import java.io.*;
import java.util.*;
import java.util.zip.*;
import java.util.regex.*;

File jarFile = new File( basedir, "target/test-1.0.jar" );
System.out.println( "Checking for existence of " + jarFile );
if ( !jarFile.isFile() )
{
    throw new FileNotFoundException( "Missing " + jarFile );
}

ZipInputStream zis = new ZipInputStream( new FileInputStream( jarFile ) );

int count = 0;

while (true)
{
    ZipEntry entry = zis.getNextEntry();
    if ( entry == null )
    {
        break;
    }
    if ( entry.getName().equals( "META-INF/ejb-jar.xml" ) )
    {
        count++;
    }
}

zis.close();

if ( count != 1 )
{
    throw new IllegalStateException( "Wrong number of ejb-jar.xml's in archive: " + count );
}

return true;