@Test
public void shouldReturnAction() {

  // Should returned the one single expected message
  for (String s : sampleStrings) {
    List<Action> nodeActions = new EmptyReturnMetadataHandler(s).getActions(null, queryFrame(s));
    assertThat(nodeActions).hasSize(1);
    Action nodeAction = nodeActions.get(0);
    assertThat(nodeAction).isInstanceOf(MessageResponseAction.class);
    Message node0Message = ((MessageResponseAction) nodeAction).getMessage();
    assertThat(node0Message).isRows().hasRows(0);
  }
}