Grails + Spock:在嵌入式hasMany字段上执行addTo*时出现NullPointerException

Question

我有域类:

class MarketCommoditiesConfiguration extends MarketConfiguration {

    static mapWith = "mongo"

    static hasMany = ['commodities': Commodity]

    static embedded = ['commodities']

    ...

执行save后addToCommodities抛出以下异常.

|  java.lang.NullPointerException
    at org.grails.datastore.mapping.model.types.Association.getInverseSide(Association.java:71)
    at org.grails.datastore.mapping.engine.NativeEntryEntityPersister.handleEmbeddedInstance(NativeEntryEntityPersister.java:1254)
    at org.grails.datastore.mapping.engine.NativeEntryEntityPersister.handleEmbeddedInstance(NativeEntryEntityPersister.java:1215)
    at org.grails.datastore.mapping.engine.NativeEntryEntityPersister.handleEmbeddedToMany(NativeEntryEntityPersister.java:1188)
    at org.grails.datastore.mapping.engine.NativeEntryEntityPersister.persistEntity(NativeEntryEntityPersister.java:1077)
    at org.grails.datastore.mapping.engine.NativeEntryEntityPersister.persistEntity(NativeEntryEntityPersister.java:1138)
    at org.grails.datastore.mapping.engine.EntityPersister.persist(EntityPersister.java:160)
    at org.grails.datastore.mapping.core.AbstractSession.persist(AbstractSession.java:522)
    at org.grails.datastore.gorm.GormInstanceApi.doSave(GormInstanceApi.groovy:194)
    at org.grails.datastore.gorm.GormInstanceApi.save_closure5(GormInstanceApi.groovy:162)
    at org.grails.datastore.mapping.core.DatastoreUtils.execute(DatastoreUtils.java:302)
    at org.grails.datastore.gorm.AbstractDatastoreApi.execute(AbstractDatastoreApi.groovy:37)
    at org.grails.datastore.gorm.GormInstanceApi.save(GormInstanceApi.groovy:161)
    at com.apposit.terra.connect.service.MarketService.addCommodityToMarket(MarketService.groovy:248)
    at com.apposit.terra.connect.service.MarketServiceSpec.Test addCommodityToMarket creates a new next month configuration if current month's configuration doesn't exist(MarketServiceSpec.groovy:164)

Answer 1

把Keyword里面@Mock的注释解决它.http://grails.1312388.n4.nabble.com/Grails-MongoDb-embedded-collection-causes-nullpointerexception-td4644098.html包含更多参与讨论.

我知道这已经超级老了,但谷歌搜索让我在这里面对同样的问题.确保已将@Mock(User)添加到单元测试类中.在我的例子中,我有多个级别的嵌入式域类,每个类都必须被模拟. - 克拉克斯汀