https://github.com/ljharb/mock-property
Given an object and a property, replaces a property descriptor (or deletes it), and returns a thunk to restore it.
https://github.com/ljharb/mock-property
define delete descriptor mock object property test testing value
Last synced: 13 days ago
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Given an object and a property, replaces a property descriptor (or deletes it), and returns a thunk to restore it.
- Host: GitHub
- URL: https://github.com/ljharb/mock-property
- Owner: ljharb
- License: mit
- Created: 2022-04-15T03:38:56.000Z (over 3 years ago)
- Default Branch: main
- Last Pushed: 2024-08-22T19:34:05.000Z (about 1 year ago)
- Last Synced: 2025-01-02T20:51:47.122Z (9 months ago)
- Topics: define, delete, descriptor, mock, object, property, test, testing, value
- Language: JavaScript
- Homepage:
- Size: 79.1 KB
- Stars: 8
- Watchers: 2
- Forks: 1
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- Funding: .github/FUNDING.yml
- License: LICENSE
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# mock-property [![Version Badge][npm-version-svg]][package-url]
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Given an object and a property, replaces a property descriptor (or deletes it), and returns a thunk to restore it.
## Example
```js
var mockProperty = require('mock-property');
var assert = require('assert');
var i = 0;
var object = {
a: 1,
get b() {
i += 1;
return 'b ' + i;
}
};
assert.equal(object.a, 1);
assert.equal(object.b, 'b 1');
assert.equal(object.b, 'b 2');
var restoreA = mockProperty(object, 'a', { 'delete': true });
assert.equal('a' in object, false);
var restoreB = mockProperty(object, 'b', { value: 42 });
assert.equal(object.b, 42);
restoreA();
assert.equal('a' in object, true);
restoreB();
assert.equal(object.b, 'b 3');
```
## Tests
Simply clone the repo, `npm install`, and run `npm test`
## Security
Please email [@ljharb](https://github.com/ljharb) or see https://tidelift.com/security if you have a potential security vulnerability to report.
[package-url]: https://npmjs.org/package/mock-property
[npm-version-svg]: https://versionbadg.es/ljharb/mock-property.svg
[deps-svg]: https://david-dm.org/ljharb/mock-property.svg
[deps-url]: https://david-dm.org/ljharb/mock-property
[dev-deps-svg]: https://david-dm.org/ljharb/mock-property/dev-status.svg
[dev-deps-url]: https://david-dm.org/ljharb/mock-property#info=devDependencies
[npm-badge-png]: https://nodei.co/npm/mock-property.png?downloads=true&stars=true
[license-image]: https://img.shields.io/npm/l/mock-property.svg
[license-url]: LICENSE
[downloads-image]: https://img.shields.io/npm/dm/mock-property.svg
[downloads-url]: https://npm-stat.com/charts.html?package=mock-property
[codecov-image]: https://codecov.io/gh/ljharb/mock-property/branch/main/graphs/badge.svg
[codecov-url]: https://app.codecov.io/gh/ljharb/mock-property/
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[actions-url]: https://github.com/ljharb/mock-property/actions