1 files changed, 22 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/with/immutable.js b/js/src/tests/test262/built-ins/TypedArray/prototype/with/immutable.js
new file mode 100644
index 0000000000..97746a08f0
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/with/immutable.js
@@ -0,0 +1,22 @@
+// |reftest| shell-option(--enable-change-array-by-copy) skip-if(!Array.prototype.with||!xulRuntime.shell) -- change-array-by-copy is not enabled unconditionally, requires shell-options
+// Copyright (C) 2021 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-%typedarray%.prototype.with
+description: >
+  %TypedArray%.prototype.with does not mutate its this value
+includes: [testTypedArray.js, compareArray.js]
+features: [TypedArray, change-array-by-copy]
+---*/
+
+testWithTypedArrayConstructors(TA => {
+  var ta = new TA([3, 1, 2]);
+  ta.with(0, 2);
+
+  assert.compareArray(ta, [3, 1, 2]);
+  assert.notSameValue(ta.with(0, 2), ta);
+  assert.notSameValue(ta.with(0, 3), ta);
+});
+
+reportCompare(0, 0);