| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 |
| * |
| * https://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 org.apache.tools.ant.taskdefs; |
| |
| import java.io.BufferedReader; |
| import java.io.InputStreamReader; |
| import java.util.stream.Collectors; |
| |
| import org.apache.tools.ant.util.JavaEnvUtils; |
| import org.junit.AssumptionViolatedException; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNotEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| /** |
| * Simple testcase for the ExecuteWatchdog class. |
| * |
| */ |
| public class ExecuteWatchdogTest { |
| |
| private static final String TEST_CLASSPATH = getTestClassPath(); |
| |
| private static final long TIME_OUT = 5000; |
| private static final int CLOCK_ERROR = 200; |
| private static final long TIME_OUT_TEST = TIME_OUT - CLOCK_ERROR; |
| |
| private ExecuteWatchdog watchdog; |
| |
| @Before |
| public void setUp() { |
| watchdog = new ExecuteWatchdog(TIME_OUT); |
| } |
| |
| /** |
| * Dangerous method to obtain the classpath for the test. This is |
| * severely tied to the build.xml properties. |
| */ |
| private static String getTestClassPath() { |
| String classpath = System.getProperty("build.tests.value"); |
| if (classpath == null) { |
| System.err.println("WARNING: 'build.tests.value' property is not available!"); |
| classpath = System.getProperty("java.class.path"); |
| } |
| |
| return classpath; |
| } |
| |
| private Process getProcess(long timetorun) throws Exception { |
| String[] cmdArray = { |
| JavaEnvUtils.getJreExecutable("java"), "-classpath", TEST_CLASSPATH, |
| TimeProcess.class.getName(), String.valueOf(timetorun) |
| }; |
| //System.out.println("Testing with classpath: " + System.getProperty("java.class.path")); |
| return Runtime.getRuntime().exec(cmdArray); |
| } |
| |
| private String getErrorOutput(Process p) { |
| BufferedReader err = new BufferedReader(new InputStreamReader(p.getErrorStream())); |
| return err.lines().collect(Collectors.joining()); |
| } |
| |
| private int waitForEnd(Process p) throws Exception { |
| int retcode = p.waitFor(); |
| if (retcode != 0) { |
| String err = getErrorOutput(p); |
| if (!err.isEmpty()) { |
| System.err.println("ERROR:"); |
| System.err.println(err); |
| } |
| } |
| return retcode; |
| } |
| |
| @Test |
| public void testNoTimeOut() throws Exception { |
| Process process = getProcess(TIME_OUT / 2); |
| watchdog.start(process); |
| int retCode = waitForEnd(process); |
| assertFalse("process should not have been killed", watchdog.killedProcess()); |
| assertFalse(Execute.isFailure(retCode)); |
| } |
| |
| // test that the watchdog ends the process |
| @Test |
| public void testTimeOut() throws Exception { |
| Process process = getProcess(TIME_OUT * 2); |
| long now = System.currentTimeMillis(); |
| watchdog.start(process); |
| @SuppressWarnings("unused") |
| int retCode = process.waitFor(); |
| long elapsed = System.currentTimeMillis() - now; |
| assertTrue("process should have been killed", watchdog.killedProcess()); |
| // assertNotEquals("return code is invalid: " + retCode, retCode, 0); |
| assertTrue("elapse time of " + elapsed + " ms is less than timeout value of " + TIME_OUT_TEST + " ms", |
| elapsed >= TIME_OUT_TEST); |
| assertTrue("elapse time of " + elapsed + " ms is greater than run value of " + (TIME_OUT * 2) + " ms", |
| elapsed < TIME_OUT * 2); |
| } |
| |
| // test a process that runs and failed |
| @Test |
| public void testFailed() throws Exception { |
| Process process = getProcess(-1); // process should abort |
| watchdog.start(process); |
| int retCode = process.waitFor(); |
| assertFalse("process should not have been killed", watchdog.killedProcess()); |
| assertNotEquals("return code is invalid: " + retCode, 0, retCode); |
| } |
| |
| @Test |
| public void testManualStop() throws Exception { |
| final Process process = getProcess(TIME_OUT * 2); |
| watchdog.start(process); |
| |
| // I assume that starting this takes less than TIME_OUT/2 ms... |
| Thread thread = new Thread(() -> { |
| try { |
| process.waitFor(); |
| } catch (InterruptedException e) { |
| // not very nice but will do the job |
| throw new AssumptionViolatedException("process interrupted in thread", e); |
| } |
| }); |
| thread.start(); |
| |
| // wait for TIME_OUT / 2, there should be about TIME_OUT / 2 ms remaining before timeout |
| thread.join(TIME_OUT / 2); |
| |
| // now stop the watchdog. |
| watchdog.stop(); |
| |
| // wait for the thread to die, should be the end of the process |
| thread.join(); |
| |
| // process should be dead and well finished |
| assertEquals(0, process.exitValue()); |
| assertFalse("process should not have been killed", watchdog.killedProcess()); |
| } |
| } |