LUMIERA.clone/tests/core/proc/mobject/session/test-scope-invalid.hpp

69 lines
2 KiB
C++

/*
TEST-SCOPE-INVALID.hpp - helper for placement scope and scope stack tests
Copyright (C) Lumiera.org
2010, Hermann Vosseler <Ichthyostega@web.de>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/** @file test-scope-invalid.hpp
** Unit test helper to generate deliberately wrong placement scopes.
** Usable to cover error handling related to QueryFocus and ScopePath
*/
#ifndef MOBJECT_SESSION_TEST_SCOPE_INVALID_H
#define MOBJECT_SESSION_TEST_SCOPE_INVALID_H
#include "proc/mobject/placement.hpp"
#include "proc/mobject/session/scope.hpp"
namespace proc {
namespace mobject {
namespace session {
namespace test {
namespace { // nifty subversive test helper...
Scope const&
fabricate_invalidScope()
{ /**
* assumed to have identical memory layout
* to a Scope object, as the latter is implemented
* by a PlacementRef, which in turn is just an
* encapsulated Placement-ID
*/
struct Ambush
{
/** random ID assumed to be
* nowhere in the model */
PlacementMO::ID derailed_;
};
static Ambush _shady_scope_;
return *reinterpret_cast<Scope*> (&_shady_scope_);
}
}
}}}} // namespace proc::mobject::session::test
#endif