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Add basic unit tests for RE_Matcher

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Tim Wojtulewicz 2022-07-25 12:54:12 -07:00
parent 36e31e28ac
commit abf2da781d
1 changed files with 70 additions and 0 deletions
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70
src/RE.cc
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@ -7,6 +7,7 @@
#include <cstdlib>
#include <utility>
#include "zeek/3rdparty/doctest.h"
#include "zeek/CCL.h"
#include "zeek/DFA.h"
#include "zeek/EquivClass.h"
@ -488,4 +489,73 @@ bool RE_Matcher::Compile(bool lazy)
return re_anywhere->Compile(lazy) && re_exact->Compile(lazy);
}
TEST_SUITE("re_matcher")
{
TEST_CASE("simple_pattern")
{
RE_Matcher match("[0-9]+");
match.Compile();
CHECK(strcmp(match.OrigText(), "[0-9]+") == 0);
CHECK(strcmp(match.PatternText(), "^?([0-9]+)$?") == 0);
CHECK(strcmp(match.AnywherePatternText(), "^?(.|\\n)*([0-9]+)") == 0);
CHECK(match.MatchExactly("12345"));
CHECK_FALSE(match.MatchExactly("a12345"));
// The documentation for MatchAnywhere says that it returns the
// "index just beyond where the first match occurs", which I would
// think means *after* the match. This is returning the position
// where the match starts though.
CHECK(match.MatchAnywhere("a1234bcd") == 2);
CHECK(match.MatchAnywhere("abcd") == 0);
}
TEST_CASE("case_insensitive_mode")
{
RE_Matcher match("[a-z]+");
match.MakeCaseInsensitive();
match.Compile();
CHECK(strcmp(match.PatternText(), "(?i:^?([a-z]+)$?)") == 0);
CHECK(match.MatchExactly("abcDEF"));
}
TEST_CASE("multi_pattern")
{
RE_Matcher match("[0-9]+");
match.AddPat("[a-z]+");
match.Compile();
CHECK(strcmp(match.PatternText(), "(^?([0-9]+)$?)|(^?([a-z]+)$?)") == 0);
CHECK(match.MatchExactly("abc"));
CHECK(match.MatchExactly("123"));
CHECK_FALSE(match.MatchExactly("abc123"));
}
TEST_CASE("modes_multi_pattern")
{
RE_Matcher match("[a-m]+");
match.MakeCaseInsensitive();
match.AddPat("[n-z]+");
match.Compile();
CHECK(strcmp(match.PatternText(), "((?i:^?([a-m]+)$?))|(^?([n-z]+)$?)") == 0);
CHECK(match.MatchExactly("aBc"));
CHECK(match.MatchExactly("nop"));
CHECK_FALSE(match.MatchExactly("NoP"));
// TODO: this part isn't working at all. There's something about the second call
// to Compile() that's breaking something.
// match.MakeCaseInsensitive();
// match.Compile();
// CHECK(strcmp(match.PatternText(), "(?i:((?i:^?([a-m]+)$?))|(^?([n-z]+)$?))") == 0);
// CHECK(match.MatchExactly("aBc"));
// CHECK(match.MatchExactly("nop"));
// CHECK(match.MatchExactly("NoP"));
}
}
} // namespace zeek