| /* |
| * Copyright (C) 2010, Google Inc. |
| * and other copyright owners as documented in the project's IP log. |
| * |
| * This program and the accompanying materials are made available |
| * under the terms of the Eclipse Distribution License v1.0 which |
| * accompanies this distribution, is reproduced below, and is |
| * available at http://www.eclipse.org/org/documents/edl-v10.php |
| * |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * |
| * - Neither the name of the Eclipse Foundation, Inc. nor the |
| * names of its contributors may be used to endorse or promote |
| * products derived from this software without specific prior |
| * written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND |
| * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| package org.eclipse.jgit.lib; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNull; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.junit.Test; |
| |
| public class ThreadSafeProgressMonitorTest { |
| @Test |
| public void testFailsMethodsOnBackgroundThread() |
| throws InterruptedException { |
| final MockProgressMonitor mock = new MockProgressMonitor(); |
| final ThreadSafeProgressMonitor pm = new ThreadSafeProgressMonitor(mock); |
| |
| runOnThread(new Runnable() { |
| @Override |
| public void run() { |
| try { |
| pm.start(1); |
| fail("start did not fail on background thread"); |
| } catch (IllegalStateException notMainThread) { |
| // Expected result |
| } |
| |
| try { |
| pm.beginTask("title", 1); |
| fail("beginTask did not fail on background thread"); |
| } catch (IllegalStateException notMainThread) { |
| // Expected result |
| } |
| |
| try { |
| pm.endTask(); |
| fail("endTask did not fail on background thread"); |
| } catch (IllegalStateException notMainThread) { |
| // Expected result |
| } |
| } |
| }); |
| |
| // Ensure we didn't alter the mock above when checking threads. |
| assertNull(mock.taskTitle); |
| assertEquals(0, mock.value); |
| } |
| |
| @Test |
| public void testMethodsOkOnMainThread() { |
| final MockProgressMonitor mock = new MockProgressMonitor(); |
| final ThreadSafeProgressMonitor pm = new ThreadSafeProgressMonitor(mock); |
| |
| pm.start(1); |
| assertEquals(1, mock.value); |
| |
| pm.beginTask("title", 42); |
| assertEquals("title", mock.taskTitle); |
| assertEquals(42, mock.value); |
| |
| pm.update(1); |
| pm.pollForUpdates(); |
| assertEquals(43, mock.value); |
| |
| pm.update(2); |
| pm.pollForUpdates(); |
| assertEquals(45, mock.value); |
| |
| pm.endTask(); |
| assertNull(mock.taskTitle); |
| assertEquals(0, mock.value); |
| } |
| |
| @Test |
| public void testUpdateOnBackgroundThreads() throws InterruptedException { |
| final MockProgressMonitor mock = new MockProgressMonitor(); |
| final ThreadSafeProgressMonitor pm = new ThreadSafeProgressMonitor(mock); |
| |
| pm.startWorker(); |
| |
| final CountDownLatch doUpdate = new CountDownLatch(1); |
| final CountDownLatch didUpdate = new CountDownLatch(1); |
| final CountDownLatch doEndWorker = new CountDownLatch(1); |
| |
| final Thread bg = new Thread() { |
| @Override |
| public void run() { |
| assertFalse(pm.isCancelled()); |
| |
| await(doUpdate); |
| pm.update(2); |
| didUpdate.countDown(); |
| |
| await(doEndWorker); |
| pm.update(1); |
| pm.endWorker(); |
| } |
| }; |
| bg.start(); |
| |
| pm.pollForUpdates(); |
| assertEquals(0, mock.value); |
| doUpdate.countDown(); |
| |
| await(didUpdate); |
| pm.pollForUpdates(); |
| assertEquals(2, mock.value); |
| |
| doEndWorker.countDown(); |
| pm.waitForCompletion(); |
| assertEquals(3, mock.value); |
| } |
| |
| private static void await(CountDownLatch cdl) { |
| try { |
| assertTrue("latch released", cdl.await(1000, TimeUnit.MILLISECONDS)); |
| } catch (InterruptedException ie) { |
| fail("Did not expect to be interrupted"); |
| } |
| } |
| |
| private static void runOnThread(Runnable task) throws InterruptedException { |
| Thread t = new Thread(task); |
| t.start(); |
| t.join(1000); |
| assertFalse("thread has stopped", t.isAlive()); |
| } |
| |
| private static class MockProgressMonitor implements ProgressMonitor { |
| String taskTitle; |
| |
| int value; |
| |
| @Override |
| public void update(int completed) { |
| value += completed; |
| } |
| |
| @Override |
| public void start(int totalTasks) { |
| value = totalTasks; |
| } |
| |
| @Override |
| public void beginTask(String title, int totalWork) { |
| taskTitle = title; |
| value = totalWork; |
| } |
| |
| @Override |
| public void endTask() { |
| taskTitle = null; |
| value = 0; |
| } |
| |
| @Override |
| public boolean isCancelled() { |
| return false; |
| } |
| } |
| } |