| /** |
| * |
| * Licensed 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. |
| * |
| * |
| * Unit tests for testing the KosmosFileSystem API implementation. |
| */ |
| |
| package org.apache.hadoop.fs.kfs; |
| |
| import java.io.IOException; |
| import java.net.URI; |
| |
| import junit.framework.TestCase; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FSDataInputStream; |
| import org.apache.hadoop.fs.FSDataOutputStream; |
| import org.apache.hadoop.fs.FileStatus; |
| import org.apache.hadoop.fs.Path; |
| |
| public class TestKosmosFileSystem extends TestCase { |
| |
| KosmosFileSystem kosmosFileSystem; |
| KFSEmulationImpl kfsEmul; |
| Path baseDir; |
| |
| @Override |
| protected void setUp() throws IOException { |
| Configuration conf = new Configuration(); |
| |
| kfsEmul = new KFSEmulationImpl(conf); |
| kosmosFileSystem = new KosmosFileSystem(kfsEmul); |
| // a dummy URI; we are not connecting to any setup here |
| kosmosFileSystem.initialize(URI.create("kfs:///"), conf); |
| baseDir = new Path(System.getProperty("test.build.data", "/tmp" ) + |
| "/kfs-test"); |
| } |
| |
| @Override |
| protected void tearDown() throws Exception { |
| |
| } |
| |
| // @Test |
| // Check all the directory API's in KFS |
| public void testDirs() throws Exception { |
| Path subDir1 = new Path("dir.1"); |
| |
| // make the dir |
| kosmosFileSystem.mkdirs(baseDir); |
| assertTrue(kosmosFileSystem.isDirectory(baseDir)); |
| kosmosFileSystem.setWorkingDirectory(baseDir); |
| |
| kosmosFileSystem.mkdirs(subDir1); |
| assertTrue(kosmosFileSystem.isDirectory(subDir1)); |
| |
| assertFalse(kosmosFileSystem.exists(new Path("test1"))); |
| assertFalse(kosmosFileSystem.isDirectory(new Path("test/dir.2"))); |
| |
| FileStatus[] p = kosmosFileSystem.listStatus(baseDir); |
| assertEquals(p.length, 1); |
| |
| kosmosFileSystem.delete(baseDir, true); |
| assertFalse(kosmosFileSystem.exists(baseDir)); |
| } |
| |
| // @Test |
| // Check the file API's |
| public void testFiles() throws Exception { |
| Path subDir1 = new Path("dir.1"); |
| Path file1 = new Path("dir.1/foo.1"); |
| Path file2 = new Path("dir.1/foo.2"); |
| |
| kosmosFileSystem.mkdirs(baseDir); |
| assertTrue(kosmosFileSystem.isDirectory(baseDir)); |
| kosmosFileSystem.setWorkingDirectory(baseDir); |
| |
| kosmosFileSystem.mkdirs(subDir1); |
| |
| FSDataOutputStream s1 = kosmosFileSystem.create(file1, true, 4096, (short) 1, (long) 4096, null); |
| FSDataOutputStream s2 = kosmosFileSystem.create(file2, true, 4096, (short) 1, (long) 4096, null); |
| |
| s1.close(); |
| s2.close(); |
| |
| FileStatus[] p = kosmosFileSystem.listStatus(subDir1); |
| assertEquals(p.length, 2); |
| |
| kosmosFileSystem.delete(file1, true); |
| p = kosmosFileSystem.listStatus(subDir1); |
| assertEquals(p.length, 1); |
| |
| kosmosFileSystem.delete(file2, true); |
| p = kosmosFileSystem.listStatus(subDir1); |
| assertEquals(p.length, 0); |
| |
| kosmosFileSystem.delete(baseDir, true); |
| assertFalse(kosmosFileSystem.exists(baseDir)); |
| } |
| |
| // @Test |
| // Check file/read write |
| public void testFileIO() throws Exception { |
| Path subDir1 = new Path("dir.1"); |
| Path file1 = new Path("dir.1/foo.1"); |
| |
| kosmosFileSystem.mkdirs(baseDir); |
| assertTrue(kosmosFileSystem.isDirectory(baseDir)); |
| kosmosFileSystem.setWorkingDirectory(baseDir); |
| |
| kosmosFileSystem.mkdirs(subDir1); |
| |
| FSDataOutputStream s1 = kosmosFileSystem.create(file1, true, 4096, (short) 1, (long) 4096, null); |
| |
| int bufsz = 4096; |
| byte[] data = new byte[bufsz]; |
| |
| for (int i = 0; i < data.length; i++) |
| data[i] = (byte) (i % 16); |
| |
| // write 4 bytes and read them back; read API should return a byte per call |
| s1.write(32); |
| s1.write(32); |
| s1.write(32); |
| s1.write(32); |
| // write some data |
| s1.write(data, 0, data.length); |
| // flush out the changes |
| s1.close(); |
| |
| // Read the stuff back and verify it is correct |
| FSDataInputStream s2 = kosmosFileSystem.open(file1, 4096); |
| int v; |
| long nread = 0; |
| |
| v = s2.read(); |
| assertEquals(v, 32); |
| v = s2.read(); |
| assertEquals(v, 32); |
| v = s2.read(); |
| assertEquals(v, 32); |
| v = s2.read(); |
| assertEquals(v, 32); |
| |
| assertEquals(s2.available(), data.length); |
| |
| byte[] buf = new byte[bufsz]; |
| s2.read(buf, 0, buf.length); |
| nread = s2.getPos(); |
| |
| for (int i = 0; i < data.length; i++) |
| assertEquals(data[i], buf[i]); |
| |
| assertEquals(s2.available(), 0); |
| |
| s2.close(); |
| |
| // append some data to the file |
| try { |
| s1 = kosmosFileSystem.append(file1); |
| for (int i = 0; i < data.length; i++) |
| data[i] = (byte) (i % 17); |
| // write the data |
| s1.write(data, 0, data.length); |
| // flush out the changes |
| s1.close(); |
| |
| // read it back and validate |
| s2 = kosmosFileSystem.open(file1, 4096); |
| s2.seek(nread); |
| s2.read(buf, 0, buf.length); |
| for (int i = 0; i < data.length; i++) |
| assertEquals(data[i], buf[i]); |
| |
| s2.close(); |
| } catch (Exception e) { |
| System.out.println("append isn't supported by the underlying fs"); |
| } |
| |
| kosmosFileSystem.delete(file1, true); |
| assertFalse(kosmosFileSystem.exists(file1)); |
| kosmosFileSystem.delete(subDir1, true); |
| assertFalse(kosmosFileSystem.exists(subDir1)); |
| kosmosFileSystem.delete(baseDir, true); |
| assertFalse(kosmosFileSystem.exists(baseDir)); |
| } |
| |
| } |