Add Array.of non-writable property test

test/built-ins/Array/of/does-not-use-set-for-indices.js

@@ -0,0 +1,36 @@
+// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-array.of
+description: >
+  Non-writable properties are overwritten by CreateDataProperty.
+  (result object's "0" is non-writable)
+info: |
+  Array.of ( ...items )
+
+  [...]
+  7. Repeat, while k < len
+    [...]
+    c. Perform ? CreateDataPropertyOrThrow(A, Pk, kValue).
+  [...]
+includes: [propertyHelper.js]
+---*/
+
+var A = function(_length) {
+  Object.defineProperty(this, "0", {
+    value: 1,
+    writable: false,
+    enumerable: false,
+    configurable: true,
+  });
+};
+
+var res = Array.of.call(A, 2);
+
+verifyProperty(res, "0", {
+  value: 2,
+  writable: true,
+  enumerable: true,
+  configurable: true,
+});