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package jaxb.osgi.test;

import junit.framework.TestCase;

import java.io.File;
import java.io.IOException;
import java.util.jar.JarFile;
import java.util.jar.Manifest;

/**
 * Tests if MANIFEST Bundle-Version has correct version format.
 *
 * @author Martin Vojtek
 */
public class OSGiBundleVersionTest extends TestCase {

    public OSGiBundleVersionTest(String name) {
        super(name);
    }

    public void testJaxbOsgiBundleVersion() throws IOException {
        String osgiJar = System.getProperty("osgi.dist");
        assertNotNull("osgi.dist not set", osgiJar);
        checkVersion(new File(osgiJar + ".jar"));
    }

    private void checkVersion(File f) throws IOException {
        System.out.println("Checking: " + f.getAbsolutePath());
        Manifest mf = new JarFile(f).getManifest();
        String version = mf.getMainAttributes().getValue("Bundle-Version");
        assertNotNull(version);
        String[] v = version.split("\\.");
        assertTrue("only <X.Y.Z> or <X.Y.Z.SNAPSHOT> is allowed but was: <" + version + ">", v.length <= 4);
        for (int i = 0; i < (4 == v.length ? v.length - 1 : v.length); i++) {
            try {
                Integer.parseInt(v[i]);
            } catch (Throwable t) {
                fail("'" + v[i] + "' is not a number");
            }
        }
    }

}
