@Test
public void performShouldInvokeDnuWhenNoClassSet() {
PrimObject object = new PrimObject();
try {
object.perform("anything");
} catch (RedlineException e) {
assertEquals(
e.getMessage(),
"Object '"
+ object.toString()
+ "' ("
+ object.cls().toString()
+ ") does not understand 'anything'.");
}
}