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package org.netbeans.spi.project.support.ant;
import java.lang.ref.Reference;
import java.lang.ref.WeakReference;
import java.util.Collections;
import java.util.HashMap;
import org.netbeans.junit.NbTestCase;
import org.openide.util.test.MockChangeListener;
/**
* @author Jesse Glick
*/
public class FilterPropertyProviderTest extends NbTestCase {
public FilterPropertyProviderTest(String name) {
super(name);
}
public void testDelegatingPropertyProvider() throws Exception {
AntBasedTestUtil.TestMutablePropertyProvider mpp = new AntBasedTestUtil.TestMutablePropertyProvider(new HashMap<String,String>());
DPP dpp = new DPP(mpp);
MockChangeListener l = new MockChangeListener();
dpp.addChangeListener(l);
assertEquals("initially empty", Collections.emptyMap(), dpp.getProperties());
mpp.defs.put("foo", "bar");
mpp.mutated();
l.assertEvent();
assertEquals("now right contents", Collections.singletonMap("foo", "bar"), dpp.getProperties());
AntBasedTestUtil.TestMutablePropertyProvider mpp2 = new AntBasedTestUtil.TestMutablePropertyProvider(new HashMap<String,String>());
mpp2.defs.put("foo", "bar2");
dpp.setDelegate_(mpp2);
l.msg("got a change from new delegate").assertEvent();
assertEquals("right contents from new delegate", Collections.singletonMap("foo", "bar2"), dpp.getProperties());
mpp2.defs.put("foo", "bar3");
mpp2.mutated();
l.msg("got a change in new delegate").assertEvent();
assertEquals("right contents", Collections.singletonMap("foo", "bar3"), dpp.getProperties());
Reference<?> r = new WeakReference<Object>(mpp);
mpp = null;
assertGC("old delegates can be collected", r);
r = new WeakReference<Object>(dpp);
dpp = null; // but not mpp2
assertGC("delegating PP can be collected when delegate is not", r); // #50572
}
private static final class DPP extends FilterPropertyProvider {
public DPP(PropertyProvider pp) {
super(pp);
}
public void setDelegate_(PropertyProvider pp) {
setDelegate(pp);
}
}
}
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