add test marks for various backend functionality
diff --git a/tests/conftest.py b/tests/conftest.py
index 7166280..91ba988 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,5 +1,21 @@
+import pytest
+
+from cryptography.hazmat.backends.interfaces import (
+ HMACBackend, CipherBackend, HashBackend
+)
+
+from .skip_check import skip_check
+
+
def pytest_generate_tests(metafunc):
from cryptography.hazmat.backends import _ALL_BACKENDS
if "backend" in metafunc.fixturenames:
metafunc.parametrize("backend", _ALL_BACKENDS)
+
+
+@pytest.mark.trylast
+def pytest_runtest_setup(item):
+ skip_check('hmac', HMACBackend, item)
+ skip_check('cipher', CipherBackend, item)
+ skip_check('hash', HashBackend, item)