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 << ")";
29 TEST(StringRefTest, Construction) {
30 EXPECT_EQ("", StringRef());
31 EXPECT_EQ("hello", StringRef("hello"));
32 EXPECT_EQ("hello", StringRef("hello world", 5));
33 EXPECT_EQ("hello", StringRef(std::string("hello")));
36 TEST(StringRefTest, Iteration) {
38 const char *p = "hello";
39 for (const char *it = S.begin(), *ie = S.end(); it != ie; ++it, ++p)
43 TEST(StringRefTest, StringOps) {
44 const char *p = "hello";
45 EXPECT_EQ(p, StringRef(p, 0).data());
46 EXPECT_TRUE(StringRef().empty());
47 EXPECT_EQ((size_t) 5, StringRef("hello").size());
48 EXPECT_EQ(-1, StringRef("aab").compare("aad"));
49 EXPECT_EQ( 0, StringRef("aab").compare("aab"));
50 EXPECT_EQ( 1, StringRef("aab").compare("aaa"));
51 EXPECT_EQ(-1, StringRef("aab").compare("aabb"));
52 EXPECT_EQ( 1, StringRef("aab").compare("aa"));
55 TEST(StringRefTest, Operators) {
56 EXPECT_EQ("", StringRef());
57 EXPECT_TRUE(StringRef("aab") < StringRef("aad"));
58 EXPECT_FALSE(StringRef("aab") < StringRef("aab"));
59 EXPECT_TRUE(StringRef("aab") <= StringRef("aab"));
60 EXPECT_FALSE(StringRef("aab") <= StringRef("aaa"));
61 EXPECT_TRUE(StringRef("aad") > StringRef("aab"));
62 EXPECT_FALSE(StringRef("aab") > StringRef("aab"));
63 EXPECT_TRUE(StringRef("aab") >= StringRef("aab"));
64 EXPECT_FALSE(StringRef("aaa") >= StringRef("aab"));
65 EXPECT_EQ(StringRef("aab"), StringRef("aab"));
66 EXPECT_FALSE(StringRef("aab") == StringRef("aac"));
67 EXPECT_FALSE(StringRef("aab") != StringRef("aab"));
68 EXPECT_TRUE(StringRef("aab") != StringRef("aac"));
69 EXPECT_EQ('a', StringRef("aab")[1]);
72 TEST(StringRefTest, Substr) {
73 StringRef Str("hello");
74 EXPECT_EQ("lo", Str.substr(3));
75 EXPECT_EQ("", Str.substr(100));
76 EXPECT_EQ("hello", Str.substr(0, 100));
77 EXPECT_EQ("o", Str.substr(4, 10));
80 TEST(StringRefTest, Slice) {
81 StringRef Str("hello");
82 EXPECT_EQ("l", Str.slice(2, 3));
83 EXPECT_EQ("ell", Str.slice(1, 4));
84 EXPECT_EQ("llo", Str.slice(2, 100));
85 EXPECT_EQ("", Str.slice(2, 1));
86 EXPECT_EQ("", Str.slice(10, 20));
89 TEST(StringRefTest, Split) {
90 StringRef Str("hello");
91 EXPECT_EQ(std::make_pair(StringRef("hello"), StringRef("")),
93 EXPECT_EQ(std::make_pair(StringRef("h"), StringRef("llo")),
95 EXPECT_EQ(std::make_pair(StringRef(""), StringRef("ello")),
97 EXPECT_EQ(std::make_pair(StringRef("he"), StringRef("lo")),
99 EXPECT_EQ(std::make_pair(StringRef("hell"), StringRef("")),
102 EXPECT_EQ(std::make_pair(StringRef("hello"), StringRef("")),
104 EXPECT_EQ(std::make_pair(StringRef("h"), StringRef("llo")),
106 EXPECT_EQ(std::make_pair(StringRef(""), StringRef("ello")),
108 EXPECT_EQ(std::make_pair(StringRef("hel"), StringRef("o")),
110 EXPECT_EQ(std::make_pair(StringRef("hell"), StringRef("")),
114 // XFAIL for PR5482, StringRef is miscompiled by Apple gcc.
