test_pns_basics.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 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, see <https://www.gnu.org/licenses/>.
 */
 
#include <qa_utils/wx_utils/unit_test_utils.h>
#include <settings/settings_manager.h>
#include <optional>
 
#include <pcbnew/board.h>
#include <pcbnew/pad.h>
#include <pcbnew/pcb_track.h>
#include <pcbnew/pcbexpr_evaluator.h>
#include <pcbnew/generators/pcb_via_stack.h>
 
#include <lset.h>
#include <padstack.h>
 
#include <geometry/shape_circle.h>
#include <geometry/shape_arc.h>
#include <geometry/eda_angle.h>
#include <router/pns_block_dragger.h>
#include <router/pns_component_dragger.h>
#include <router/pns_dragger.h>
#include <router/pns_routing_settings.h>
#include <router/pns_arc.h>
#include <router/pns_line.h>
#include <router/pns_item.h>
#include <router/pns_kicad_iface.h>
#include <router/pns_node.h>
#include <router/pns_router.h>
#include <router/pns_segment.h>
#include <router/pns_shove.h>
#include <router/pns_sizes_settings.h>
#include <router/pns_solid.h>
#include <router/pns_topology.h>
#include <router/pns_via.h>
 
static bool isCopper( const PNS::ITEM* aItem )
{
    if( !aItem )
        return false;
 
    BOARD_ITEM* parent = aItem->Parent();
 
    if( parent && parent->Type() == PCB_PAD_T )
    {
        PAD* pad = static_cast<PAD*>( parent );
 
        if( pad->IsAperturePad() || pad->IsNPTHWithNoCopper() )
            return false;
    }
 
    return true;
}
 
 
static bool isHole( const PNS::ITEM* aItem )
{
    if( !aItem )
        return false;
 
    return aItem->OfKind( PNS::ITEM::HOLE_T );
}
 
 
static bool isEdge( const PNS::ITEM* aItem )
{
    if( !aItem )
        return false;
 
    const BOARD_ITEM *parent = aItem->BoardItem();
 
    return parent && ( parent->IsOnLayer( Edge_Cuts ) || parent->IsOnLayer( Margin ) );
}
 
 
class MOCK_RULE_RESOLVER : public PNS::RULE_RESOLVER
{
public:
    MOCK_RULE_RESOLVER() : m_clearanceEpsilon( 10 )
    {
    }
 
    virtual ~MOCK_RULE_RESOLVER() {}
 
    virtual int Clearance( const PNS::ITEM* aA, const PNS::ITEM* aB,
                           bool aUseClearanceEpsilon = true ) override
    {
        PNS::CONSTRAINT constraint;
        int             rv = 0;
        PNS_LAYER_RANGE     layers;
 
        if( !aB )
            layers = aA->Layers();
        else if( isEdge( aA ) )
            layers = aB->Layers();
        else if( isEdge( aB ) )
            layers = aA->Layers();
        else
            layers = aA->Layers().Intersection( aB->Layers() );
 
        // Normalize layer range (no -1 magic numbers)
        layers = layers.Intersection( PNS_LAYER_RANGE( PCBNEW_LAYER_ID_START, PCB_LAYER_ID_COUNT - 1 ) );
 
        // electrical clearances are net-aware; physical clearances are net-blind; same-net or
        // free-pad pairs with no positive physical rule fall back to -1.
        const bool sameNet = aA && aB && aA->Net() && aA->Net() == aB->Net();
        const bool freePad = aA && aB && ( aA->IsFreePad() || aB->IsFreePad() );
 
        for( int layer = layers.Start(); layer <= layers.End(); ++layer )
        {
            if( !sameNet && !freePad )
            {
                if( isHole( aA ) && isHole( aB ) )
                {
                    if( QueryConstraint( PNS::CONSTRAINT_TYPE::CT_HOLE_TO_HOLE, aA, aB, layer, &constraint ) )
                    {
                        if( constraint.m_Value.Min() > rv )
                            rv = constraint.m_Value.Min();
                    }
                }
                else if( isHole( aA ) || isHole( aB ) )
                {
                    if( QueryConstraint( PNS::CONSTRAINT_TYPE::CT_HOLE_CLEARANCE, aA, aB, layer, &constraint ) )
                    {
                        if( constraint.m_Value.Min() > rv )
                            rv = constraint.m_Value.Min();
                    }
                }
                else if( isCopper( aA ) && ( !aB || isCopper( aB ) ) )
                {
                    if( QueryConstraint( PNS::CONSTRAINT_TYPE::CT_CLEARANCE, aA, aB, layer, &constraint ) )
                    {
                        if( constraint.m_Value.Min() > rv )
                            rv = constraint.m_Value.Min();
                    }
                }
                else if( isEdge( aA ) || ( aB && isEdge( aB ) ) )
                {
                    if( QueryConstraint( PNS::CONSTRAINT_TYPE::CT_EDGE_CLEARANCE, aA, aB, layer, &constraint ) )
                    {
                        if( constraint.m_Value.Min() > rv )
                            rv = constraint.m_Value.Min();
                    }
                }
            }
 
            if( isHole( aA ) || isHole( aB ) )
            {
                if( QueryConstraint( PNS::CONSTRAINT_TYPE::CT_PHYSICAL_HOLE_CLEARANCE, aA, aB, layer, &constraint ) )
                {
                    if( constraint.m_Value.Min() > rv )
                        rv = constraint.m_Value.Min();
                }
            }
 
            if( QueryConstraint( PNS::CONSTRAINT_TYPE::CT_PHYSICAL_CLEARANCE, aA, aB, layer, &constraint ) )
            {
                if( constraint.m_Value.Min() > rv )
                    rv = constraint.m_Value.Min();
            }
        }
 
        if( ( sameNet || freePad ) && rv == 0 )
            rv = -1;
 
