Jasmine (JavaScript framework)

Jasmine ( Jasmine Core ) is a free unit testing library for JavaScript. Jasmine is executable on any JavaScript-capable platform (especially without a web browser or Document Object Model ) and requires no adjustment of the test system (System Under Test). The very basic test description language modeled on the test case notation of Behavior Driven Development ( BDD). Great influence on the development had other unit test libraries like ScrewUnit, JSSpec, JSpec and RSpec.

Use

Jasmine testing should be easy to read. A simple hello world test looks like the source code below, which describe () describes a test scenario and it ( ) a single test case. In the BDD sense, refers it ( ) the test system and is as subject along with the test name form a complete ( English ) sentence describing the test case.

Describe ( 'Hello world! ', function () {    it ( ' says hello ', function () {     . expect ( hello world ()) toEqual ( 'Hello world! ');    });      it ( 'does not save the world ', function () {      expect ( hello world ())       . not.toBe ( ' saving the world ');    }); }); Conditions are expressed by comparison functions ( matchers ) as expect (expression). ToEqual ( test value ), ... toBeTruthy (), ... toBeGreaterThan (7.5) or ... toBeDefined (). For more complex test scenarios describe () expressions are nested. Use of Spies ( Spies) can be deposited expected function calls and their signature. Expect ( Objekt.Funktion ) toHaveBeenCalledWith (parameter list). It can be replaced by stubs or mock objects or observation capabilities are injected.

Further functionalities of Jasmine include the time trace and asynchronous function calls.