def test_include_constraint_equality_w_external_var(self):
        theta = MX.sym('theta')

        aop = AbstractOptimizationProblem()
        x = aop.create_variable('x', 2)

        aop.include_constraint(x + 2 == theta)
    def test_include_constraint_equality(self):
        aop = AbstractOptimizationProblem()
        x = aop.create_variable('x', 2)

        aop.include_constraint(x + 2 == 1)