小编典典

如何测试利用条件查询(带有spock)的Grails服务?

hibernate

我正在尝试测试一种简单的服务方法。该方法主要只是返回条件查询的结果,我要 测试 该条件查询 是否返回一个结果 (取决于要查询的内容)。

问题是,我不知道如何正确纠正相应的测试。我试图通过spock来实现它,但是用任何其他测试方法进行同样的测试也失败了。

可以告诉我如何修改测试以使其适合当前任务吗?

(顺便说一句,如果可能的话,我想对其进行单元测试。)

EventService方法

public HashSet<Event> listEventsForDate(Date date, int offset, int max) {
    date.clearTime()

    def c = Event.createCriteria()
    def results = c {
        and {
            le("startDate", date+1) // starts tonight at midnight or prior?
            ge("endDate", date)     // ends today or later?
        }
        maxResults(max)
        order("startDate", "desc")
    }
    return results
}

Spock规范

package myapp

import grails.plugin.spock.*
import spock.lang.*

class EventServiceSpec extends Specification {

    def event
    def eventService = new EventService()

    def setup() {
        event = new Event()

        event.publisher = Mock(User)
        event.title     = 'et'
        event.urlTitle  = 'ut'
        event.details   = 'details'
        event.location  = 'location'
        event.startDate = new Date(2010,11,20, 9, 0)
        event.endDate   = new Date(2011, 3, 7,18, 0)
    }

    def "list the Events of a specific date"() {
        given: "An event ranging over multiple days"

        when: "I look up a date for its respective events"
        def results = eventService.listEventsForDate(searchDate, 0, 100)

        then: "The event is found or not - depending on the requested date"
        numberOfResults == results.size()

        where:
        searchDate              | numberOfResults
        new Date(2010,10,19)    | 0     // one day before startDate
        new Date(2010,10,20)    | 1     // at startDate
        new Date(2010,10,21)    | 1     // one day after startDate
        new Date(2011, 1, 1)    | 1     // someday during the event range
        new Date(2011, 3, 6)    | 1     // one day before endDate
        new Date(2011, 3, 7)    | 1     // at endDate
        new Date(2011, 3, 8)    | 0     // one day after endDate
    }
}

错误

groovy.lang.MissingMethodException: No signature of method: static myapp.Event.createCriteria() is applicable for argument types: () values: []
    at myapp.EventService.listEventsForDate(EventService.groovy:47)
    at myapp.EventServiceSpec.list the Events of a specific date(EventServiceSpec.groovy:29)

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2020-06-20

共1个答案

小编典典

您不应该使用单元测试来测试持久性-您只是在测试模拟框架。

而是将条件查询移动到域类中适当命名的方法,并使用集成测试针对数据库进行测试:

class Event {
   ...
   static Set<Event> findAllEventsByDay(Date date, int offset, int max) {
      ...
   }
}

class EventService {

   Set<Event> listEventsForDate(Date date, int offset, int max) {
      ...
      return Event.findAllEventsByDay(date, offset, max)
   }
}

如果将service方法作为包装仍然有价值(例如,如果它实现了数据库查询之上和之外的一些业务逻辑),则现在可以轻松进行单元测试,因为可以轻松模拟出静态域类方法调用:

def events = [new Event(...), new Event(...), ...]
Event.metaClass.static.findAllEventsByDay = { Date d, int offset, int max -> events }

这是适当的,因为您正在测试服务如何使用其接收的数据,并假设集成测试中涵盖了检索。

2020-06-20