Ichthyostega
29b8b2b8bc
...which means, from now on identical input strings will produce the same Symbol object (embedded pointer). TODO: does not handle null pointers passed in as c-String properly
140 lines
4.3 KiB
C++
140 lines
4.3 KiB
C++
/*
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PLACEHOLDER-COMMAND.hpp - fake operation to mock command invocation from UI
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Copyright (C) Lumiera.org
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2016, Hermann Vosseler <Ichthyostega@web.de>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/** @file placeholder-command.hpp
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** Generate fake commands with stub operations and the ability to verify invocation.
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** This helper for unit testing of UI interactions might serve as dummy placeholder,
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** or be used to mock some operation expected to happen within Proc-Layer. The test::Nexus
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** offers a convenience front-end to install such an placeholder operation and use it
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** as counterpart for some tested elements connected to the UI-bus.
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**
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** The actual operation is void of any functionality, but might be installed to accept
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** arbitrary predetermined argument bindings, and to verify invocation and passed arguments.
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**
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** @see BusTerm_test
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** @see test::Nexus::prepareMockCmd
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**
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*/
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#ifndef GUI_TEST_PLACEHOLDER_COMMAND_H
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#define GUI_TEST_PLACEHOLDER_COMMAND_H
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#include "lib/error.hpp"
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#include "lib/symbol.hpp"
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#include "lib/idi/genfunc.hpp"
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#include "lib/test/event-log.hpp"
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#include "proc/control/command-def.hpp"
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#include "lib/format-util.hpp"
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//#include "lib/diff/gen-node.hpp"
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//#include <boost/noncopyable.hpp>
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//#include <functional>
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#include <vector>
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#include <string>
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namespace gui {
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namespace test{
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using std::string;
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using lib::Symbol;
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/**
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* Set of stub command operations.
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* This is a typed definition frame with some operations,
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* suitably to be bound into a Proc-Layer command. The actual
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* command "operation" just logs invocation into a statically
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* obtained \ref EventLog Event-Log instance.
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* @note by design, in Lumiera the actual command functions are stateless.
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* For this reason, the command framework provides no way to associate
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* an _instance_ of some kind of "command object" with the (conceptual)
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* command binding or prototype, thus we're unable to log anything
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* beyond the concrete argument types and values on invocation.
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*/
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template<typename...ARGS>
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class PlaceholderCommand
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{
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static lib::test::EventLog log_;
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/** @internal unique ID-string specific for the instance `ARGS` */
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static string
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uniqueTypeInstance()
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{
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return lib::idi::generateExtendedID<PlaceholderCommand>();
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}
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static string
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fullTypeID()
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{
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return lib::idi::typeFullID<PlaceholderCommand>();
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}
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/** a dummy command "operation */
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static void
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operate (ARGS ...args)
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{
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log_.call(fullTypeID(), "operate", std::forward<ARGS>(args)...);
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}
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static string
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capture (ARGS ...args)
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{
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using VecS = std::vector<string>;
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return "Memento⧏" + util::join (util::stringify<VecS> (args...),"⧓") + "⧐";
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}
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static void
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undo (ARGS ..., string memento)
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{
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log_.call(fullTypeID(), "undo", memento);
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}
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public:
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static proc::control::Command
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fabricateNewInstance (lib::test::EventLog const& invocationLog)
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{
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log_ = invocationLog;
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return proc::control::CommandDef{Symbol{uniqueTypeInstance()}}
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.operation(PlaceholderCommand::operate)
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.captureUndo(PlaceholderCommand::capture)
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.undoOperation(PlaceholderCommand::undo);
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}
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};
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template<typename...ARGS>
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lib::test::EventLog PlaceholderCommand<ARGS...>::log_{"test-dummy-"+fullTypeID()};
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}} // namespace gui::test
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#endif /*GUI_TEST_PLACEHOLDER_COMMAND_H*/
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