def test_write_cell_formula01(self):

        cell_tuple = namedtuple('Formula', 'formula, format, value')
        cell = cell_tuple('A3+A5', None, 0)

        self.worksheet._write_cell(1, 2, cell)

        exp = """<c r="C2"><f>A3+A5</f><v>0</v></c>"""
        got = self.fh.getvalue()

        self.assertEqual(got, exp)
Test the _write_cell() method for formulas.
dataset/ETHPy150Open jmcnamara/XlsxWriter/xlsxwriter/test/worksheet/test_write_cell.py/TestWriteCell.test_write_cell_formula01