| /* |
| * 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.lucene.index; |
| |
| |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Modifier; |
| import java.util.Arrays; |
| |
| import org.apache.lucene.analysis.MockAnalyzer; |
| import org.apache.lucene.document.Document; |
| import org.apache.lucene.document.Field; |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.util.LuceneTestCase; |
| import org.junit.Test; |
| |
| public class TestNoDeletionPolicy extends LuceneTestCase { |
| |
| @Test |
| public void testNoDeletionPolicy() throws Exception { |
| IndexDeletionPolicy idp = NoDeletionPolicy.INSTANCE; |
| idp.onInit(null); |
| idp.onCommit(null); |
| } |
| |
| @Test |
| public void testFinalSingleton() throws Exception { |
| assertTrue(Modifier.isFinal(NoDeletionPolicy.class.getModifiers())); |
| Constructor<?>[] ctors = NoDeletionPolicy.class.getDeclaredConstructors(); |
| assertEquals("expected 1 private ctor only: " + Arrays.toString(ctors), 1, ctors.length); |
| assertTrue("that 1 should be private: " + ctors[0], Modifier.isPrivate(ctors[0].getModifiers())); |
| } |
| |
| @Test |
| public void testMethodsOverridden() throws Exception { |
| // Ensures that all methods of IndexDeletionPolicy are |
| // overridden/implemented. That's important to ensure that NoDeletionPolicy |
| // overrides everything, so that no unexpected behavior/error occurs. |
| // NOTE: even though IndexDeletionPolicy is an interface today, and so all |
| // methods must be implemented by NoDeletionPolicy, this test is important |
| // in case one day IDP becomes an abstract class. |
| for (Method m : NoDeletionPolicy.class.getMethods()) { |
| // getDeclaredMethods() returns just those methods that are declared on |
| // NoDeletionPolicy. getMethods() returns those that are visible in that |
| // context, including ones from Object. So just filter out Object. If in |
| // the future IndexDeletionPolicy will become a class that extends a |
| // different class than Object, this will need to change. |
| if (m.getDeclaringClass() != Object.class) { |
| assertTrue(m + " is not overridden !", m.getDeclaringClass() == NoDeletionPolicy.class); |
| } |
| } |
| } |
| |
| @Test |
| public void testAllCommitsRemain() throws Exception { |
| Directory dir = newDirectory(); |
| IndexWriter writer = new IndexWriter(dir, newIndexWriterConfig(new MockAnalyzer(random())) |
| .setIndexDeletionPolicy(NoDeletionPolicy.INSTANCE)); |
| for (int i = 0; i < 10; i++) { |
| Document doc = new Document(); |
| doc.add(newTextField("c", "a" + i, Field.Store.YES)); |
| writer.addDocument(doc); |
| writer.commit(); |
| assertEquals("wrong number of commits !", i + 1, DirectoryReader.listCommits(dir).size()); |
| } |
| writer.close(); |
| dir.close(); |
| } |
| |
| } |