        return rv;
    }
 
    bool HasUserDefinedPhysicalConstraint() override { return m_hasUserPhysicalRules; }
 
    virtual PNS::NET_HANDLE DpCoupledNet( PNS::NET_HANDLE aNet ) override { return nullptr; }
    virtual int DpNetPolarity( PNS::NET_HANDLE aNet ) override { return -1; }
 
    virtual bool DpNetPair( const PNS::ITEM* aItem, PNS::NET_HANDLE& aNetP,
                            PNS::NET_HANDLE& aNetN ) override
    {
        return false;
    }
 
    virtual int NetCode( PNS::NET_HANDLE aNet ) override
    {
        return -1;
    }
 
    virtual wxString NetName( PNS::NET_HANDLE aNet ) override
    {
        return wxEmptyString;
    }
 
    virtual bool QueryConstraint( PNS::CONSTRAINT_TYPE aType, const PNS::ITEM* aItemA,
                                  const PNS::ITEM* aItemB, int aLayer,
                                  PNS::CONSTRAINT* aConstraint ) override
    {
        ITEM_KEY key;
 
        key.a = aItemA;
        key.b = aItemB;
        key.type = aType;
 
        auto it = m_ruleMap.find( key );
 
        if( it == m_ruleMap.end() )
        {
            int cl;
            switch( aType )
            {
            case PNS::CONSTRAINT_TYPE::CT_CLEARANCE:      cl = m_defaultClearance;   break;
            case PNS::CONSTRAINT_TYPE::CT_HOLE_TO_HOLE:   cl = m_defaultHole2Hole;   break;
            case PNS::CONSTRAINT_TYPE::CT_HOLE_CLEARANCE: cl = m_defaultHole2Copper; break;
            case PNS::CONSTRAINT_TYPE::CT_PHYSICAL_CLEARANCE:
                if( m_defaultPhysicalClearance == 0 )
                    return false;
                cl = m_defaultPhysicalClearance;
                break;
            case PNS::CONSTRAINT_TYPE::CT_PHYSICAL_HOLE_CLEARANCE:
                if( m_defaultPhysicalHoleClearance == 0 )
                    return false;
                cl = m_defaultPhysicalHoleClearance;
                break;
            default: return false;
            }
 
            //printf("GetDef %s %s %d cl %d\n", aItemA->KindStr().c_str(), aItemB->KindStr().c_str(), aType, cl );
 
            aConstraint->m_Type = aType;
            aConstraint->m_Value.SetMin( cl );
 
            return true;
        }
        else
        {
            *aConstraint = it->second;
        }
 
        return true;
    }
 
    int ClearanceEpsilon() const override { return m_clearanceEpsilon; }
 
    struct ITEM_KEY
    {
        const PNS::ITEM*     a = nullptr;
        const PNS::ITEM*     b = nullptr;
        PNS::CONSTRAINT_TYPE type;
 
        bool operator==( const ITEM_KEY& other ) const
        {
            return a == other.a && b == other.b && type == other.type;
        }
 
        bool operator<( const ITEM_KEY& other ) const
        {
            if( a < other.a )
            {
                return true;
            }
            else if ( a == other.a )
            {
                if( b < other.b )
                    return true;
                else if ( b == other.b )
                    return type < other.type;
            }
 
            return false;
        }
    };
 
    bool IsInNetTie( const PNS::ITEM* aA ) override { return false; }
 
    bool IsNetTieExclusion( const PNS::ITEM* aItem, const VECTOR2I& aCollisionPos,
                            const PNS::ITEM* aCollidingItem ) override
    {
        return false;
    }
 
    bool IsDrilledHole( const PNS::ITEM* aItem ) override { return false; }
 
    bool IsNonPlatedSlot( const PNS::ITEM* aItem ) override { return false; }
 
    bool IsKeepout( const PNS::ITEM* aObstacle, const PNS::ITEM* aItem, bool* aEnforce ) override
    {
        return false;
    }
 
    void AddMockRule( PNS::CONSTRAINT_TYPE aType, const PNS::ITEM* aItemA, const PNS::ITEM* aItemB,
                      PNS::CONSTRAINT& aConstraint )
    {
        ITEM_KEY key;
 
        key.a = aItemA;
        key.b = aItemB;
        key.type = aType;
 
        m_ruleMap[key] = aConstraint;
    }
 
    int  m_defaultClearance = 200000;
    int  m_defaultHole2Hole = 220000;
    int  m_defaultHole2Copper = 210000;
    int  m_defaultPhysicalClearance = 0;     // 0 means "rule does not match this pair"
    int  m_defaultPhysicalHoleClearance = 0; // 0 means "rule does not match this pair"
    bool m_hasUserPhysicalRules = false;
 
private:
    std::map<ITEM_KEY, PNS::CONSTRAINT> m_ruleMap;
    int                                 m_clearanceEpsilon;
};
 
struct PNS_TEST_FIXTURE;
 
class MOCK_PNS_KICAD_IFACE : public PNS_KICAD_IFACE_BASE
{
public:
    MOCK_PNS_KICAD_IFACE( PNS_TEST_FIXTURE *aFixture ) :
        m_testFixture( aFixture )
    {}
 
    ~MOCK_PNS_KICAD_IFACE() override {}
 
    void HideItem( PNS::ITEM* aItem ) override {};
    void DisplayItem( const PNS::ITEM* aItem, int aClearance, bool aEdit = false,
                      int aFlags = 0 ) override {};
    PNS::RULE_RESOLVER* GetRuleResolver() override;
 
    bool TestInheritTrackWidth( PNS::ITEM* aItem, int* aInheritedWidth,
                                const VECTOR2I& aStartPosition = VECTOR2I() )
    {
        m_startLayer = aItem->Layer();
 
        return inheritTrackWidthAndDpGap( aItem, aStartPosition, aInheritedWidth, nullptr );
    }
 
    std::unique_ptr<PNS::VIA> TestSyncVia( PCB_VIA* aVia ) { return syncVia( aVia ); }
 
private:
    PNS_TEST_FIXTURE* m_testFixture;
};
 
 
struct PNS_TEST_FIXTURE
{
    PNS_TEST_FIXTURE()
    {
        m_router = new PNS::ROUTER;
        m_iface = new MOCK_PNS_KICAD_IFACE( this );
        m_router->SetInterface( m_iface );
    }
 
