无法在测试类中模拟 BeanPropertyRowMapper 类

Question

无法在测试类中模拟 BeanPropertyRowMapper 数据。尝试了不同的场景。有人可以帮我解决这个问题吗？

它返回空 dtoResposne 对象，但它返回 dto 对象中的数据。当我们将 dto 与 dtoResponse 进行比较时，这里的断言失败了。

下面的代码是相关的 DaoImpl 类

public Dto getViewData(String requestId, List<String> errorLsist) {
    String sql = "SELECT * FROM table WHERE id = ?";
        return (Dto) getJdbcTemplate().queryForObject(sql, new Object[] { requestId },
                new BeanPropertyRowMapper(Dto.class));
}

Below code is related to test class 

        String sql = "SELECT * FROM dom.deployment WHERE request_id = ?";
        List<Dto> data = new ArrayList<>();
        Dto dto = new Dto();
        dto.setDecisionFlowGuid(guid);
        data.add(dto);
    Mockito.when(jdbcTemplate.query(
                "SELECT * FROM dom.deployment WHERE request_id = " + requestId,
                new BeanPropertyRowMapper<>(Dto.class))).thenReturn(data);
        Dto dtoResponse = deploymentDaoUtilImpl.getViewData(requestId, errors);
        assertEquals(dto, dtoResponse);

Tried with below scenarios as well.

    Mockito.when((Dto) jdbcTemplate.queryForObject(sql, new Object[] { requestId },
                new BeanPropertyRowMapper<Dto>(Dto.class))).thenReturn(dto);

        Mockito.when((Dto) jdbcTemplate.query(sql, new BeanPropertyRowMapper<>(Dto.class)))
                .thenReturn(dto);

Answer 1

“jdbcTemplate”必须首先创建为 Mock（即 Mockito.mock），然后将 mock 作为调用方的依赖项注入。

然后你的 Mockito.when 下面需要包装你试图模拟的 object 并且函数紧随其后。在线查看示例/文档中的语法。

   Mockito.when(jdbcTemplate.query(
                "SELECT * FROM dom.deployment WHERE request_id = " + requestId,
                new BeanPropertyRowMapper<>(Dto.class))).

Answer 2

以下代码解决了问题

BeanPropertyRowMapper mapper = new BeanPropertyRowMapper((Dto.class));
    Mockito.when(jdbcTemplate.queryForObject(eq(sql), eq(new Object[] { requestId }), any(BeanPropertyRowMapper.class))).thenReturn(dto);

    Dto dtoResponse = deploymentDaoUtilImpl.getViewData(requestId, errors);
    
    assertEquals(dto, dtoResponse);