Troubleshooting and Suggestions
Explore how to troubleshoot common issues like empty node lists in your PHP automated tests and learn to write more specific CSS selectors for accurate assertions. This lesson helps you enhance your test coverage by adding various tests for CRUD and authentication features, verify error pages, and improve testing skills to develop more reliable PHP web applications.
Viewing contents of the response
If you are calling $response->filter() and you get a failing test saying “InvalidArgumentException: The current node list is empty.”, you might not be using the correct filter, or the page is not the one you expect it to be. To find out what the response actually looks like, you may do var_dump($client->getResponse()); exit; inside your test.
Writing better and more specific selectors
Pretty much every selector that works in CSS works as an argument of filter() ...