TestBase.java :  » IDE-Netbeans » derby » org » netbeans » modules » derby » test » Java Open Source

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package org.netbeans.modules.derby.test;

import java.io.File;
import java.io.IOException;
import org.netbeans.junit.NbTestCase;
import org.openide.filesystems.Repository;
import org.openide.util.Lookup;
import org.openide.util.lookup.AbstractLookup;
import org.openide.util.lookup.InstanceContent;
import org.openide.util.lookup.Lookups;
import org.openide.util.lookup.ProxyLookup;

/**
 * Common ancestor for all test classes.
 *
 * @author Andrei Badea
 */
public class TestBase extends NbTestCase {

    static {
        System.setProperty("org.openide.util.Lookup", Lkp.class.getName());
        assertEquals("Unable to set the default lookup!", Lkp.class, Lookup.getDefault().getClass());
        
        ((Lkp)Lookup.getDefault()).addFixed(new RepositoryImpl());
        assertEquals("The default Repository is not our repository!", RepositoryImpl.class, Lookup.getDefault().lookup(Repository.class).getClass());
    }
    
    public static void setLookup(Object[] instance) {
        ((Lkp)Lookup.getDefault()).setLookup(instance);
    }
    
    public TestBase(String name) {
        super(name);
    }
    
    public static void createFakeDerbyInstallation(File location) throws IOException {
        if (!location.mkdirs()) {
            throw new IOException("Could not create " + location.getAbsolutePath());
        }
        File lib = new File(location, "lib");
        if (!lib.mkdir()) {
            throw new IOException("Could not create " + lib.getAbsolutePath());
        }
        new File(lib, "derby.jar").createNewFile();
    }
    
    public static final class Lkp extends ProxyLookup {
        
        private InstanceContent fixed = new InstanceContent();
        private Lookup fixedLookup = new AbstractLookup(fixed);
        
        public Lkp() {
            setLookup(new Object[0]);
        }
        
        void setLookup(Object[] instances) {
            ClassLoader l = TestBase.class.getClassLoader();
            setLookups(new Lookup[] {
                Lookups.metaInfServices(l),
                Lookups.singleton(l),
                fixedLookup,
                Lookups.fixed(instances),
            });
        }
        
        void addFixed(Object instance) {
            fixed.add(instance);
        }
    }
}