add x509 extensions class and basic tests (no extensions supported)
diff --git a/tests/test_x509_ext.py b/tests/test_x509_ext.py
index 74d14c5..d828152 100644
--- a/tests/test_x509_ext.py
+++ b/tests/test_x509_ext.py
@@ -4,9 +4,14 @@
from __future__ import absolute_import, division, print_function
+import os
+
import pytest
from cryptography import x509
+from cryptography.hazmat.backends.interfaces import RSABackend, X509Backend
+
+from .test_x509 import _load_cert
class TestExtension(object):
@@ -55,3 +60,55 @@
assert repr(na) == (
"<BasicConstraints(ca=True, path_length=None)>"
)
+
+
+@pytest.mark.requires_backend_interface(interface=RSABackend)
+@pytest.mark.requires_backend_interface(interface=X509Backend)
+class TestExtensions(object):
+ def test_no_extensions(self, backend):
+ cert = _load_cert(
+ os.path.join("x509", "verisign_md2_root.pem"),
+ x509.load_pem_x509_certificate,
+ backend
+ )
+ ext = cert.extensions
+ assert len(ext) == 0
+ assert list(ext) == []
+
+ def test_duplicate_extension(self, backend):
+ cert = _load_cert(
+ os.path.join(
+ "x509", "custom", "two_basic_constraints.pem"
+ ),
+ x509.load_pem_x509_certificate,
+ backend
+ )
+ with pytest.raises(x509.DuplicateExtension) as exc:
+ cert.extensions
+
+ assert exc.value.oid == x509.OID_BASIC_CONSTRAINTS
+
+ def test_unsupported_critical_extension(self, backend):
+ cert = _load_cert(
+ os.path.join(
+ "x509", "custom", "unsupported_extension_critical.pem"
+ ),
+ x509.load_pem_x509_certificate,
+ backend
+ )
+ with pytest.raises(x509.UnsupportedExtension) as exc:
+ cert.extensions
+
+ assert exc.value.oid == x509.ObjectIdentifier("1.2.3.4")
+
+ def test_unsupported_extension(self, backend):
+ # TODO: this will raise an exception when all extensions are complete
+ cert = _load_cert(
+ os.path.join(
+ "x509", "custom", "unsupported_extension.pem"
+ ),
+ x509.load_pem_x509_certificate,
+ backend
+ )
+ extensions = cert.extensions
+ assert len(extensions) == 0