E2E Text
This test is used to verify that the entire system is working properly, including scenario testing, functional testing, integration testing, and GUI testing. Since API integration is included in the test items, test doubles like mocks or stubs are generally not used, and the simulation is conducted from a user's perspective using the actual system as much as possible.
A headless browser is a browserless interface that can be manipulated through command line commands, including Zombie.js based on Jsdom, Phantom.js based on the WebKit engine, and Slimer.js based on the Gecko engine.
System tests have failed
When we introduced a default setup for system tests in Rails 5.1 back in 2016, I had high hopes. In theory, system tests, which drive a headless browser through your actual interface, offer greater confidence that the entire machine is working as it ought. And because it runs in a black-box fashion, it should be more resilient to imple...
https://world.hey.com/dhh/system-tests-have-failed-d90af718

Seonglae Cho