def METHOD_NAME(N, a, b, dtype, dealias):
    c = coords.Coordinate('x')
    d = distributor.Distributor((c,))
    b = basis.Jacobi(c, size=N, a=a, b=b, bounds=(0, 1), dealias=dealias)
    x = b.local_grid(dealias)
    f = field.Field(dist=d, bases=(b,), dtype=dtype)
    def initialize_scalar(*args):
        x = args[0]
        return np.sin(x)
    def F(*args):
        return operators.GeneralFunction(d, f.domain, layout='g', tensorsig=f.tensorsig, dtype=dtype, func=initialize_scalar, args=args)
    f = F(x).evaluate()
    assert np.allclose(f['g'], initialize_scalar(x))