1 // Copyright 2008 The RE2 Authors. All Rights Reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
4
5 // Exhaustive testing of regular expression matching.
6
7 #include <string>
8 #include <vector>
9
10 #include "util/test.h"
11 #include "re2/testing/exhaustive_tester.h"
12
13 namespace re2 {
14
15 // Test simple repetition operators
TEST(Repetition,Simple)16 TEST(Repetition, Simple) {
17 std::vector<std::string> ops = Split(" ",
18 "%s{0} %s{0,} %s{1} %s{1,} %s{0,1} %s{0,2} "
19 "%s{1,2} %s{2} %s{2,} %s{3,4} %s{4,5} "
20 "%s* %s+ %s? %s*? %s+? %s??");
21 ExhaustiveTest(3, 2, Explode("abc."), ops,
22 6, Explode("ab"), "(?:%s)", "");
23 ExhaustiveTest(3, 2, Explode("abc."), ops,
24 40, Explode("a"), "(?:%s)", "");
25 }
26
27 // Test capturing parens -- (a) -- inside repetition operators
TEST(Repetition,Capturing)28 TEST(Repetition, Capturing) {
29 std::vector<std::string> ops = Split(" ",
30 "%s{0} %s{0,} %s{1} %s{1,} %s{0,1} %s{0,2} "
31 "%s{1,2} %s{2} %s{2,} %s{3,4} %s{4,5} "
32 "%s* %s+ %s? %s*? %s+? %s??");
33 ExhaustiveTest(3, 2, Split(" ", "a (a) b"), ops,
34 7, Explode("ab"), "(?:%s)", "");
35 ExhaustiveTest(3, 2, Split(" ", "a (a)"), ops,
36 50, Explode("a"), "(?:%s)", "");
37 }
38
39 } // namespace re2
40