1 files changed, 18 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/toReversed/immutable.js b/js/src/tests/test262/built-ins/Array/prototype/toReversed/immutable.js
new file mode 100644
index 0000000000..ddc1fe1d48
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/toReversed/immutable.js
@@ -0,0 +1,18 @@
+// 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.toReversed
+description: >
+  Array.prototype.toReversed does not mutate its this value
+features: [change-array-by-copy]
+includes: [compareArray.js]
+---*/
+
+var arr = [0, 1, 2];
+arr.toReversed();
+
+assert.compareArray(arr, [0, 1, 2]);
+assert.notSameValue(arr.toReversed(), arr);
+
+reportCompare(0, 0);