add non-matching example

tc39 · Aug 9, 2022 · 418419a · 418419a
1 parent 52284ba
commit 418419a
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/test/built-ins/RegExp/named-groups/duplicate-names.js b/test/built-ins/RegExp/named-groups/duplicate-names.js
@@ -17,3 +17,6 @@ assert.compareArray(["bb", undefined, "bb"], "bb".match(/(?:(?<x>a)|(?<x>b))\k<x
 let matchResult = "aabb".match(/(?:(?:(?<x>a)|(?<x>b))\k<x>){2}/);
 assert.compareArray(["aabb", undefined, "bb"], matchResult);
 assert.sameValue(matchResult.groups.x, "bb");
+
+let notMatched = "abab".match(/(?:(?:(?<x>a)|(?<x>b))\k<x>){2}/);
+assert.sameValue(null, notMatched);