vm: is_running property for Instances

circle/vm/models/instance.py

@@ -273,6 +273,10 @@ class Instance(AclBase, VirtualMachineDescModel, TimeStampedModel):
         return " ".join([s for s in parts if s != ""])
 
     @property
+    def is_running(self):
+        return self.state == 'RUNNING'
+
+    @property
     def state(self):
         """State of the virtual machine instance.
         """

circle/vm/tests/test_models.py

 from django.test import TestCase
+from mock import Mock
 
 from ..models.common import (
     Lease
@@ -32,6 +33,13 @@ class TemplateTestCase(TestCase):
         # TODO add images & net
 
 
+class InstanceTestCase(TestCase):
+
+    def test_is_running(self):
+        inst = Mock(state='RUNNING')
+        assert Instance.is_running.getter(inst)
+
+
 class InterfaceTestCase(TestCase):
 
     def test_interface_create(self):