Escaped Mutant for Mutator "MBString": --- Original +++ New @@ @@ private Closure $upper; public function __construct() { - $this->upper = static fn(string $word): string => mb_convert_case($word, MB_CASE_UPPER, 'UTF-8'); + $this->upper = static fn(string $word): string => strtoupper($word); $this->lower = static fn(string $word): string => mb_convert_case($word, MB_CASE_LOWER, 'UTF-8'); $this->title = static fn(string $word): string => mb_convert_case($word, MB_CASE_TITLE, 'UTF-8'); }

Escaped Mutant for Mutator "MBString": --- Original +++ New @@ @@ public function __construct() { $this->upper = static fn(string $word): string => mb_convert_case($word, MB_CASE_UPPER, 'UTF-8'); - $this->lower = static fn(string $word): string => mb_convert_case($word, MB_CASE_LOWER, 'UTF-8'); + $this->lower = static fn(string $word): string => strtolower($word); $this->title = static fn(string $word): string => mb_convert_case($word, MB_CASE_TITLE, 'UTF-8'); } public function adaCase(string $string) : string

Escaped Mutant for Mutator "PregMatchRemoveCaret": --- Original +++ New @@ @@ } private function isUppercaseWord(string $string) : bool { - return preg_match('#^\\p{Lu}+$#u', $string) === 1; + return preg_match('#\\p{Lu}+$#u', $string) === 1; } /** * @return list<string>

Escaped Mutant for Mutator "PregMatchRemoveFlags": --- Original +++ New @@ @@ } private function isUppercaseWord(string $string) : bool { - return preg_match('#^\\p{Lu}+$#u', $string) === 1; + return preg_match('#^\\p{Lu}+$#', $string) === 1; } /** * @return list<string>

Escaped Mutant for Mutator "IncrementInteger": --- Original +++ New @@ @@ } private function isUppercaseWord(string $string) : bool { - return preg_match('#^\\p{Lu}+$#u', $string) === 1; + return preg_match('#^\\p{Lu}+$#u', $string) === 2; } /** * @return list<string>

Escaped Mutant for Mutator "FalseValue": --- Original +++ New @@ @@ * @var non-empty-string $string */ $words = preg_split($pattern, $string, 0, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY); - if ($words === false) { + if ($words === true) { throw new FailedToSplitStringException($string . ' | ' . $pattern); } /** @return list<string> */