| /** |
| * 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.hadoop.util; |
| |
| import junit.framework.TestCase; |
| |
| import java.io.BufferedReader; |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| |
| public class TestShell extends TestCase { |
| |
| private static class Command extends Shell { |
| private int runCount = 0; |
| |
| private Command(long interval) { |
| super(interval); |
| } |
| |
| protected String[] getExecString() { |
| return new String[] {"echo", "hello"}; |
| } |
| |
| protected void parseExecResult(BufferedReader lines) throws IOException { |
| ++runCount; |
| } |
| |
| public int getRunCount() { |
| return runCount; |
| } |
| } |
| |
| public void testInterval() throws IOException { |
| testInterval(Long.MIN_VALUE / 60000); // test a negative interval |
| testInterval(0L); // test a zero interval |
| testInterval(10L); // interval equal to 10mins |
| testInterval(System.currentTimeMillis() / 60000 + 60); // test a very big interval |
| } |
| |
| /** |
| * Assert that a string has a substring in it |
| * @param string string to search |
| * @param search what to search for it |
| */ |
| private void assertInString(String string, String search) { |
| assertNotNull("Empty String", string); |
| if (!string.contains(search)) { |
| fail("Did not find \"" + search + "\" in " + string); |
| } |
| } |
| |
| public void testShellCommandExecutorToString() throws Throwable { |
| Shell.ShellCommandExecutor sce=new Shell.ShellCommandExecutor( |
| new String[] { "ls","..","arg 2"}); |
| String command = sce.toString(); |
| assertInString(command,"ls"); |
| assertInString(command, " .. "); |
| assertInString(command, "\"arg 2\""); |
| } |
| |
| public void testShellCommandTimeout() throws Throwable { |
| String rootDir = new File(System.getProperty( |
| "test.build.data", "/tmp")).getAbsolutePath(); |
| File shellFile = new File(rootDir, "timeout.sh"); |
| String timeoutCommand = "sleep 4; echo \"hello\""; |
| PrintWriter writer = new PrintWriter(new FileOutputStream(shellFile)); |
| writer.println(timeoutCommand); |
| writer.close(); |
| shellFile.setExecutable(true); |
| Shell.ShellCommandExecutor shexc |
| = new Shell.ShellCommandExecutor(new String[]{shellFile.getAbsolutePath()}, |
| null, null, 100); |
| try { |
| shexc.execute(); |
| } catch (Exception e) { |
| //When timing out exception is thrown. |
| } |
| shellFile.delete(); |
| assertTrue("Script didnt not timeout" , shexc.isTimedOut()); |
| } |
| |
| private void testInterval(long interval) throws IOException { |
| Command command = new Command(interval); |
| |
| command.run(); |
| assertEquals(1, command.getRunCount()); |
| |
| command.run(); |
| if (interval > 0) { |
| assertEquals(1, command.getRunCount()); |
| } else { |
| assertEquals(2, command.getRunCount()); |
| } |
| } |
| } |