42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
// Copyright 2008 The RE2 Authors. All Rights Reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Exhaustive testing of regular expression matching.
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#include "util/test.h"
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#include "re2/testing/exhaustive_tester.h"
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DECLARE_string(regexp_engines);
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namespace re2 {
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// Test simple repetition operators
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TEST(Repetition, Simple) {
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vector<string> ops = Split(" ",
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"%s{0} %s{0,} %s{1} %s{1,} %s{0,1} %s{0,2} "
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"%s{1,2} %s{2} %s{2,} %s{3,4} %s{4,5} "
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"%s* %s+ %s? %s*? %s+? %s??");
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ExhaustiveTest(3, 2, Explode("abc."), ops,
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6, Explode("ab"), "(?:%s)", "");
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ExhaustiveTest(3, 2, Explode("abc."), ops,
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40, Explode("a"), "(?:%s)", "");
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}
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// Test capturing parens -- (a) -- inside repetition operators
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TEST(Repetition, Capturing) {
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vector<string> ops = Split(" ",
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"%s{0} %s{0,} %s{1} %s{1,} %s{0,1} %s{0,2} "
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"%s{1,2} %s{2} %s{2,} %s{3,4} %s{4,5} "
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"%s* %s+ %s? %s*? %s+? %s??");
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ExhaustiveTest(3, 2, Split(" ", "a (a) b"), ops,
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7, Explode("ab"), "(?:%s)", "");
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// This would be a great test, but it runs forever when PCRE is enabled.
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if (strstr("PCRE", FLAGS_regexp_engines.c_str()) == NULL)
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ExhaustiveTest(4, 3, Split(" ", "a (a)"), ops,
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100, Explode("a"), "(?:%s)", "");
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}
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} // namespace re2
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