| /* |
| * 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 |
| * |
| * 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 org.apache.tools.ant.taskdefs; |
| |
| import org.apache.tools.ant.util.JavaEnvUtils; |
| import junit.framework.*; |
| import java.io.*; |
| |
| /** |
| * Simple testcase for the ExecuteWatchdog class. |
| * |
| */ |
| public class ExecuteWatchdogTest extends TestCase { |
| |
| private final static long TIME_OUT = 5000; |
| |
| private final static String TEST_CLASSPATH = getTestClassPath(); |
| |
| private final static int CLOCK_ERROR=200; |
| private final static long TIME_OUT_TEST=TIME_OUT-CLOCK_ERROR; |
| |
| private ExecuteWatchdog watchdog; |
| |
| public ExecuteWatchdogTest(String name) { |
| super(name); |
| } |
| |
| protected void setUp(){ |
| watchdog = new ExecuteWatchdog(TIME_OUT); |
| } |
| |
| /** |
| * Dangerous method to obtain the classpath for the test. This is |
| * severely tighted to the build.xml properties. |
| */ |
| private static String getTestClassPath(){ |
| String classpath = System.getProperty("build.tests"); |
| if (classpath == null) { |
| System.err.println("WARNING: 'build.tests' 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) throws Exception { |
| BufferedReader err = new BufferedReader( new InputStreamReader(p.getErrorStream()) ); |
| StringBuffer buf = new StringBuffer(); |
| String line; |
| while ( (line = err.readLine()) != null){ |
| buf.append(line); |
| } |
| return buf.toString(); |
| } |
| |
| private int waitForEnd(Process p) throws Exception { |
| int retcode = p.waitFor(); |
| if (retcode != 0){ |
| String err = getErrorOutput(p); |
| if (err.length() > 0){ |
| System.err.println("ERROR:"); |
| System.err.println(err); |
| } |
| } |
| return retcode; |
| } |
| |
| public void testNoTimeOut() throws Exception { |
| Process process = getProcess(TIME_OUT/2); |
| watchdog.start(process); |
| int retCode = waitForEnd(process); |
| assertTrue("process should not have been killed", !watchdog.killedProcess()); |
| assertFalse(Execute.isFailure(retCode)); |
| } |
| |
| // test that the watchdog ends the process |
| public void testTimeOut() throws Exception { |
| Process process = getProcess(TIME_OUT*2); |
| long now = System.currentTimeMillis(); |
| watchdog.start(process); |
| int retCode = process.waitFor(); |
| long elapsed = System.currentTimeMillis() - now; |
| assertTrue("process should have been killed", watchdog.killedProcess()); |
| // assertTrue("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 |
| public void testFailed() throws Exception { |
| Process process = getProcess(-1); // process should abort |
| watchdog.start(process); |
| int retCode = process.waitFor(); |
| assertTrue("process should not have been killed", !watchdog.killedProcess()); |
| assertTrue("return code is invalid: " + retCode, retCode!=0); |
| } |
| |
| 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(){ |
| public void run(){ |
| try { |
| process.waitFor(); |
| } catch(InterruptedException e){ |
| // not very nice but will do the job |
| fail("process interrupted in thread"); |
| } |
| } |
| }; |
| 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()); |
| assertTrue("process should not have been killed", !watchdog.killedProcess()); |
| } |
| } |