4afdc53218ffc1356c008ef2e4a3c4c5d4f1795e,scipy/signal/tests/test_filter_design.py,TestButtord,test_lowpass,#TestButtord#,161

Before Change

class TestButtord(TestCase):

    def test_lowpass(self):
        n, Wn = buttord(0.2, 0.3, 3, 60)
        assert_equal(n, 16)
        assert_allclose(Wn, 2.034240543183123e-01, rtol=1e-15)

    def test_highpass(self):

After Change

        b, a = butter(N, Wn, "lowpass", False)
        w, h = freqz(b, a)
        w /= np.pi
        assert_array_less(-rp - 0.1, dB(h[w <= wp]))
        assert_array_less(dB(h[ws <= w]), -rs + 0.1)

        assert_equal(N, 16)
        assert_allclose(Wn, 2.034240543183123e-01, rtol=1e-15)

Instances