| /* |
| * 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.vfs2; |
| |
| import org.apache.commons.vfs2.util.RandomAccessMode; |
| import org.junit.Test; |
| |
| /** |
| * Random read-only test case for file providers. |
| * |
| */ |
| public class ProviderRandomReadTests extends AbstractProviderTestCase { |
| |
| private static final String TEST_DATA = "This is a test file."; |
| |
| /** |
| * Returns the capabilities required by the tests of this test case. |
| */ |
| @Override |
| protected Capability[] getRequiredCapabilities() { |
| return new Capability[] { Capability.GET_TYPE, Capability.RANDOM_ACCESS_READ }; |
| } |
| |
| /** |
| * Read a file |
| */ |
| @Test |
| public void testRandomRead() throws Exception { |
| try (FileObject file = getReadFolder().resolveFile("file1.txt")) { |
| final RandomAccessContent ra = file.getContent().getRandomAccessContent(RandomAccessMode.READ); |
| |
| // read first byte |
| byte c = ra.readByte(); |
| assertEquals(TEST_DATA.charAt(0), c); |
| assertEquals("fp", 1, ra.getFilePointer()); |
| |
| // start at pos 4 |
| ra.seek(3); |
| c = ra.readByte(); |
| assertEquals(TEST_DATA.charAt(3), c); |
| assertEquals("fp", 4, ra.getFilePointer()); |
| |
| c = ra.readByte(); |
| assertEquals(TEST_DATA.charAt(4), c); |
| assertEquals("fp", 5, ra.getFilePointer()); |
| |
| // restart at pos 4 |
| ra.seek(3); |
| c = ra.readByte(); |
| assertEquals(TEST_DATA.charAt(3), c); |
| assertEquals("fp", 4, ra.getFilePointer()); |
| |
| c = ra.readByte(); |
| assertEquals(TEST_DATA.charAt(4), c); |
| assertEquals("fp", 5, ra.getFilePointer()); |
| |
| // advance to pos 11 |
| ra.seek(10); |
| c = ra.readByte(); |
| assertEquals(TEST_DATA.charAt(10), c); |
| assertEquals("fp", 11, ra.getFilePointer()); |
| |
| c = ra.readByte(); |
| assertEquals(TEST_DATA.charAt(11), c); |
| assertEquals("fp", 12, ra.getFilePointer()); |
| } |
| } |
| } |