def METHOD_NAME(self):
    s1 = ["d(1,3)"]
    e1 = "{#d1 header: 'd1'#}{#d2 header: 'd2'#}{#d3 header: 'd3'#}"
    r1 = genfields(s1, "", "header")
    self.assertEqual(e1, r1, "Not same in 3 field header case")