ArgumentCaptor<Query> captor = ArgumentCaptor.forClass(Query.class);
    verify(this.mongoOperationsMock, times(2))
        .find(captor.capture(), Matchers.eq(Person.class), Matchers.eq("persons"));
    DBObject expectedSortObject = new BasicDBObjectBuilder().add("bar", -1).get();
    assertThat(captor.getAllValues().get(0).getSortObject(), is(expectedSortObject));
    assertThat(captor.getAllValues().get(1).getSortObject(), is(expectedSortObject));
  }