1 files changed, 41 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/DefineOwnProperty/BigInt/key-is-numericindex-desc-not-writable-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/DefineOwnProperty/BigInt/key-is-numericindex-desc-not-writable-throws.js
new file mode 100644
index 0000000000..6ddf3303df
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+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/internals/DefineOwnProperty/BigInt/key-is-numericindex-desc-not-writable-throws.js
@@ -0,0 +1,41 @@
+// Copyright (C) 2021 Alexey Shvayka. 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: >
+  Throws TypeError for valid index & non-writable descriptor.
+info: |
+  [[DefineOwnProperty]] ( P, Desc )
+
+  [...]
+  3. If Type(P) is String, then
+    a. Let numericIndex be ! CanonicalNumericIndexString(P).
+    b. If numericIndex is not undefined, then
+      [...]
+      v. If Desc has a [[Writable]] field and if Desc.[[Writable]] is false, return false.
+includes: [testBigIntTypedArray.js]
+features: [BigInt, TypedArray]
+---*/
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+  var sample = new TA([0n]);
+
+  assert.throws(TypeError, function() {
+    Object.defineProperty(sample, "0", {
+      writable: false,
+    });
+  }, "partial descriptor");
+
+  assert.throws(TypeError, function() {
+    Object.defineProperty(sample, "0", {
+      value: 42n,
+      writable: false,
+      enumerable: true,
+      configurable: true,
+    });
+  }, "complete descriptor");
+
+  assert.sameValue(sample[0], 0n, "side effect check");
+});
+
+reportCompare(0, 0);