jasmine/before-and-after.html.md

layout	title
default	Before and After a Jasmine Spec

beforeEach

A suite can have a beforeEach() declaration. It takes a function that is run before each spec. For example:

{% highlight javascript %} describe('some suite', function () { var suiteWideFoo;

beforeEach(function () { suiteWideFoo = 1; });

it('should equal bar', function () { expect(suiteWideFoo).toEqual(1); }); }); {% endhighlight %}

A runner can also have beforeEach() declarations. Runner beforeEach() functions are executed before every spec in all suites, and execute BEFORE suite beforeEach() functions. For example:

{% highlight javascript %} var runnerWideFoo = [];

beforeEach(function () { runnerWideFoo.push('runner'); });

describe('some suite', function () { beforeEach(function () { runnerWideFoo.push('suite'); });

it('should equal bar', function () { expect(runnerWideFoo).toEqual(['runner', 'suite']); }); }); {% endhighlight %}

afterEach

Similarly, there is an afterEach() declaration. It takes a function that is run after each spec. For example:

{% highlight javascript %} describe('some suite', function () { var suiteWideFoo; afterEach(function () { suiteWideFoo = 0; });

it('should equal 1', function () { expect(suiteWideFoo).toEqual(1); });

it('should equal 0 after', function () { expect(suiteWideFoo).toEqual(0); }; }); {% endhighlight %}

A runner can also have an afterEach() declarations. Runner afterEach() functions are executed after every spec in all suites, and execute AFTER suite afterEach() functions. For example:

{% highlight javascript %} var runnerWideFoo = [];

afterEach(function () { runnerWideFoo.push('runner'); });

describe('some suite', function () { afterEach(function () { runnerWideFoo.push('suite'); });

it('should be empty', function () { expect(runnerWideFoo).toEqual([]); });

it('should be populated after', function () { expect(runnerWideFoo).toEqual(['suite', 'runner']); }; }); {% endhighlight %}

Single-spec After functions

A spec may ask Jasmine to execute some code after the spec has finished running; the code will run whether the spec finishes successfully or not. Multiple after functions may be given.

{% highlight javascript %} describe('some suite', function () { it(function () { var originalTitle = window.title; this.after(function() { window.title = originalTitle; }); MyWindow.setTitle("new value"); expect(window.title).toEqual("new value"); }); {% endhighlight %}