androidx.paging.testing

@VisibleForTesting
fun <Value : Any> List<Value>.asPagingSourceFactory(): PagingSourceFactory<Int, Value>

Returns a PagingSourceFactory that creates PagingSource instances.

Can be used as the pagingSourceFactory when constructing a Pager in tests. The same factory should be reused within the lifetime of a ViewModel.

Extension method on a List of data from which a PagingSource will load from. While this factory supports multi-generational operations such as REFRESH, it does not support updating the data source. This means any PagingSources generated by the same factory will load from the exact same list of data.

@VisibleForTesting
fun <Value : Any> Flow<List<Value>>.asPagingSourceFactory(
    coroutineScope: CoroutineScope
): PagingSourceFactory<Int, Value>

Returns a PagingSourceFactory that creates PagingSource instances.

Can be used as the pagingSourceFactory when constructing a Pager in tests. The same factory should be reused within the lifetime of a ViewModel.

Extension method on a Flow of list that represents the data source, with each static list representing a generation of data from which a PagingSource will load from. With every emission to the flow, the current PagingSource will be invalidated, thereby triggering a new generation of Paged data.

Supports multiple factories and thus multiple collection on the same flow.

@VisibleForTesting
suspend fun <Value : Any> Flow<PagingData<Value>>.asSnapshot(
    onError: LoadErrorHandler = LoadErrorHandler { THROW },
    loadOperations: suspend SnapshotLoader<Value>.() -> Unit = { }
): List<Value>

Runs the SnapshotLoader load operations that are passed in and returns a List of data that would be presented to the UI after all load operations are complete.