1 files changed, 57 insertions, 0 deletions
diff --git a/tests/test_x509_ext.py b/tests/test_x509_ext.py
new file mode 100644
index 00000000..74d14c57
--- /dev/null
+++ b/tests/test_x509_ext.py
@@ -0,0 +1,57 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import pytest
+
+from cryptography import x509
+
+
+class TestExtension(object):
+    def test_not_an_oid(self):
+        bc = x509.BasicConstraints(ca=False, path_length=None)
+        with pytest.raises(TypeError):
+            x509.Extension("notanoid", True, bc)
+
+    def test_critical_not_a_bool(self):
+        bc = x509.BasicConstraints(ca=False, path_length=None)
+        with pytest.raises(TypeError):
+            x509.Extension(x509.OID_BASIC_CONSTRAINTS, "notabool", bc)
+
+    def test_repr(self):
+        bc = x509.BasicConstraints(ca=False, path_length=None)
+        ext = x509.Extension(x509.OID_BASIC_CONSTRAINTS, True, bc)
+        assert repr(ext) == (
+            "<Extension(oid=<ObjectIdentifier(oid=2.5.29.19, name=basicConst"
+            "raints)>, critical=True, value=<BasicConstraints(ca=False, path"
+            "_length=None)>)>"
+        )
+
+
+class TestBasicConstraints(object):
+    def test_ca_not_boolean(self):
+        with pytest.raises(TypeError):
+            x509.BasicConstraints(ca="notbool", path_length=None)
+
+    def test_path_length_not_ca(self):
+        with pytest.raises(ValueError):
+            x509.BasicConstraints(ca=False, path_length=0)
+
+    def test_path_length_not_int(self):
+        with pytest.raises(TypeError):
+            x509.BasicConstraints(ca=True, path_length=1.1)
+
+        with pytest.raises(TypeError):
+            x509.BasicConstraints(ca=True, path_length="notint")
+
+    def test_path_length_negative(self):
+        with pytest.raises(TypeError):
+            x509.BasicConstraints(ca=True, path_length=-1)
+
+    def test_repr(self):
+        na = x509.BasicConstraints(ca=True, path_length=None)
+        assert repr(na) == (
+            "<BasicConstraints(ca=True, path_length=None)>"
+        )