Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 40 insertions, 0 deletions

diff --git a/js/src/tests/test262/built-ins/Object/defineProperty/redefine-length-with-various-values-and-configurable-true.js b/js/src/tests/test262/built-ins/Object/defineProperty/redefine-length-with-various-values-and-configurable-true.js
new file mode 100644
index 0000000000..efb7dcf9be
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Object/defineProperty/redefine-length-with-various-values-and-configurable-true.js
@@ -0,0 +1,40 @@
+// Copyright (c) 2020 Rick Waldron.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-array-exotic-objects-defineownproperty-p-desc
+description: >
+  Redefining "length" to `configurable: true` throws a TypeError exception
+info: |
+  ArraySetLength ( A, Desc )
+
+  ValidateAndApplyPropertyDescriptor ( O, P, extensible, Desc, current )
+---*/
+
+let a = [1];
+
+assert.throws(TypeError, () => {
+  Object.defineProperty(a, "length", {
+    configurable: true
+  });
+});
+assert.throws(TypeError, () => {
+  Object.defineProperty(a, "length", {
+    value: 1,
+    configurable: true
+  });
+});
+assert.throws(TypeError, () => {
+  Object.defineProperty(a, "length", {
+    value: 2,
+    configurable: true
+  });
+});
+assert.throws(TypeError, () => {
+  Object.defineProperty(a, "length", {
+    value: 3,
+    configurable: true
+  });
+});
+
+reportCompare(0, 0);