| /* |
| * 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 java.io.ByteArrayOutputStream; |
| import java.io.PrintStream; |
| import org.junit.Assert; |
| import org.apache.hadoop.util.FindClass; |
| import org.apache.hadoop.util.ToolRunner; |
| import org.junit.Test; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Test the find class logic |
| */ |
| public class TestFindClass extends Assert { |
| private static final Logger LOG = |
| LoggerFactory.getLogger(TestFindClass.class); |
| |
| public static final String LOG4J_PROPERTIES = "log4j.properties"; |
| |
| /** |
| * Run the tool runner instance |
| * @param expected expected return code |
| * @param args a list of arguments |
| * @throws Exception on any falure that is not handled earlier |
| */ |
| private void run(int expected, String... args) throws Exception { |
| int result = ToolRunner.run(new FindClass(), args); |
| assertEquals(expected, result); |
| } |
| |
| @Test |
| public void testUsage() throws Throwable { |
| run(FindClass.E_USAGE, "org.apache.hadoop.util.TestFindClass"); |
| } |
| |
| @Test |
| public void testFindsResource() throws Throwable { |
| run(FindClass.SUCCESS, |
| FindClass.A_RESOURCE, "org/apache/hadoop/util/TestFindClass.class"); |
| } |
| |
| @Test |
| public void testFailsNoSuchResource() throws Throwable { |
| run(FindClass.E_NOT_FOUND, |
| FindClass.A_RESOURCE, |
| "org/apache/hadoop/util/ThereIsNoSuchClass.class"); |
| } |
| |
| @Test |
| public void testLoadFindsSelf() throws Throwable { |
| run(FindClass.SUCCESS, |
| FindClass.A_LOAD, "org.apache.hadoop.util.TestFindClass"); |
| } |
| |
| @Test |
| public void testLoadFailsNoSuchClass() throws Throwable { |
| run(FindClass.E_NOT_FOUND, |
| FindClass.A_LOAD, "org.apache.hadoop.util.ThereIsNoSuchClass"); |
| } |
| |
| @Test |
| public void testLoadWithErrorInStaticInit() throws Throwable { |
| run(FindClass.E_LOAD_FAILED, |
| FindClass.A_LOAD, |
| "org.apache.hadoop.util.TestFindClass$FailInStaticInit"); |
| } |
| |
| @Test |
| public void testCreateHandlesBadToString() throws Throwable { |
| run(FindClass.SUCCESS, |
| FindClass.A_CREATE, |
| "org.apache.hadoop.util.TestFindClass$BadToStringClass"); |
| } |
| |
| @Test |
| public void testCreatesClass() throws Throwable { |
| run(FindClass.SUCCESS, |
| FindClass.A_CREATE, "org.apache.hadoop.util.TestFindClass"); |
| } |
| |
| @Test |
| public void testCreateFailsInStaticInit() throws Throwable { |
| run(FindClass.E_LOAD_FAILED, |
| FindClass.A_CREATE, |
| "org.apache.hadoop.util.TestFindClass$FailInStaticInit"); |
| } |
| |
| @Test |
| public void testCreateFailsInConstructor() throws Throwable { |
| run(FindClass.E_CREATE_FAILED, |
| FindClass.A_CREATE, |
| "org.apache.hadoop.util.TestFindClass$FailInConstructor"); |
| } |
| |
| @Test |
| public void testCreateFailsNoEmptyConstructor() throws Throwable { |
| run(FindClass.E_CREATE_FAILED, |
| FindClass.A_CREATE, |
| "org.apache.hadoop.util.TestFindClass$NoEmptyConstructor"); |
| } |
| |
| @Test |
| public void testLoadPrivateClass() throws Throwable { |
| run(FindClass.SUCCESS, |
| FindClass.A_LOAD, "org.apache.hadoop.util.TestFindClass$PrivateClass"); |
| } |
| |
| @Test |
| public void testCreateFailsPrivateClass() throws Throwable { |
| run(FindClass.E_CREATE_FAILED, |
| FindClass.A_CREATE, |
| "org.apache.hadoop.util.TestFindClass$PrivateClass"); |
| } |
| |
| @Test |
| public void testCreateFailsInPrivateConstructor() throws Throwable { |
| run(FindClass.E_CREATE_FAILED, |
| FindClass.A_CREATE, |
| "org.apache.hadoop.util.TestFindClass$PrivateConstructor"); |
| } |
| |
| @Test |
| public void testLoadFindsLog4J() throws Throwable { |
| run(FindClass.SUCCESS, FindClass.A_RESOURCE, LOG4J_PROPERTIES); |
| } |
| |
| @SuppressWarnings("UseOfSystemOutOrSystemErr") |
| @Test |
| public void testPrintLog4J() throws Throwable { |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| PrintStream out = new PrintStream(baos); |
| FindClass.setOutputStreams(out, System.err); |
| run(FindClass.SUCCESS, FindClass.A_PRINTRESOURCE, LOG4J_PROPERTIES); |
| //here the content should be done |
| out.flush(); |
| String body = baos.toString("UTF8"); |
| LOG.info(LOG4J_PROPERTIES + " =\n" + body); |
| assertTrue(body.contains("Apache")); |
| } |
| |
| |
| /** |
| * trigger a divide by zero fault in the static init |
| */ |
| public static class FailInStaticInit { |
| static { |
| int x = 0; |
| int y = 1 / x; |
| } |
| } |
| |
| /** |
| * trigger a divide by zero fault in the constructor |
| */ |
| public static class FailInConstructor { |
| public FailInConstructor() { |
| int x = 0; |
| int y = 1 / x; |
| } |
| } |
| |
| /** |
| * A class with no parameterless constructor -expect creation to fail |
| */ |
| public static class NoEmptyConstructor { |
| public NoEmptyConstructor(String text) { |
| } |
| } |
| |
| /** |
| * This has triggers an NPE in the toString() method; checks the logging |
| * code handles this. |
| */ |
| public static class BadToStringClass { |
| public BadToStringClass() { |
| } |
| |
| @Override |
| public String toString() { |
| throw new NullPointerException("oops"); |
| } |
| } |
| |
| /** |
| * This has a private constructor |
| * -creating it will trigger an IllegalAccessException |
| */ |
| public static class PrivateClass { |
| private PrivateClass() { |
| } |
| } |
| |
| /** |
| * This has a private constructor |
| * -creating it will trigger an IllegalAccessException |
| */ |
| public static class PrivateConstructor { |
| private PrivateConstructor() { |
| } |
| } |
| } |