add test marks to fernet so backends without cipher (or AES/CBC) will skip
diff --git a/tests/test_fernet.py b/tests/test_fernet.py
index 45188c4..bd4d90a 100644
--- a/tests/test_fernet.py
+++ b/tests/test_fernet.py
@@ -25,6 +25,7 @@
from cryptography.fernet import Fernet, InvalidToken
from cryptography.hazmat.backends import default_backend
+from cryptography.hazmat.primitives.ciphers import algorithms, modes
def json_parametrize(keys, fname):
@@ -37,7 +38,14 @@
])
+@pytest.mark.cipher
class TestFernet(object):
+ @pytest.mark.supported(
+ only_if=lambda backend: backend.cipher_supported(
+ algorithms.AES("\x00" * 32), modes.CBC("\x00" * 16)
+ ),
+ skip_message="Does not support AES CBC",
+ )
@json_parametrize(
("secret", "now", "iv", "src", "token"), "generate.json",
)
@@ -50,6 +58,12 @@
)
assert actual_token == token.encode("ascii")
+ @pytest.mark.supported(
+ only_if=lambda backend: backend.cipher_supported(
+ algorithms.AES("\x00" * 32), modes.CBC("\x00" * 16)
+ ),
+ skip_message="Does not support AES CBC",
+ )
@json_parametrize(
("secret", "now", "src", "ttl_sec", "token"), "verify.json",
)
@@ -61,6 +75,12 @@
payload = f.decrypt(token.encode("ascii"), ttl=ttl_sec)
assert payload == src.encode("ascii")
+ @pytest.mark.supported(
+ only_if=lambda backend: backend.cipher_supported(
+ algorithms.AES("\x00" * 32), modes.CBC("\x00" * 16)
+ ),
+ skip_message="Does not support AES CBC",
+ )
@json_parametrize(("secret", "token", "now", "ttl_sec"), "invalid.json")
def test_invalid(self, secret, token, now, ttl_sec, backend, monkeypatch):
f = Fernet(secret.encode("ascii"), backend=backend)
@@ -69,16 +89,34 @@
with pytest.raises(InvalidToken):
f.decrypt(token.encode("ascii"), ttl=ttl_sec)
+ @pytest.mark.supported(
+ only_if=lambda backend: backend.cipher_supported(
+ algorithms.AES("\x00" * 32), modes.CBC("\x00" * 16)
+ ),
+ skip_message="Does not support AES CBC",
+ )
def test_invalid_start_byte(self, backend):
f = Fernet(Fernet.generate_key(), backend=backend)
with pytest.raises(InvalidToken):
f.decrypt(base64.urlsafe_b64encode(b"\x81"))
+ @pytest.mark.supported(
+ only_if=lambda backend: backend.cipher_supported(
+ algorithms.AES("\x00" * 32), modes.CBC("\x00" * 16)
+ ),
+ skip_message="Does not support AES CBC",
+ )
def test_timestamp_too_short(self, backend):
f = Fernet(Fernet.generate_key(), backend=backend)
with pytest.raises(InvalidToken):
f.decrypt(base64.urlsafe_b64encode(b"\x80abc"))
+ @pytest.mark.supported(
+ only_if=lambda backend: backend.cipher_supported(
+ algorithms.AES("\x00" * 32), modes.CBC("\x00" * 16)
+ ),
+ skip_message="Does not support AES CBC",
+ )
def test_unicode(self, backend):
f = Fernet(base64.urlsafe_b64encode(b"\x00" * 32), backend=backend)
with pytest.raises(TypeError):
@@ -86,6 +124,12 @@
with pytest.raises(TypeError):
f.decrypt(six.u(""))
+ @pytest.mark.supported(
+ only_if=lambda backend: backend.cipher_supported(
+ algorithms.AES("\x00" * 32), modes.CBC("\x00" * 16)
+ ),
+ skip_message="Does not support AES CBC",
+ )
@pytest.mark.parametrize("message", [b"", b"Abc!", b"\x00\xFF\x00\x80"])
def test_roundtrips(self, message, backend):
f = Fernet(Fernet.generate_key(), backend=backend)
@@ -95,6 +139,12 @@
f = Fernet(Fernet.generate_key())
assert f._backend is default_backend()
+ @pytest.mark.supported(
+ only_if=lambda backend: backend.cipher_supported(
+ algorithms.AES("\x00" * 32), modes.CBC("\x00" * 16)
+ ),
+ skip_message="Does not support AES CBC",
+ )
def test_bad_key(self, backend):
with pytest.raises(ValueError):
Fernet(base64.urlsafe_b64encode(b"abc"), backend=backend)