def test_addFieldSameName(self):
        form = data_form.Form('result')
        field1 = data_form.Field(var='test', value='value')
        field2 = data_form.Field(var='test', value='value2')
        form.addField(field1)
        self.assertRaises(data_form.Error, form.addField, field2)
Draws the inner part of the sphere (if it's of type 'M') with the percentage of 'A' and 'B' parts.
dataset/ETHPy150Open ralphm/wokkel/wokkel/test/test_data_form.py/FormTest.test_addFieldSameName--crossover with--dataset/ETHPy150Open victor-gil-sepulveda/pyProCT/pyproct/tools/plotTools.py/circledPercentages