1//////////////////////////////////////////////////////////////////////////////
2// Copyright 2005-2006 Andreas Huber Doenni
3// Distributed under the Boost Software License, Version 1.0. (See accompany-
4// ing file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
5//////////////////////////////////////////////////////////////////////////////
6
7
8
9#include <boost/statechart/state_machine.hpp>
10#include <boost/statechart/event.hpp>
11#include <boost/statechart/simple_state.hpp>
12#include <boost/statechart/custom_reaction.hpp>
13#include <boost/statechart/result.hpp>
14
15#include <boost/static_assert.hpp>
16
17
18
19namespace sc = boost::statechart;
20
21
22
23struct E : sc::event< E > {};
24
25struct A;
26struct InvalidResultAssignTest :
27 sc::state_machine< InvalidResultAssignTest, A > {};
28
29struct A : sc::simple_state< A, InvalidResultAssignTest >
30{
31 typedef sc::custom_reaction< E > reactions;
32
33 sc::result react( const E & )
34 {
35 sc::result r( discard_event() );
36 // sc::result must not be assignmable
37 r = discard_event();
38 return r;
39 }
40};
41
42
43
44int main()
45{
46 InvalidResultAssignTest machine;
47 machine.initiate();
48
49 #ifdef NDEBUG
50 // Test only fails in DEBUG mode. Forcing failure...
51 BOOST_STATIC_ASSERT( false );
52 #endif
53
54 return 0;
55}
56

source code of boost/libs/statechart/test/InvalidResultAssignTest.cpp