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Viewing changes to src/test/java/org/apache/commons/compress/utils/IOUtilsTest.java

  • Committer: Package Import Robot
  • Author(s): Emmanuel Bourg
  • Date: 2014-05-19 18:13:11 UTC
  • mfrom: (1.1.7)
  • Revision ID: package-import@ubuntu.com-20140519181311-qw0qtmfj7oahttca
Tags: 1.8.1-1
* New upstream release
* Removed 01-optional-xz-dependency.patch
* Updated the OSGi metadata
* Moved the package to Git

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src/test/java/org/apache/commons/compress/utils/IOUtilsTest.java
 
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/*
 
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 * Licensed to the Apache Software Foundation (ASF) under one or more
 
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 * contributor license agreements.  See the NOTICE file distributed with
 
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 * this work for additional information regarding copyright ownership.
 
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 * The ASF licenses this file to You under the Apache License, Version 2.0
 
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 * (the "License"); you may not use this file except in compliance with
 
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 * the License.  You may obtain a copy of the License at
 
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 * 
 
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 *      http://www.apache.org/licenses/LICENSE-2.0
 
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 * 
 
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 * Unless required by applicable law or agreed to in writing, software
 
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 * distributed under the License is distributed on an "AS IS" BASIS,
 
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 
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 * See the License for the specific language governing permissions and
 
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 * limitations under the License.
 
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 */
 
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package org.apache.commons.compress.utils;
 
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import java.io.ByteArrayInputStream;
 
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import java.io.FilterInputStream;
 
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import java.io.InputStream;
 
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import java.io.IOException;
 
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import org.junit.Assert;
 
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import org.junit.Test;
 
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public class IOUtilsTest {
 
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    private interface StreamWrapper {
 
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        InputStream wrap(InputStream toWrap);
 
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    }
 
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    @Test
 
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    public void skipUsingSkip() throws Exception {
 
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        skip(new StreamWrapper() {
 
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                public InputStream wrap(InputStream toWrap) {
 
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                    return toWrap;
 
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                }
 
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            });
 
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    }
 
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    @Test
 
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    public void skipUsingRead() throws Exception {
 
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        skip(new StreamWrapper() {
 
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                public InputStream wrap(InputStream toWrap) {
 
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                    return new FilterInputStream(toWrap) {
 
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                        public long skip(long s) {
 
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                            return 0;
 
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                        }
 
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                    };
 
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                }
 
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            });
 
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    }
 
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    @Test
 
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    public void skipUsingSkipAndRead() throws Exception {
 
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        skip(new StreamWrapper() {
 
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                public InputStream wrap(final InputStream toWrap) {
 
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                    return new FilterInputStream(toWrap) {
 
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                        boolean skipped;
 
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                        public long skip(long s) throws IOException {
 
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                            if (!skipped) {
 
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                                toWrap.skip(5);
 
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                                skipped = true;
 
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                                return 5;
 
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                            }
 
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                            return 0;
 
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                        }
 
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                    };
 
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                }
 
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            });
 
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    }
 
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    private void skip(StreamWrapper wrapper) throws Exception {
 
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        ByteArrayInputStream in = new ByteArrayInputStream(new byte[] {
 
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                1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11
 
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            });
 
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        InputStream sut = wrapper.wrap(in);
 
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        Assert.assertEquals(10, IOUtils.skip(sut, 10));
 
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        Assert.assertEquals(11, sut.read());
 
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    }
 
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}