1 files changed, 50 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/Delete/BigInt/key-is-not-numeric-index-strict-strict.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/Delete/BigInt/key-is-not-numeric-index-strict-strict.js
new file mode 100644
index 0000000000..2a9f7171e9
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/Delete/BigInt/key-is-not-numeric-index-strict-strict.js
@@ -0,0 +1,50 @@
+'use strict';
+// 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: >
+  Use OrdinaryDelete if key is not a CanonicalNumericIndex
+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.
+    ...
+  Return ? OrdinaryDelete(O, P).
+flags: [onlyStrict]
+includes: [testBigIntTypedArray.js]
+features: [align-detached-buffer-semantics-with-web-reality, BigInt, TypedArray]
+---*/
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+  TypedArray.prototype.baz = "baz";
+  let sample = new TA(1);
+
+  assert.sameValue(
+    delete sample.foo, true,
+    'The value of `delete sample.foo` is true'
+  );
+
+  sample.foo = "foo";
+  assert.sameValue(delete sample.foo, true, 'The value of `delete sample.foo` is true');
+
+  Object.defineProperty(sample, "bar", {
+    get() { return "bar"; }
+  });
+
+  assert.throws(TypeError, () => {
+    delete sample.bar;
+  }, '`delete sample.bar` throws TypeError');
+
+  assert.sameValue(delete sample.baz, true, 'The value of `delete sample.baz` is true');
+});
+
+reportCompare(0, 0);