| /** |
| * 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.cassandra.io.util; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.nio.charset.Charset; |
| import java.nio.file.Files; |
| |
| import org.junit.Test; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| public class FileUtilsTest |
| { |
| |
| @Test |
| public void testTruncate() throws IOException |
| { |
| File file = FileUtils.createTempFile("testTruncate", "1"); |
| final String expected = "The quick brown fox jumps over the lazy dog"; |
| |
| Files.write(file.toPath(), expected.getBytes()); |
| assertTrue(file.exists()); |
| |
| byte[] b = Files.readAllBytes(file.toPath()); |
| assertEquals(expected, new String(b, Charset.forName("UTF-8"))); |
| |
| FileUtils.truncate(file.getAbsolutePath(), 10); |
| b = Files.readAllBytes(file.toPath()); |
| assertEquals("The quick ", new String(b, Charset.forName("UTF-8"))); |
| |
| FileUtils.truncate(file.getAbsolutePath(), 0); |
| b = Files.readAllBytes(file.toPath()); |
| assertEquals(0, b.length); |
| } |
| |
| } |