LUMIERA.clone/tests/core/steam/mobject/session/test-scope-invalid.hpp
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/*
TEST-SCOPE-INVALID.hpp - helper for placement scope and scope stack tests
Copyright (C)
2010, Hermann Vosseler <Ichthyostega@web.de>
  **Lumiera** 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. See the file COPYING for further details.
*/
/** @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 "steam/mobject/placement.hpp"
#include "steam/mobject/session/scope.hpp"
namespace steam {
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 steam::mobject::session::test
#endif