    ~PNS_TEST_FIXTURE()
    {
        delete m_router;
        delete m_iface;
    }
 
    SETTINGS_MANAGER      m_settingsManager;
    PNS::ROUTER*          m_router;
    MOCK_RULE_RESOLVER    m_ruleResolver;
    MOCK_PNS_KICAD_IFACE* m_iface;
    //std::unique_ptr<BOARD> m_board;
};
 
 
PNS::RULE_RESOLVER* MOCK_PNS_KICAD_IFACE::GetRuleResolver()
{
    return &m_testFixture->m_ruleResolver;
}
 
 
BOOST_FIXTURE_TEST_CASE( PNSShoveOwnsRootLineHistory, PNS_TEST_FIXTURE )
{
    PNS::NODE world;
    world.SetRuleResolver( &m_ruleResolver );
 
    PNS::SEGMENT segment( SEG( VECTOR2I( 0, 0 ), VECTOR2I( 1000000, 0 ) ),
                          reinterpret_cast<PNS::NET_HANDLE>( 1 ) );
    segment.SetLayers( PNS_LAYER_RANGE( F_Cu ) );
 
    PNS::LINE line;
    line.Line().Append( VECTOR2I( 0, 0 ) );
    line.Line().Append( VECTOR2I( 1000000, 0 ) );
    line.SetLayers( PNS_LAYER_RANGE( F_Cu ) );
 
    PNS::SHOVE shove( &world, m_router );
    shove.SetShovePolicy( &segment, PNS::SHOVE::SHP_SHOVE );
    shove.SetShovePolicy( line, PNS::SHOVE::SHP_SHOVE );
}
 
// A microvia stack's hops are copper on a net, so the router has to be able to anchor a route
// on one. Non-routable means "obstacle carrying no connectivity", which would send
// snapToItem() to the nearest grid point and start the track off the via. Locked is what
// keeps the hop from being shoved.
BOOST_FIXTURE_TEST_CASE( PNSViaStackHopIsRoutableButLocked, PNS_TEST_FIXTURE )
{
    BOARD board;
    board.SetCopperLayerCount( 4 );
    board.SetEnabledLayers( LSET::AllCuMask( 4 ) | LSET::AllTechMask() );
 
    PCB_VIA_STACK* stack = new PCB_VIA_STACK( &board, F_Cu );
    stack->SetStartLayer( F_Cu );
    stack->SetEndLayer( In2_Cu );
    stack->SetViaSize( 300000 );
    stack->SetViaDrill( 150000 );
 
    // Deliberately off grid, which is where the grid fallback shows itself.
    stack->SetPosition( VECTOR2I( 1234567, 7654321 ) );
    board.Add( stack );
    stack->Regenerate( &board, nullptr );
 
    PCB_VIA* hop = nullptr;
 
    for( BOARD_ITEM* item : stack->GetBoardItems() )
    {
        if( item->Type() == PCB_VIA_T )
            hop = static_cast<PCB_VIA*>( item );
    }
 
    BOOST_REQUIRE_MESSAGE( hop, "the stack must have built at least one microvia" );
 
    m_iface->SetBoard( &board );
 
    std::unique_ptr<PNS::VIA> synced = m_iface->TestSyncVia( hop );
 
    BOOST_REQUIRE( synced );
    BOOST_CHECK_MESSAGE( synced->IsRoutable(), "a stack hop must be a valid route anchor" );
    BOOST_CHECK_MESSAGE( synced->IsLocked(), "a stack hop must still be locked against shoving" );
}
 
 
// Routability decides whether a route may anchor on an item, not whether it collides with one.
// A stack hop has to obstruct a foreign-net via either way.
BOOST_FIXTURE_TEST_CASE( PNSViaStackHopIsAnObstacle, PNS_TEST_FIXTURE )
{
    BOARD board;
    board.SetCopperLayerCount( 4 );
    board.SetEnabledLayers( LSET::AllCuMask( 4 ) | LSET::AllTechMask() );
 
    VECTOR2I at( 5000000, 5000000 );
 
    PCB_VIA_STACK* stack = new PCB_VIA_STACK( &board, F_Cu );
    stack->SetStartLayer( F_Cu );
    stack->SetEndLayer( In2_Cu );
    stack->SetViaSize( 300000 );
    stack->SetViaDrill( 150000 );
    stack->SetPosition( at );
    board.Add( stack );
    stack->Regenerate( &board, nullptr );
 
    m_iface->SetBoard( &board );
 
    std::unique_ptr<PNS::NODE> world( new PNS::NODE );
    world->SetMaxClearance( 10000000 );
    world->SetRuleResolver( &m_ruleResolver );
 
    int hops = 0;
 
    for( BOARD_ITEM* item : stack->GetBoardItems() )
    {
        if( item->Type() != PCB_VIA_T )
            continue;
 
        std::unique_ptr<PNS::VIA> synced = m_iface->TestSyncVia( static_cast<PCB_VIA*>( item ) );
        BOOST_REQUIRE( synced );
        world->AddRaw( synced.release() );
        hops++;
    }
 
    BOOST_REQUIRE_EQUAL( hops, 2 );
 
    PNS::VIA* intruder = new PNS::VIA( at, PNS_LAYER_RANGE( F_Cu, B_Cu ), 300000, 150000 );
    intruder->SetNet( (PNS::NET_HANDLE) 99 );
    world->AddRaw( intruder );
 
    m_ruleResolver.m_defaultClearance = 200000;
 
