@Test
public void whenNotFoundException() {

final Exception e = new IllegalArgumentException();
when(mapper.findByException(e)).thenReturn(null);
doThrow(new InterceptionException(e)).when(stack).next(method, instance);
try {
	interceptor.intercept(stack, method, instance);
	fail("Should throw InterceptionException");
} catch (InterceptionException e2) {
	assertEquals(e2.getCause(), e);
	}
}