1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/vespalib/testkit/test_kit.h>
#include <vespa/vespalib/regex/regex.h>
#include <vespa/vespalib/util/regexp.h>
#include <string>
using namespace vespalib;
TEST("require that prefix detection works") {
EXPECT_EQUAL("", RegexpUtil::get_prefix(""));
EXPECT_EQUAL("", RegexpUtil::get_prefix("foo"));
EXPECT_EQUAL("foo", RegexpUtil::get_prefix("^foo"));
EXPECT_EQUAL("", RegexpUtil::get_prefix("^foo|bar"));
EXPECT_EQUAL("foo", RegexpUtil::get_prefix("^foo$"));
EXPECT_EQUAL("foo", RegexpUtil::get_prefix("^foo[a-z]"));
EXPECT_EQUAL("fo", RegexpUtil::get_prefix("^foo{0,1}"));
EXPECT_EQUAL("foo", RegexpUtil::get_prefix("^foo."));
EXPECT_EQUAL("fo", RegexpUtil::get_prefix("^foo*"));
EXPECT_EQUAL("fo", RegexpUtil::get_prefix("^foo?"));
EXPECT_EQUAL("foo", RegexpUtil::get_prefix("^foo+"));
}
TEST("require that prefix detection sometimes underestimates the prefix size") {
EXPECT_EQUAL("", RegexpUtil::get_prefix("^^foo"));
EXPECT_EQUAL("", RegexpUtil::get_prefix("^foo(bar|baz)"));
EXPECT_EQUAL("fo", RegexpUtil::get_prefix("^foo{1,2}"));
EXPECT_EQUAL("foo", RegexpUtil::get_prefix("^foo\\."));
EXPECT_EQUAL("foo", RegexpUtil::get_prefix("^foo(bar)"));
EXPECT_EQUAL("", RegexpUtil::get_prefix("(^foo)"));
EXPECT_EQUAL("", RegexpUtil::get_prefix("^(foo)"));
EXPECT_EQUAL("foo", RegexpUtil::get_prefix("^foo[a]"));
EXPECT_EQUAL("", RegexpUtil::get_prefix("^foo|^foobar"));
}
const std::string special("^|()[]{}.*?+\\$");
struct ExprFixture {
std::vector<std::string> expressions;
ExprFixture() {
expressions.push_back(special);
for (char c: special) {
expressions.emplace_back(std::string(&c, 1));
}
expressions.emplace_back("abc");
expressions.emplace_back("[:digit:]");
}
};
TEST_F("require that regexp can be made from suffix string", ExprFixture()) {
for (const auto& str: f1.expressions) {
auto re = Regex::from_pattern(std::string(RegexpUtil::make_from_suffix(str)));
ASSERT_TRUE(re.parsed_ok());
EXPECT_TRUE(re.partial_match(str));
EXPECT_FALSE(re.partial_match(str + "foo"));
EXPECT_TRUE(re.partial_match("foo" + str));
EXPECT_FALSE(re.partial_match("foo" + str + "bar"));
}
}
TEST_F("require that regexp can be made from substring string", ExprFixture()) {
for (const auto& str: f1.expressions) {
auto re = Regex::from_pattern(std::string(RegexpUtil::make_from_substring(str)));
ASSERT_TRUE(re.parsed_ok());
EXPECT_TRUE(re.partial_match(str));
EXPECT_TRUE(re.partial_match(str + "foo"));
EXPECT_TRUE(re.partial_match("foo" + str));
EXPECT_TRUE(re.partial_match("foo" + str + "bar"));
}
}
TEST("full_match requires expression to match entire input string") {
std::string pattern = "[Aa][Bb][Cc]";
auto re = Regex::from_pattern(pattern);
ASSERT_TRUE(re.parsed_ok());
EXPECT_TRUE(re.full_match("abc"));
EXPECT_TRUE(re.full_match("ABC"));
EXPECT_FALSE(re.full_match("abcd"));
EXPECT_FALSE(re.full_match("aabc"));
EXPECT_FALSE(re.full_match("aabcc"));
EXPECT_TRUE(Regex::full_match("abc", pattern));
EXPECT_TRUE(Regex::full_match("ABC", pattern));
EXPECT_FALSE(Regex::full_match("abcd", pattern));
EXPECT_FALSE(Regex::full_match("aabc", pattern));
EXPECT_FALSE(Regex::full_match("aabcc", pattern));
}
TEST("partial_match requires expression to match substring of input string") {
std::string pattern = "[Aa][Bb][Cc]";
auto re = Regex::from_pattern(pattern);
