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/Support/raw_ostream.h"
17 std::ostream &operator<<(std::ostream &OS, const StringRef &S) {
22 std::ostream &operator<<(std::ostream &OS,
23 const std::pair<StringRef, StringRef> &P) {
24 OS << "(" << P.first << ", " << P.second << ")";
28 TEST(StringRefTest, Construction) {
29 EXPECT_EQ("", StringRef());
30 EXPECT_EQ("hello", StringRef("hello"));
31 EXPECT_EQ("hello", StringRef("hello world", 5));
32 EXPECT_EQ("hello", StringRef(std::string("hello")));
35 TEST(StringRefTest, Iteration) {
37 const char *p = "hello";
38 for (const char *it = S.begin(), *ie = S.end(); it != ie; ++it, ++p)
42 TEST(StringRefTest, StringOps) {
43 const char *p = "hello";
44 EXPECT_EQ(p, StringRef(p, 0).data());
45 EXPECT_TRUE(StringRef().empty());
46 EXPECT_EQ((size_t) 5, StringRef("hello").size());
47 EXPECT_EQ(-1, StringRef("aab").compare("aad"));
48 EXPECT_EQ( 0, StringRef("aab").compare("aab"));
49 EXPECT_EQ( 1, StringRef("aab").compare("aaa"));
50 EXPECT_EQ(-1, StringRef("aab").compare("aabb"));
51 EXPECT_EQ( 1, StringRef("aab").compare("aa"));
54 TEST(StringRefTest, Operators) {
55 EXPECT_EQ("", StringRef());
56 EXPECT_TRUE(StringRef("aab") < StringRef("aad"));
57 EXPECT_FALSE(StringRef("aab") < StringRef("aab"));
58 EXPECT_TRUE(StringRef("aab") <= StringRef("aab"));
59 EXPECT_FALSE(StringRef("aab") <= StringRef("aaa"));
60 EXPECT_TRUE(StringRef("aad") > StringRef("aab"));
61 EXPECT_FALSE(StringRef("aab") > StringRef("aab"));
62 EXPECT_TRUE(StringRef("aab") >= StringRef("aab"));
63 EXPECT_FALSE(StringRef("aaa") >= StringRef("aab"));
64 EXPECT_EQ(StringRef("aab"), StringRef("aab"));
65 EXPECT_FALSE(StringRef("aab") == StringRef("aac"));
66 EXPECT_FALSE(StringRef("aab") != StringRef("aab"));
67 EXPECT_TRUE(StringRef("aab") != StringRef("aac"));
68 EXPECT_EQ('a', StringRef("aab")[1]);
71 TEST(StringRefTest, Substr) {
72 StringRef Str("hello");
73 EXPECT_EQ("lo", Str.substr(3));
74 EXPECT_EQ("", Str.substr(100));
75 EXPECT_EQ("hello", Str.substr(0, 100));
76 EXPECT_EQ("o", Str.substr(4, 10));
79 TEST(StringRefTest, Slice) {
80 StringRef Str("hello");
81 EXPECT_EQ("l", Str.slice(2, 3));
82 EXPECT_EQ("ell", Str.slice(1, 4));
83 EXPECT_EQ("llo", Str.slice(2, 100));
84 EXPECT_EQ("", Str.slice(2, 1));
85 EXPECT_EQ("", Str.slice(10, 20));
88 TEST(StringRefTest, Split) {
89 StringRef Str("hello");
90 EXPECT_EQ(std::make_pair(StringRef("hello"), StringRef("")),
92 EXPECT_EQ(std::make_pair(StringRef("h"), StringRef("llo")),
94 EXPECT_EQ(std::make_pair(StringRef(""), StringRef("ello")),
96 EXPECT_EQ(std::make_pair(StringRef("he"), StringRef("lo")),
98 EXPECT_EQ(std::make_pair(StringRef("hell"), StringRef("")),
101 EXPECT_EQ(std::make_pair(StringRef("hello"), StringRef("")),
103 EXPECT_EQ(std::make_pair(StringRef("h"), StringRef("llo")),
105 EXPECT_EQ(std::make_pair(StringRef(""), StringRef("ello")),
107 EXPECT_EQ(std::make_pair(StringRef("hel"), StringRef("o")),
109 EXPECT_EQ(std::make_pair(StringRef("hell"), StringRef("")),
113 TEST(StringRefTest, Split2) {
114 std::vector<StringRef> parts;
115 std::vector<StringRef> expected;
117 expected.push_back("ab"); expected.push_back("c");
118 StringRef(",ab,,c,").split(parts, ",", -1, false);
119 EXPECT_TRUE(parts == expected);
121 expected.clear(); parts.clear();
122 expected.push_back(""); expected.push_back("ab"); expected.push_back("");
123 expected.push_back("c"); expected.push_back("");
124 StringRef(",ab,,c,").split(parts, ",", -1, true);
125 EXPECT_TRUE(parts == expected);
127 expected.clear(); parts.clear();
