Browser Automated Testing Frameworks - Nightwatch.js
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Browser automation testing frameworks like Nightwatch.js allow developers to automatically test their web applications. Nightwatch.js provides an easy way to write tests using JavaScript. Tests can launch browsers, fill forms, click links, and verify outputs. Nightwatch.js tests can help developers catch errors that might break functionality and ensure compatibility across browsers. The documentation is good and it is actively maintained with over 10,000 downloads per month. Developers can integrate Nightwatch.js tests into their own projects to avoid future issues.
Browser Automated Testing Frameworks - Nightwatch.js
- 1. Frameworks for Browser Automation Testing Luís A. Bastião Silva University of Aveiro DETI / IEETA bastiao@ua.pt
- 2. Outline • Motivation • Comparison between frameworks • Nightwatch.js – How it works? – How to write tests? – How to run the tests? • How to use in your project? • Demo
- 3. What is Browse Automating Tests? You can use it also to automate your daily tasks, if you are able to do it.. • Launch and automate your browser • Fill and submit forms • Click and follow links • Verify if the output is according of what you define.
- 4. Motivation • Often web developers changes in the interface, change the code, we fix bugs and add new features. • Sometimes it conduct to wrong results • Browser Compatibility - break functionality • Test with heterogeneous datasets 4 .. or in other words, why should I use Browse Automated Testing? Software developers are humans and they made mistakes. Developers can type: “id="buttob_searc” where should be “id=“button_search” – and it breaks the functionality. Browse automated tests can detect it!
- 5. Comparison between different frameworks Name Nightwatch.js Selenium Browsera dalekjs htmlunit watin sahipro venusjs OSS Yes Yes Paid Yes Yes Yes Paid Yes Activity High High Support Medium Low Low Support Medium WebDriver Yes Yes Yes Yes No No, IE only Yes Yes Jenkins* Medium Medium Automated tests, reports Medium Unknown Unknown Automated tests, reports Medium Feel free to contribute to this comparison: http://goo.gl/Vq3WeO Output Very good, JUnit Very good, JUnit Very good, UI Navigation Good Good Unknown Very good, UI Navigation Unknown Difficulty to write Easy Medium (syntax is not good) Easy Easy Verbose Easy Easy--- Easy Deployment Medium Medium Easy Medium Medium Easy Easy Medium Observations Selenium - - Docs not good - - - Developed by LinkedIn
- 6. Why nightwatch.js? • Easy to write tests • Github activity • Free • Good documentation • Supports IE ( we know that no one cares, but in the end everybody cares. ) • It is working now. • More info: – ~10k downloads/month – ~150 forks (github) – ~2300 stars (github)
- 7. Nightwatch.js architecture What are behind it? From: http://nightwatchjs.org/guide#theory-of-operation and http://www.slideshare.net/sethmcl/join-the-darkside-nightwatchjs
- 8. Directory structure How to start? What files should I have? How the test groups works? • Install: – $ npm install nightwatch – Run Selenium server • nightwatch.js – #!/usr/bin/env node – require('nightwatch/bin/runner.js'); • nightwatch.json • Tests/ – Login.js – Accounts/0001_landing_page.js – Accounts/0002_register.js – dashboard/0001_widgets.js – Your own structure, you define it!
- 10. Test sample workflow 1. Open Browser URL 2. Locate the username field and fill it with “admin” 3. Find the password field and fill it with “doNotGiveATry” 4. Find the Login button and submit 5. Verify the output to check if it successes. You need to know Javascript and how to use CSS or Xpath Selectors. You can learn about it here: http://www.w3.org/TR/CSS21/selector.html or http://www.w3schools.com/css/css_attribute_selectors.asp
- 11. Assertation or Verification • assert.title(‘automated tests rocks’) – If false, log failure and stop to run the test suite. • verification.title(‘automated tests rocks’) – If false, log failure and continue running the test suite.
- 12. What kind of assertations exists? • .assert.title(‘Catalogue’) • .assert.urlContains('done') • .assert.elementPresent('#results_size', ’0 results') • css properties, … and more available!
- 13. How to run? • $ node nightwatch.js –-env=chrome • Windows you can test with ie: – $ node nightwatch.js –-env=chrome,ie, firefox • You can skip test groups: – $ node nightwatch –-env=chrome –-skip-group= accounts,dashboard • You can run the only ones that has a specific tag: – $ node nightwatch –-env=chrome –-tag=login
- 14. What the output it retrieves? Console output
- 15. What the output it retrieves? Junit format
- 16. Can I use it in my own project? Write tests? Nooooooooooooooo! • Is your project web? If yes: – Yes, you should. – We have a Windows machine up and running You can integrate Jenkins of the Bio group. – In some cases you may need to change the webapp to become the life easier. – You will avoid headaches in the future If you do NOT use Browse Automating Testing: Development stage Productio n User Feedback
- 17. Can I use it in my own project? Write tests? Easy life! But yes, you still spend time, but you win upfront. • Is your project web? If yes: – Yes, you should. – We have a Windows machine up and running You can integrate Jenkins of the Bio group. – In some cases you may need to change the webapp to become the life easier. – You will avoid headaches in the future If you do USE Browse Automating Testing: Development Productio Usenr Feedback Write Tests
- 18. Credits & References • Ricardo Ribeiro – He did the first steps in the nightwatch.js – Deployed the full solution in Windows environment – Write tests for EMIF Catalogue • http://nightwatchjs.org/ • http://www.slideshare.net/sethmcl/join-the- darkside-nightwatchjs • It will be available in my slideshare: – http://www.slideshare.net/bastiao
- 19. See it running… • EMIF Catalogue, let’s check the tests
- 20. Thanks for your attention! Luís A. Bastião Silva University of Aveiro DETI / IEETA bastiao@ua.pt