grails - 测试 grails Controller 抛出 java.NullPointerException

Question

下一个测试因 java.NullPointerException 而失败

package org.ttm

import grails.test.mixin.TestFor
import spock.lang.Specification

@TestFor(ActorController)
class ActorControllerSpec extends Specification {
    StageDataService stageDataService = Mock()

    void setup() {
        controller.stageDataService = stageDataService
    }

    void 'index returns list of stages'() {
        Long id = 20

        when:
        controller.index(id)

        then:
        1 * stageDataService.getActors(id)
    }
}

这里有什么问题吗？

这是 StackTrace:

'2014-04-10 22:22:31,471 [main] ERROR StackTrace  - Full Stack Trace:
'java.lang.NullPointerException
    at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:128)
    at org.codehaus.groovy.grails.orm.support.GrailsTransactionTemplate.execute(GrailsTransactionTemplate.groovy:57)
    at org.ttm.ActorControllerSpec.index returns list of stages(ActorControllerSpec.groovy:18)
'2014-04-10 22:22:31,472 [main] ERROR StackTrace  - Full Stack Trace:
'java.lang.NullPointerException
    at org.ttm.ActorControllerSpec.index returns list of stages(ActorControllerSpec.groovy:18)
'2014-04-10 22:22:31,473 [main] ERROR StackTrace  - Full Stack Trace:
'java.lang.NullPointerException
    at org.ttm.ActorControllerSpec.index returns list of stages(ActorControllerSpec.groovy:18)
'2014-04-10 22:22:31,473 [main] ERROR StackTrace  - Full Stack Trace:
'java.lang.NullPointerException
    at org.ttm.ActorControllerSpec.index returns list of stages(ActorControllerSpec.groovy:18)
'2014-04-10 22:22:31,474 [main] ERROR StackTrace  - Full Stack Trace:
'java.lang.NullPointerException
    at org.ttm.ActorControllerSpec.index returns list of stages(ActorControllerSpec.groovy:18)
'2014-04-10 22:22:31,474 [main] ERROR StackTrace  - Full Stack Trace:
'java.lang.NullPointerException
    at org.ttm.ActorControllerSpec.index returns list of stages(ActorControllerSpec.groovy:18)
'2014-04-10 22:22:45,664 [main] ERROR StackTrace  - Full Stack Trace:

好的，我认为这可能是问题所在:http://jira.grails.org/browse/GRAILS-10538 .我的 Controller 装饰有 grails.transaction.Transactional 标签。解决方法是使用 @Mock 标签模拟一个类。 Holly Molly Bugs。

Answer 1

很难说没有堆栈跟踪或任何东西，但是 1 * StageDataService.getActors(id)绝对应该是 1 * stageDataService.getActors(id) .