JSTests/test262/test/built-ins/Function/prototype/S15.3.3.1_A3.js

// Copyright 2009 the Sputnik authors.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
info: The Function.prototype property has the attribute DontDelete
es5id: 15.3.3.1_A3
description: Checking if deleting the Function.prototype property fails
includes: [propertyHelper.js]
---*/

verifyNotConfigurable(Function, "prototype");

//CHECK#1
try {
  if ((delete Function.prototype) !== false) {
    $ERROR('#1: Function.prototype has the attribute DontDelete');
  }
} catch (e) {
  if (e instanceof Test262Error) throw e;
  assert(e instanceof TypeError);
}

//CHECK#2
if (!(Function.hasOwnProperty('prototype'))) {
  $ERROR('#2: the Function.prototype property has the attributes DontDelete.');
}