Snapshot basic tests

test/interface/unit/test_snapshot.py

+import unittest
+
+from interface.storage.Snapshot import Snapshot
+
+
+class TestSnapshot(unittest.TestCase):
+
+    def test_fields(self):
+        snapshot = Snapshot('id', 'volume_id', 1, 'status', 'created_at')
+
+        self.assertEqual(snapshot.id, 'id')
+        self.assertEqual(snapshot.volume_id, 'volume_id')
+        self.assertEqual(snapshot.size, 1)
+        self.assertEqual(snapshot.status, 'status')
+        self.assertEqual(snapshot.created_at, 'created_at')
+
+
+if __name__ == '__main__':
+    unittest.main()