def test_add_one_with_thumbnail_filename(self): """Add a Cultivar with a Thumbnail Filename to worksheet.""" wb = Workbook() ws = wb.active cvws = CultivarsWorksheet(ws) cvws.setup() cv = Cultivar(name='Foxy') cv.common_name = CommonName(name='Foxglove') cv.common_name.index = Index(name='Perennial') cv.thumbnail = Image(filename='foo.jpg') cvws.add_one(cv) assert cvws.cell(2, cvws.cols['Thumbnail Filename']).value == 'foo.jpg'