@Test
public void testGetFilesListOfStringFile()
{

    assertThat( PathUtil.files( (List<String>) null, f1 ), nullValue() );
    assertThat( PathUtil.files( Collections.singletonList( f5.getAbsolutePath() ), f1 ), hasItem( f5 ) );
    assertThat( PathUtil.files( Collections.singletonList( f5.getName() ), f5.getParentFile() ), hasItem( f5 ) );
}