def METHOD_NAME(space):
    m = UnitSquareMesh(1, 1)
    V = FunctionSpace(m, space, 1)
    u = project(Constant((0.0, 1.0)), V)
    assert abs(assemble(inner(u('+'), u('+'))*dS) - sqrt(2)) < 1.0e-13
    assert abs(assemble(inner(u('-'), u('-'))*dS) - sqrt(2)) < 1.0e-13
    assert abs(assemble(inner(u('+'), u('-'))*dS) - sqrt(2)) < 1.0e-13