}
@Test
public void testAppendThrowable() throws Exception {
StringBuilder buf = new StringBuilder();
DummyThrowableProxy tp = new DummyThrowableProxy();
tp.setClassName("test1");
tp.setMessage("msg1");
StackTraceElement ste1 = new StackTraceElement("c1", "m1", "f1", 1);
StackTraceElement ste2 = new StackTraceElement("c2", "m2", "f2", 2);
StackTraceElementProxy[] stepArray = { new StackTraceElementProxy(ste1),
new StackTraceElementProxy(ste2) };
tp.setStackTraceElementProxyArray(stepArray);
DefaultThrowableRenderer renderer = (DefaultThrowableRenderer) layout
.getThrowableRenderer();
renderer.render(buf, tp);
System.out.println(buf.toString());