MimeStreamParserExampleMessagesTest.java

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package org.apache.james.mime4j.parser;

import org.apache.commons.io.IOUtils;
import org.apache.james.mime4j.parser.MimeStreamParser;
import org.apache.log4j.BasicConfigurator;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

/**
 * Creates a TestSuite running the test for each .msg file in the test resouce folder.
 * Allow running of a single test from Unit testing GUIs
 */
public class MimeStreamParserExampleMessagesTest extends TestCase {

    private File file;


    public MimeStreamParserExampleMessagesTest(String testName) {
        this(testName, MimeStreamParserExampleMessagesTestSuite.getFile(testName));
    }

    public MimeStreamParserExampleMessagesTest(String name, File testFile) {
        super(name);
        this.file = testFile;
    }

    @Override
    public void setUp() {
        BasicConfigurator.resetConfiguration();
        BasicConfigurator.configure();
    }
   
    @Override
    protected void runTest() throws Throwable {
        MimeStreamParser parser = null;
        TestHandler handler = null;
        MimeEntityConfig config = new MimeEntityConfig();
        config.setMaxLineLen(-1);
        parser = new MimeStreamParser(config);
        handler = new TestHandler();
        
        System.out.println("Parsing " + file.getName());
        parser.setContentHandler(handler);
        parser.parse(new FileInputStream(file));
        
        String result = handler.sb.toString();
        String xmlFile = file.getAbsolutePath().substring(0, file.getAbsolutePath().lastIndexOf('.')) + ".xml";
        String xmlFileMime4j = file.getAbsolutePath().substring(0, file.getAbsolutePath().lastIndexOf('.')) + ".mime4j.xml";
        
        try {
            String expected = IOUtils.toString(new FileInputStream(xmlFile), "ISO8859-1");
            assertEquals("Error parsing " + file.getName(), expected, result);
        } catch (FileNotFoundException e) {
            FileOutputStream fos = new FileOutputStream(xmlFileMime4j);
            fos.write(result.getBytes());
            fos.flush();
            fos.close();
            fail("XML file not found: generated a file with the expected result!");
        }
    }

    public static Test suite() throws IOException {
        return new MimeStreamParserExampleMessagesTestSuite();
    }

    
    static class MimeStreamParserExampleMessagesTestSuite extends TestSuite {

        private static final File TESTS_FOLDER = new File("src/test/resources/testmsgs");

        public MimeStreamParserExampleMessagesTestSuite() throws IOException {
            super();
            File dir = TESTS_FOLDER;
            File[] files = dir.listFiles();
            
            for (File f : files) {
                if (f.getName().toLowerCase().endsWith(".msg")) {
                    addTest(new MimeStreamParserExampleMessagesTest(f.getName().substring(0, f.getName().length()-4), f));
                }
            }
        }
        
        public static File getFile(String name) {
            return new File(TESTS_FOLDER.getAbsolutePath()+File.separator+name+".msg");
        }

    }
}