[ra-test] No way to use custom dataProvider as shown in the examples

[DjebbZ]

In the ra-test README, the last examples declare a custom dataProvider but then never use them. And <TestContext /> don't provide a way to pass a custom dataProvider (I've read the code).

Is this an unimplemented possibility ? A bug in the documentation ? Something missing ?

[djhi]

This is indeed a documentation issue. TestContext does not even wrap anything with a DataProvider context. You have to do it yourself. Until we fix the documentation and/or provide more tools around this, you can refer to some our tests. For instance: https://github.com/marmelab/react-admin/blob/master/packages/ra-core/src/controller/useListController.spec.tsx#L59

[DjebbZ]

Thanks for the pointer !

It kinda works because we now move the loaded/loading booleans correctly, but the total received inside our list is still undefined whatever I return from the fake dataProvider. I need to wrap my head around what's happening in useGetMainList.

[WiXSL]

Fixed by #6600