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.vxquery.indexing; import java.io.File; import java.io.IOException; import java.security.NoSuchAlgorithmException; import java.util.Set; import java.util.concurrent.ConcurrentHashMap; import javax.xml.bind.JAXBException; import org.apache.commons.io.FileUtils; import org.apache.vxquery.runtime.functions.index.update.MetaFileUtil; import org.apache.vxquery.runtime.functions.index.update.XmlMetadata; import org.junit.AfterClass; import org.junit.Assert; import org.junit.BeforeClass; import org.junit.FixMethodOrder; import org.junit.Test; import org.junit.runners.MethodSorters; /** * Test cases for testing MetaFileUtil functions. * 1) Creating MetaData file * 2) Generating MD5 Hashes * 3) Detecting file changes * 4) Updating metadata * 5) Delete metadata file */ @FixMethodOrder(MethodSorters.NAME_ASCENDING) public class MetaFileUtilTest { private static MetaFileUtil metaFileUtil; private static ConcurrentHashMap<String, XmlMetadata> initialMap; private static ConcurrentHashMap<String, XmlMetadata> modifiedMap; @BeforeClass public static void setup() { new File(TestConstants.INDEX_DIR).mkdir(); metaFileUtil = new MetaFileUtil(TestConstants.INDEX_DIR); initialMap = TestConstants.getInitialMap(); modifiedMap = TestConstants.getModifiedMap(); } /** * Test case for generating MD5 string for an XML file. */ @Test public void step1_testGenerateMD5ForXML() throws IOException { TestConstants.createXML("catalog.xml"); File xml = new File(TestConstants.XML_FILE); String md5 = metaFileUtil.generateMD5(xml); Assert.assertEquals(TestConstants.INITIAL_MD5, md5); } /** * Test the creation of metadata file. */ @Test public void step2_testCreateMetaDataFile() { ConcurrentHashMap<String, XmlMetadata> initialMap = TestConstants.getInitialMap(); metaFileUtil.updateMetadataMap(initialMap, ""); metaFileUtil.writeMetadataToFile(); Assert.assertEquals(true, metaFileUtil.isMetaFilePresent()); } /** * Validate the content of the file. */ @Test public void step3_testValidateMetadataFile() { ConcurrentHashMap<String, XmlMetadata> fromFile = metaFileUtil.getMetadata(); Set<String> from = fromFile.keySet(); Set<String> initial = initialMap.keySet(); Assert.assertTrue(from.containsAll(initial)); for (String key : initial) { Assert.assertEquals(TestConstants.getXMLMetadataString(initialMap.get(key)), TestConstants.getXMLMetadataString(fromFile.get(key))); } } /** * Change the xml file and test whether the changes are detected. */ @Test public void step4_testDetectFileChanges() throws IOException { TestConstants.createXML("catalog_edited.xml"); File xml = new File(TestConstants.XML_FILE); Assert.assertTrue(metaFileUtil.generateMD5(xml).equals(TestConstants.CHANGED_MD5)); } /** * Test the update metadata file process. */ @Test public void step5_testUpdateMetadata() throws IOException, ClassNotFoundException, NoSuchAlgorithmException, JAXBException { ConcurrentHashMap<String, XmlMetadata> fromFileMap = metaFileUtil.getMetadata(); XmlMetadata modified = fromFileMap.get(TestConstants.XML_FILE); File xml = new File(TestConstants.XML_FILE); modified.setMd5(metaFileUtil.generateMD5(xml)); fromFileMap.replace(TestConstants.XML_FILE, modified); metaFileUtil.updateMetadataMap(fromFileMap, TestConstants.INDEX_DIR); Assert.assertNotNull(metaFileUtil.getMetadata()); } /** * Validate the updated metadata. */ @Test public void step6_testVerifyMetadataChange() { ConcurrentHashMap<String, XmlMetadata> fromFile = metaFileUtil.getMetadata(); Set<String> from = fromFile.keySet(); Set<String> modified = modifiedMap.keySet(); Assert.assertTrue(from.containsAll(modified)); for (String key : modified) { Assert.assertEquals(TestConstants.getXMLMetadataString(modifiedMap.get(key)), TestConstants.getXMLMetadataString(fromFile.get(key))); } } /** * Test deletion of metadata file */ @Test public void step7_testDeleteMetadataFile() { metaFileUtil.deleteMetaDataFile(); Assert.assertFalse(metaFileUtil.isMetaFilePresent()); } @AfterClass public static void tearDown() throws IOException { FileUtils.forceDelete(new File(TestConstants.INDEX_DIR)); } }