def test_mech_conversions(self, flavor):
"""
Test that converting each mechanism works as expected w/ valid params.
"""
params = MECH_PARAMS[flavor]
mech = Mechanism(flavor, params=params)
cmech = mech.to_c_mech()
# Would prefer to check if it's a c_void_p, but it gets transformed directly to
# an int/long depending on memory location.
assert isinstance(cmech.pParameter, (integer_types, c_ulong))
assert isinstance(cmech.usParameterLen, (integer_types, c_ulong))
assert isinstance(cmech, CK_MECHANISM)
assert cmech.mechanism == flavor
def test_null_mechanism_indirect_instantiation(self):
"""
Test automech by instantiating Mechanism() instead of AutoMech()
:return:
"""
# Patch the mechanism lookup so that we don't have to have an undefined
# mechanism to test the automech.
with patch.dict(MECH_LOOKUP, {}, clear=True):
pymech = Mechanism(CKM_RSA_PKCS_PSS)
assert isinstance(pymech, NullMech)
cmech = pymech.to_c_mech()
assert cmech.pParameter is None
assert cmech.usParameterLen == 0