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.druid.segment; import com.google.common.primitives.Ints; import org.apache.commons.io.FileUtils; import org.junit.Assert; import org.junit.Rule; import org.junit.Test; import org.junit.rules.TemporaryFolder; import java.io.File; import java.io.IOException; /** */ public class SegmentUtilsTest { @Rule public final TemporaryFolder tempFolder = new TemporaryFolder(); @Test public void testVersionBin() throws Exception { File dir = tempFolder.newFolder(); FileUtils.writeByteArrayToFile(new File(dir, "version.bin"), Ints.toByteArray(9)); Assert.assertEquals(9, SegmentUtils.getVersionFromDir(dir)); } @Test public void testIndexDrd() throws Exception { File dir = tempFolder.newFolder(); FileUtils.writeByteArrayToFile(new File(dir, "index.drd"), new byte[] { (byte) 0x8 }); Assert.assertEquals(8, SegmentUtils.getVersionFromDir(dir)); } @Test(expected = IOException.class) public void testException() throws Exception { SegmentUtils.getVersionFromDir(tempFolder.newFolder()); } }