Stryker supports a variety of regular expression mutators, which are listed below. Do you have a suggestion for a (new) mutator? Feel free to create an issue!
Common tokens​
| Original | Mutated |
|---|
[abc] | [^abc] |
[^abc] | [abc] |
\d | \D |
\D | \d |
\w | \W |
\W | \w |
\s | \S |
\S | \s |
Anchors​
| Original | Mutated |
|---|
^abc | abc |
abc$ | abc |
\Aabc | abc |
abc\Z | abc |
abc\z | abc |
abc\b | abc |
abc\B | abc |
\Gabc | abc |
abc* | abc |
abc? | abc |
abc+ | abc |
Quantifiers​
| Original | Mutated |
|---|
abc{5} | abc |
abc{5,} | abc |
abc{5,8} | abc |
abc{5,8} | abc{4,8} |
abc{5,8} | abc{6,8} |
abc{5,8} | abc{5,7} |
abc{5,8} | abc{5,9} |
abc{5,} | abc{4,} |
abc{5,} | abc{6,} |
Group constructs​
| Original | Mutated |
|---|
(?=abc) | (?!abc) |
(?!abc) | (?=abc) |
(?<=abc) | (?<!abc) |
(?<!abc) | (?<=abc) |