Grid: rendering using react-test-renderer breaks in 9.19.0

[wuweiweiwu]

import renderer from 'react-test-renderer';

const tree = renderer
      .create(<Grid ... />)
      .toJSON();

Error message:

      Error: Uncaught [TypeError: Cannot read property 'scrollLeft' of null]

Possibly not working because react-test-renderer doesn't support the polyfilled lifecycle functions?

[wuweiweiwu]

frontend-collective/react-sortable-tree#316

[wuweiweiwu]

facebook/react#7740 react-test-renderer. Doesn't support refs. Need to pass in createNodeMock option

[nihgwu]

@wuweiweiwu but how can I pass createNodeMock to Grid? I created a Table component on Grid, and testing the Table component

[nihgwu]

can we check before accessing the ref here? https://github.com/bvaughn/react-virtualized/blob/master/source/Grid/Grid.js#L627

[wuweiweiwu]

createNodeMock is an option in react-test-renderer
https://reactjs.org/docs/test-renderer.html#ideas

[wuweiweiwu]

If you want to contribute a PR that'll be awesome!!

[nihgwu]

@wuweiweiwu seems createNodeMock is applied to all the nested components when creating, but that's still odd to me that I have to add that option manually in every test case, I'm testing my own Table component, and don't use refs in cDM, Grid should be transparent for me