Make sure pattern is not an empty string

imbo · Sep 9, 2023 · 2593749 · 2593749
1 parent c2f6f36
commit 2593749
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/ArrayContainsComparator/Matcher/RegExp.php b/src/ArrayContainsComparator/Matcher/RegExp.php
@@ -19,6 +19,10 @@ public function __invoke(string|int|float $subject, string $pattern): bool
     {
         $subject = (string) $subject;
 
+        if ('' === $pattern) {
+            throw new InvalidArgumentException('Pattern can not be empty.');
+        }
+
         if (!preg_match($pattern, $subject)) {
             throw new InvalidArgumentException(sprintf(
                 'Subject "%s" did not match pattern "%s".',