TestShell.java
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上传日期:2018-01-08
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- /**
- * 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.IOException;
- 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"");
- }
- 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());
- }
- }
- }