def METHOD_NAME(self):
    data = ["aknakka;demoA;3;demoB;2", "vesal;demoB;4;demoA;9", "hopohessu;demoC;5"]
    fields = ["demoA = d1", "demoB=d2", "*"]
    e1 = ["aknakka;d1;3;d2;2", "vesal;d2;4;d1;9", "hopohessu;demoC;5"]
    r1 = conv_data_field_names(data, fields, ";").to_tim_format()
    self.assertEqual(e1, r1, "Not same in * case")