test_junction_place.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright The KiCad Developers, see AUTHORS.txt for contributors.
 *
 * 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 3 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, see <https://www.gnu.org/licenses/>.
 */
 
#include <qa_utils/wx_utils/unit_test_utils.h>
 
#include <sch_line.h>
#include <sch_junction.h>
#include <sch_screen.h>
#include <schematic.h>
#include <tool/tool_manager.h>
#include <sch_commit.h>
 
BOOST_AUTO_TEST_SUITE( JunctionPlacement )
 
BOOST_AUTO_TEST_CASE( CrossingSegmentsKeepJunction )
{
    SCH_SCREEN screen;
 
    /*
     * Draw this:
     *            v1 v2
     *            |  |
     *   j1(0,0)-\|  |
     *     -------o--o----------- h1
     *            |  |\-j2(20,0)
     *            |  |
     *
     * j1 is at the intersection of the first two wires, but they're not broken
     * j2 is at the intersection of the second set of wires, after they've been broken
     */
 
    SCH_LINE* h1 = new SCH_LINE( VECTOR2I( -100, 0 ), LAYER_WIRE );
    h1->SetEndPoint( VECTOR2I( 100, 0 ) );
    screen.Append( h1 );
 
    SCH_LINE* v1 = new SCH_LINE( VECTOR2I( 0, -100 ), LAYER_WIRE );
    v1->SetEndPoint( VECTOR2I( 0, 100 ) );
    screen.Append( v1 );
 
    SCH_LINE* v2 = new SCH_LINE( VECTOR2I( 20, -100 ), LAYER_WIRE );
    v2->SetEndPoint( VECTOR2I( 20, 100 ) );
    screen.Append( v2 );
 
    TOOL_MANAGER mgr;
    SCH_COMMIT commit( &mgr );
 
    SCH_JUNCTION* j1 = new SCH_JUNCTION( VECTOR2I( 0, 0 ) );
    screen.Append( j1 );
    commit.Added( j1, &screen );
 
    SCHEMATIC schematic( nullptr);
    schematic.CleanUp( &commit, &screen );
 
    // The wires cross without being split at j1.
    // Make sure it's still present
    BOOST_CHECK( screen.GetItem( VECTOR2I( 0, 0 ), 0, SCH_JUNCTION_T ) != nullptr );
 
    // Cleanup must not mark it as deleted.
    // See: https://gitlab.com/kicad/code/kicad/-/work_items/25844
    BOOST_CHECK( !j1->HasFlag( STRUCT_DELETED ) );
 
    SCH_COMMIT commit2( &mgr );
 
    SCH_LINE* h2 = h1->BreakAt( &commit2, VECTOR2I( 20, 0 ) );
    screen.Append( h2 );
 
    SCH_LINE* v3 = v2->BreakAt( &commit2, VECTOR2I( 20, 0 ) );
    screen.Append( v3 );
 
    SCH_JUNCTION* j2 = new SCH_JUNCTION( VECTOR2I( 20, 0 ) );
    screen.Append( j2 );
    commit2.Added( j2, &screen );
 
    schematic.CleanUp( &commit2, &screen );
 
    BOOST_CHECK( screen.IsExplicitJunction( VECTOR2I( 20, 0 ) ) );
 
    // There should be four wires connected at the explicit junction j2, the two
    // original h1, v2 and the two new segments h2, v3 after break.
    BOOST_CHECK_EQUAL( screen.GetBusesAndWires( VECTOR2I( 20, 0 ), false ).size(), 4 );
}
 
BOOST_AUTO_TEST_SUITE_END()