Unit testing JavaScript: Jasmine & karma intro
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This document provides an introduction to unit testing JavaScript code with Jasmine and Karma. It discusses the basics of Jasmine including test suites, specs, expectations, and matchers. It then covers how to set up and run tests with Karma, including configuring Karma, running tests in browsers, handling failures, and testing AngularJS code. Specific topics covered include spies, $httpBackend for mocking HTTP requests, and testing controllers and dependencies injection.
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Vorkenntnisse:
Grundlegende JavaScript-Kenntnisse.
Lernziele:
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Description
Most projects in CF now involve creating some type of consumable CFC Endpoint or API Service... do you Unit test your API, do you use Integration Tests on your API? How many ways do you test your API? Not all tests are created equal.
We build our CFCs and CF API to be consumed with CF Apps, Mobile Apps, Javascript apps and devices we haven’t even thought about yet. To be smart developers we need to be able to test our CFC endpoints, and the code that uses those endpoints.
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With Testbox and Jasmine both using BDD, your test code can almost be isomorphic.
Attendees should have some exposure to CFCs as endpoints, or CF API creations, and consuming with other languages/devices, in this case, JavaScript.
## Attendees will learn
How to use Testbox to test your CFCs 2 different ways
Different types and ways to test JavaScript
Overview of client/server side testing tools
Building testing into your workflow
You are one of many that are not testing your APIs thoroughly
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grade 9 ai project cycle Artificial intelligence.pptx
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What you'll learn in just 8 slides:
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Unit testing JavaScript: Jasmine & karma intro
- 1. JASMINE & KARMA Unit testing your JavaScript code Maurice de Beijer
- 2. Goals • Understand how to write Jasmine BDD specs • Run Jasmine specs using Karma • Test AngularJS code with Jasmine and Karma
- 4. Jasmine • Test suites describe the functionality • Using a describe() function • Can be nested • Specs test the functionality • Using an it() function • Contain one or more expectations
- 6. Running Jasmine tests • We need a test runner to execute tests • The browser • Visual Studio with R# • Karma
- 7. Successful test in the Browser
- 9. Matchers • Used to verify expectations • toBe() • toEqual() • toMatch() • toBeDefined() • toBeTruthy() • toContain() • toBeGreaterThan() • toBeCloseTo() • And more • Can create custom matchers if needed • You can also throw an Error to fail a test
- 10. Jasmine spies • Can intercept function calls • Verify if the function was called • Optionally with specific parameters • Can be configured to: • Call original function • Return a predefined result • Call a fake function • Throw an Error
- 12. Karma Setup • Karma is a NodeJS application • So first install Node.js • Install Karma using NPM • NPM Install Karma-Cli – g • NPM Install Karma –save-dev • Karma requires a configuration file • Create using karma init • Requires a browser to run tests • PhantomJS is an invisible browser • Can use multiple browser at the same time • Either in the config file • Or by navigating to http://localhost:9876/
- 13. Successful test in Karma
- 14. Failing test in Karma
- 15. Testing AngularJS code • Include angular-mocks.js as the last AngularJS script • Changes some of the normal behavior • Create Jasmine test as normal • Add beforeEach() to load module under test • Use the inject() function to trigger Dependency Injection • The $controller service is the factory to create controllers • Usually requires at least a $scope • Other dependencies can be provided • If not the normal DI lookup happens.
- 16. $httpBackend • Fake implementation of the XmlHttpRequest • Expected requests can be configured • whenGET, whenPOST etc • expectGET, expectPOST etc • When... functions are soft requirement • Do not fail a test • Will resolve multiple time • Expect… functions are assertions • Fail a test is not satisfied • Appears to the calling code as asynchronous • Use flush() to resolve requests
- 17. Questions? • Source code on GitHub • https://github.com/mauricedb/Jasmine-Karma-Intro