Frontend & browser·Testing a user interface
you drove a real browser through the whole signup flow against a running server.
End-to-end test
Also calledE2E test, browser test
A test exercising the deployed system as a user does, in a real browser, against real or near-real services. It is the only kind that can prove a flow works, and it is slow, expensive and the most likely to be flaky. Keep a small number covering the paths that must never break, and push everything else down to cheaper layers.