| /* |
| * 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.compress.utils; |
| |
| import static org.junit.Assert.assertArrayEquals; |
| import static org.junit.Assert.assertEquals; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| |
| import org.junit.Test; |
| |
| public class CountingStreamTest { |
| |
| @Test |
| public void output() throws Exception { |
| // I don't like "test all at once" tests either, but the class |
| // is so trivial |
| ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
| CountingOutputStream o = new CountingOutputStream(bos); |
| o.write(1); |
| assertEquals(1, o.getBytesWritten()); |
| o.write(new byte[] { 2, 3 }); |
| assertEquals(3, o.getBytesWritten()); |
| o.write(new byte[] { 2, 3, 4, 5, }, 2, 1); |
| assertEquals(4, o.getBytesWritten()); |
| o.count(-1); |
| assertEquals(4, o.getBytesWritten()); |
| o.count(-2); |
| assertEquals(2, o.getBytesWritten()); |
| o.close(); |
| assertArrayEquals(new byte[] { 1, 2, 3, 4 }, bos.toByteArray()); |
| } |
| |
| @Test |
| public void input() throws Exception { |
| // I don't like "test all at once" tests either, but the class |
| // is so trivial |
| ByteArrayInputStream bis = |
| new ByteArrayInputStream(new byte[] { 1, 2, 3, 4 }); |
| CountingInputStream i = new CountingInputStream(bis); |
| assertEquals(1, i.read()); |
| assertEquals(1, i.getBytesRead()); |
| byte[] b = new byte[2]; |
| i.read(b); |
| assertEquals(3, i.getBytesRead()); |
| assertArrayEquals(new byte[] { 2, 3 }, b); |
| b = new byte[3]; |
| i.read(b, 1, 1); |
| assertArrayEquals(new byte[] { 0, 4, 0 }, b); |
| assertEquals(4, i.getBytesRead()); |
| i.count(-1); |
| assertEquals(4, i.getBytesRead()); |
| i.count(-2); |
| assertEquals(2, i.getBytesRead()); |
| i.close(); |
| } |
| |
| } |