    PNS::NODE::OBSTACLES obstacles;
    world->QueryColliding( intruder, obstacles );
 
    BOOST_CHECK_MESSAGE( obstacles.size() > 0, "a stack hop must obstruct a foreign-net via" );
}
 
 
static void dumpObstacles( const PNS::NODE::OBSTACLES &obstacles )
{
    for( const PNS::OBSTACLE& obs : obstacles )
    {
        BOOST_TEST_MESSAGE( wxString::Format( "%p [%s] - %p [%s], clearance %d",
                obs.m_head, obs.m_head->KindStr().c_str(),
                obs.m_item, obs.m_item->KindStr().c_str(),
                obs.m_clearance ) );
    }
}
 
BOOST_FIXTURE_TEST_CASE( PNSHoleCollisions, PNS_TEST_FIXTURE )
{
    PNS::VIA* v1 = new PNS::VIA( VECTOR2I( 0, 1000000 ), PNS_LAYER_RANGE( F_Cu, B_Cu ), 50000, 10000 );
    PNS::VIA* v2 = new PNS::VIA( VECTOR2I( 0, 2000000 ), PNS_LAYER_RANGE( F_Cu, B_Cu ), 50000, 10000 );
 
    std::unique_ptr<PNS::NODE> world ( new PNS::NODE );
 
    v1->SetNet( (PNS::NET_HANDLE) 1 );
    v2->SetNet( (PNS::NET_HANDLE) 2 );
 
    world->SetMaxClearance( 10000000 );
    world->SetRuleResolver( &m_ruleResolver );
 
    world->AddRaw( v1 );
    world->AddRaw( v2 );
 
    BOOST_TEST_MESSAGE( "via to via, no violations" );
    {
        PNS::NODE::OBSTACLES obstacles;
        int count = world->QueryColliding( v1, obstacles );
        dumpObstacles( obstacles );
        BOOST_CHECK_EQUAL( obstacles.size(), 0 );
        BOOST_CHECK_EQUAL( count, 0 );
    }
 
    BOOST_TEST_MESSAGE( "via to via, forced copper to copper violation" );
    {
        PNS::NODE::OBSTACLES obstacles;
        m_ruleResolver.m_defaultClearance = 1000000;
        world->QueryColliding( v1, obstacles );
        dumpObstacles( obstacles );
 
        BOOST_CHECK_EQUAL( obstacles.size(), 1 );
        const auto& first = *obstacles.begin();
 
        BOOST_CHECK_EQUAL( first.m_head, v1 );
        BOOST_CHECK_EQUAL( first.m_item, v2 );
        BOOST_CHECK_EQUAL( first.m_clearance, m_ruleResolver.m_defaultClearance );
    }
 
    BOOST_TEST_MESSAGE( "via to via, forced hole to hole violation" );
    {
        PNS::NODE::OBSTACLES obstacles;
        m_ruleResolver.m_defaultClearance = 200000;
        m_ruleResolver.m_defaultHole2Hole = 1000000;
 
        world->QueryColliding( v1, obstacles );
        dumpObstacles( obstacles );
 
        BOOST_CHECK_EQUAL( obstacles.size(), 1 );
        auto iter = obstacles.begin();
        const auto& first = *iter++;
 
        BOOST_CHECK_EQUAL( first.m_head, v1->Hole() );
        BOOST_CHECK_EQUAL( first.m_item, v2->Hole() );
        BOOST_CHECK_EQUAL( first.m_clearance, m_ruleResolver.m_defaultHole2Hole );
    }
 
    BOOST_TEST_MESSAGE( "via to via, forced copper to hole violation" );
    {
        PNS::NODE::OBSTACLES obstacles;
        m_ruleResolver.m_defaultHole2Hole = 220000;
        m_ruleResolver.m_defaultHole2Copper = 1000000;
 
        world->QueryColliding( v1, obstacles );
        dumpObstacles( obstacles );
 
        BOOST_CHECK_EQUAL( obstacles.size(), 2 );
        auto iter = obstacles.begin();
        const auto& first = *iter++;
 
        // There is no guarantee on what order the two collisions will be in...
        BOOST_CHECK( ( first.m_head == v1 && first.m_item == v2->Hole() )
                  || ( first.m_head == v1->Hole() && first.m_item == v2 ) );
 
        BOOST_CHECK_EQUAL( first.m_clearance, m_ruleResolver.m_defaultHole2Copper );
    }
}
 
 
BOOST_FIXTURE_TEST_CASE( PNSViaBackdrillRetention, PNS_TEST_FIXTURE )
{
    PNS::VIA via( VECTOR2I( 1000, 2000 ), PNS_LAYER_RANGE( F_Cu, B_Cu ), 40000, 20000, nullptr,
                  VIATYPE::THROUGH );
    via.SetHoleLayers( PNS_LAYER_RANGE( F_Cu, In2_Cu ) );
    via.SetHolePostMachining( std::optional<PAD_DRILL_POST_MACHINING_MODE>( PAD_DRILL_POST_MACHINING_MODE::COUNTERSINK ) );
    via.SetSecondaryDrill( std::optional<int>( 12000 ) );
    via.SetSecondaryHoleLayers( std::optional<PNS_LAYER_RANGE>( PNS_LAYER_RANGE( F_Cu, In1_Cu ) ) );
    via.SetSecondaryHolePostMachining( std::optional<PAD_DRILL_POST_MACHINING_MODE>( PAD_DRILL_POST_MACHINING_MODE::NOT_POST_MACHINED ) );
 
