@Test
public void testRegistrationOnInterface() throws Exception {
Object bean = getContext().getBean("testInterfaceBean");
ModelMBeanInfo inf = getAssembler().getMBeanInfo(bean, "bean:name=interfaceTestBean");
assertNotNull(inf);
assertEquals("My Managed Bean", inf.getDescription());
ModelMBeanOperationInfo op = inf.getOperation("foo");
assertNotNull("foo operation not exposed", op);
assertEquals("invoke foo", op.getDescription());
assertNull("doNotExpose operation should not be exposed", inf.getOperation("doNotExpose"));
ModelMBeanAttributeInfo attr = inf.getAttribute("Bar");
assertNotNull("bar attribute not exposed", attr);
assertEquals("Bar description", attr.getDescription());
ModelMBeanAttributeInfo attr2 = inf.getAttribute("CacheEntries");
assertNotNull("cacheEntries attribute not exposed", attr2);
assertEquals("Metric Type should be COUNTER", "COUNTER",
attr2.getDescriptor().getFieldValue("metricType"));
}