https://github.com/thinkmill/jest-expect-contain-deep

Assert deeply nested values in Jest
https://github.com/thinkmill/jest-expect-contain-deep

assertion deep jest matcher test

Last synced: 8 days ago
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Assert deeply nested values in Jest

• Host: GitHub
• URL: https://github.com/thinkmill/jest-expect-contain-deep
• Owner: Thinkmill
• License: mit
• Created: 2017-09-21T11:21:54.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2023-01-12T09:53:09.000Z (about 2 years ago)
• Last Synced: 2025-01-31T10:15:10.700Z (13 days ago)
• Topics: assertion, deep, jest, matcher, test
• Language: JavaScript
• Size: 319 KB
• Stars: 66
• Watchers: 5
• Forks: 5
• Open Issues: 17
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# jest-expect-contain-deep

> Assert deeply nested values in [Jest](https://facebook.github.io/jest/)

## Installation

```sh

yarn add --dev jest-expect-contain-deep

```

## Usage

**Before:**

```js

const containDeep = require('jest-expect-contain-deep');

test('values', () => {

  let massiveObject = getMassiveObject();

  expect(massiveObject.foo).toBe(expect.arrayContaining([1, 2]));

  expect(massiveObject.bar.prop).toBe(true);

  expect(massiveObject.baz).toContain('bar');

});

test('spies', () => {

  doSomething();

  expect(mySpy.mock.calls[0][0].foo).toBe(expect.arrayContaining([1, 2]));

  expect(mySpy.mock.calls[0][0].bar.prop).toBe(true);

  expect(mySpy.mock.calls[0][0].baz).toContain('bar');

});

```

**After:**

```js

const containDeep = require('jest-expect-contain-deep');

test('values', () => {

  expect(getMassiveObject()).toEqual(containDeep({

    foo: [1, 2],

    bar: { prop: true },

    baz: expect.stringContaining('bar'),

  }));

});

test('spies', () => {

  doSomething();

  expect(mySpy).toHaveBeenCalledWith('arg1', containDeep({

    foo: [1, 2],

    bar: { prop: true },

    baz: expect.stringContaining('bar'),

  }));

});

```