    PNS::VIA viaCopy( via );
    std::unique_ptr<PNS::VIA> viaClone( via.Clone() );
 
    auto checkVia = [&]( const PNS::VIA& candidate )
    {
        BOOST_CHECK_EQUAL( candidate.HoleLayers().Start(), via.HoleLayers().Start() );
        BOOST_CHECK_EQUAL( candidate.HoleLayers().End(), via.HoleLayers().End() );
        BOOST_CHECK( candidate.HolePostMachining().has_value() );
        BOOST_CHECK( candidate.HolePostMachining().value() == PAD_DRILL_POST_MACHINING_MODE::COUNTERSINK );
        BOOST_CHECK( candidate.SecondaryDrill().has_value() );
        BOOST_CHECK_EQUAL( candidate.SecondaryDrill().value(), via.SecondaryDrill().value() );
        BOOST_CHECK( candidate.SecondaryHoleLayers().has_value() );
        BOOST_CHECK_EQUAL( candidate.SecondaryHoleLayers()->Start(),
                           via.SecondaryHoleLayers()->Start() );
        BOOST_CHECK_EQUAL( candidate.SecondaryHoleLayers()->End(),
                           via.SecondaryHoleLayers()->End() );
        BOOST_CHECK( candidate.SecondaryHolePostMachining().has_value() );
 
        // run this BOOST_CHECK only if possible to avoid crash
        if( candidate.SecondaryHolePostMachining().has_value() )
            BOOST_CHECK( candidate.SecondaryHolePostMachining().value() == via.SecondaryHolePostMachining().value() );
    };
 
    checkVia( viaCopy );
    checkVia( *viaClone );
}
 
 
BOOST_AUTO_TEST_CASE( PCBViaBackdrillCloneRetainsData )
{
    BOARD board;
    PCB_VIA via( &board );
 
    via.SetPrimaryDrillStartLayer( F_Cu );
    via.SetPrimaryDrillEndLayer( B_Cu );
    via.SetFrontPostMachining( std::optional<PAD_DRILL_POST_MACHINING_MODE>( PAD_DRILL_POST_MACHINING_MODE::COUNTERSINK ) );
    via.SetSecondaryDrillSize( std::optional<int>( 15000 ) );
    via.SetSecondaryDrillStartLayer( F_Cu );
    via.SetSecondaryDrillEndLayer( In2_Cu );
 
    via.SetBackPostMachining( std::optional<PAD_DRILL_POST_MACHINING_MODE>( PAD_DRILL_POST_MACHINING_MODE::COUNTERBORE ) );
    via.SetTertiaryDrillSize( std::optional<int>( 8000 ) );
    via.SetTertiaryDrillStartLayer( B_Cu );
    via.SetTertiaryDrillEndLayer( In4_Cu );
 
    PCB_VIA viaCopy( via );
    std::unique_ptr<PCB_VIA> viaClone( static_cast<PCB_VIA*>( via.Clone() ) );
 
    auto checkVia = [&]( const PCB_VIA& candidate )
    {
        BOOST_CHECK_EQUAL( candidate.GetPrimaryDrillStartLayer(), via.GetPrimaryDrillStartLayer() );
        BOOST_CHECK_EQUAL( candidate.GetPrimaryDrillEndLayer(), via.GetPrimaryDrillEndLayer() );
        BOOST_CHECK( candidate.GetFrontPostMachining().has_value() );
        BOOST_CHECK_EQUAL( static_cast<int>( candidate.GetFrontPostMachining().value() ),
                           static_cast<int>( via.GetFrontPostMachining().value() ) );
        BOOST_CHECK( candidate.GetSecondaryDrillSize().has_value() );
        BOOST_CHECK_EQUAL( candidate.GetSecondaryDrillSize().value(),
                           via.GetSecondaryDrillSize().value() );
        BOOST_CHECK_EQUAL( candidate.GetSecondaryDrillStartLayer(),
                           via.GetSecondaryDrillStartLayer() );
        BOOST_CHECK_EQUAL( candidate.GetSecondaryDrillEndLayer(),
                           via.GetSecondaryDrillEndLayer() );
 
        BOOST_CHECK( candidate.GetBackPostMachining().has_value() );
        BOOST_CHECK_EQUAL( static_cast<int>( candidate.GetBackPostMachining().value() ),
                           static_cast<int>( via.GetBackPostMachining().value() ) );
        BOOST_CHECK( candidate.GetTertiaryDrillSize().has_value() );
        BOOST_CHECK_EQUAL( candidate.GetTertiaryDrillSize().value(),
                           via.GetTertiaryDrillSize().value() );
        BOOST_CHECK_EQUAL( candidate.GetTertiaryDrillStartLayer(),
                           via.GetTertiaryDrillStartLayer() );
        BOOST_CHECK_EQUAL( candidate.GetTertiaryDrillEndLayer(),
                           via.GetTertiaryDrillEndLayer() );
    };
 
    checkVia( viaCopy );
    checkVia( *viaClone );
}
 

BOOST_AUTO_TEST_CASE( PNSLayerRangeSwapBehavior )
{
    // On a 2-layer board with FRONT_INNER_BACK mode, BoardCopperLayerCount() returns 2.
    // The code would calculate PNS_LAYER_RANGE(1, 2 - 2) = PNS_LAYER_RANGE(1, 0)
    // Since start > end, the constructor swaps them to (0, 1), which would span
    // both F_Cu and B_Cu incorrectly.
 
