使用TestNG进行JavaFx 2应用程序的单元测试 [英] Unit testing JavaFx 2 application with TestNG

问题描述

我写了一个相当复杂的JavaFx 2应用程序，我想为此编写一堆单元测试.问题是，当我尝试进行测试时，出现运行时错误，抱怨未初始化的工具包.

I wrote a rather complex JavaFx 2 application for which I'd like to write a bunch of unit tests. Problem is when I try to conduct the tests I get a runtime error complaining about uninitialized toolkit.

据我所知，我应该以某种方式在@BeforeClass方法中调用Application.launch()，但这会导致死锁，因为Application.launch()不会返回调用线程.

From what I can tell I should somehow invoke Application.launch() in a @BeforeClass method but this causes a deadlock as Application.launch() doesn't return to calling thread.

所以问题是我应该如何初始化JavaFx?

So question is how should I initialize JavaFx?

这是无效的代码框架:

public class AppTest extends Application {

    @BeforeClass
    public void initialize() {
        launch(); //this causes a deadlock
    }

    @Test
    public void test1() {
        //conduct test here
    }

    @Test
    public void test2() {
        //conduct other test here
    }

    @Override
    public void start(Stage arg0) throws Exception {
    }

提前谢谢！

推荐答案

来自

From another question here on stackoverflow, I've made myself this little helper class:

import javafx.application.Application;
import javafx.stage.Stage;

public class JavaFXInitializer extends Application {

    private static Object barrier = new Object();

    @Override
    public void start(Stage primaryStage) throws Exception {
        synchronized(barrier) {
            barrier.notify();
        }
    }

    public static void initialize() throws InterruptedException {
        Thread t = new Thread("JavaFX Init Thread") {
            public void run() {
                Application.launch(JavaFXInitializer.class, new String[0]);
            }
        };
        t.setDaemon(true);
        t.start();      
        synchronized(barrier) {
            barrier.wait();
        }
    }
}

然后可以在@BeforeClass设置方法中轻松使用它:

which can then be used easily in a @BeforeClass setup method:

@BeforeClass
public void setup() throws InterruptedException {
    JavaFXInitializer.initialize();
}

这篇关于使用TestNG进行JavaFx 2应用程序的单元测试的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！