How to do functional testing for a website?

How do I perform functional testing of a website?

• Is it done manually or automatically?

• Answer:

  Is it done manually or automatically? Yes. In general, you want to start manually and then automate once you understand all the important test paths. Whichever you do, the first step is to write out the tests that need to be done to ensure that all the functionality works each time you ship or deploy. The tests include everything from checking that no links are broken to checking that each tiny interaction in your web app performs properly and fails elegantly. It's handy to start with written checklists that humans can follow because they'll evolve over time as features change or as new bugs or failure modes emerge. You can then start to automate parts of the checklist. Numerous tools exist for this depending on your platform and requirements. Automation saves you a ton of time testing every deploy by hand, but also gives you one more thing to keep up to date.