def initialization_test(self):
        HoltWintersMethod(0.2, 0.3, 0.4, 5)

        for alpha in [-0.1, 0.81, 1.1]:
            for beta in [-1.4, 0.12, 3.2]:
                for gamma in [-0.05, 1.3]:
                    try:
                        HoltWintersMethod(alpha, beta, gamma)
                    except ValueError:
                        pass
                    else:
                        assert False    # pragma: no cover
Test the initialization of the HoltWintersMethod method.
dataset/ETHPy150Open T-002/pycast/pycast/tests/methodtest.py/HoltWintersMethodTest.initialization_test