Fix spec

Author: vidishaweddy-readytech

spec/superset/services/duplicate_dashboard_spec.rb

@@ -68,6 +68,9 @@
         expect(Superset::Chart::UpdateDataset).to receive(:new).with(chart_id: new_chart_1, target_dataset_id: new_dataset_1).and_return(double(perform: true))
         expect(Superset::Chart::UpdateDataset).to receive(:new).with(chart_id: new_chart_2, target_dataset_id: new_dataset_2).and_return(double(perform: true))
 
+        # get json metadata
+        expect(Superset::Dashboard::Get).to receive(:new).with(new_dashboard_id).and_return(double(json_metadata: json_metadata))
+
         # update dashboard json metadata
         expect(Superset::Dashboard::Put).to receive(:new).twice.with(target_dashboard_id: new_dashboard_id, params: { 'json_metadata' => new_json_metadata.to_json }).and_return(double(perform: true))
       end