def test_isstable_2(self):
# Test case for IIR filter
fil = IIRDesign.butter(self.n, self.fc)
self.assertTrue(FilterSpec.isstable(fil) == True)
def test_isstable_1(self):
# Test case for FIR filter
fil = FIRDesign.fir1(self.order, self.cut)
self.assertTrue(FilterSpec.isstable(fil) == True)