    PNS_LAYER_RANGE innerLayersRange2Layer( 1, 0 );  // What would happen on 2-layer board
 
    // Verify the swap behavior that causes the bug
    BOOST_CHECK_EQUAL( innerLayersRange2Layer.Start(), 0 );
    BOOST_CHECK_EQUAL( innerLayersRange2Layer.End(), 1 );
    BOOST_CHECK( innerLayersRange2Layer.Overlaps( 0 ) );  // F_Cu
    BOOST_CHECK( innerLayersRange2Layer.Overlaps( 1 ) );  // B_Cu
 
    // On a 4-layer board, inner layers are 1 and 2, so PNS_LAYER_RANGE(1, 4-2) = (1, 2)
    PNS_LAYER_RANGE innerLayersRange4Layer( 1, 2 );  // Correct for 4-layer board
 
    BOOST_CHECK_EQUAL( innerLayersRange4Layer.Start(), 1 );
    BOOST_CHECK_EQUAL( innerLayersRange4Layer.End(), 2 );
    BOOST_CHECK( !innerLayersRange4Layer.Overlaps( 0 ) ); // F_Cu - should not overlap
    BOOST_CHECK( innerLayersRange4Layer.Overlaps( 1 ) );  // In1_Cu
    BOOST_CHECK( innerLayersRange4Layer.Overlaps( 2 ) );  // In2_Cu
    BOOST_CHECK( !innerLayersRange4Layer.Overlaps( 3 ) ); // B_Cu - should not overlap
}
 

BOOST_FIXTURE_TEST_CASE( PNSSegmentSplitPreservesLockedState, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world( new PNS::NODE );
    world->SetMaxClearance( 10000000 );
    world->SetRuleResolver( &m_ruleResolver );
 
    PNS::NET_HANDLE net = (PNS::NET_HANDLE) 1;
 
    VECTOR2I segStart( 0, 0 );
    VECTOR2I segEnd( 10000000, 0 );
    VECTOR2I splitPt( 5000000, 0 );
 
    PNS::SEGMENT* lockedSeg = new PNS::SEGMENT( SEG( segStart, segEnd ), net );
    lockedSeg->SetWidth( 250000 );
    lockedSeg->SetLayers( PNS_LAYER_RANGE( F_Cu ) );
    lockedSeg->Mark( PNS::MK_LOCKED );
 
    BOOST_CHECK( lockedSeg->IsLocked() );
 
    world->AddRaw( lockedSeg );
 
    // Clone the locked segment and set up two halves (simulating SplitAdjacentSegments)
    std::unique_ptr<PNS::SEGMENT> clone1( PNS::Clone( *lockedSeg ) );
    std::unique_ptr<PNS::SEGMENT> clone2( PNS::Clone( *lockedSeg ) );
 
    clone1->SetEnds( segStart, splitPt );
    clone2->SetEnds( splitPt, segEnd );
 
    BOOST_CHECK_MESSAGE( clone1->IsLocked(),
                         "First half of split locked segment must retain locked state" );
    BOOST_CHECK_MESSAGE( clone2->IsLocked(),
                         "Second half of split locked segment must retain locked state" );
    BOOST_CHECK_EQUAL( clone1->Width(), lockedSeg->Width() );
    BOOST_CHECK_EQUAL( clone2->Width(), lockedSeg->Width() );
}
 

BOOST_FIXTURE_TEST_CASE( PNSInheritTrackWidthCursorProximity, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world( new PNS::NODE );
    world->SetMaxClearance( 10000000 );
    world->SetRuleResolver( &m_ruleResolver );
 
    VECTOR2I padPos( 0, 0 );
    PNS::NET_HANDLE net = (PNS::NET_HANDLE) 1;
 
    // Pad at origin with a small circular shape
    PNS::SOLID* pad = new PNS::SOLID;
    pad->SetShape( new SHAPE_CIRCLE( padPos, 500000 ) );
    pad->SetPos( padPos );
    pad->SetLayers( PNS_LAYER_RANGE( F_Cu ) );
    pad->SetNet( net );
    world->AddRaw( pad );
 
    // Narrow track going right (250um width)
    int narrowWidth = 250000;
    PNS::SEGMENT* narrowSeg = new PNS::SEGMENT( SEG( padPos, VECTOR2I( 5000000, 0 ) ), net );
    narrowSeg->SetWidth( narrowWidth );
    narrowSeg->SetLayers( PNS_LAYER_RANGE( F_Cu ) );
    world->AddRaw( narrowSeg );
 
    // Wide track going up (500um width)
    int wideWidth = 500000;
    PNS::SEGMENT* wideSeg = new PNS::SEGMENT( SEG( padPos, VECTOR2I( 0, -5000000 ) ), net );
    wideSeg->SetWidth( wideWidth );
    wideSeg->SetLayers( PNS_LAYER_RANGE( F_Cu ) );
    world->AddRaw( wideSeg );
 
    int inherited = 0;
 
    // Without cursor position, should fall back to minimum width
    BOOST_CHECK( m_iface->TestInheritTrackWidth( pad, &inherited ) );
    BOOST_CHECK_EQUAL( inherited, narrowWidth );
 
    // Cursor near the narrow track (to the right) should select narrow width
    inherited = 0;
    BOOST_CHECK( m_iface->TestInheritTrackWidth( pad, &inherited, VECTOR2I( 2000000, 0 ) ) );
    BOOST_CHECK_EQUAL( inherited, narrowWidth );
 
    // Cursor near the wide track (upward) should select wide width
    inherited = 0;
    BOOST_CHECK( m_iface->TestInheritTrackWidth( pad, &inherited, VECTOR2I( 0, -2000000 ) ) );
    BOOST_CHECK_EQUAL( inherited, wideWidth );
 
    // Cursor slightly offset toward narrow track should still select narrow
    inherited = 0;
    BOOST_CHECK( m_iface->TestInheritTrackWidth( pad, &inherited, VECTOR2I( 100000, 50000 ) ) );
    BOOST_CHECK_EQUAL( inherited, narrowWidth );
 
    // Cursor slightly offset toward wide track should select wide
    inherited = 0;
    BOOST_CHECK( m_iface->TestInheritTrackWidth( pad, &inherited, VECTOR2I( 50000, -100000 ) ) );
    BOOST_CHECK_EQUAL( inherited, wideWidth );
}
 

