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Viewing changes to src/test/java/org/apache/james/mime4j/storage/StorageProviderTest.java

  • Committer: Bazaar Package Importer
  • Author(s): David Paleino
  • Date: 2010-07-13 09:28:28 UTC
  • Revision ID: james.westby@ubuntu.com-20100713092828-g6wafdtidgmtx7su
Tags: upstream-0.6
Import upstream version 0.6

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src/test/java/org/apache/james/mime4j/storage/StorageProviderTest.java
 
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/****************************************************************
 
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 * Licensed to the Apache Software Foundation (ASF) under one   *
 
3
 * or more contributor license agreements.  See the NOTICE file *
 
4
 * distributed with this work for additional information        *
 
5
 * regarding copyright ownership.  The ASF licenses this file   *
 
6
 * to you under the Apache License, Version 2.0 (the            *
 
7
 * "License"); you may not use this file except in compliance   *
 
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 * with the License.  You may obtain a copy of the License at   *
 
9
 *                                                              *
 
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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,   *
 
13
 * software distributed under the License is distributed on an  *
 
14
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
 
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 * KIND, either express or implied.  See the License for the    *
 
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 * specific language governing permissions and limitations      *
 
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 * under the License.                                           *
 
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 ****************************************************************/
 
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package org.apache.james.mime4j.storage;
 
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import java.io.ByteArrayInputStream;
 
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import java.io.ByteArrayOutputStream;
 
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import java.io.IOException;
 
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import org.apache.james.mime4j.codec.CodecUtil;
 
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import junit.framework.TestCase;
 
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public class StorageProviderTest extends TestCase {
 
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    public void testMemoryStorageProvider() throws Exception {
 
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        StorageProvider provider = new MemoryStorageProvider();
 
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        testReadWrite(provider, 0);
 
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        testReadWrite(provider, 1);
 
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        testReadWrite(provider, 1024);
 
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        testReadWrite(provider, 20000);
 
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        testDelete(provider);
 
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    }
 
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    public void testTempFileStorageProvider() throws Exception {
 
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        StorageProvider provider = new TempFileStorageProvider();
 
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        testReadWrite(provider, 0);
 
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        testReadWrite(provider, 1);
 
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        testReadWrite(provider, 1024);
 
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        testReadWrite(provider, 20000);
 
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        testDelete(provider);
 
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    }
 
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    public void testThresholdStorageProvider() throws Exception {
 
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        final int threshold = 5000;
 
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        StorageProvider backend = new TempFileStorageProvider();
 
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        StorageProvider provider = new ThresholdStorageProvider(backend,
 
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                threshold);
 
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        testReadWrite(provider, 0);
 
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        testReadWrite(provider, 1);
 
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        testReadWrite(provider, threshold - 1);
 
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        testReadWrite(provider, threshold);
 
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        testReadWrite(provider, threshold + 1);
 
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        testReadWrite(provider, 2 * threshold);
 
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        testReadWrite(provider, 10 * threshold);
 
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        testDelete(provider);
 
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    }
 
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    public void testCipherStorageProvider() throws Exception {
 
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        StorageProvider backend = new TempFileStorageProvider();
 
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        StorageProvider provider = new CipherStorageProvider(backend);
 
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        testReadWrite(provider, 0);
 
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        testReadWrite(provider, 1);
 
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        testReadWrite(provider, 1024);
 
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        testReadWrite(provider, 20000);
 
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        testDelete(provider);
 
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    }
 
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    private void testReadWrite(StorageProvider provider, int size)
 
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            throws IOException {
 
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        testStore(provider, size);
 
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        testCreateStorageOutputStream(provider, size);
 
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    }
 
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    private void testStore(StorageProvider provider, int size)
 
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            throws IOException {
 
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        byte[] data = createData(size);
 
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        assertEquals(size, data.length);
 
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        Storage storage = provider.store(new ByteArrayInputStream(data));
 
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        ByteArrayOutputStream baos = new ByteArrayOutputStream();
 
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        CodecUtil.copy(storage.getInputStream(), baos);
 
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        verifyData(data, baos.toByteArray());
 
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    }
 
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    private void testCreateStorageOutputStream(StorageProvider provider,
 
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            int size) throws IOException {
 
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        byte[] data = createData(size);
 
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        assertEquals(size, data.length);
 
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        StorageOutputStream out = provider.createStorageOutputStream();
 
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        CodecUtil.copy(new ByteArrayInputStream(data), out);
 
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        Storage storage = out.toStorage();
 
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        ByteArrayOutputStream baos = new ByteArrayOutputStream();
 
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        CodecUtil.copy(storage.getInputStream(), baos);
 
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        verifyData(data, baos.toByteArray());
 
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    }
 
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    private void verifyData(byte[] expected, byte[] actual) {
 
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        assertEquals(expected.length, actual.length);
 
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        for (int i = 0; i < expected.length; i++) {
 
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            assertEquals(expected[i], actual[i]);
 
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        }
 
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    }
 
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    private byte[] createData(int size) {
 
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        byte[] data = new byte[size];
 
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        for (int i = 0; i < size; i++) {
 
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            data[i] = (byte) i;
 
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        }
 
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        return data;
 
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    }
 
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    private void testDelete(StorageProvider provider) throws IOException {
 
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        Storage storage = provider.store(new ByteArrayInputStream(
 
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                createData(512)));
 
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        storage.delete();
 
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        // getInputStream has to throw an IllegalStateException
 
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        try {
 
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            storage.getInputStream();
 
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            fail();
 
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        } catch (IllegalStateException expected) {
 
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        }
 
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        // invoking delete a second time should not have any effect
 
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        storage.delete();
 
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    }
 
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}