def test_set_signature_type_unknown(patch_build_hasher,
patch_cryptography_utils_verify_interface,
patch_cryptography_ec):
patch_cryptography_utils_verify_interface.side_effect = InterfaceNotImplemented
with pytest.raises(NotSupportedError) as excinfo:
_PrehashingAuthenticator(algorithm=MagicMock(), key=sentinel.key)
excinfo.match(r"Unsupported signing algorithm info")
def test_build_hasher(patch_set_signature_type, patch_cryptography_hashes, patch_cryptography_default_backend):
mock_algorithm = MagicMock()
test = _PrehashingAuthenticator(algorithm=mock_algorithm, key=sentinel.key)
patch_cryptography_hashes.Hash.assert_called_once_with(
mock_algorithm.signing_hash_type.return_value, backend=patch_cryptography_default_backend.return_value
)
assert test._hasher is patch_cryptography_hashes.Hash.return_value
def test_init(patch_set_signature_type, patch_build_hasher):
test = _PrehashingAuthenticator(algorithm=sentinel.algorithm, key=sentinel.key)
assert test.algorithm is sentinel.algorithm
patch_set_signature_type.assert_called_once_with()
assert test._signature_type is patch_set_signature_type.return_value
assert test.key is sentinel.key
patch_build_hasher.assert_called_once_with()
assert test._hasher is patch_build_hasher.return_value
def test_set_signature_type_elliptic_curve(
patch_build_hasher, patch_cryptography_utils_verify_interface,
patch_cryptography_ec):
mock_algorithm = MagicMock()
test = _PrehashingAuthenticator(algorithm=mock_algorithm, key=sentinel.key)
patch_cryptography_utils_verify_interface.assert_called_once_with(
patch_cryptography_ec.EllipticCurve,
mock_algorithm.signing_algorithm_info)
assert test._signature_type is patch_cryptography_ec.EllipticCurve