1 files changed, 36 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/Delete/detached-buffer-key-is-not-numeric-index.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/Delete/detached-buffer-key-is-not-numeric-index.js
new file mode 100644
index 0000000000..f204b58813
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/Delete/detached-buffer-key-is-not-numeric-index.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: >
+  Returns true when deleting any property if buffer is detached.
+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.
+    ...
+  Return ? OrdinaryDelete(O, P)
+includes: [testTypedArray.js, detachArrayBuffer.js]
+features: [align-detached-buffer-semantics-with-web-reality, TypedArray]
+---*/
+
+testWithTypedArrayConstructors(function(TA) {
+  let sample = new TA(1);
+  let key = "key";
+  sample.string = key;
+
+  $DETACHBUFFER(sample.buffer);
+
+  assert.sameValue(delete sample.string, true, 'The value of `delete sample.string` is true');
+  assert.sameValue(delete sample.undef, true, 'The value of `delete sample.undef` is true');
+  assert.sameValue(delete sample[key], true, 'The value of `delete sample.string` is true');
+  assert.sameValue(delete sample["undef"], true, 'The value of `delete sample.undef` is true');
+});
+
+reportCompare(0, 0);