# Use `.only` and `.skip` over `f` and `x` (no-test-prefixes) Jest allows you to choose how you want to define focused and skipped tests, with multiple permutations for each: - **only & skip:** `it.only`, `test.only`, `describe.only`, `it.skip`, `test.skip`, `describe.skip`. - **'f' & 'x':** `fit`, `fdescribe`, `xit`, `xtest`, `xdescribe`. This rule enforces usages from the **only & skip** list. ## Rule details This rule triggers a warning if you use one of the keywords from the **'f' & 'x'** list to focus/skip a test. ```js /*eslint jest/no-test-prefixes: "error"*/ it.only('foo'); // valid test.only('foo'); // valid describe.only('foo'); // valid it.skip('foo'); // valid test.skip('foo'); // valid describe.skip('foo'); // valid fit('foo'); // invalid fdescribe('foo'); // invalid xit('foo'); // invalid xtest('foo'); // invalid xdescribe('foo'); // invalid ```