jtulach@84: package org.apidesign.component;
jtulach@84: 
jtulach@84: import java.util.Iterator;
jtulach@84: import org.junit.BeforeClass;
jtulach@84: import org.junit.Test;
jtulach@84: import org.netbeans.junit.MockServices;
jtulach@84: import org.openide.util.Lookup;
jtulach@84: import static org.junit.Assert.*;
jtulach@84: import org.openide.util.Lookup.Result;
jtulach@84: import org.openide.util.LookupEvent;
jtulach@84: import org.openide.util.LookupListener;
jtulach@84: 
jtulach@84: public class InjectionSlotChangesTest {
jtulach@84:     public InjectionSlotChangesTest() {
jtulach@84:     }
jtulach@84: 
jtulach@84:     @BeforeClass
jtulach@84:     public static void setUpClass() throws Exception {
jtulach@84:         // this is a support for "dynamic" registration of any class
jtulach@84:         // into the global pool of Lookup.getDefault() and java.util.ServiceLoader
jtulach@84:         // either in @BeforeClass or @Before register 
jtulach@84:         // classes of the mock instances that you want your code 
jtulach@84:         // to find
jtulach@84:         MockServices.setServices(ImplOne.class, ImplTwo.class);
jtulach@84:     }
jtulach@84: 
jtulach@84:     @Test
jtulach@84:     public void multiSlot() {
jtulach@84:         Iterator<? extends InjectionSlot> it = InjectionSlot.multiSlot().iterator();
jtulach@84:         assertTrue("Has at least one", it.hasNext());
jtulach@84:         assertEquals("The first is ImplOne", ImplOne.class, it.next().getClass());
jtulach@84:         assertTrue("Has two", it.hasNext());
jtulach@84:         assertEquals("The second is ImplTwo", ImplTwo.class, it.next().getClass());
jtulach@84:         assertFalse("No other instance registered", it.hasNext());
jtulach@84: 
jtulach@84:         // BEGIN: lookup.listener
jtulach@84:         class Listener implements LookupListener {
jtulach@84:             int cnt;
jtulach@84:             public void resultChanged(LookupEvent arg0) {
jtulach@84:                 cnt++;
jtulach@84:             }
jtulach@84:         }
jtulach@84:         Listener listener = new Listener();
jtulach@132:         Lookup.Result<InjectionSlot> res = 
jtulach@132:             Lookup.getDefault().lookupResult(InjectionSlot.class);
jtulach@84:         res.addLookupListener(listener);
jtulach@84:         assertEquals("Two services now", 2, res.allInstances().size());
jtulach@84:         
jtulach@84:         MockServices.setServices(ImplTwo.class);
jtulach@84:         
jtulach@84:         assertEquals("One service only", 1, res.allInstances().size());
jtulach@84:         assertEquals("One change in listener", 1, listener.cnt);
jtulach@132:         assertEquals(
jtulach@132:             "The second is ImplTwo", 
jtulach@132:             ImplTwo.class, 
jtulach@132:             res.allInstances().iterator().next().getClass()
jtulach@132:         );
jtulach@84:         // END: lookup.listener
jtulach@84:     }
jtulach@84: 
jtulach@84:     public static final class ImplOne extends InjectionSlot {
jtulach@84:     }
jtulach@84:     public static final class ImplTwo extends InjectionSlot {
jtulach@84:     }
jtulach@84: }