How do you write a test case for a directive in AngularJS?

How do you write a test case for a directive in AngularJS?

You can do var myElement = $compile(”)(myScope); to create an instance of your directive, and have access to its element. If a directive creates its own scope and you want to test against it, you can get access to that directive’s scope by doing var directiveScope = myElement.

What is AngularJS directive?

Directives are markers on DOM element which tell Angular JS to attach a specified behavior to that DOM element or even transform the DOM element with its children. Simple AngularJS allows extending HTML with new attributes called Directives.

What is unit testing in Angular?

Unit tests are written using Jasmine and are run to see if individual parts of an application are working correctly. As a result, unit tests will either pass or fail depending on if the code is working correctly or has a bug. Angular uses Karma as the test runner for the project’s unit tests.

How do you test promises in AngularJS?

Key Points:

1. The most common sticking point with testing promises with the $q service is that we need to call $scope.
2. To test in isolation, we make use of Jasmine’s spyOn function to return a mock promise instance when the search function is called in the controller logic that is being tested.

What is karma unit testing?

Karma is a node-based test tool that allows you to test your JavaScript codes across multiple real browsers. A node-based tool is any tool that needs the Nodejs engine installed for it to run and can be accessed (installed) through the node package manager (npm). It is technically termed as a test-runner.

What are the Angular directives?

Angular directives are used to extend the power of the HTML by giving it new syntax. Each directive has a name — either one from the Angular predefined like ng-repeat , or a custom one which can be called anything. And each directive determines where it can be used: in an element , attribute , class or comment .

How many types of directives are there in AngularJS?

Types of Directive in AngularJS There are two types of AngularJs directives: Built-in directive.

What is unit testing and its types?

Unit testing is a type of testing in which individual units or functions of software testing. Its primary purpose is to test each unit or function. A unit is the smallest testable part of an application. It mainly has one or a few inputs and produces a single output.