Difference between revisions of "7CC005 Workshop w6"

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[[Main Page]] >> [[7CC005|Web Technologies]] >> [[7CC005_-_Workbook|Workbook]] >> Week 07 - Automated Web Testing
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[[Main Page]] >> [[7CC005|Web Technologies]] >> [[7CC005_-_Workbook|Workbook]] >> Week 06 - Automated Web Testing
  
== Official Google Angular testing guide ==
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== Testing with React.js ==
 +
You can test React components similar to testing other JavaScript code.
 +
* [https://reactjs.org/docs/testing.html Testing Overview]
  
The main Angular testing guide is located here:
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===Recommended Tools===
* [https://angular.io/docs/ts/latest/guide/testing.html https://angular.io/docs/ts/latest/guide/testing.html]
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Jest is a JavaScript test runner that lets you access the DOM via jsdom. While jsdom is only an approximation of how the browser works, it is often good enough for testing React components. Jest provides a great iteration speed combined with powerful features like mocking modules and timers so you can have more control over how the code executes.
  
You should probably read up to "Test a component with an async service". Please note that there are links to all live working examples near the beginning of the tutorial.
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React Testing Library is a set of helpers that let you test React components without relying on their implementation details. This approach makes refactoring a breeze and also nudges you towards best practices for accessibility. Although it doesn’t provide a way to “shallowly” render a component without its children, a test runner like Jest lets you do this by mocking.
  
== Adding PhantomJS into the mix ==
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== Testing your REST API with Postman ==
  
This is how to get the QuickStart project to work with Karma and PhantomJS.
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You can send requests in Postman to connect to APIs you are working with. Your requests can retrieve, add, delete, and update data. Whether you are building or testing your own API, or integrating with a third-party API, you can try out your requests in Postman. Your requests can send parameters, authorization details, and any body data you require.
 +
* [https://www.postman.com/ https://www.postman.com/]
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* [https://learning.postman.com/docs/sending-requests/requests/ Building requests]
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* [https://learning.postman.com/docs/writing-scripts/test-scripts/ Write API test scripts in Postman]
  
=== Clone the repository ===
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== Going further ==
  
First you need to get the quickstart project:
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In this tutorial, we will set up a small project with automated visual tests using Puppeteer, Jest and VisWiz.io. 💡
 
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* [https://www.viswiz.io/help/tutorials/puppeteer Visual Regression Testing with Puppeteer & Jest]
<pre>
 
$ git clone https://github.com/angular/quickstart.git
 
$ cd quickstart
 
</pre>
 
 
 
'''Important:''' Obviously don't do this again if you already have it.
 
 
 
=== Install phantomjs and phantomjs launcher ===
 
 
 
<pre>
 
$ npm install --save-dev phantomjs
 
$ npm install --save-dev karma-phantomjs-launcher
 
</pre>
 
 
 
=== Change karma.conf.js ===
 
 
 
<pre>
 
// First change
 
require('karma-chrome-launcher') => require('karma-phantomjs-launcher')
 
 
 
// Second change
 
browsers: ['Chrome'] => browsers: ['PhantomJS']
 
</pre>
 
 
 
=== Install Quickstart App ===
 
$ npm install
 
 
 
=== Run tests ===
 
$ npm test
 
 
 
=== TypeError: undefined is not a function error ===
 
 
 
If you get this error:
 
 
 
<pre>
 
PhantomJS 2.1.1 (Linux 0.0.0) ERROR
 
TypeError: undefined is not a function (evaluating 'System.config')
 
at karma-test-shim.js:30
 
 
 
</pre>
 
 
 
Append system-polyfills.js to karma.conf.js:
 
 
 
<pre>
 
files: [
 
  // System.js for module loading
 
  'node_modules/systemjs/dist/system.src.js',
 
  'node_modules/systemjs/dist/system-polyfills.js',
 
</pre>
 

Latest revision as of 11:36, 17 January 2024

Main Page >> Web Technologies >> Workbook >> Week 06 - Automated Web Testing

Testing with React.js

You can test React components similar to testing other JavaScript code.

Recommended Tools

Jest is a JavaScript test runner that lets you access the DOM via jsdom. While jsdom is only an approximation of how the browser works, it is often good enough for testing React components. Jest provides a great iteration speed combined with powerful features like mocking modules and timers so you can have more control over how the code executes.

React Testing Library is a set of helpers that let you test React components without relying on their implementation details. This approach makes refactoring a breeze and also nudges you towards best practices for accessibility. Although it doesn’t provide a way to “shallowly” render a component without its children, a test runner like Jest lets you do this by mocking.

Testing your REST API with Postman

You can send requests in Postman to connect to APIs you are working with. Your requests can retrieve, add, delete, and update data. Whether you are building or testing your own API, or integrating with a third-party API, you can try out your requests in Postman. Your requests can send parameters, authorization details, and any body data you require.

Going further

In this tutorial, we will set up a small project with automated visual tests using Puppeteer, Jest and VisWiz.io. 💡