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package org.jvnet.jaxbcommons.tests;

import java.io.File;
import java.util.Collection;

import javax.xml.bind.JAXBContext;

import junit.framework.TestCase;

import org.apache.commons.io.FileUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;



public abstract class AbstractSamplesTest extends TestCase {

	protected Log logger = LogFactory.getLog(getClass());

	protected abstract String getContextPath();

	protected abstract void checkSample(JAXBContext context, File sample)
			throws Exception;

	protected void checkSample(File sample) throws Exception {
		logger.debug("Checking sample [" + sample.getName() + "].");
		final JAXBContext context = createContext();
		checkSample(context, sample);
	}

	public void testSamples() throws Exception {
		logger.debug("Testing samples.");
		final File[] sampleFiles = getSampleFiles();

		for (int index = 0; index < sampleFiles.length; index++) {
			final File sampleFile = sampleFiles[index];
			checkSample(sampleFile);
		}
		logger.debug("Finished testing samples.");
	}

	protected File getBaseDir() {
		try {
			return (new File(getClass().getProtectionDomain().getCodeSource()
					.getLocation().getFile())).getParentFile().getParentFile()
					.getAbsoluteFile();
		} catch (Exception ex) {
			throw new AssertionError(ex);
		}
	}

	protected File getSamplesDirectory() {
		return new File(getBaseDir(), getSamplesDirectoryName());
	}

	public static final String DEFAULT_SAMPLES_DIRECTORY_NAME = "src/test/samples";

	protected String getSamplesDirectoryName() {
		return DEFAULT_SAMPLES_DIRECTORY_NAME;
	}

	protected File[] getSampleFiles() {
		final Collection files = FileUtils.listFiles(getSamplesDirectory(),
				new String[] { "xml" }, true);
		return (File[]) files.toArray(new File[files.size()]);
	}

	protected JAXBContext createContext() throws Exception {
		return JAXBContext.newInstance(getContextPath());
	}

}