Added tests

Test for import export functions
Exam functions
Periodc clean funtions

circle/vm/tests/test_operations.py

@@ -24,6 +24,7 @@ from vm.operations import (
     DeployOperation, DestroyOperation, FlushOperation, MigrateOperation,
     RebootOperation, ResetOperation, SaveAsTemplateOperation,
     ShutdownOperation, ShutOffOperation, SleepOperation, WakeUpOperation,
+    ExportVmOperation
 )
 
 
@@ -104,3 +105,8 @@ class SleepOperationTestCase(TestCase):
 class WakeUpOperationTestCase(TestCase):
     def test_operation_registered(self):
         assert WakeUpOperation.id in getattr(Instance, op_reg_name)
+
+
+class ExportVmOperationTestCase(TestCase):
+    def test_operation_registered(self):
+        assert ExportVmOperation.id in getattr(Instance, op_reg_name)