Adding ability to unset fields with update calls

Adding a sentinel object that will be used as a default
value in update methods. This object will allow to
distinguish whether a field should be unset or should
not be updated.

Change-Id: Ie6679c8f64623e8570176b8009380b08de2be6a5
Closes-bug: #1534050

1 files changed, 18 insertions, 0 deletions

diff --git a/saharaclient/tests/unit/test_jobs.py b/saharaclient/tests/unit/test_jobs.py
index 39acb7c..b5e2ec2 100644
--- a/saharaclient/tests/unit/test_jobs.py
+++ b/saharaclient/tests/unit/test_jobs.py
@@ -96,6 +96,7 @@ class JobTest(base.BaseTestCase):
 
         self.responses.patch(url, status_code=202, json=update_body)
 
+        # check that all parameters will be updated
         resp = self.client.jobs.update('id', name='new_name',
                                        description='description')
 
@@ -103,3 +104,20 @@ class JobTest(base.BaseTestCase):
         self.assertIsInstance(resp, jobs.Job)
         self.assertEqual(update_body,
                          json.loads(self.responses.last_request.body))
+
+        # check that parameters will not be updated
+        self.client.jobs.update("id")
+        self.assertEqual(url, self.responses.last_request.url)
+        self.assertEqual({},
+                         json.loads(self.responses.last_request.body))
+
+        # check that all parameters will be unset
+        unset_json = {
+            "name": None, "description": None, "is_public": None,
+            "is_protected": None
+        }
+
+        self.client.jobs.update("id", **unset_json)
+        self.assertEqual(url, self.responses.last_request.url)
+        self.assertEqual(unset_json,
+                         json.loads(self.responses.last_request.body))