BOOST_AUTO_TEST_CASE( PCBExprGeometryDependentFunctionDetection )
{
    PCBEXPR_COMPILER compiler( new PCBEXPR_UNIT_RESOLVER() );
 
    auto compileAndCheck = [&]( const wxString& aExpr, bool aExpectGeometry )
    {
        PCBEXPR_UCODE   ucode;
        PCBEXPR_CONTEXT ctx( 0, F_Cu );
 
        bool ok = compiler.Compile( aExpr.ToUTF8().data(), &ucode, &ctx );
        BOOST_CHECK_MESSAGE( ok, "Failed to compile: " + aExpr );
 
        if( ok )
        {
            BOOST_CHECK_MESSAGE( ucode.HasGeometryDependentFunctions() == aExpectGeometry,
                                 wxString::Format( "Expression '%s': expected geometry=%s, got %s",
                                                   aExpr,
                                                   aExpectGeometry ? "true" : "false",
                                                   ucode.HasGeometryDependentFunctions()
                                                           ? "true" : "false" ) );
        }
    };
 
    // Property-based conditions should NOT be geometry-dependent
    compileAndCheck( wxT( "A.NetClass == 'Power'" ), false );
    compileAndCheck( wxT( "A.Type == 'via'" ), false );
    compileAndCheck( wxT( "A.NetName == '/VCC'" ), false );
 
    // Geometry-dependent functions SHOULD be detected
    compileAndCheck( wxT( "A.intersectsCourtyard('U1')" ), true );
    compileAndCheck( wxT( "A.intersectsArea('Zone1')" ), true );
    compileAndCheck( wxT( "A.enclosedByArea('Zone1')" ), true );
    compileAndCheck( wxT( "A.intersectsFrontCourtyard('U1')" ), true );
    compileAndCheck( wxT( "A.intersectsBackCourtyard('U1')" ), true );
 
    // Deprecated aliases should also be detected
    compileAndCheck( wxT( "A.insideCourtyard('U1')" ), true );
    compileAndCheck( wxT( "A.insideArea('Zone1')" ), true );
}
 

BOOST_FIXTURE_TEST_CASE( PNSCollideSimpleNullShapeGuard, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world( new PNS::NODE );
    world->SetMaxClearance( 10000000 );
    world->SetRuleResolver( &m_ruleResolver );
 
    PNS::NET_HANDLE net1 = (PNS::NET_HANDLE) 1;
    PNS::NET_HANDLE net2 = (PNS::NET_HANDLE) 2;
 
    PNS::SOLID* solid1 = new PNS::SOLID;
    solid1->SetShape( new SHAPE_CIRCLE( VECTOR2I( 0, 0 ), 500000 ) );
    solid1->SetPos( VECTOR2I( 0, 0 ) );
    solid1->SetLayers( PNS_LAYER_RANGE( F_Cu ) );
    solid1->SetNet( net1 );
 
    PNS::SOLID* solid2 = new PNS::SOLID;
    solid2->SetShape( new SHAPE_CIRCLE( VECTOR2I( 100000, 0 ), 500000 ) );
    solid2->SetPos( VECTOR2I( 100000, 0 ) );
    solid2->SetLayers( PNS_LAYER_RANGE( F_Cu ) );
    solid2->SetNet( net2 );
 
    world->AddRaw( solid1 );
    world->AddRaw( solid2 );
 
    // Verify collision works normally with valid shapes
    PNS::NODE::OBSTACLES obstacles;
    int count = world->QueryColliding( solid1, obstacles );
    BOOST_CHECK( count > 0 );
 
    // Exercise the null-shape guard in collideSimple by calling Collide() directly with a
    // null-shape solid as the head item. This bypasses the spatial index (which requires a
    // valid shape for bounding-box computation) and hits the exact code path the guard protects.
    PNS::SOLID nullShapeSolid;
    nullShapeSolid.SetPos( VECTOR2I( 0, 0 ) );
    nullShapeSolid.SetLayers( PNS_LAYER_RANGE( F_Cu ) );
    nullShapeSolid.SetNet( net2 );
 
    bool collided = solid1->Collide( &nullShapeSolid, world.get(), F_Cu, nullptr );
    BOOST_CHECK( !collided );
}
 
 
// Does any dragged item have a vertex at aPoint? aCopperOnly ignores pads and vias.
static bool tracesTouch( PNS::ITEM_SET& aTraces, const VECTOR2I& aPoint, bool aCopperOnly = false )
{
    const int tolerance = 1000;
 
    for( PNS::ITEM* item : aTraces.Items() )
    {
        if( aCopperOnly && item->OfKind( PNS::ITEM::SOLID_T | PNS::ITEM::VIA_T ) )
            continue;
 
        if( item->Kind() == PNS::ITEM::LINE_T )
        {
            const SHAPE_LINE_CHAIN& chain = static_cast<PNS::LINE*>( item )->CLine();
 
            for( int ii = 0; ii < chain.PointCount(); ii++ )
            {
                if( ( chain.CPoint( ii ) - aPoint ).EuclideanNorm() <= tolerance )
                    return true;
            }
        }
        else
        {
            for( int ii = 0; ii < item->AnchorCount(); ii++ )
            {
                if( ( item->Anchor( ii ) - aPoint ).EuclideanNorm() <= tolerance )
                    return true;
            }
        }
    }
 
    return false;
}
 
 
static PNS::SOLID* makeTestPad( const VECTOR2I& aPos, PNS::NET_HANDLE aNet, int aRadius = 500000 )
{
    PNS::SOLID* pad = new PNS::SOLID;
 
    pad->SetShape( new SHAPE_CIRCLE( aPos, aRadius ) );
    pad->SetPos( aPos );
    pad->SetLayers( PNS_LAYER_RANGE( F_Cu ) );
    pad->SetNet( aNet );
    pad->SetRoutable( true );
 
