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Chai Assertion Matchers for Backbone.js
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README.md

chai-backbone

Build Status NPM Version

chai-backbone is an extension to the chai assertion library that provides a set of backbone specific assertions.

Use the assertions with chai's expect or should assertions.

Dependencies

Assertions

trigger

model.should.trigger("change", with: [model]).when ->
  model.set attribute: "value"

this can also be chained further:

model.should.trigger("change").and.trigger("change:attribute").when -> model.set attribute: "value"
model.should.trigger("change").and.not.trigger("reset").when -> model.set attribute: "value"

route.to

Tests if a route is delegated to the correct router and if the arguments are extracted in the expected manner.

"page/3".should.route.to myRouter, "openPage", arguments: ["3"]
"pages/3".should.not.route.to myRouter, "openPage"
"page/3".should.route.to myRouter, "openPage", considering: [conflictingRouter]

call

This assertion is ideal for testing view callbacks it will rebind view events to test DOM events

view.should.call('startAuthentication').when ->
  view.$('a.login').trigger 'click'

Installation and Setup

Node

Do an npm install chai-backbone to get up and running. Then:

var chai = require("chai");
var chaiBackbone = require("chai-backbone");

chai.use(chaiBackbone);

You can of course put this code in a common test fixture file; for an example using Mocha

AMD

Chai Backbone supports being used as an AMD module, registering itself anonymously (just like Chai). So, assuming you have configured your loader to map the Chai and Chai Backbone files to the respective module IDs "chai" and "chai-backbone", you can use them as follows:

define(function (require, exports, module) {
    var chai = require("chai");
    var chaiBackbone = require("chai-backbone");

    chai.use(chaiBackbone);
});

<script> tag

If you include Chai Backbone directly with a <script> tag, after the one for Chai itself, then it will automatically plug in to Chai and be ready for use:

<script src="chai.js"></script>
<script src="chai-backbone.js"></script>

License

Copyright (c) 2012 Matthijs Groen

MIT License (see the LICENSE file)

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