https://github.com/p-baleine/expect-change

Change assertion extension for expect.js
https://github.com/p-baleine/expect-change

Last synced: 21 days ago
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Change assertion extension for expect.js

• Host: GitHub
• URL: https://github.com/p-baleine/expect-change
• Owner: p-baleine
• Created: 2013-01-10T04:06:37.000Z (almost 12 years ago)
• Default Branch: master
• Last Pushed: 2013-04-27T01:40:43.000Z (over 11 years ago)
• Last Synced: 2024-10-06T01:15:22.221Z (about 1 month ago)
• Language: JavaScript
• Size: 203 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: Readme.md

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README

        
# expect-change [![Build Status](https://travis-ci.org/p-baleine/expect-change.png?branch=master)](https://travis-ci.org/p-baleine/expect-change)

Change assertion extension for expect.js

```js

// sample obj

var counter = {

  increment: function() {

    this.counter = this.counter || 0;

    this.counter += 1;

  },

  count: function() {

    return (this.counter = this.counter || 0);

  }

};

// expectation

expect(function() { counter.increment(); })

    .to.change(function() { return counter.count(); }).from(0).to(1);

```

## How to use

### Node

Install `expect.js` and `expect-change` with NPM or add it to your package.json:

```js

$ npm install expect.js expect-change

```

Then:

```js

var expect = require('expect.js'),

    expectChange = require('expect-change');

```

### Browser

Include script tag after `expect.js`

```html

```

## API

**change**: check if the value is changed

**to**: check if the value is changed to expected value

**from**: heck if the value is changed from expected value