91 lines
2.8 KiB
C++
91 lines
2.8 KiB
C++
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/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2018 KiCad Developers, see CHANGELOG.TXT for contributors.
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*
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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
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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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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*
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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, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <boost/test/test_case_template.hpp>
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#include <boost/test/unit_test.hpp>
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#include <view/zoom_controller.h>
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// All these tests are of a class in KIGFX
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using namespace KIGFX;
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/**
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* Declares a struct as the Boost test fixture.
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*/
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BOOST_AUTO_TEST_SUITE( ZoomController )
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struct CONST_ZOOM_CASE
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{
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double scale_factor;
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int scroll_amount;
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double exp_zoom_in;
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double exp_zoom_out;
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};
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/*
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* Some "sane" examples for steps, scale factors and results.
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* These should be actual examples that could be encountered
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*
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* TODO: Add more cases for, eg, Mac
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*/
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static const std::vector<CONST_ZOOM_CASE> const_zoom_cases = {
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// A single scroll step on a GTK3 Linux system
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// 120 is the standard wheel delta, so it's what you might expect
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// from a single scroll wheel detent.
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{ CONSTANT_ZOOM_CONTROLLER::GTK3_SCALE, 120, 1.1, 1 / 1.1 },
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};
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/**
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* Check basic setting and getting of values
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*/
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BOOST_AUTO_TEST_CASE( ConstController )
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{
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// How close we need to be (not very, this is a subjective thing anyway)
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const double tol_percent = 10;
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double scale_for_step;
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for( const auto& c : const_zoom_cases )
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{
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CONSTANT_ZOOM_CONTROLLER zoom_ctrl( c.scale_factor );
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scale_for_step = zoom_ctrl.GetScaleForRotation( c.scroll_amount );
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BOOST_CHECK_CLOSE( scale_for_step, c.exp_zoom_in, tol_percent );
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scale_for_step = zoom_ctrl.GetScaleForRotation( -c.scroll_amount );
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BOOST_CHECK_CLOSE( scale_for_step, c.exp_zoom_out, tol_percent );
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}
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}
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/*
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* Testing the accelerated version without making a very slow test is a little
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* tricky and would need a mock timestamping interface, which complicates the
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* real interface a bit and does not really seem worth the effort.
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*/
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BOOST_AUTO_TEST_SUITE_END()
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