Add ability to query groups (#764)

* add ability to query groups

* add  a test for group

Author: artbycrunk

jira/client.py

@@ -78,6 +78,7 @@ def emit(self, record):
 from jira.resources import Status
 from jira.resources import StatusCategory
 from jira.resources import User
+from jira.resources import Group
 from jira.resources import Version
 from jira.resources import Votes
 from jira.resources import Watchers
@@ -1104,7 +1105,24 @@ def update_filter(self, filter_id,
         raw_filter_json = json.loads(r.text)
         return Filter(self._options, self._session, raw=raw_filter_json)
 
-# Groups
+    # Groups
+
+    def group(self, id, expand=None):
+        """Get a group Resource from the server.
+
+        :param id: ID of the group to get
+        :param id: str
+        :param expand: Extra information to fetch inside each resource
+        :type expand: Optional[Any]
+
+        :rtype: User
+        """
+        group = Group(self._options, self._session)
+        params = {}
+        if expand is not None:
+            params['expand'] = expand
+        group.find(id, params=params)
+        return group
 
     # non-resource
     def groups(self, query=None, exclude=None, maxResults=9999):

tests/tests.py

@@ -662,6 +662,10 @@ def setUp(self):
         self.test_manager = JiraTestManager()
         self.jira = self.test_manager.jira_admin
 
+    def test_group(self):
+        group = self.jira.group('jira-users')
+        self.assertEqual(group.name, 'jira-users')
+
     def test_groups(self):
         groups = self.jira.groups()
         self.assertGreater(len(groups), 0)