| /* |
| * 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.io.IOException; |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Modifier; |
| import java.util.Arrays; |
| |
| import org.apache.lucene.index.MergePolicy.MergeSpecification; |
| import org.junit.Test; |
| |
| public class TestNoMergePolicy extends BaseMergePolicyTestCase { |
| |
| public MergePolicy mergePolicy() { |
| return NoMergePolicy.INSTANCE; |
| } |
| |
| @Test |
| public void testNoMergePolicy() throws Exception { |
| MergePolicy mp = mergePolicy(); |
| assertNull(mp.findMerges(null, (SegmentInfos)null, null)); |
| assertNull(mp.findForcedMerges(null, 0, null, null)); |
| assertNull(mp.findForcedDeletesMerges(null, null)); |
| } |
| |
| @Test |
| public void testFinalSingleton() throws Exception { |
| assertTrue(Modifier.isFinal(NoMergePolicy.class.getModifiers())); |
| Constructor<?>[] ctors = NoMergePolicy.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 MergePolicy are overridden. That's important |
| // to ensure that NoMergePolicy overrides everything, so that no unexpected |
| // behavior/error occurs |
| for (Method m : NoMergePolicy.class.getMethods()) { |
| // getDeclaredMethods() returns just those methods that are declared on |
| // NoMergePolicy. getMethods() returns those that are visible in that |
| // context, including ones from Object. So just filter out Object. If in |
| // the future MergePolicy will extend a different class than Object, this |
| // will need to change. |
| if (m.getName().equals("clone")) { |
| continue; |
| } |
| if (m.getDeclaringClass() != Object.class && !Modifier.isFinal(m.getModifiers())) { |
| assertTrue(m + " is not overridden ! ", m.getDeclaringClass() == NoMergePolicy.class); |
| } |
| } |
| } |
| |
| @Override |
| protected void assertSegmentInfos(MergePolicy policy, SegmentInfos infos) throws IOException { |
| for (SegmentCommitInfo info : infos) { |
| assertEquals(IndexWriter.SOURCE_FLUSH, info.info.getAttribute(IndexWriter.SOURCE)); |
| } |
| } |
| |
| @Override |
| protected void assertMerge(MergePolicy policy, MergeSpecification merge) throws IOException { |
| fail(); // should never happen |
| } |
| |
| @Override |
| public void testSimulateAppendOnly() throws IOException { |
| // Reduce numbers as this merge policy doesn't work well with lots of data |
| doTestSimulateAppendOnly(mergePolicy(), 1_000_000, 10_000); |
| } |
| |
| @Override |
| public void testSimulateUpdates() throws IOException { |
| // Reduce numbers as this merge policy doesn't work well with lots of data |
| doTestSimulateUpdates(mergePolicy(), 100_000, 1000); |
| } |
| } |