Java tutorial
/** * 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 org.junit.Test; import static org.junit.Assert.*; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.hadoop.crypto.OpensslCipher; import org.apache.hadoop.io.compress.Lz4Codec; import org.apache.hadoop.io.compress.SnappyCodec; import org.apache.hadoop.io.compress.zlib.ZlibFactory; import org.apache.hadoop.util.NativeCodeLoader; public class TestNativeCodeLoader { static final Log LOG = LogFactory.getLog(TestNativeCodeLoader.class); private static boolean requireTestJni() { String rtj = System.getProperty("require.test.libhadoop"); if (rtj == null) return false; if (rtj.compareToIgnoreCase("false") == 0) return false; return true; } @Test public void testNativeCodeLoaded() { if (requireTestJni() == false) { LOG.info("TestNativeCodeLoader: libhadoop.so testing is not required."); return; } if (!NativeCodeLoader.isNativeCodeLoaded()) { fail("TestNativeCodeLoader: libhadoop.so testing was required, but " + "libhadoop.so was not loaded."); } assertFalse(NativeCodeLoader.getLibraryName().isEmpty()); // library names are depended on platform and build envs // so just check names are available assertFalse(ZlibFactory.getLibraryName().isEmpty()); if (NativeCodeLoader.buildSupportsSnappy()) { assertFalse(SnappyCodec.getLibraryName().isEmpty()); } if (NativeCodeLoader.buildSupportsOpenssl()) { assertFalse(OpensslCipher.getLibraryName().isEmpty()); } assertFalse(Lz4Codec.getLibraryName().isEmpty()); LOG.info("TestNativeCodeLoader: libhadoop.so is loaded."); } }