GCE: add unit tests, user-data support and few other fixes

1 files changed, 112 insertions, 0 deletions

diff --git a/tests/unittests/test_datasource/test_gce.py b/tests/unittests/test_datasource/test_gce.py
new file mode 100644
index 00000000..0c58be52
--- /dev/null
+++ b/tests/unittests/test_datasource/test_gce.py
@@ -0,0 +1,112 @@
+#
+#    Copyright (C) 2014 Vaidas Jablonskis
+#
+#    Author: Vaidas Jablonskis <jablonskis@gmail.com>
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License version 3, as
+#    published by the Free Software Foundation.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import unittest
+import httpretty
+import re
+
+from urlparse import urlparse
+
+from cloudinit import settings
+from cloudinit import helpers
+from cloudinit.sources import DataSourceGCE
+
+GCE_META = {
+    'instance/id': '123',
+    'instance/zone': 'foo/bar',
+    'project/attributes/sshKeys': 'user:ssh-rsa AA2..+aRD0fyVw== root@server',
+    'instance/hostname': 'server.project-name.local',
+    'instance/attributes/user-data': '/bin/echo foo\n',
+}
+
+GCE_META_PARTIAL = {
+    'instance/id': '123',
+    'instance/hostname': 'server.project-name.local',
+}
+
+HEADERS = {'X-Google-Metadata-Request': 'True'}
+MD_URL_RE = re.compile(r'http://169.254.169.254/computeMetadata/v1/.*')
+
+
+def _request_callback(method, uri, headers):
+    url_path = urlparse(uri).path
+    if url_path.startswith('/computeMetadata/v1/'):
+        path = url_path.split('/computeMetadata/v1/')[1:][0]
+    else:
+        path = None
+    if path in GCE_META:
+        #return (200, headers, GCE_META.get(path))
+        return (200, headers, GCE_META.get(path))
+    else:
+        return (404, headers, '')
+
+
+class TestDataSourceGCE(unittest.TestCase):
+
+    def setUp(self):
+        self.ds = DataSourceGCE.DataSourceGCE(
+            settings.CFG_BUILTIN, None,
+            helpers.Paths({}))
+
+    @httpretty.activate
+    def test_connection(self):
+        httpretty.register_uri(
+            httpretty.GET, MD_URL_RE,
+            body=_request_callback)
+
+        success = self.ds.get_data()
+        self.assertTrue(success)
+
+        req_header = httpretty.last_request().headers
+        self.assertDictContainsSubset(HEADERS, req_header)
+
+    @httpretty.activate
+    def test_metadata(self):
+        httpretty.register_uri(
+            httpretty.GET, MD_URL_RE,
+            body=_request_callback)
+        self.ds.get_data()
+
+        self.assertEqual(GCE_META.get('instance/hostname'),
+                         self.ds.get_hostname())
+
+        self.assertEqual(GCE_META.get('instance/id'),
+                         self.ds.get_instance_id())
+
+        self.assertEqual(GCE_META.get('instance/zone'),
+                         self.ds.availability_zone)
+
+        self.assertEqual(GCE_META.get('instance/attributes/user-data'),
+                         self.ds.get_userdata_raw())
+
+        # we expect a list of public ssh keys with user names stripped
+        self.assertEqual(['ssh-rsa AA2..+aRD0fyVw== root@server'],
+                         self.ds.get_public_ssh_keys())
+
+    # test partial metadata (missing user-data in particular)
+    @httpretty.activate
+    def test_metadata_partial(self):
+        httpretty.register_uri(
+            httpretty.GET, MD_URL_RE,
+            body=_request_callback)
+        self.ds.get_data()
+
+        self.assertEqual(GCE_META_PARTIAL.get('instance/id'),
+                         self.ds.get_instance_id())
+
+        self.assertEqual(GCE_META_PARTIAL.get('instance/hostname'),
+                         self.ds.get_hostname())