unit-testing - Grails单元测试模拟服务返回无效对象

Question

我正在为此Grails服务创建单元测试:

class CommonCodeService {

    def gridUtilService

    def getList(def params){
        def ret = null

        try {
            def res = gridUtilService.getDomainList(CommonCode, params)
            def rows = []
            def counter = 0
            res?.rows?.each{ // this is line 15
                rows << [
                        id: counter ++,
                        cell:[

                            it.key,  
                            it.value  
                        ]
                ]
            }

            ret = [rows: rows, totalRecords: res.totalRecords, page: params.page, totalPage: res.totalPage]

        } catch (e) {
            e.printStackTrace()
            throw e
        }

        return ret
    }

}

这是协作者GridUtilService的一种方法:

import grails.converters.JSON

class GridUtilService {

    def getDomainList(Class domain, def params){
        /* some code */
        return [rows: rows, totalRecords: totalRecords, page: params.page, totalPage: totalPage]
    }
}

这是我(不起作用)的单元测试:

import grails.test.mixin.TestFor
import grails.test.mixin.Mock
import com.emerio.baseapp.utils.GridUtilService

@TestFor(CommonCodeService)
@Mock([CommonCode,GridUtilService])
class CommonCodeServiceTests {

    void testGetList() {
        def rowList = [new CommonCode(key: 'value', value: 'value')]
        def serviceStub = mockFor(GridUtilService)
        serviceStub.demand.getDomainList {Map p -> [rows: rowList, totalRecords: rowList.size(), page:1, totalPage: 1]}
        service.gridUtilService = serviceStub.createMock()
        service.getList() // this is line 16
    }

}

当我运行测试时，它显示异常:

No such property: rows for class: com.emerio.baseapp.CommonCodeServiceTests
groovy.lang.MissingPropertyException: No such property: rows for class: com.emerio.baseapp.CommonCodeServiceTests
    at com.emerio.baseapp.CommonCodeService.getList(CommonCodeService.groovy:15)
    at com.emerio.baseapp.CommonCodeServiceTests.testGetList(CommonCodeServiceTests.groovy:16)

似乎模拟的GridUtilService返回CommonCodeServiceTests实例而不是Map。我的单元测试有什么问题？

Answer 1

看来您需要为模拟的getDomainList()调用修复方法参数。您将其作为Map m，但可能需要为Class c, Map m。

从docs，

The closure arguments must match the number and types of the mocked method, but otherwise you are free to add whatever you want in the body.

为什么错过参数的行为方式是一个绊脚石。我可以使用自己的精简类来复制您的问题。我还发现，发生参数缺失时，调用该方法所返回的类型是测试类的关闭，至少就我的简单情况而言，可以将其作为.call()以获得所需的(模拟的)结果。我不确定这种行为是否支持某种功能或是否有错误。这肯定令人困惑。