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 // Check superficial features of Array.of.

 load(libdir + "asserts.js");

 var desc = Object.getOwnPropertyDescriptor(Array, "of");

 assertEq(desc.configurable, true);

 assertEq(desc.enumerable, false);

 assertEq(desc.writable, true);

 assertEq(Array.of.length, 0);

 assertThrowsInstanceOf(() => new Array.of(), TypeError);  // not a constructor

 // When the this-value passed in is not a constructor, the result is an array.

 for (let v of [undefined, null, false, "cow"])

     assertEq(Array.isArray(Array.of.call(v)), true);