在将我的 TornadoFX 版本从 1.7.12 更新到 1.7.14 时，我注意到我的一项测试失败了。当under test 中的 a 被 with status 拒绝runAsyncWithProgress时，事情似乎出轨了。我在 1.7.13 的发行说明中看到了“内部线程池在应用程序退出时关闭”的更改。将 TornadoFX 版本设置为 1.7.13 导致同样的失败，证实我怀疑它与上述更改有关。ViewThreadPoolExecutorTerminated
我写了一个简单的应用程序来演示这个错误。
// src/main/kotlin/me/carltonwhitehead/AsyncBugApp.kt
class AsyncBugApp : App(MainView::class)
/**
* The main method is needed to support the mvn jfx:run goal.
*/
fun main(args: Array<String>) {
Application.launch(AsyncBugApp::class.java, *args)
}
class MainView : View("Async Bug App") {
val controller: MainController by inject()
override val root = pane {
button("Robot-click to repeat bug") {
id = "bug"
action {
runAsync {
controller.onAction("button clicked")
}
}
}
}
}
class MainController : Controller() {
fun onAction(message: String) {
println(message)
}
}
和测试
// src/test/kotlin/me/carltonwhitehead/AsyncBugAppTest.kt
@RunWith(Parameterized::class)
class AsyncBugAppTest(val rounds: Int) {
companion object {
@JvmStatic
@Parameterized.Parameters
fun data() : Collection<Array<Int>> {
return listOf(arrayOf(1), arrayOf(1))
}
}
lateinit var robot: FxRobot
lateinit var app: App
@RelaxedMockK
lateinit var controller: MainController
@Rule @JvmField
val timeout = Timeout(10, TimeUnit.SECONDS)
@Before
fun before() {
MockKAnnotations.init(this)
FxToolkit.registerPrimaryStage()
app = AsyncBugApp()
app.scope.set(controller)
FxToolkit.setupApplication { app }
robot = FxRobot()
println("rounds = $rounds")
}
@After
fun after() {
FxToolkit.cleanupStages()
FxToolkit.cleanupApplication(app)
}
@Test()
fun itShouldSurviveRunAsyncMultipleTimes() {
val latch = CountDownLatch(rounds)
every { controller.onAction(any()) }.answers { latch.countDown() }
var i = 0
while(i <= rounds) {
robot.clickOn("#bug")
i++
}
latch.await()
verify(exactly = rounds) { controller.onAction(any()) }
}
}
测试第一次执行时，它通过了。第二次挂起，因为 runAsync 被下面的堆栈跟踪拒绝。
--- Exception in Async Thread ---
java.util.concurrent.RejectedExecutionException: Task tornadofx.FXTask@a315135 rejected from java.util.concurrent.ThreadPoolExecutor@75bde925[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 2]
java.base/java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2104)
java.base/java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:848)
java.base/java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1397)
tornadofx.AsyncKt.task(Async.kt:76)
tornadofx.AsyncKt.task(Async.kt:69)
tornadofx.Component.runAsync(Component.kt:272)
tornadofx.Component.runAsync$default(Component.kt:988)
me.carltonwhitehead.MainView$root$1$1$1.invoke(AsyncBugApp.kt:21)
me.carltonwhitehead.MainView$root$1$1$1.invoke(AsyncBugApp.kt:15)
tornadofx.ControlsKt$action$2.handle(Controls.kt:513)
tornadofx.ControlsKt$action$2.handle(Controls.kt)
javafx.base/com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
javafx.base/com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
javafx.base/com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
javafx.base/com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
javafx.base/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
javafx.base/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
javafx.base/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
javafx.base/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
javafx.base/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
javafx.base/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
javafx.base/com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
javafx.base/com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
javafx.base/javafx.event.Event.fireEvent(Event.java:198)
javafx.graphics/javafx.scene.Node.fireEvent(Node.java:8863)
javafx.controls/javafx.scene.control.Button.fire(Button.java:200)
javafx.controls/com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:206)
javafx.controls/com.sun.javafx.scene.control.inputmap.InputMap.handle(InputMap.java:274)
javafx.base/com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
javafx.base/com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
javafx.base/com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
javafx.base/com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
javafx.base/com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
javafx.base/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
javafx.base/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
javafx.base/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
javafx.base/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
javafx.base/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
javafx.base/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
javafx.base/com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
javafx.base/com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
javafx.base/javafx.event.Event.fireEvent(Event.java:198)
javafx.graphics/javafx.scene.Scene$MouseHandler.process(Scene.java:3876)
javafx.graphics/javafx.scene.Scene$MouseHandler.access$1300(Scene.java:3604)
javafx.graphics/javafx.scene.Scene.processMouseEvent(Scene.java:1874)
javafx.graphics/javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2613)
javafx.graphics/com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:397)
javafx.graphics/com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:295)
java.base/java.security.AccessController.doPrivileged(Native Method)
javafx.graphics/com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$2(GlassViewEventHandler.java:434)
javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
javafx.graphics/com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:433)
javafx.graphics/com.sun.glass.ui.View.handleMouseEvent(View.java:556)
javafx.graphics/com.sun.glass.ui.View.notifyMouse(View.java:942)
javafx.graphics/com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
javafx.graphics/com.sun.glass.ui.gtk.GtkApplication.lambda$runLoop$11(GtkApplication.java:277)
java.base/java.lang.Thread.run(Thread.java:844)
我怀疑我可能在 TestFX/TornadoFX 应用程序生命周期中做错了什么。每个测试周期都在创建一个新的应用程序实例，所以我很困惑为什么要保留 ThreadPoolExecutor。有什么建议么？