def test_conditional_formatting_addDxfStyle(self):
cf = ConditionalFormatting()
fill = Fill()
fill.start_color.index = 'FFEE1111'
fill.end_color.index = 'FFEE1111'
fill.fill_type = Fill.FILL_SOLID
font = Font()
font.name = 'Arial'
font.size = 12
font.bold = True
font.underline = Font.UNDERLINE_SINGLE
borders = Borders()
borders.top.border_style = Border.BORDER_THIN
borders.top.color.index = Color.DARKYELLOW
borders.bottom.border_style = Border.BORDER_THIN
borders.bottom.color.index = Color.BLACK
dxfId = cf.addDxfStyle(self.workbook, font, borders, fill)
assert dxfId == 0
dxfId = cf.addDxfStyle(self.workbook, None, None, fill)
assert dxfId == 1
assert len(self.workbook.style_properties['dxf_list']) == 2
