What methods can be used to test the work of the Presenter in the MVP pattern?

To test the functionality of the Presenter in MVP, unit testing with mock objects for View and Model can be used. Main methods:

• Unit tests: test the logic of the Presenter by substituting stubs for View and Model, checking method calls and data processing.
• Mocking: using libraries (e.g., Mockito) to create mock versions of View and Model to verify interactions.

Example in Kotlin with Mockito:

class PresenterTest {
    private val view = mock(View::class.java)
    private val model = mock(Model::class.java)
    private val presenter = Presenter(view, model)

    @Test
    fun testLoadData() {
        `when`(model.getData()).thenReturn("data")
        presenter.loadData()
        verify(view).showData("data")
    }
}

This approach allows isolating the Presenter and testing its logic without dependency on UI and business logic.