1 files changed, 46 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/DefineOwnProperty/BigInt/non-extensible-new-key.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/DefineOwnProperty/BigInt/non-extensible-new-key.js
new file mode 100644
index 0000000000..0f6624e723
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/DefineOwnProperty/BigInt/non-extensible-new-key.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-integer-indexed-exotic-objects-defineownproperty-p-desc
+description: >
+  Can't define a new non-numerical key on a non-extensible instance
+info: |
+  9.4.5.3 [[DefineOwnProperty]] ( P, Desc)
+  ...
+  3. If Type(P) is String, then
+    a. Let numericIndex be ! CanonicalNumericIndexString(P).
+    b. If numericIndex is not undefined, then
+    ...
+  4. Return OrdinaryDefineOwnProperty(O, P, Desc).
+  ...
+includes: [testBigIntTypedArray.js]
+features: [BigInt, Reflect, TypedArray]
+---*/
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+  var sample = new TA([42n, 43n]);
+  Object.preventExtensions(sample);
+
+  assert.sameValue(
+    Reflect.defineProperty(sample, "foo", {value:42}),
+    false,
+    "return false on a non-extensible object - data descriptor"
+  );
+
+  assert.sameValue(Object.getOwnPropertyDescriptor(sample, "foo"), undefined);
+
+  assert.sameValue(
+    Reflect.defineProperty(sample, "bar", {
+      get: function() {},
+      set: function() {},
+      enumerable: false,
+      configurable: true
+    }),
+    false,
+    "return false on a non-extensible object - accessor descriptor"
+  );
+
+  assert.sameValue(Object.getOwnPropertyDescriptor(sample, "bar"), undefined);
+});
+
+reportCompare(0, 0);