Testing is an important aspect of software development, and AngularJS provides a framework for testing. In this step, we will learn about testing AngularJS applications using the Jasmine testing framework and Karma test runner.

Unit testing is the process of testing individual components of an application in isolation, whereas end-to-end testing is the process of testing the entire application. AngularJS provides support for both types of testing.

Jasmine is a behavior-driven development (BDD) testing framework that provides a syntax for writing tests. Karma is a test runner that allows you to run tests in multiple browsers.

AngularJS provides the ngMock module, which provides a set of utilities for testing AngularJS applications. The ngMock module provides mock implementations of AngularJS services and allows you to inject dependencies into your tests.

Table of comparisons:

Unit Testing	End-to-End Testing
Tests individual components of an application in isolation	Tests the entire application
Uses Jasmine testing framework	Uses Protractor testing framework
Uses Karma test runner	Uses Protractor test runner
Uses ngMock module to provide mock implementations	Uses WebDriver to interact with the application
of AngularJS services and inject dependencies into tests	and test its functionality

Text Diagrams:

Unit Testing in AngularJS:

+----------------------------------------------------+
|             Write test cases using Jasmine         |
+----------------------------------------------------+
|                Load dependencies                   |
+----------------------------------------------------+
|                 Load test files                     |
+----------------------------------------------------+
|                   Run tests                         |
+----------------------------------------------------+

End-to-End Testing in AngularJS:

+----------------------------------------------------+
|             Write test cases using Protractor      |
+----------------------------------------------------+
|                Load dependencies                   |
+----------------------------------------------------+
|                 Load test files                     |
+----------------------------------------------------+
|         Start a web server hosting the app          |
+----------------------------------------------------+
|                   Run tests                         |
+----------------------------------------------------+

Complete Code Programs:

Here’s an example of a unit test for an AngularJS controller using Jasmine:

describe('MyController', function() {
  var scope, controller;

  beforeEach(module('myApp'));

  beforeEach(inject(function($rootScope, $controller) {
    scope = $rootScope.$new();
    controller = $controller('MyController', {$scope: scope});
  }));

  it('should set greeting to "Hello, World!"', function() {
    expect(scope.greeting).toBe('Hello, World!');
  });
});

Here’s an example of an end-to-end test for an AngularJS application using Protractor:

describe('My App', function() {
  it('should display the correct title', function() {
    browser.get('http://localhost:8080');

    expect(browser.getTitle()).toEqual('My App');
  });
});