| /** |
| * 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.commons.lang.RandomStringUtils; |
| 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 java.io.RandomAccessFile; |
| |
| |
| import static org.junit.Assert.assertTrue; |
| |
| /** |
| * Test to make sure df can run and work. |
| */ |
| public class TestDFCachingGetSpaceUsed { |
| final static private File DF_DIR = GenericTestUtils.getTestDir("testdfspace"); |
| public static final int FILE_SIZE = 1024; |
| |
| @Before |
| public void setUp() { |
| FileUtil.fullyDelete(DF_DIR); |
| assertTrue(DF_DIR.mkdirs()); |
| } |
| |
| @After |
| public void tearDown() throws IOException { |
| FileUtil.fullyDelete(DF_DIR); |
| } |
| |
| @Test |
| public void testCanBuildRun() throws Exception { |
| File file = writeFile("testCanBuild"); |
| |
| GetSpaceUsed instance = new CachingGetSpaceUsed.Builder() |
| .setPath(file) |
| .setInterval(50060) |
| .setKlass(DFCachingGetSpaceUsed.class) |
| .build(); |
| assertTrue(instance instanceof DFCachingGetSpaceUsed); |
| assertTrue(instance.getUsed() >= FILE_SIZE - 20); |
| ((DFCachingGetSpaceUsed) instance).close(); |
| } |
| |
| private File writeFile(String fileName) throws IOException { |
| File f = new File(DF_DIR, fileName); |
| assertTrue(f.createNewFile()); |
| RandomAccessFile randomAccessFile = new RandomAccessFile(f, "rws"); |
| randomAccessFile.writeUTF(RandomStringUtils.randomAlphabetic(FILE_SIZE)); |
| randomAccessFile.getFD().sync(); |
| randomAccessFile.close(); |
| return f; |
| } |
| |
| } |