scala – 使用原始类型模拟案例类
发布时间:2020-12-16 18:32:05 所属栏目:安全 来源:网络整理
导读:考虑以下类型结构: trait HasId[T] { def id: T}case class Entity(id: Long) extends HasId[Long] 比方说,我们想在一些测试中模拟Entity类. val entityMock = mock[Entity]Mockito.when(entityMock.id).thenReturn(0) 在抛出NullPointerException(在第二行
考虑以下类型结构:
trait HasId[T] { def id: T } case class Entity(id: Long) extends HasId[Long] 比方说,我们想在一些测试中模拟Entity类. val entityMock = mock[Entity] Mockito.when(entityMock.id).thenReturn(0) 在抛出NullPointerException(在第二行)中播放这样的测试结果,可能是因为包装原始类型的scala编译器行为(如果我们用String替换Long,测试执行正确). An exception or error caused a run to abort. java.lang.NullPointerException at com.test.Entity$MockitoMock$1085095743.id(Unknown Source) at com.test.Test.<init>(Test.scala:23) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at java.lang.Class.newInstance(Class.java:442) at org.scalatest.tools.Runner$.genSuiteConfig(Runner.scala:1422) at org.scalatest.tools.Runner$.$anonfun$doRunRunRunDaDoRunRun$8(Runner.scala:1236) 此错误仅影响案例类和2.X版本中的mockito. 有没有任何已知的解决方案来处理这个问题? 更新:问题出现在比2.0.8-beta更新的版本中 解决方法
这是我的测试类:
import org.mockito.Mockito._ import org.scalatest.mockito.MockitoSugar import org.scalatest.FlatSpec class StackOverflowTest extends FlatSpec with MockitoSugar { "Bla" should "fsg ll ll" in { val entityMock = mock[Entity] when(entityMock.id).thenReturn(0) foo(entityMock) } def foo(entity: Entity) = { entity.id == 0 } } trait HasId[T] { def id: T } case class Entity(id: Long) extends HasId[Long] 这是我的sbt文件: name := "scalaExperiments" version := "0.1" scalaVersion := "2.12.4" libraryDependencies += "org.scalatest" %% "scalatest" % "3.0.4" % Test libraryDependencies += "org.mockito" % "mockito-all" % "2.0.2-beta" % Test 编译并成功通过. (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |