1 | /** |
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2 | * Licensed to the Apache Software Foundation (ASF) under one |
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3 | * or more contributor license agreements. See the NOTICE file |
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4 | * distributed with this work for additional information |
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5 | * regarding copyright ownership. The ASF licenses this file |
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6 | * to you under the Apache License, Version 2.0 (the |
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7 | * "License"); you may not use this file except in compliance |
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8 | * with the License. You may obtain a copy of the License at |
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9 | * |
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10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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11 | * |
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12 | * Unless required by applicable law or agreed to in writing, software |
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13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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15 | * See the License for the specific language governing permissions and |
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16 | * limitations under the License. |
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17 | */ |
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18 | package org.apache.hadoop.util; |
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19 | |
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20 | import junit.framework.TestCase; |
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21 | |
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22 | import java.io.BufferedReader; |
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23 | import java.io.IOException; |
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24 | |
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25 | public class TestShell extends TestCase { |
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26 | |
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27 | private static class Command extends Shell { |
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28 | private int runCount = 0; |
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29 | |
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30 | private Command(long interval) { |
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31 | super(interval); |
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32 | } |
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33 | |
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34 | protected String[] getExecString() { |
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35 | return new String[] {"echo", "hello"}; |
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36 | } |
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37 | |
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38 | protected void parseExecResult(BufferedReader lines) throws IOException { |
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39 | ++runCount; |
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40 | } |
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41 | |
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42 | public int getRunCount() { |
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43 | return runCount; |
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44 | } |
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45 | } |
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46 | |
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47 | public void testInterval() throws IOException { |
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48 | testInterval(Long.MIN_VALUE / 60000); // test a negative interval |
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49 | testInterval(0L); // test a zero interval |
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50 | testInterval(10L); // interval equal to 10mins |
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51 | testInterval(System.currentTimeMillis() / 60000 + 60); // test a very big interval |
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52 | } |
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53 | |
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54 | /** |
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55 | * Assert that a string has a substring in it |
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56 | * @param string string to search |
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57 | * @param search what to search for it |
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58 | */ |
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59 | private void assertInString(String string, String search) { |
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60 | assertNotNull("Empty String", string); |
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61 | if (!string.contains(search)) { |
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62 | fail("Did not find \"" + search + "\" in " + string); |
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63 | } |
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64 | } |
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65 | |
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66 | public void testShellCommandExecutorToString() throws Throwable { |
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67 | Shell.ShellCommandExecutor sce=new Shell.ShellCommandExecutor( |
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68 | new String[] { "ls","..","arg 2"}); |
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69 | String command = sce.toString(); |
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70 | assertInString(command,"ls"); |
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71 | assertInString(command, " .. "); |
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72 | assertInString(command, "\"arg 2\""); |
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73 | } |
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74 | |
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75 | private void testInterval(long interval) throws IOException { |
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76 | Command command = new Command(interval); |
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77 | |
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78 | command.run(); |
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79 | assertEquals(1, command.getRunCount()); |
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80 | |
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81 | command.run(); |
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82 | if (interval > 0) { |
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83 | assertEquals(1, command.getRunCount()); |
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84 | } else { |
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85 | assertEquals(2, command.getRunCount()); |
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86 | } |
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87 | } |
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88 | } |
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