def METHOD_NAME(self):
    # Check that setting the optional (non-ellipse) args works.
    crs = Mercator(
        longitude_of_projection_origin=27,
        standard_parallel=157.4,
        false_easting=13,
        false_northing=12,
    )
    self.assertEqualAndKind(crs.longitude_of_projection_origin, 27.0)
    self.assertEqualAndKind(crs.standard_parallel, 157.4)
    self.assertEqualAndKind(crs.false_easting, 13.0)
    self.assertEqualAndKind(crs.false_northing, 12.0)