Java tutorial
/* * Copyright 2019 ThoughtWorks, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.thoughtworks.go.plugin.infra.monitor; import org.apache.commons.io.FileUtils; import org.apache.commons.io.IOUtils; import org.junit.After; import org.junit.Before; import org.junit.Rule; import org.junit.rules.TemporaryFolder; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.net.URISyntaxException; import java.net.URL; import java.nio.charset.Charset; public abstract class AbstractDefaultPluginJarLocationMonitorTest { private static final int NO_OF_TRIES_TO_CHECK_MONITOR_RUN = 30; @Rule public final TemporaryFolder temporaryFolder = new TemporaryFolder(); protected void waitAMoment() throws InterruptedException { Thread.yield(); Thread.sleep(2000); } protected void waitUntilNextRun(DefaultPluginJarLocationMonitor monitor) throws InterruptedException { long previousRun = monitor.getLastRun(); int numberOfTries = 0; while (previousRun >= monitor.getLastRun() && numberOfTries < NO_OF_TRIES_TO_CHECK_MONITOR_RUN) { Thread.yield(); Thread.sleep(500); numberOfTries++; } if (numberOfTries >= NO_OF_TRIES_TO_CHECK_MONITOR_RUN) { throw new RuntimeException("Number of tries exceeded, but monitor thread hasn't run yet"); } } protected void copyPluginToThePluginDirectory(File pluginDir, String destinationFilenameOfPlugin) throws IOException, URISyntaxException { URL resource = getClass().getClassLoader().getResource("defaultFiles/descriptor-aware-test-plugin.jar"); FileUtils.copyURLToFile(resource, new File(pluginDir, destinationFilenameOfPlugin)); } protected void updateFileContents(File someFile) { try (FileOutputStream output = new FileOutputStream(someFile)) { IOUtils.write("some rubbish", output, Charset.defaultCharset()); } catch (IOException e) { throw new RuntimeException(e); } } protected PluginFileDetails pluginFileDetails(File directory, String pluginFile, boolean bundledPlugin) { return new PluginFileDetails(new File(directory, pluginFile), bundledPlugin); } @Before public void setUp() throws Exception { temporaryFolder.create(); } @After public void tearDown() throws Exception { temporaryFolder.delete(); } }