JSTests/test262/test/built-ins/Number/MAX_SAFE_INTEGER.js

// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: Property descriptor for `Number.MAX_SAFE_INTEGER`
esid: sec-number.max_safe_integer
es6id: 20.1.2.6
info: >
    The value of Number.MAX_SAFE_INTEGER is 9007199254740991

    This property has the attributes { [[Writable]]: false, [[Enumerable]]:
    false, [[Configurable]]: false }.
includes: [propertyHelper.js]
---*/

var desc = Object.getOwnPropertyDescriptor(Number, 'MAX_SAFE_INTEGER');

assert.sameValue(desc.set, undefined, 'Does not define a `get` accessor');
assert.sameValue(desc.get, undefined, 'Does not define a `set` accessor');
assert.sameValue(desc.value, 9007199254740991);

verifyNotEnumerable(Number, 'MAX_SAFE_INTEGER');
verifyNotWritable(Number, 'MAX_SAFE_INTEGER');
verifyNotConfigurable(Number, 'MAX_SAFE_INTEGER');