Fixed issue saving tasks.

The Eve hook that added 'parent_info' caused this issue, as the validation
fails when saving a document that contains this. The easiest fix was to
prefix it with an underscore, so that the SDK automatically strips it
before saving.

tests/test_tasks.py

@@ -4,11 +4,13 @@ import responses
 from bson import ObjectId
 
 import pillarsdk
+import pillar.api.utils
 import pillar.tests
 import pillar.auth
 import pillar.tests.common_test_data as ctd
 
 from abstract_attract_test import AbstractAttractTest
+from pillarsdk.utils import remove_private_keys
 
 
 class TaskWorkflowTest(AbstractAttractTest):
@@ -20,13 +22,13 @@ class TaskWorkflowTest(AbstractAttractTest):
 
         self.sdk_project = pillarsdk.Project(pillar.tests.mongo_to_sdk(self.project))
 
-    def create_task(self, task_type=None):
+    def create_task(self, task_type=None, parent=None):
         with self.app.test_request_context():
             # Log in as project admin user
             pillar.auth.login_user(ctd.EXAMPLE_PROJECT_OWNER_ID)
 
             self.mock_blenderid_validate_happy()
-            task = self.mngr.create_task(self.sdk_project, task_type=task_type)
+            task = self.mngr.create_task(self.sdk_project, task_type=task_type, parent=parent)
 
         self.assertIsInstance(task, pillarsdk.Node)
         return task
@@ -71,3 +73,22 @@ class TaskWorkflowTest(AbstractAttractTest):
             self.assertEqual(u'todo', found['properties']['status'])
             self.assertEqual(u'nööw name', found['name'])
             self.assertEqual(u'€ ≠ ¥', found['description'])
+
+    @responses.activate
+    def test_load_save_task(self):
+        """Test for the Eve hooks -- we should be able to PUT what we GET."""
+
+        task_parent = self.create_task(task_type=u'Just düüüh it')
+        task_child = self.create_task(task_type=u'mamaaaah',
+                                      parent=task_parent['_id'])
+
+        self.create_valid_auth_token(ctd.EXAMPLE_PROJECT_OWNER_ID, 'token')
+
+        url = '/api/nodes/%s' % task_child['_id']
+        resp = self.get(url)
+        json_task = resp.json()
+
+        self.put(url,
+                 json=remove_private_keys(json_task),
+                 auth_token='token',
+                 headers={'If-Match': json_task['_etag']})