Spock測驗中的MissingPropertyException

我對用 groovy 撰寫的測驗有問題（使用 Spock 作為框架）。當我嘗試在then塊中獲取屬性然后在互動中使用它時，我收到No such property: updatedValue for class: my.test.class.MyTestClass了與事件發布者的互動。誰能告訴這是為什么？

class MyTestClass extends Specification {


@Autowired
private MyClass sut

@Autowired
private MyClassRepository myClassRepository


@SpringBean
private EventPublisher eventPublisher = Mock()


def "Should do something"() {
    given:
    //some data
    def someId = "someId"
    def event = new SomeEventObject()

    when:
    sut.handle(event)

    then:
    def updatedValue = myClassRepository.findTestClass(someId)
    updatedTestClass.cash == 100

    1 * eventPublisher.publishEvent(new SomeNextEvent(updatedValue))
}
}

uj5u.com熱心網友回復：

您遇到了 Spock 魔法的副作用。

你的方法基本上變成了這個：

public void $spock_feature_0_0() {
        org.spockframework.runtime.ErrorCollector $spock_errorCollector = org.spockframework.runtime.ErrorRethrower.INSTANCE
        org.spockframework.runtime.ValueRecorder $spock_valueRecorder = new org.spockframework.runtime.ValueRecorder()
        java.lang.Object someId = 'someId'
        java.lang.Object event = new apackage.SomeEventObject()
        this.getSpecificationContext().getMockController().enterScope()
        this.getSpecificationContext().getMockController().addInteraction(new org.spockframework.mock.runtime.InteractionBuilder(25, 9, '1 * eventPublisher.publishEvent(new SomeNextEvent(updatedValue))').setFixedCount(1).addEqualTarget(eventPublisher).addEqualMethodName('publishEvent').setArgListKind(true, false).addEqualArg(new apackage.SomeNextEvent(updatedValue)).build())
        sut.handle(event)
        this.getSpecificationContext().getMockController().leaveScope()
        java.lang.Object updatedValue = myClassRepository.findTestClass(someId)
        try {
            org.spockframework.runtime.SpockRuntime.verifyCondition($spock_errorCollector, $spock_valueRecorder.reset(), 'updatedTestClass.cash == 100', 23, 13, null, $spock_valueRecorder.record($spock_valueRecorder.startRecordingValue(3), $spock_valueRecorder.record($spock_valueRecorder.startRecordingValue(1), $spock_valueRecorder.record($spock_valueRecorder.startRecordingValue(0), updatedTestClass).cash) == $spock_valueRecorder.record($spock_valueRecorder.startRecordingValue(2), 100)))
        }
        catch (java.lang.Throwable throwable) {
            org.spockframework.runtime.SpockRuntime.conditionFailedWithException($spock_errorCollector, $spock_valueRecorder, 'updatedTestClass.cash == 100', 23, 13, null, throwable)}
        finally {
        }
        this.getSpecificationContext().getMockController().leaveScope()
    }

如果仔細觀察，您會發現互動定義在塊之前移動了when，但findTestClass()呼叫留在了后面。這就是為什么您會收到丟失的屬性例外。

解決方案是將查找移動到given塊，或者如果不可能，則使用引數捕獲，然后再檢查。

given:
def capturedEvent

when:
...

then:
1 * eventPublisher.publishEvent(_) >> { capturedEvent = it[0} }

and:

def updatedValue = myClassRepository.findTestClass(someId)
capturedEvent instanceof SomeNextEvent
capturedEvent.value == updatedValue 

您可以通過單擊在groovy Web 控制臺中自己查看轉換后的代碼Inspect AST。

標籤：爪哇 弹簧靴 史波克

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