2 files changed, 40 insertions, 0 deletions
diff --git a/cloudinit/tests/__init__.py b/cloudinit/tests/__init__.py
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/cloudinit/tests/__init__.py
diff --git a/cloudinit/tests/test_url_helper.py b/cloudinit/tests/test_url_helper.py
new file mode 100644
index 00000000..349110d9
--- /dev/null
+++ b/cloudinit/tests/test_url_helper.py
@@ -0,0 +1,40 @@
+# This file is part of cloud-init. See LICENSE file for license information.
+
+from cloudinit.url_helper import oauth_headers
+from tests.unittests.helpers import CiTestCase, mock, skipIf
+
+
+try:
+    import oauthlib
+    assert oauthlib  # avoid pyflakes error F401: import unused
+    _missing_oauthlib_dep = False
+except ImportError:
+    _missing_oauthlib_dep = True
+
+
+class TestOAuthHeaders(CiTestCase):
+
+    def test_oauth_headers_raises_not_implemented_when_oathlib_missing(self):
+        """oauth_headers raises a NotImplemented error when oauth absent."""
+        with mock.patch.dict('sys.modules', {'oauthlib': None}):
+            with self.assertRaises(NotImplementedError) as context_manager:
+                oauth_headers(1, 2, 3, 4, 5)
+        self.assertEqual(
+            'oauth support is not available',
+            str(context_manager.exception))
+
+    @skipIf(_missing_oauthlib_dep, "No python-oauthlib dependency")
+    @mock.patch('oauthlib.oauth1.Client')
+    def test_oauth_headers_calls_oathlibclient_when_available(self, m_client):
+        """oauth_headers calls oaut1.hClient.sign with the provided url."""
+        class fakeclient(object):
+            def sign(self, url):
+                # The first and 3rd item of the client.sign tuple are ignored
+                return ('junk', url, 'junk2')
+
+        m_client.return_value = fakeclient()
+
+        return_value = oauth_headers(
+            'url', 'consumer_key', 'token_key', 'token_secret',
+            'consumer_secret')
+        self.assertEqual('url', return_value)