def METHOD_NAME(forms):
    b = forms[2]
    integrals = b.integrals_by_type("cell")
    integrand = integrals[0].integrand()
    element1 = FiniteElement("CG", triangle, 1)
    element2 = FiniteElement("CG", triangle, 1)
    v = TestFunction(element1)
    u = TrialFunction(element2)
    a = u * v * dx
    assert extract_elements(a) == (element1, element2)
    assert extract_unique_elements(a) == (element1,)