@Test
public void givenSection_whenGetHeaderPositionInAdapterWithSection_thenCallsNewClass() {

    // Given
    final int index = 10;
    when(sectionAdapter.getHeaderPosition()).thenReturn(index);
    // When
    int result = cut.getHeaderPositionInAdapter(section);
    // Then
    verify(sectionAdapter).getHeaderPosition();
    assertThat(result, is(index));
}