@Test
public void testIsBuddy() throws Exception {

	JButton button = new JButton();
	assertFalse(BuddySupport.isBuddy(button, tf));
	tf.add(button);
	assertFalse(BuddySupport.isBuddy(button, tf));
	BuddySupport.addLeft(button, tf);
	assertTrue(BuddySupport.isBuddy(button, tf));
	tf.remove(button);
}