128 expected.push_back("");
129 StringRef("").split(parts, ",", -1, true);
130 EXPECT_TRUE(parts == expected);
132 expected.clear(); parts.clear();
133 StringRef("").split(parts, ",", -1, false);
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 expected.push_back(""); expected.push_back("");
142 StringRef(",").split(parts, ",", -1, true);
143 EXPECT_TRUE(parts == expected);
146 expected.clear(); parts.clear();
147 expected.push_back("a,,b,c");
148 StringRef("a,,b,c").split(parts, ",", 0, true);
149 EXPECT_TRUE(parts == expected);
151 expected.clear(); parts.clear();
152 expected.push_back("a,,b,c");
153 StringRef("a,,b,c").split(parts, ",", 0, false);
154 EXPECT_TRUE(parts == expected);
156 expected.clear(); parts.clear();
157 expected.push_back("a"); expected.push_back(",b,c");
158 StringRef("a,,b,c").split(parts, ",", 1, true);
159 EXPECT_TRUE(parts == expected);
161 expected.clear(); parts.clear();
162 expected.push_back("a"); expected.push_back(",b,c");
163 StringRef("a,,b,c").split(parts, ",", 1, false);
164 EXPECT_TRUE(parts == expected);
166 expected.clear(); parts.clear();
167 expected.push_back("a"); expected.push_back(""); expected.push_back("b,c");
168 StringRef("a,,b,c").split(parts, ",", 2, true);
169 EXPECT_TRUE(parts == expected);
171 expected.clear(); parts.clear();
172 expected.push_back("a"); expected.push_back("b,c");
173 StringRef("a,,b,c").split(parts, ",", 2, false);
174 EXPECT_TRUE(parts == expected);
176 expected.clear(); parts.clear();
177 expected.push_back("a"); expected.push_back(""); expected.push_back("b");
178 expected.push_back("c");
179 StringRef("a,,b,c").split(parts, ",", 3, true);
180 EXPECT_TRUE(parts == expected);
182 expected.clear(); parts.clear();
183 expected.push_back("a"); expected.push_back("b"); expected.push_back("c");
184 StringRef("a,,b,c").split(parts, ",", 3, false);
185 EXPECT_TRUE(parts == expected);
188 TEST(StringRefTest, StartsWith) {
189 StringRef Str("hello");
190 EXPECT_TRUE(Str.startswith("he"));
191 EXPECT_FALSE(Str.startswith("helloworld"));
192 EXPECT_FALSE(Str.startswith("hi"));
195 TEST(StringRefTest, Find) {
196 StringRef Str("hello");
197 EXPECT_EQ(2U, Str.find('l'));
198 EXPECT_EQ(StringRef::npos, Str.find('z'));
199 EXPECT_EQ(StringRef::npos, Str.find("helloworld"));
200 EXPECT_EQ(0U, Str.find("hello"));
201 EXPECT_EQ(1U, Str.find("ello"));
202 EXPECT_EQ(StringRef::npos, Str.find("zz"));
203 EXPECT_EQ(2U, Str.find("ll", 2));
204 EXPECT_EQ(StringRef::npos, Str.find("ll", 3));
206 EXPECT_EQ(3U, Str.rfind('l'));
207 EXPECT_EQ(StringRef::npos, Str.rfind('z'));
208 EXPECT_EQ(StringRef::npos, Str.rfind("helloworld"));
209 EXPECT_EQ(0U, Str.rfind("hello"));
210 EXPECT_EQ(1U, Str.rfind("ello"));
211 EXPECT_EQ(StringRef::npos, Str.rfind("zz"));
213 EXPECT_EQ(2U, Str.find_first_of('l'));
214 EXPECT_EQ(1U, Str.find_first_of("el"));
215 EXPECT_EQ(StringRef::npos, Str.find_first_of("xyz"));
217 EXPECT_EQ(1U, Str.find_first_not_of('h'));
218 EXPECT_EQ(4U, Str.find_first_not_of("hel"));
219 EXPECT_EQ(StringRef::npos, Str.find_first_not_of("hello"));
222 TEST(StringRefTest, Count) {
223 StringRef Str("hello");
224 EXPECT_EQ(2U, Str.count('l'));
225 EXPECT_EQ(1U, Str.count('o'));
226 EXPECT_EQ(0U, Str.count('z'));
227 EXPECT_EQ(0U, Str.count("helloworld"));
228 EXPECT_EQ(1U, Str.count("hello"));
229 EXPECT_EQ(1U, Str.count("ello"));
230 EXPECT_EQ(0U, Str.count("zz"));
233 TEST(StringRefTest, Misc) {
235 raw_string_ostream OS(Storage);
236 OS << StringRef("hello");
237 EXPECT_EQ("hello", OS.str());
240 } // end anonymous namespace