Blog category
End-to-end testing practice
How many end-to-end tests to write, who writes them and what they cost to keep.
End-to-end testing practice
E2E test maintenance cost: where it comes from and how to cut it
The cost of maintaining end-to-end tests comes from interface churn, flaky failures and triage time. Cut it with a focused suite and clear failure types.
End-to-end testing practice
End-to-end testing vs integration testing: where each belongs
Integration tests check that two parts of a system work together at one boundary. End-to-end tests check a user journey. Use integration tests for most logic.
End-to-end testing practice
How many E2E tests do you need: one per critical user flow
You need one end-to-end test per user flow whose failure would cost revenue, data or trust. Start with a handful and push every other check down the pyramid.
End-to-end testing practice
Who should write end-to-end tests: the author of the change
The engineer or coding agent that changes a flow should update its end-to-end test in the same pull request. QA owns the flow list, review and exploratory work.
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