when(mock.getType()).thenReturn(type);
        assertEquals(type, mock.getType());
    }

    @Test
    @DisplayName("Interaction verification with mock")
    void interactionVerification() {
        FileEntry mock = mock(FileEntry.class);
        when(mock.length()).thenReturn(42L);
        long len = mock.length();
        assertEquals(42L, len);
        verify(mock, times(1)).length();