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diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/Delete/key-is-not-integer.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/Delete/key-is-not-integer.js
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+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/Delete/key-is-not-integer.js
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+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-integer-indexed-exotic-objects-delete-p
+description: >
+  Return true if key is a CanonicalNumericIndex and IsValidIntegerIndex(O, numericIndex) is false.
+info: |
+  [[Delete]] (P)
+
+  ...
+  Assert: IsPropertyKey(P) is true.
+  Assert: O is an Integer-Indexed exotic object.
+  If Type(P) is String, then
+    Let numericIndex be ! CanonicalNumericIndexString(P).
+    If numericIndex is not undefined, then
+      If IsDetachedBuffer(O.[[ViewedArrayBuffer]]) is true, return true.
+      If ! IsValidIntegerIndex(O, numericIndex) is false, return true.
+      Return false.
+        ...
+
+  IntegerIndexedElementGet ( O, index )
+
+  ...
+  5. If IsInteger(index) is false, return undefined.
+  ...
+includes: [testTypedArray.js]
+features: [align-detached-buffer-semantics-with-web-reality, TypedArray]
+---*/
+
+testWithTypedArrayConstructors(function(TA) {
+  let proto = TypedArray.prototype;
+  Object.defineProperty(proto, "1.1", {
+    configurable: true,
+    get() {
+      throw new Test262Error("OrdinaryGet was called!");
+    }
+  });
+  let sample = new TA(1);
+
+  assert.sameValue(delete sample["1.1"], true, 'The value of `delete sample["1.1"]` is true');
+  assert.sameValue(delete sample[1.1], true, 'The value of `delete sample[1.1]` is true');
+});
+
+reportCompare(0, 0);