make the Extensions class support indexing
diff --git a/src/cryptography/x509/extensions.py b/src/cryptography/x509/extensions.py
index 15feb71..7ec653d 100644
--- a/src/cryptography/x509/extensions.py
+++ b/src/cryptography/x509/extensions.py
@@ -102,6 +102,9 @@
def __len__(self):
return len(self._extensions)
+ def __getitem__(self, idx):
+ return self._extensions[idx]
+
def __repr__(self):
return (
"<Extensions({0})>".format(self._extensions)
diff --git a/tests/test_x509_ext.py b/tests/test_x509_ext.py
index d9743c8..1144d47 100644
--- a/tests/test_x509_ext.py
+++ b/tests/test_x509_ext.py
@@ -858,6 +858,18 @@
exts.get_extension_for_class(x509.IssuerAlternativeName)
assert exc.value.oid == ExtensionOID.ISSUER_ALTERNATIVE_NAME
+ def test_indexing(self, backend):
+ cert = _load_cert(
+ os.path.join("x509", "cryptography.io.pem"),
+ x509.load_pem_x509_certificate,
+ backend
+ )
+ exts = cert.extensions
+ assert exts[-1] == exts[7]
+ assert len(exts[3:5]) == 2
+ assert exts[2:4][0] == exts[2]
+ assert exts[2:4][1] == exts[3]
+
def test_one_extension_get_for_class(self, backend):
cert = _load_cert(
os.path.join(