core/src/test/java/org/apache/james/mime4j/parser/MimeStreamParserExampleMessagesTest.java

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package org.apache.james.mime4j.parser;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;

import junit.framework.TestSuite;

import org.apache.commons.io.IOUtils;
import org.apache.james.mime4j.Charsets;
import org.apache.james.mime4j.ExampleMessageTestCase;
import org.apache.james.mime4j.ExampleMessageTestCaseFactory;
import org.apache.james.mime4j.ExampleMessageTestSuiteBuilder;
import org.apache.james.mime4j.stream.MimeConfig;
import org.junit.Assert;
import org.junit.runner.RunWith;
import org.junit.runners.AllTests;

/**
 * Test parsing of all sample messages
 */
@RunWith(AllTests.class)
public class MimeStreamParserExampleMessagesTest extends ExampleMessageTestCase {

    public static TestSuite suite() throws IOException {
        ExampleMessageTestSuiteBuilder testSuiteBuilder = new ExampleMessageTestSuiteBuilder(
                new ExampleMessageTestCaseFactory() {

                    public ExampleMessageTestCase create(final File file, final URL resource) throws IOException {
                        return new MimeStreamParserExampleMessagesTest(file, resource);
                    }

                });
        return testSuiteBuilder.build();
    }

    public MimeStreamParserExampleMessagesTest(final File file, final URL resource) {
        super(file, resource);
    }

    @Override
    public void runTest() throws Exception {
        MimeConfig config = getConfig();

        TestHandler handler = new TestHandler();
        InputStream msgstream = getResource().openStream();
        try {
            MimeStreamParser parser = new MimeStreamParser(config);
            parser.setContentHandler(handler);
            parser.parse(msgstream);

        } finally {
            msgstream.close();
        }

        String result = handler.sb.toString();

        URL xmlFileUrl = new URL(getResourceBase() + ".xml");
        try {
            String expected;
            InputStream contentstream = xmlFileUrl.openStream();
            try {
                expected = IOUtils.toString(contentstream, Charsets.ISO_8859_1.name());
            } finally {
                contentstream.close();
            }
            Assert.assertEquals(expected, result);
        } catch (FileNotFoundException ex) {
            // Create expected content template to the current directory
            File expectedFileTemplate = new File(getFilenameBase() + ".xml.expected");
            FileOutputStream outstream = new FileOutputStream(expectedFileTemplate);
            try {
                IOUtils.write(result, outstream, Charsets.ISO_8859_1.name());
            } finally {
                outstream.close();
            }
            Assert.fail("Expected file created.");
        }
    }

}