| // Copyright (C) 2011 the Sputnik authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-object.prototype.isprototypeof |
| description: > |
| The ordering of steps 1 and 2 preserves the behaviour specified by previous |
| editions of this specification for the case where V is not an object and |
| the this value is undefined or null. |
| info: | |
| Object.prototype.isPrototypeOf ( V ) |
| |
| 1. If Type(V) is not Object, return false. |
| 2. Let O be ? ToObject(this value). |
| ---*/ |
| |
| assert.throws(TypeError, function() { |
| Object.prototype.isPrototypeOf.call(null, function() {}); |
| }); |