[material-ui][useMediaQuery] Adapt test implementation for React 19 #43269
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aarongarciah
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package: material-ui
Netlify deploy previewhttps://deploy-preview-43269--material-ui.netlify.app/ Bundle size report |
siriwatknp
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Aug 12, 2024
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While upgrading to React 19 (PR) a
useMediaQuerytest started to fail.React 19 is calling
React.useMemoand other hooks in a different way than React 18 and that is making ourfakeMatchMediatest implementation to fail. This fake implementation keeps a list ofmatchMediainstances to later be able to assert things, but the list of instances has a different order in React 18 and React 19.To solve it, I've added a
MapofmatchMediainstances so we only create one for a givenquery. This is closer to how the realwindow.matchMediais used inuseMediaQuery, because it's just a local variable (see source code).The changes in this PR makes the test pass also in React 19 as you can see in #42824