Classify frontend test cases by the appropriate test-pyramid layer.
Place each test idea in the cheapest reliable test-pyramid layer. Unit test Component/integration test End-to-end test Calculate tax and discount totals for 20 input combinations A reducer turns selected filters into a query object The autocomplete renders suggestions, supports keyboard selection, and calls the search API mock A failed form submission shows field errors connected to inputs A user can add an item, pay with a test card, and reach the receipt page A signed-out user is redirected from billing to sign in and returns after login
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