| /* |
| * 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.commons.vfs.test; |
| |
| import org.apache.commons.vfs.Capability; |
| import org.apache.commons.vfs.FileObject; |
| import org.apache.commons.vfs.RandomAccessContent; |
| import org.apache.commons.vfs.util.RandomAccessMode; |
| |
| /** |
| * RanomdRead-only test cases for file providers. |
| * |
| * @author <a href="mailto:imario@apache.org">Mario Ivankovits</a> |
| * @version $Revision$ $Date$ |
| */ |
| public class ProviderRandomReadTests |
| extends AbstractProviderTestCase |
| { |
| private final String TEST_DATA = "This is a test file."; |
| |
| /** |
| * Returns the capabilities required by the tests of this test case. |
| */ |
| protected Capability[] getRequiredCaps() |
| { |
| return new Capability[] |
| { |
| Capability.GET_TYPE, |
| Capability.RANDOM_ACCESS_READ |
| }; |
| } |
| |
| /** |
| * Read a file |
| */ |
| public void testRandomRead() throws Exception |
| { |
| FileObject file = null; |
| try |
| { |
| file = getReadFolder().resolveFile("file1.txt"); |
| RandomAccessContent ra = file.getContent().getRandomAccessContent(RandomAccessMode.READ); |
| |
| // read first byte |
| byte c = ra.readByte(); |
| assertEquals(c, TEST_DATA.charAt(0)); |
| assertEquals("fp", ra.getFilePointer(), 1); |
| |
| // start at pos 4 |
| ra.seek(3); |
| c = ra.readByte(); |
| assertEquals(c, TEST_DATA.charAt(3)); |
| assertEquals("fp", ra.getFilePointer(), 4); |
| |
| c = ra.readByte(); |
| assertEquals(c, TEST_DATA.charAt(4)); |
| assertEquals("fp", ra.getFilePointer(), 5); |
| |
| // restart at pos 4 |
| ra.seek(3); |
| c = ra.readByte(); |
| assertEquals(c, TEST_DATA.charAt(3)); |
| assertEquals("fp", ra.getFilePointer(), 4); |
| |
| c = ra.readByte(); |
| assertEquals(c, TEST_DATA.charAt(4)); |
| assertEquals("fp", ra.getFilePointer(), 5); |
| |
| // advance to pos 11 |
| ra.seek(10); |
| c = ra.readByte(); |
| assertEquals(c, TEST_DATA.charAt(10)); |
| assertEquals("fp", ra.getFilePointer(), 11); |
| |
| c = ra.readByte(); |
| assertEquals(c, TEST_DATA.charAt(11)); |
| assertEquals("fp", ra.getFilePointer(), 12); |
| } |
| finally |
| { |
| if (file != null) |
| { |
| file.close(); |
| } |
| } |
| } |
| } |