Java tutorial
/* Copyright 2011 FIZ Karlsruhe 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. */ package de.fiz.akubra.hdfs; import static org.easymock.EasyMock.anyObject; import static org.easymock.EasyMock.createMock; import static org.easymock.EasyMock.expect; import static org.easymock.EasyMock.replay; import static org.junit.Assert.assertFalse; import static org.junit.Assert.assertNotNull; import static org.junit.Assert.assertTrue; import java.io.ByteArrayInputStream; import java.lang.reflect.Field; import java.net.URI; import java.util.Random; import org.apache.commons.io.output.ByteArrayOutputStream; import org.apache.hadoop.fs.FSDataOutputStream; import org.apache.hadoop.fs.FileStatus; import org.apache.hadoop.fs.FileSystem; import org.apache.hadoop.fs.Path; import org.junit.Before; import org.junit.Ignore; import org.junit.Test; public class HDFSBlobStoreConnectionTest { private HDFSBlobStore mockStore; private FileSystem mockFs; private URI mockId = URI.create("hdfs://localhost:9000/"); private FileStatus[] createTestFileStatus() { FileStatus[] states = new FileStatus[] { new FileStatus(1024, false, 0, 0, 0, new Path("hdfs://test1")), new FileStatus(2024, false, 0, 0, 0, new Path("hdfs://test2")), new FileStatus(3024, false, 0, 0, 0, new Path("hdfs://test3")), new FileStatus(4024, false, 0, 0, 0, new Path("hdfs://test4")), new FileStatus(5024, false, 0, 0, 0, new Path("hdfs://test5")) }; return states; } @Before public void setUp() throws Exception { mockStore = createMock(HDFSBlobStore.class); mockFs = createMock(FileSystem.class); } @Test public void testClose() throws Exception { expect(mockStore.getFilesystem()).andReturn(mockFs); expect(mockStore.getId()).andReturn(mockId); mockFs.close(); replay(mockStore, mockFs); HDFSBlobStoreConnection connection = createTestConnection(); connection.close(); } private HDFSBlobStoreConnection createTestConnection() throws Exception { HDFSBlobStoreConnection connection = new HDFSBlobStoreConnection(mockStore); Field f = HDFSBlobStoreConnection.class.getDeclaredField("hdfs"); f.setAccessible(true); f.set(connection, mockFs); return connection; } @Test public void testCreateBlob1() throws Exception { expect(mockStore.getFilesystem()).andReturn(mockFs); expect(mockStore.getId()).andReturn(mockId).times(3); expect(mockFs.exists((Path) anyObject())).andReturn(false); expect(mockFs.create((Path) anyObject())) .andReturn(new FSDataOutputStream(new ByteArrayOutputStream(20), null)); expect(mockFs.exists((Path) anyObject())).andReturn(true); replay(mockStore, mockFs); HDFSBlobStoreConnection connection = createTestConnection(); byte[] buf = new byte[4096]; new Random().nextBytes(buf); HDFSBlob b = (HDFSBlob) connection.getBlob(new ByteArrayInputStream(buf), 4096, null); assertNotNull(b); assertTrue(b.getConnection() == connection); assertTrue(b.exists()); } @Test public void testGetBlob1() throws Exception { expect(mockStore.getFilesystem()).andReturn(mockFs); expect(mockStore.getId()).andReturn(mockId).times(3); replay(mockStore, mockFs); HDFSBlobStoreConnection connection = createTestConnection(); HDFSBlob b = (HDFSBlob) connection.getBlob(new URI("hdfs://localhost:9000/test"), null); assertNotNull(b); assertTrue(b.getConnection() == connection); } @Test public void testGetBlobStore() throws Exception { expect(mockStore.getFilesystem()).andReturn(mockFs); expect(mockStore.getId()).andReturn(mockId); replay(mockStore, mockFs); HDFSBlobStoreConnection connection = createTestConnection(); assertNotNull(connection.getBlobStore()); assertTrue(connection.getBlobStore() == mockStore); assertTrue(connection.getBlobStore() instanceof HDFSBlobStore); } @Test public void testGetFileSystem() throws Exception { expect(mockStore.getFilesystem()).andReturn(mockFs); expect(mockStore.getId()).andReturn(mockId); replay(mockStore, mockFs); HDFSBlobStoreConnection connection = createTestConnection(); assertNotNull(connection.getFileSystem()); assertTrue(connection.getFileSystem() == mockFs); } @Test public void testHDFSBlobStoreConnection() throws Exception { expect(mockStore.getFilesystem()).andReturn(mockFs); expect(mockStore.getId()).andReturn(mockId); replay(mockStore, mockFs); HDFSBlobStoreConnection connection = createTestConnection(); assertNotNull(connection); } @Test public void testListBlobIds() throws Exception { expect(mockStore.getFilesystem()).andReturn(mockFs); expect(mockFs.listStatus((Path) anyObject())).andReturn(createTestFileStatus()).times(2); expect(mockStore.getId()).andReturn(URI.create("hdfs://localhost:9000/")).times(2); replay(mockStore, mockFs); HDFSBlobStoreConnection connection = createTestConnection(); HDFSIdIterator it = (HDFSIdIterator) connection.listBlobIds("/"); assertNotNull(it); } @Test public void testReopen() throws Exception { expect(mockStore.getFilesystem()).andReturn(mockFs); expect(mockStore.getId()).andReturn(mockId); mockFs.close(); replay(mockStore, mockFs); HDFSBlobStoreConnection connection = createTestConnection(); assertFalse(connection.isClosed()); connection.close(); } @Test(expected = UnsupportedOperationException.class) public void testSync() throws Exception { expect(mockStore.getFilesystem()).andReturn(mockFs); expect(mockStore.getId()).andReturn(mockId); replay(mockStore, mockFs); HDFSBlobStoreConnection connection = createTestConnection(); connection.sync(); } }