def test_reducible_true():
IntMod.modulus = 5
p = PolyMod([IntMod(0), IntMod(1)])
assert p.is_reducible()
def test_reducible_factors():
IntMod.modulus = 5
p = PolyMod([IntMod(1), IntMod(2), IntMod(1)])
assert p.is_reducible()
def test_reducible_false():
IntMod.modulus = 5
p = PolyMod([IntMod(2), IntMod(3), IntMod(4)])
assert not p.is_reducible()
