FrontendHaltTesting·Advanced·Conceptual·1 min read
What's a reasonable pixel-difference tolerance to configure?
Short interview answer
A small tolerance for anti-aliasing differences is normal, but it should be tight enough that a genuine one or two pixel layout shift still fails. Too loose a threshold silently accepts the small regressions the test exists to catch.
Key takeaway
Explain the underlying mental model clearly, then support it with a concrete example and its trade-offs.