[英]Mocking child actor in Akka
我正在嘗試為我的演員編寫單元測試,並堅持基本的模擬。 PriceAggregateActor正在使用akka持久性,我不想為它傳遞所有的conf並且想要完全嘲笑它。
這是我要測試的演員
object CommandPriceActor {
def apply() = Props(classOf[CommandPriceActor], PriceAggregateActor())
}
class CommandPriceActor(priceAggregateActorProps: Props) extends Actor with ActorLogging {
val priceAggregateActor = context.actorOf(priceAggregateActorProps, "priceAggregateActor")
所以在我的測試中,我正在嘗試做類似的事情:
class CommandPriceActorTest extends TestKit(ActorSystem("test-benefits",
ConfigFactory.parseString("""akka.loggers = ["akka.testkit.TestEventListener"] """))) with FlatSpecLike with Matchers
with BeforeAndAfterAll with Eventually{
class MockedChild extends Actor {
def receive = {
case _ => lala
}
}
val probe = TestProbe()
val commandPriceActor = TestActorRef(new CommandPriceActor(Props[MockedChild]))
我總是得到:
Caused by: java.lang.IllegalArgumentException: no matching constructor found on class CommandPriceActorTest$MockedChild for arguments []
為什么抱怨mockedChild? 它不應該采用任何構造函數參數。
這是因為MockedChild是您測試的兒童演員。 缺少的構造函數參數是對測試的引用(它是父類)。
你有三個選擇:
this
的引用傳遞給Props
Props
的命名參數形式 選項1
val probe = TestProbe()
val mockProps = Props(classOf[MockedChild], this)
val commandPriceActor = TestActorRef(new CommandPriceActor(mockProps))
選項2
val probe = TestProbe()
val mockProps = Props(new MockedChild)
val commandPriceActor = TestActorRef(new CommandPriceActor(mockProps))
選項3
val probe = TestProbe()
val mockProps = Props(new CommandPriceActorTest.MockedChild)
val commandPriceActor = TestActorRef(new CommandPriceActor(mockProps))
// ....
object CommandPriceActorTest {
class MockedChild extends Actor {
def receive = {
case _ => lala
}
}
}
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