| /* |
| * 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.kafka.common.utils; |
| |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.Timeout; |
| |
| import java.io.IOException; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| import static org.junit.Assume.assumeTrue; |
| |
| public class ShellTest { |
| @Rule |
| public final Timeout globalTimeout = Timeout.seconds(180); |
| |
| @Test |
| public void testEchoHello() throws Exception { |
| assumeTrue(!OperatingSystem.IS_WINDOWS); |
| String output = Shell.execCommand("echo", "hello"); |
| assertEquals("hello\n", output); |
| } |
| |
| @Test |
| public void testHeadDevZero() throws Exception { |
| assumeTrue(!OperatingSystem.IS_WINDOWS); |
| final int length = 100000; |
| String output = Shell.execCommand("head", "-c", Integer.toString(length), "/dev/zero"); |
| assertEquals(length, output.length()); |
| } |
| |
| private final static String NONEXISTENT_PATH = "/dev/a/path/that/does/not/exist/in/the/filesystem"; |
| |
| @Test |
| public void testAttemptToRunNonExistentProgram() { |
| assumeTrue(!OperatingSystem.IS_WINDOWS); |
| try { |
| Shell.execCommand(NONEXISTENT_PATH); |
| fail("Expected to get an exception when trying to run a program that does not exist"); |
| } catch (IOException e) { |
| assertTrue(e.getMessage().contains("No such file")); |
| } |
| } |
| |
| @Test |
| public void testRunProgramWithErrorReturn() throws Exception { |
| assumeTrue(!OperatingSystem.IS_WINDOWS); |
| try { |
| Shell.execCommand("head", "-c", "0", NONEXISTENT_PATH); |
| fail("Expected to get an exception when trying to head a nonexistent file"); |
| } catch (Shell.ExitCodeException e) { |
| String message = e.getMessage(); |
| assertTrue("Unexpected error message '" + message + "'", |
| message.contains("No such file") || message.contains("illegal byte count")); |
| } |
| } |
| } |