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FYI: JComponent.getListeners()
- From: David Gilbert <david dot gilbert at object-refinery dot com>
- To: mauve-patches at sources dot redhat dot com
- Date: Wed, 23 Nov 2005 15:38:53 +0000
- Subject: FYI: JComponent.getListeners()
I added some checks for this method:
2005-11-23 David Gilbert <david.gilbert@object-refinery.com>
* gnu/testlet/javax/swing/JComponent/getListeners.java: New test.
Regards,
Dave
Index: gnu/testlet/javax/swing/JComponent/getListeners.java
===================================================================
RCS file: gnu/testlet/javax/swing/JComponent/getListeners.java
diff -N gnu/testlet/javax/swing/JComponent/getListeners.java
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ gnu/testlet/javax/swing/JComponent/getListeners.java 23 Nov 2005 15:29:47 -0000
@@ -0,0 +1,101 @@
+// Tags: JDK1.3
+
+// Copyright (C) 2005 David Gilbert <david.gilbert@object-refinery.com>
+
+// Mauve is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2, or (at your option)
+// any later version.
+
+// Mauve is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Mauve; see the file COPYING. If not, write to
+// the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+// Boston, MA 02110-1301 USA.
+
+package gnu.testlet.javax.swing.JComponent;
+
+import gnu.testlet.TestHarness;
+import gnu.testlet.Testlet;
+
+import java.awt.event.ContainerListener;
+import java.awt.event.FocusListener;
+import java.util.EventListener;
+
+import javax.swing.JComponent;
+import javax.swing.event.AncestorEvent;
+import javax.swing.event.AncestorListener;
+
+/**
+ * Some tests for the <code>getListeners(Class)</code> method in the
+ * {@link JComponent} class.
+ */
+public class getListeners implements Testlet, AncestorListener {
+
+ class TestComponent extends JComponent
+ {
+ }
+
+ /**
+ * Runs the test using the specified harness.
+ *
+ * @param harness the test harness (<code>null</code> not permitted).
+ */
+ public void test(TestHarness harness)
+ {
+ TestComponent c = new TestComponent();
+ c.addAncestorListener(this);
+ EventListener[] listeners = c.getListeners(AncestorListener.class);
+ harness.check(listeners.length, 1);
+ harness.check(listeners[0], this);
+ // try a listener type that isn't registered
+ listeners = c.getListeners(FocusListener.class);
+ harness.check(listeners.length, 0);
+ c.removeAncestorListener(this);
+ listeners = c.getListeners(AncestorListener.class);
+ harness.check(listeners.length, 0);
+
+ // try a null argument
+ boolean pass = false;
+ try
+ {
+ listeners = c.getListeners(null);
+ }
+ catch (NullPointerException e)
+ {
+ pass = true;
+ }
+ harness.check(pass);
+
+ // try a class that isn't a listener
+ pass = false;
+ try
+ {
+ listeners = c.getListeners(Integer.class);
+ }
+ catch (ClassCastException e)
+ {
+ pass = true;
+ }
+ harness.check(pass);
+ }
+
+ public void ancestorMoved(AncestorEvent e)
+ {
+ // ignored
+ }
+
+ public void ancestorAdded(AncestorEvent e)
+ {
+ // ignored
+ }
+
+ public void ancestorRemoved(AncestorEvent e)
+ {
+ // ignored
+ }
+}