ASSERT_TRUE(re.parsed_ok());
EXPECT_TRUE(re.partial_match("abc"));
EXPECT_TRUE(re.partial_match("ABC"));
EXPECT_TRUE(re.partial_match("abcd"));
EXPECT_TRUE(re.partial_match("aabc"));
EXPECT_TRUE(re.partial_match("aabcc"));
EXPECT_FALSE(re.partial_match("abd"));
EXPECT_TRUE(Regex::partial_match("abc", pattern));
EXPECT_TRUE(Regex::partial_match("ABC", pattern));
EXPECT_TRUE(Regex::partial_match("abcd", pattern));
EXPECT_TRUE(Regex::partial_match("aabc", pattern));
EXPECT_TRUE(Regex::partial_match("aabcc", pattern));
EXPECT_FALSE(Regex::partial_match("abd", pattern));
}
TEST("partial_match can be explicitly anchored") {
EXPECT_TRUE(Regex::partial_match("abcc", "^abc"));
EXPECT_FALSE(Regex::partial_match("aabc", "^abc"));
EXPECT_TRUE(Regex::partial_match("aabc", "abc$"));
EXPECT_FALSE(Regex::partial_match("abcc", "abc$"));
EXPECT_TRUE(Regex::partial_match("abc", "^abc$"));
EXPECT_FALSE(Regex::partial_match("aabc", "^abc$"));
EXPECT_FALSE(Regex::partial_match("abcc", "^abc$"));
}
TEST("Regex instance returns parsed_ok() == false upon parse failure") {
auto re = Regex::from_pattern("[a-z"); // Unterminated set
EXPECT_FALSE(re.parsed_ok());
}
TEST("Regex that has failed parsing immediately returns false for matches") {
auto re = Regex::from_pattern("[a-z");
EXPECT_FALSE(re.parsed_ok());
EXPECT_FALSE(re.partial_match("a"));
EXPECT_FALSE(re.full_match("b"));
}
TEST("can create case-insensitive regex matcher") {
auto re = Regex::from_pattern("hello", Regex::Options::IgnoreCase);
ASSERT_TRUE(re.parsed_ok());
EXPECT_TRUE(re.partial_match("HelLo world"));
EXPECT_TRUE(re.full_match("HELLO"));
}
TEST("regex is case sensitive by default") {
auto re = Regex::from_pattern("hello");
ASSERT_TRUE(re.valid());
ASSERT_TRUE(re.parsed_ok());
EXPECT_FALSE(re.partial_match("HelLo world"));
EXPECT_FALSE(re.full_match("HELLO"));
}
TEST("Test that default constructed regex is invalid.") {
Regex dummy;
ASSERT_FALSE(dummy.valid());
}
TEST("Can extract min/max prefix range from anchored regex") {
auto min_max = Regex::from_pattern("^.*").possible_anchored_match_prefix_range();
EXPECT_EQUAL(min_max.first, "");
EXPECT_GREATER_EQUAL(min_max.second, "\xf4\x8f\xbf\xc0"); // Highest possible Unicode char (U+10FFFF) as UTF-8, plus 1
min_max = Regex::from_pattern("^hello").possible_anchored_match_prefix_range();
EXPECT_EQUAL(min_max.first, "hello");
EXPECT_EQUAL(min_max.second, "hello");
min_max = Regex::from_pattern("^hello|^world").possible_anchored_match_prefix_range();
EXPECT_EQUAL(min_max.first, "hello");
EXPECT_EQUAL(min_max.second, "world");
min_max = Regex::from_pattern("(^hello|^world|^zoidberg)").possible_anchored_match_prefix_range();
EXPECT_EQUAL(min_max.first, "hello");
EXPECT_EQUAL(min_max.second, "zoidberg");
min_max = Regex::from_pattern("^hello (foo|bar|zoo)").possible_anchored_match_prefix_range();
EXPECT_EQUAL(min_max.first, "hello bar");
EXPECT_EQUAL(min_max.second, "hello zoo");
min_max = Regex::from_pattern("^(hello|world)+").possible_anchored_match_prefix_range();
EXPECT_EQUAL(min_max.first, "hello");
EXPECT_EQUAL(min_max.second, "worldwp");
// Bad regex; no range
min_max = Regex::from_pattern("*hello").possible_anchored_match_prefix_range();
EXPECT_EQUAL(min_max.first, "");
EXPECT_EQUAL(min_max.second, "");
}
TEST_MAIN() { TEST_RUN_ALL(); }
|
