when(mockMediator.getTileLayersForStyle(eq(STYLE_NAME))).thenReturn(
Collections.singletonList(mockTileLayer));
listener = new CatalogStyleChangeListener(mockMediator);
styleNameModifyEvent = new CatalogModifyEventImpl();
styleNameModifyEvent.setSource(mockStyle);
styleNameModifyEvent.setPropertyNames(Arrays.asList("name"));
styleNameModifyEvent.setOldValues(Arrays.asList(STYLE_NAME));
styleNameModifyEvent.setNewValues(Arrays.asList(STYLE_NAME_MODIFIED));
}