1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/toSorted/length-tolength.js b/js/src/tests/test262/built-ins/Array/prototype/toSorted/length-tolength.js
new file mode 100644
index 0000000000..4e6344428d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/toSorted/length-tolength.js
@@ -0,0 +1,31 @@
+// Copyright (C) 2021 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-array.prototype.toSorted
+description: >
+  Array.prototype.toSorted converts the this value length to a number.
+info: |
+  Array.prototype.toSorted ( compareFn )
+
+  ...
+  3. Let len be ? LengthOfArrayLike(O).
+  ...
+features: [change-array-by-copy]
+includes: [compareArray.js]
+---*/
+
+assert.compareArray(Array.prototype.toSorted.call({ length: "2", 0: 4, 1: 0, 2: 1 }), [0, 4]);
+
+var arrayLike = {
+  length: {
+    valueOf: () => 2
+  },
+  0: 4,
+  1: 0,
+  2: 1,
+};
+
+assert.compareArray(Array.prototype.toSorted.call(arrayLike), [0, 4]);
+
+reportCompare(0, 0);