com.adaptris.core.lms.ZipFileBackedMessageTest.java Source code

Introduction

Here is the source code for com.adaptris.core.lms.ZipFileBackedMessageTest.java

Source

/*
 * Copyright 2015 Adaptris Ltd.
 * 
 * Licensed 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 com.adaptris.core.lms;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNotSame;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException;
import java.util.zip.ZipFile;
import java.util.zip.ZipInputStream;

import org.apache.commons.io.IOUtils;
import org.junit.Before;
import org.junit.Test;

import com.adaptris.core.BaseCase;
import com.adaptris.core.lms.ZipFileBackedMessageFactory.CompressionMode;

public class ZipFileBackedMessageTest extends FileBackedMessageTest {

    private ZipFileBackedMessageFactory mf;

    @Before
    public void setup() {
        mf = new ZipFileBackedMessageFactory();
        mf.setCompressionMode(CompressionMode.Both);
    }

    /**
     * @see com.adaptris.core.AdaptrisMessageCase#getMessageFactory()
     */
    @Override
    protected ZipFileBackedMessageFactory getMessageFactory() {
        return mf;
    }

    /**
     * This tests inputs a compressed file and expects uncompressed data to come out.
     */
    @Test
    public void testInitFromFile() throws Exception {
        ZipFileBackedMessageFactory factory = getMessageFactory();
        factory.setCompressionMode(CompressionMode.Uncompress); // We are feeding a zip file, so the mode must be Uncompress or Both
        FileBackedMessage orig = (FileBackedMessage) factory.newMessage();

        File srcFile = new File(BaseCase.PROPERTIES.getProperty("msg.initFromZipFile"));
        orig.initialiseFrom(srcFile);

        // Uncompressed size is 185 bytes
        assertEquals("file size ", 185, orig.getSize());
        assertEquals("payload size ", 185, orig.getPayload().length);
    }

    /**
     * This tests inputs a compressed stream and expects uncompressed data to come out.
     */
    @Test
    public void testUncompressStream() throws Exception {
        ZipFileBackedMessageFactory factory = getMessageFactory();
        factory.setCompressionMode(CompressionMode.Uncompress);
        FileBackedMessage orig = (FileBackedMessage) factory.newMessage();

        File srcFile = new File(BaseCase.PROPERTIES.getProperty("msg.initFromZipFile"));
        orig.initialiseFrom(srcFile);
        try (InputStream in = orig.getInputStream(); OutputStream out = orig.getOutputStream()) {
            IOUtils.copy(in, out);
        }
    }

    /**
     * This tests inputs an uncompressed file and expects an Exception
     */
    @Test(expected = UnsupportedOperationException.class)
    public void testInitFromUncompressedFile() throws Exception {
        ZipFileBackedMessageFactory factory = getMessageFactory();
        factory.setCompressionMode(CompressionMode.Compress);
        FileBackedMessage orig = (FileBackedMessage) factory.newMessage();

        File srcFile = new File(BaseCase.PROPERTIES.getProperty("msg.initFromFile"));
        orig.initialiseFrom(srcFile);

        // Exception expected
    }

    @Test
    public void testUncompressedFile_FailFast_False() throws Exception {
        ZipFileBackedMessageFactory factory = getMessageFactory();
        factory.setStrict(false);
        factory.setCompressionMode(CompressionMode.Uncompress);
        FileBackedMessage orig = (FileBackedMessage) factory.newMessage();
        File srcFile = new File(BaseCase.PROPERTIES.getProperty("msg.initFromFile"));
        orig.initialiseFrom(srcFile);
        assertEquals(srcFile.length(), orig.getSize());
        assertNotNull(orig.getInputStream());
    }

    /**
     * This tests inputs an uncompressed stream and expects an Exception because we tell the factory that we are going to send it
     * compressed data (compressionMode=Uncompress)
     */
    @Test(expected = ZipException.class)
    public void testInitFromUncompressedStream() throws Exception {
        ZipFileBackedMessageFactory factory = getMessageFactory();
        factory.setCompressionMode(CompressionMode.Uncompress);
        FileBackedMessage orig = (FileBackedMessage) factory.newMessage();

        File srcFile = new File(BaseCase.PROPERTIES.getProperty("msg.initFromFile"));

        try (InputStream in = new FileInputStream(srcFile); OutputStream out = orig.getOutputStream()) {
            IOUtils.copy(in, out);
        }
        // Now try to get the input stream. This has to throw a ZipException because the stream is not a zip file
        orig.getInputStream();
    }

    @Test
    @Override
    public void testCurrentSource() throws Exception {
        ZipFileBackedMessageFactory factory = getMessageFactory();
        FileBackedMessage orig = (FileBackedMessage) getMessageFactory().newMessage();
        assertNotNull(orig.currentSource());
        File srcFile = new File(BaseCase.PROPERTIES.getProperty("msg.initFromZipFile"));
        orig.initialiseFrom(srcFile);
        assertNotSame(srcFile.length(), orig.getSize());
        assertNotSame(srcFile.length(), orig.getPayload().length);
    }

    /**
     * This tests creates a compressed file
     */
    @Test
    public void testCreateCompressedFile() throws Exception {
        ZipFileBackedMessageFactory factory = getMessageFactory();
        factory.setCompressionMode(CompressionMode.Compress);
        FileBackedMessage orig = (FileBackedMessage) factory.newMessage();

        File srcFile = new File(BaseCase.PROPERTIES.getProperty("msg.initFromFile"));
        try (FileInputStream in = new FileInputStream(srcFile); OutputStream out = orig.getOutputStream()) {
            IOUtils.copy(in, out);
        }

        // File should now be compressed. Check if it's a zip file and if the compressed size equals the input file size
        try (ZipFile zipFile = new ZipFile(orig.currentSource())) {
            long size = 0;
            Enumeration<? extends ZipEntry> entries = zipFile.entries();
            while (entries.hasMoreElements()) {
                ZipEntry entry = entries.nextElement();
                size += entry.getSize();
            }

            assertEquals("message size", orig.getSize(), size);
            assertEquals("payload size", srcFile.length(), size);
        }

        // Check if the InputStream from the message also yields compressed data
        try (ZipInputStream zin = new ZipInputStream(orig.getInputStream());
                ByteArrayOutputStream out = new ByteArrayOutputStream()) {
            zin.getNextEntry();
            IOUtils.copy(zin, out);
            assertEquals("payload size", srcFile.length(), out.size());
        }
    }

}