2 files changed, 37 insertions, 0 deletions
diff --git a/tests/hazmat/backends/test_multibackend.py b/tests/hazmat/backends/test_multibackend.py
index 3c05cdfa..d516af16 100644
--- a/tests/hazmat/backends/test_multibackend.py
+++ b/tests/hazmat/backends/test_multibackend.py
@@ -206,6 +206,9 @@ class DummyX509Backend(object):
     def create_x509_csr(self, builder, private_key, algorithm):
         pass
 
+    def sign_x509_certificate(self, builder, private_key, algorithm):
+        pass
+
 
 class TestMultiBackend(object):
     def test_ciphers(self):
@@ -484,6 +487,7 @@ class TestMultiBackend(object):
         backend.load_pem_x509_csr(b"reqdata")
         backend.load_der_x509_csr(b"reqdata")
         backend.create_x509_csr(object(), b"privatekey", hashes.SHA1())
+        backend.sign_x509_certificate(object(), b"privatekey", hashes.SHA1())
 
         backend = MultiBackend([])
         with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_X509):
@@ -496,3 +500,7 @@ class TestMultiBackend(object):
             backend.load_der_x509_csr(b"reqdata")
         with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_X509):
             backend.create_x509_csr(object(), b"privatekey", hashes.SHA1())
+        with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_X509):
+            backend.sign_x509_certificate(
+                object(), b"privatekey", hashes.SHA1()
+            )
diff --git a/tests/hazmat/backends/test_openssl.py b/tests/hazmat/backends/test_openssl.py
index 040e3677..c2a4f544 100644
--- a/tests/hazmat/backends/test_openssl.py
+++ b/tests/hazmat/backends/test_openssl.py
@@ -4,6 +4,7 @@
 
 from __future__ import absolute_import, division, print_function
 
+import datetime
 import os
 import subprocess
 import sys
@@ -14,6 +15,7 @@ import pretend
 import pytest
 
 from cryptography import utils
+from cryptography import x509
 from cryptography.exceptions import InternalError, _Reasons
 from cryptography.hazmat.backends.interfaces import RSABackend
 from cryptography.hazmat.backends.openssl.backend import (
@@ -505,6 +507,33 @@ class TestOpenSSLCreateX509CSR(object):
             backend.create_x509_csr(object(), private_key, hashes.SHA1())
 
 
+class TestOpenSSLSignX509Certificate(object):
+    def test_requires_certificate_builder(self):
+        private_key = RSA_KEY_2048.private_key(backend)
+
+        with pytest.raises(TypeError):
+            backend.sign_x509_certificate(object(), private_key, DummyHash())
+
+    def test_checks_for_unsupported_extensions(self):
+        private_key = RSA_KEY_2048.private_key(backend)
+        builder = x509.CertificateBuilder().subject_name(x509.Name([
+            x509.NameAttribute(x509.OID_COUNTRY_NAME, u'US'),
+        ])).public_key(
+            private_key.public_key()
+        ).serial_number(
+            777
+        ).not_valid_before(
+            datetime.datetime(1999, 1, 1)
+        ).not_valid_after(
+            datetime.datetime(2020, 1, 1)
+        ).add_extension(
+            x509.InhibitAnyPolicy(0), False
+        )
+
+        with pytest.raises(NotImplementedError):
+            builder.sign(backend, private_key, hashes.SHA1())
+
+
 class TestOpenSSLSerialisationWithOpenSSL(object):
     def test_pem_password_cb_buffer_too_small(self):
         ffi_cb, cb = backend._pem_password_cb(b"aa")