How do I create a PagedList of an object for tests?

Question

I have been working with the arch libraries from Google, but one thing that has made testing difficult is working with PagedList.

For this example, I am usi

Answer 1

an easy way to achieve this, is to mock the PagedList. This fun will "convert" a list to a PagedList (in this case, we are not using the real PagedList rather just a mocked version, if you need other methods of PagedList to be implemented, add them in this fun)

 fun  mockPagedList(list: List): PagedList {
     val pagedList = Mockito.mock(PagedList::class.java) as PagedList
     Mockito.`when`(pagedList.get(ArgumentMatchers.anyInt())).then { invocation ->
        val index = invocation.arguments.first() as Int
        list[index]
     }
     Mockito.`when`(pagedList.size).thenReturn(list.size)
     return pagedList
 }