| /** |
| * 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 |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * 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.fs; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.test.GenericTestUtils; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import java.io.File; |
| import java.io.IOException; |
| |
| import static org.junit.Assert.*; |
| |
| public class TestGetSpaceUsed { |
| final static private File DIR = |
| GenericTestUtils.getTestDir("TestGetSpaceUsed"); |
| |
| @Before |
| public void setUp() { |
| FileUtil.fullyDelete(DIR); |
| assertTrue(DIR.mkdirs()); |
| } |
| |
| @After |
| public void tearDown() throws IOException { |
| FileUtil.fullyDelete(DIR); |
| } |
| |
| /** |
| * Test that the builder can create a class specified through the class. |
| */ |
| @Test |
| public void testBuilderConf() throws Exception { |
| File file = new File(DIR, "testBuilderConf"); |
| assertTrue(file.createNewFile()); |
| Configuration conf = new Configuration(); |
| conf.set("fs.getspaceused.classname", DummyDU.class.getName()); |
| CachingGetSpaceUsed instance = |
| (CachingGetSpaceUsed) new CachingGetSpaceUsed.Builder() |
| .setPath(file) |
| .setInterval(0) |
| .setConf(conf) |
| .build(); |
| assertNotNull(instance); |
| assertTrue(instance instanceof DummyDU); |
| assertFalse(instance.running()); |
| instance.close(); |
| } |
| |
| @Test |
| public void testBuildInitial() throws Exception { |
| File file = new File(DIR, "testBuildInitial"); |
| assertTrue(file.createNewFile()); |
| CachingGetSpaceUsed instance = |
| (CachingGetSpaceUsed) new CachingGetSpaceUsed.Builder() |
| .setPath(file) |
| .setInitialUsed(90210) |
| .setKlass(DummyDU.class) |
| .build(); |
| assertEquals(90210, instance.getUsed()); |
| instance.close(); |
| } |
| |
| @Test |
| public void testBuildInterval() throws Exception { |
| File file = new File(DIR, "testBuildInitial"); |
| assertTrue(file.createNewFile()); |
| CachingGetSpaceUsed instance = |
| (CachingGetSpaceUsed) new CachingGetSpaceUsed.Builder() |
| .setPath(file) |
| .setInitialUsed(90210) |
| .setInterval(50060) |
| .setKlass(DummyDU.class) |
| .build(); |
| assertEquals(50060, instance.getRefreshInterval()); |
| instance.close(); |
| } |
| |
| @Test |
| public void testBuildNonCaching() throws Exception { |
| File file = new File(DIR, "testBuildNonCaching"); |
| assertTrue(file.createNewFile()); |
| GetSpaceUsed instance = new CachingGetSpaceUsed.Builder() |
| .setPath(file) |
| .setInitialUsed(90210) |
| .setInterval(50060) |
| .setKlass(DummyGetSpaceUsed.class) |
| .build(); |
| assertEquals(300, instance.getUsed()); |
| assertTrue(instance instanceof DummyGetSpaceUsed); |
| } |
| |
| private static class DummyDU extends CachingGetSpaceUsed { |
| |
| public DummyDU(Builder builder) throws IOException { |
| // Push to the base class. |
| // Most times that's all that will need to be done. |
| super(builder); |
| } |
| |
| @Override |
| protected void refresh() { |
| // This is a test so don't du anything. |
| } |
| } |
| |
| private static class DummyGetSpaceUsed implements GetSpaceUsed { |
| |
| public DummyGetSpaceUsed(GetSpaceUsed.Builder builder) { |
| |
| } |
| |
| @Override public long getUsed() throws IOException { |
| return 300; |
| } |
| } |
| } |