1 /*
   2  * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.javafx.application;
  27 
  28 import java.util.concurrent.CountDownLatch;
  29 import java.util.concurrent.TimeUnit;
  30 import java.util.concurrent.atomic.AtomicInteger;
  31 import javafx.application.Application;
  32 import javafx.application.Platform;
  33 import javafx.stage.Stage;
  34 import junit.framework.AssertionFailedError;
  35 import org.junit.AfterClass;
  36 import org.junit.BeforeClass;
  37 import org.junit.Test;
  38 import util.Util;
  39 
  40 import static org.junit.Assert.*;
  41 import static util.Util.TIMEOUT;
  42 
  43 /**
  44  * Unit tests for Platform runLater.
  45  */
  46 public class RunLaterTest {
  47 
  48     // Used to launch the application before running any test
  49     private static final CountDownLatch launchLatch = new CountDownLatch(1);
  50 
  51     // Application class. An instance is created and initialized before running
  52     // the first test, and it lives through the execution of all tests.
  53     public static class MyApp extends Application {
  54         @Override public void start(Stage primaryStage) throws Exception {
  55             Platform.setImplicitExit(false);
  56             launchLatch.countDown();
  57         }
  58     }
  59 
  60 
  61     @BeforeClass
  62     public static void setupOnce() {
  63         // Start the Application
  64         new Thread(() -> Application.launch(MyApp.class, (String[])null)).start();
  65 
  66         try {
  67             if (!launchLatch.await(TIMEOUT, TimeUnit.MILLISECONDS)) {
  68                 throw new AssertionFailedError("Timeout waiting for Application to launch");
  69             }
  70         } catch (InterruptedException ex) {
  71             AssertionFailedError err = new AssertionFailedError("Unexpected exception");
  72             err.initCause(ex);
  73             throw err;
  74         }
  75     }
  76 
  77     @AfterClass
  78     public static void teardownOnce() {
  79         Platform.exit();
  80     }
  81 
  82     private AtomicInteger seqNum = new AtomicInteger(0);
  83 
  84     protected void doTestRunLater(final int numRunnables) {
  85         final boolean DELAY = true;
  86 
  87         Runnable[] runnables = new Runnable[numRunnables];
  88         for (int i = 0; i < numRunnables; i++) {
  89             final int idx = i;
  90             runnables[idx] = () -> {
  91                 if (idx == 0) {
  92                     Util.sleep(100);
  93                 }
  94                 int seq = seqNum.getAndIncrement();
  95                 assertEquals(idx, seq);
  96             };
  97         }
  98         Util.runAndWait(DELAY, runnables);
  99         assertEquals(numRunnables, seqNum.get());
 100     }
 101 
 102     @Test
 103     public void testRunLater1() {
 104        doTestRunLater(1);
 105     }
 106 
 107     @Test
 108     public void testRunLater2() {
 109        doTestRunLater(2);
 110     }
 111 
 112     @Test
 113     public void testRunLater10() {
 114        doTestRunLater(10);
 115     }
 116 
 117     @Test
 118     public void testRunLater100() {
 119        doTestRunLater(100);
 120     }
 121 
 122     @Test
 123     public void testRunLater1000() {
 124        doTestRunLater(1000);
 125     }
 126 
 127     @Test
 128     public void testRunLater10000() {
 129        doTestRunLater(10000);
 130     }
 131 
 132     @Test
 133     public void testRunLater15000() {
 134        doTestRunLater(15000);
 135     }
 136 
 137     @Test
 138     public void testRunLater20000() {
 139        doTestRunLater(20000);
 140     }
 141 
 142 }