(StringRef::npos, Str.find("zz"));
220 EXPECT_EQ(2U, Str.find("ll", 2));
221 EXPECT_EQ(StringRef::npos, Str.find("ll", 3));
223 EXPECT_EQ(3U, Str.rfind('l'));
224 EXPECT_EQ(StringRef::npos, Str.rfind('z'));
225 EXPECT_EQ(StringRef::npos, Str.rfind("helloworld"));
226 EXPECT_EQ(0U, Str.rfind("hello"));
227 EXPECT_EQ(1U, Str.rfind("ello"));
228 EXPECT_EQ(StringRef::npos, Str.rfind("zz"));
230 EXPECT_EQ(2U, Str.find_first_of('l'));
231 EXPECT_EQ(1U, Str.find_first_of("el"));
232 EXPECT_EQ(StringRef::npos, Str.find_first_of("xyz"));
234 EXPECT_EQ(1U, Str.find_first_not_of('h'));
235 EXPECT_EQ(4U, Str.find_first_not_of("hel"));
236 EXPECT_EQ(StringRef::npos, Str.find_first_not_of("hello"));
239 TEST(StringRefTest, Count) {
240 StringRef Str("hello");
241 EXPECT_EQ(2U, Str.count('l'));
242 EXPECT_EQ(1U, Str.count('o'));
243 EXPECT_EQ(0U, Str.count('z'));
244 EXPECT_EQ(0U, Str.count("helloworld"));
245 EXPECT_EQ(1U, Str.count("hello"));
246 EXPECT_EQ(1U, Str.count("ello"));
247 EXPECT_EQ(0U, Str.count("zz"));
250 TEST(StringRefTest, Misc) {
252 raw_string_ostream OS(Storage);
253 OS << StringRef("hello");
254 EXPECT_EQ("hello", OS.str());
257 } // end anonymous namespace