dashboard: Unit test for set master interface

Created a Unit test. It calls set master interface operation on an interface. Assert checks the is_master attribute is True.

circle/dashboard/tests/test_views.py

@@ -29,6 +29,7 @@ from common.tests.celery_mock import MockCeleryMixin
 from dashboard.views import VmAddInterfaceView
 from vm.models import Instance, InstanceTemplate, Lease, Node, Trait
 from vm.operations import (WakeUpOperation, AddInterfaceOperation,
+                           SetMasterInterfaceOperation,
                            AddPortOperation, RemoveInterfaceOperation,
                            DeployOperation, RenameOperation)
 from ..models import Profile
@@ -182,6 +183,24 @@ class VmDetailTest(LoginMixin, MockCeleryMixin, TestCase):
         assert mock_method.called
         self.assertEqual(inst.interface_set.count(), iface_count - 1)
 
+    def test_permitted_set_master_interface(self):
+        c = Client()
+        self.login(c, "user1")
+        inst = Instance.objects.get(pk=1)
+        inst.set_level(self.u1, 'owner')
+        inst.add_interface(vlan=Vlan.objects.get(pk=1), user=self.us)
+        inst.status = 'STOPPED'
+        inst.save()
+
+        with patch.object(SetMasterInterfaceOperation, 'async') as mock_method:
+            mock_method.side_effect = inst.set_master_interface
+            response = c.post("/dashboard/vm/1/op/set_master_interface/",
+                              {'interface': 1})
+        self.assertEqual(response.status_code, 302)
+        assert mock_method.called
+        self.assertTrue(inst.interface_set.get(pk=1).is_master)
+        self.assertEqual(inst.interface_set.filter(is_master=True).count(), 1)
+
     def test_unpermitted_network_delete(self):
         c = Client()
         self.login(c, "user1")