Adding upstream version 86.0.1.upstream/86.0.1upstream

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

1 files changed, 16 insertions, 0 deletions

diff --git a/js/src/tests/test262/harness/propertyhelper-verifywritable-array-length.js b/js/src/tests/test262/harness/propertyhelper-verifywritable-array-length.js
new file mode 100644
index 0000000000..d014595fe9
--- /dev/null
+++ b/js/src/tests/test262/harness/propertyhelper-verifywritable-array-length.js
@@ -0,0 +1,16 @@
+// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: >
+  "length" property of Arrays is tested with valid value.
+includes: [propertyHelper.js]
+---*/
+
+var array = [1, 2, 3];
+
+verifyWritable(array, "length");
+
+assert.sameValue(array.length, 3, '`verifyWritable` should be non-destructive.');
+
+reportCompare(0, 0);