| /** |
| * 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 static org.junit.Assert.*; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.PrintStream; |
| import java.nio.charset.Charset; |
| import java.util.jar.Attributes; |
| import java.util.jar.JarFile; |
| import java.util.jar.Manifest; |
| |
| import org.apache.hadoop.fs.FileUtil; |
| import org.apache.hadoop.io.IOUtils; |
| import org.apache.hadoop.test.GenericTestUtils; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Tests covering the classpath command-line utility. |
| */ |
| public class TestClasspath { |
| |
| private static final Logger LOG = |
| LoggerFactory.getLogger(TestClasspath.class); |
| private static final File TEST_DIR = GenericTestUtils.getTestDir( |
| "TestClasspath"); |
| private static final Charset UTF8 = Charset.forName("UTF-8"); |
| |
| static { |
| ExitUtil.disableSystemExit(); |
| } |
| |
| private PrintStream oldStdout, oldStderr; |
| private ByteArrayOutputStream stdout, stderr; |
| private PrintStream printStdout, printStderr; |
| |
| @Before |
| public void setUp() { |
| assertTrue(FileUtil.fullyDelete(TEST_DIR)); |
| assertTrue(TEST_DIR.mkdirs()); |
| oldStdout = System.out; |
| oldStderr = System.err; |
| |
| stdout = new ByteArrayOutputStream(); |
| printStdout = new PrintStream(stdout); |
| System.setOut(printStdout); |
| |
| stderr = new ByteArrayOutputStream(); |
| printStderr = new PrintStream(stderr); |
| System.setErr(printStderr); |
| } |
| |
| @After |
| public void tearDown() { |
| System.setOut(oldStdout); |
| System.setErr(oldStderr); |
| IOUtils.cleanupWithLogger(LOG, printStdout, printStderr); |
| assertTrue(FileUtil.fullyDelete(TEST_DIR)); |
| } |
| |
| @Test |
| public void testGlob() { |
| Classpath.main(new String[] { "--glob" }); |
| String strOut = new String(stdout.toByteArray(), UTF8); |
| assertEquals(System.getProperty("java.class.path"), strOut.trim()); |
| assertTrue(stderr.toByteArray().length == 0); |
| } |
| |
| @Test |
| public void testJar() throws IOException { |
| File file = new File(TEST_DIR, "classpath.jar"); |
| Classpath.main(new String[] { "--jar", file.getAbsolutePath() }); |
| assertTrue(stdout.toByteArray().length == 0); |
| assertTrue(stderr.toByteArray().length == 0); |
| assertTrue(file.exists()); |
| assertJar(file); |
| } |
| |
| @Test |
| public void testJarReplace() throws IOException { |
| // Run the command twice with the same output jar file, and expect success. |
| testJar(); |
| testJar(); |
| } |
| |
| @Test |
| public void testJarFileMissing() throws IOException { |
| try { |
| Classpath.main(new String[] { "--jar" }); |
| fail("expected exit"); |
| } catch (ExitUtil.ExitException e) { |
| assertTrue(stdout.toByteArray().length == 0); |
| String strErr = new String(stderr.toByteArray(), UTF8); |
| assertTrue(strErr.contains("requires path of jar")); |
| } |
| } |
| |
| @Test |
| public void testHelp() { |
| Classpath.main(new String[] { "--help" }); |
| String strOut = new String(stdout.toByteArray(), UTF8); |
| assertTrue(strOut.contains("Prints the classpath")); |
| assertTrue(stderr.toByteArray().length == 0); |
| } |
| |
| @Test |
| public void testHelpShort() { |
| Classpath.main(new String[] { "-h" }); |
| String strOut = new String(stdout.toByteArray(), UTF8); |
| assertTrue(strOut.contains("Prints the classpath")); |
| assertTrue(stderr.toByteArray().length == 0); |
| } |
| |
| @Test |
| public void testUnrecognized() { |
| try { |
| Classpath.main(new String[] { "--notarealoption" }); |
| fail("expected exit"); |
| } catch (ExitUtil.ExitException e) { |
| assertTrue(stdout.toByteArray().length == 0); |
| String strErr = new String(stderr.toByteArray(), UTF8); |
| assertTrue(strErr.contains("unrecognized option")); |
| } |
| } |
| |
| /** |
| * Asserts that the specified file is a jar file with a manifest containing a |
| * non-empty classpath attribute. |
| * |
| * @param file File to check |
| * @throws IOException if there is an I/O error |
| */ |
| private static void assertJar(File file) throws IOException { |
| JarFile jarFile = null; |
| try { |
| jarFile = new JarFile(file); |
| Manifest manifest = jarFile.getManifest(); |
| assertNotNull(manifest); |
| Attributes mainAttributes = manifest.getMainAttributes(); |
| assertNotNull(mainAttributes); |
| assertTrue(mainAttributes.containsKey(Attributes.Name.CLASS_PATH)); |
| String classPathAttr = mainAttributes.getValue(Attributes.Name.CLASS_PATH); |
| assertNotNull(classPathAttr); |
| assertFalse(classPathAttr.isEmpty()); |
| } finally { |
| // It's too bad JarFile doesn't implement Closeable. |
| if (jarFile != null) { |
| try { |
| jarFile.close(); |
| } catch (IOException e) { |
| LOG.warn("exception closing jarFile: " + jarFile, e); |
| } |
| } |
| } |
| } |
| } |