JSTests/test262/test/built-ins/Function/prototype/S15.3.5.2_A1_T2.js

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

/*---
info: the prototype property has the attributes { DontDelete }
es5id: 15.3.5.2_A1_T2
description: >
    Checking if deleting the prototype property of Function(void 0,
    "") fails
includes: [propertyHelper.js]
---*/

var f = Function(void 0, "");

assert(f.hasOwnProperty('prototype'));

var fproto = f.prototype;

verifyNotConfigurable(f, "prototype");

try {
  assert.sameValue(delete f.prototype, false);
} catch (e) {
  if (e instanceof Test262Error) {
    throw e;
  }
  assert(e instanceof TypeError);
}

if (f.prototype !== fproto) {
  throw new Test262Error('#3: the prototype property has the attributes { DontDelete }');
}

// TODO: Convert to verifyProperty() format.