115 #if (!defined(__llvm__) && defined(__APPLE__) && defined(__OPTIMIZE__))
119 TEST(StringRefTest, Split2) {
120 SmallVector<StringRef, 5> parts;
121 SmallVector<StringRef, 5> expected;
123 expected.push_back("ab"); expected.push_back("c");
124 StringRef(",ab,,c,").split(parts, ",", -1, false);
125 EXPECT_TRUE(parts == expected);
127 expected.clear(); parts.clear();
128 expected.push_back(""); expected.push_back("ab"); expected.push_back("");
129 expected.push_back("c"); expected.push_back("");
130 StringRef(",ab,,c,").split(parts, ",", -1, true);
131 EXPECT_TRUE(parts == expected);
133 expected.clear(); parts.clear();
134 expected.push_back("");
135 StringRef("").split(parts, ",", -1, true);
136 EXPECT_TRUE(parts == expected);
138 expected.clear(); parts.clear();
139 StringRef("").split(parts, ",", -1, false);
140 EXPECT_TRUE(parts == expected);
142 expected.clear(); parts.clear();
143 StringRef(",").split(parts, ",", -1, false);
144 EXPECT_TRUE(parts == expected);
146 expected.clear(); parts.clear();
147 expected.push_back(""); expected.push_back("");
148 StringRef(",").split(parts, ",", -1, true);
149 EXPECT_TRUE(parts == expected);
151 expected.clear(); parts.clear();
152 expected.push_back("a"); expected.push_back("b");
153 StringRef("a,b").split(parts, ",", -1, true);
154 EXPECT_TRUE(parts == expected);
157 expected.clear(); parts.clear();
158 expected.push_back("a,,b,c");
159 StringRef("a,,b,c").split(parts, ",", 0, true);
160 EXPECT_TRUE(parts == expected);
162 expected.clear(); parts.clear();
163 expected.push_back("a,,b,c");
164 StringRef("a,,b,c").split(parts, ",", 0, false);
165 EXPECT_TRUE(parts == expected);
167 expected.clear(); parts.clear();
168 expected.push_back("a"); expected.push_back(",b,c");
169 StringRef("a,,b,c").split(parts, ",", 1, true);
170 EXPECT_TRUE(parts == expected);
172 expected.clear(); parts.clear();
173 expected.push_back("a"); expected.push_back(",b,c");
174 StringRef("a,,b,c").split(parts, ",", 1, false);
175 EXPECT_TRUE(parts == expected);
177 expected.clear(); parts.clear();
178 expected.push_back("a"); expected.push_back(""); expected.push_back("b,c");
179 StringRef("a,,b,c").split(parts, ",", 2, true);
180 EXPECT_TRUE(parts == expected);
182 expected.clear(); parts.clear();
183 expected.push_back("a"); expected.push_back("b,c");
184 StringRef("a,,b,c").split(parts, ",", 2, false);
185 EXPECT_TRUE(parts == expected);
187 expected.clear(); parts.clear();
188 expected.push_back("a"); expected.push_back(""); expected.push_back("b");
189 expected.push_back("c");
190 StringRef("a,,b,c").split(parts, ",", 3, true);
191 EXPECT_TRUE(parts == expected);
193 expected.clear(); parts.clear();
194 expected.push_back("a"); expected.push_back("b"); expected.push_back("c");
195 StringRef("a,,b,c").split(parts, ",", 3, false);
196 EXPECT_TRUE(parts == expected);
200 TEST(StringRefTest, StartsWith) {
201 StringRef Str("hello");
202 EXPECT_TRUE(Str.startswith("he"));
203 EXPECT_FALSE(Str.startswith("helloworld"));
204 EXPECT_FALSE(Str.startswith("hi"));
207 TEST(StringRefTest, Find) {
208 StringRef Str("hello");
209 EXPECT_EQ(2U, Str.find('l'));
210 EXPECT_EQ(StringRef::npos, Str.find('z'));
211 EXPECT_EQ(StringRef::npos, Str.find("helloworld"));
212 EXPECT_EQ(0U, Str.find("hello"));
213 EXPECT_EQ(1U, Str.find("ello"));
214 EXPECT_EQ(StringRef::npos, Str.find("zz"));
215 EXPECT_EQ(2U, Str.find("ll", 2));
216 EXPECT_EQ(StringRef::npos, Str.find("ll", 3));
218 EXPECT_EQ(3U, Str.rfind('l'));
219 EXPECT_EQ(StringRef::npos, Str.rfind('z'));
220 EXPECT_EQ(StringRef::npos, Str.rfind("helloworld"));
221 EXPECT_EQ(0U, Str.rfind("hello"));
222 EXPECT_EQ(1U, Str.rfind("ello"));
223 EXPECT_EQ(StringRef::npos, Str.rfind("zz"));
225 EXPECT_EQ(2U, Str.find_first_of('l'));
226 EXPECT_EQ(1U, Str.find_first_of("el"));
227 EXPECT_EQ(StringRef::npos, Str.find_first_of("xyz"));
229 EXPECT_EQ(1U, Str.find_first_not_of('h'));
230 EXPECT_EQ(4U, Str.find_first_not_of("hel"));
231 EXPECT_EQ(StringRef::npos, Str.find_first_not_of("hello"));
234 TEST(StringRefTest, Count) {
235 StringRef Str("hello");
236 EXPECT_EQ(2U, Str.count('l'));
237 EXPECT_EQ(1U, Str.count('o'));
238 EXPECT_EQ(0U, Str.count('z'));
239 EXPECT_EQ(0U, Str.count("helloworld"));
240 EXPECT_EQ(1U, Str.count("hello"));
241 EXPECT_EQ(1U, Str.count("ello"));
242 EXPECT_EQ(0U, Str.count("zz"));
245 TEST(StringRefTest, Misc) {
247 raw_string_ostream OS(Storage);
248 OS << StringRef("hello");
249 EXPECT_EQ("hello", OS.str());
252 } // end anonymous namespace