js/src/tests/test262/built-ins/Function/prototype/S15.3.5.2_A1_T1.js


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36

// 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_T1
description: >
    Checking if deleting the prototype property of Function("", null)
    fails
includes: [propertyHelper.js]
---*/

var f = new Function("", null);

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.

reportCompare(0, 0);