jasmine/before-and-after.html.md

---
  layout: default
  title: 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:

    describe('some suite', function () {

      var suiteWideFoo;

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

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

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:

    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']);
      });
    });

#### afterEach

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

    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);
      };
    });

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:

    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']);
      };
    });

### 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.

    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");
      });