def test_grpdelay_1(self):
# Test case for FIR filter
fil = FIRDesign.fir1(self.order, self.cut)
w, gd = signal.group_delay(fil, w=512, fs=2 * np.pi)
gd = np.round(gd)
ww, gdgd = FilterSpec.grpdelay(fil)
self.assertTrue(np.all(w == ww) and np.all(gd == gdgd))
def test_grpdelay_2(self):
# Test case for IIR filter
fil = IIRDesign.butter(6, self.fc / (self.fs / 2))
w, gd = FilterSpec.grpdelay(fil)
ww, gdgd = signal.group_delay(fil, w=512, fs=2 * np.pi)
self.assertTrue(np.all(w == ww) and np.all(gd == gdgd))