    return pad;
}
 
 
static PNS::SEGMENT* makeTestTrack( const VECTOR2I& aStart, const VECTOR2I& aEnd, PNS::NET_HANDLE aNet )
{
    PNS::SEGMENT* track = new PNS::SEGMENT( SEG( aStart, aEnd ), aNet );
 
    track->SetWidth( 250000 );
    track->SetLayers( PNS_LAYER_RANGE( F_Cu ) );
 
    return track;
}
 
 
static std::unique_ptr<PNS::NODE> makeTestWorld( PNS::RULE_RESOLVER* aResolver )
{
    std::unique_ptr<PNS::NODE> world( new PNS::NODE );
 
    world->SetMaxClearance( 10000000 );
    world->SetRuleResolver( aResolver );
 
    return world;
}
 
 
// Pad and track selected, far end free: both travel whole.
BOOST_FIXTURE_TEST_CASE( PNSBlockDraggerCarriesSelectedCopper, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world = makeTestWorld( &m_ruleResolver );
    PNS::NET_HANDLE            net = (PNS::NET_HANDLE) 1;
    VECTOR2I                   padPos( 0, 0 );
    VECTOR2I                   freeEnd( 2500000, 0 );
 
    PNS::SOLID*   pad = makeTestPad( padPos, net );
    PNS::SEGMENT* track = makeTestTrack( padPos, freeEnd, net );
    world->AddRaw( pad );
    world->AddRaw( track );
 
    PNS::BLOCK_DRAGGER dragger( m_router );
    dragger.SetWorld( world.get() );
 
    PNS::ITEM_SET itemsToDrag;
    itemsToDrag.Add( pad );
    itemsToDrag.Add( track );
    BOOST_REQUIRE( dragger.Start( padPos, itemsToDrag ) );
 
    const VECTOR2I delta( 1000000, 1000000 );
    dragger.Drag( padPos + delta );
 
    PNS::ITEM_SET traces = dragger.Traces();
    PNS::NODE*    node = dragger.CurrentNode();
 
    BOOST_CHECK( tracesTouch( traces, padPos + delta ) );
    BOOST_CHECK( tracesTouch( traces, freeEnd + delta ) );
    BOOST_CHECK( node->Overrides( pad ) );
    BOOST_CHECK( node->Overrides( track ) );
 
    world->KillChildren();
}
 
 
// A track can end anywhere inside a pad, not just on its anchor, and still has to follow it.
BOOST_FIXTURE_TEST_CASE( PNSBlockDraggerFollowsTrackEndingOffThePadAnchor, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world = makeTestWorld( &m_ruleResolver );
    PNS::NET_HANDLE            net = (PNS::NET_HANDLE) 1;
    VECTOR2I                   padPos( 0, 0 );
    VECTOR2I                   trackStart( 300000, 0 ); // inside the pad, away from its anchor
    VECTOR2I                   trackEnd( 3000000, 0 );
 
    PNS::SOLID*   pad = makeTestPad( padPos, net ); // a circle of radius 500000
    PNS::SEGMENT* track = makeTestTrack( trackStart, trackEnd, net );
    world->AddRaw( pad );
    world->AddRaw( track );
 
    PNS::BLOCK_DRAGGER dragger( m_router );
    dragger.SetWorld( world.get() );
 
    PNS::ITEM_SET itemsToDrag;
    itemsToDrag.Add( pad );
    BOOST_REQUIRE( dragger.Start( padPos, itemsToDrag ) );
 
    const VECTOR2I delta( 0, 2000000 );
    dragger.Drag( padPos + delta );
 
    PNS::ITEM_SET traces = dragger.Traces();
    PNS::NODE*    node = dragger.CurrentNode();
 
    BOOST_CHECK( tracesTouch( traces, trackStart + delta, true ) );
    BOOST_CHECK( tracesTouch( traces, trackEnd, true ) );
    BOOST_CHECK( node->Overrides( track ) );
 
    world->KillChildren();
}
 
 
// An unselected pad holds a selected track even when the track ends away from its anchor.
BOOST_FIXTURE_TEST_CASE( PNSBlockDraggerPinsSelectedTrackInsideUnselectedPad, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world = makeTestWorld( &m_ruleResolver );
    PNS::NET_HANDLE            net = (PNS::NET_HANDLE) 1;
    VECTOR2I                   padPos( 0, 0 );
    VECTOR2I                   trackStart( 300000, 0 ); // inside the pad, away from its anchor
    VECTOR2I                   trackEnd( 3000000, 0 );
 
    PNS::SOLID*   pad = makeTestPad( padPos, net ); // a circle of radius 500000, not selected
    PNS::SEGMENT* track = makeTestTrack( trackStart, trackEnd, net );
    world->AddRaw( pad );
    world->AddRaw( track );
 
    PNS::BLOCK_DRAGGER dragger( m_router );
    dragger.SetWorld( world.get() );
 
    PNS::ITEM_SET itemsToDrag;
    itemsToDrag.Add( track );
    BOOST_REQUIRE( dragger.Start( trackEnd, itemsToDrag ) );
 
    const VECTOR2I delta( 0, 2000000 );
    dragger.Drag( trackEnd + delta );
 
    PNS::ITEM_SET traces = dragger.Traces();
 
    // The pad cannot move, so the end inside it must stay and the track must stretch
    BOOST_CHECK( tracesTouch( traces, trackStart, true ) );
    BOOST_CHECK( !tracesTouch( traces, trackStart + delta, true ) );
    BOOST_CHECK( tracesTouch( traces, trackEnd + delta, true ) );
    BOOST_CHECK( dragger.CurrentNode()->Overrides( track ) );
    BOOST_CHECK( !dragger.CurrentNode()->Overrides( pad ) );
 
    world->KillChildren();
}
 
 
// A junction inside a selected pad, away from its anchor, travels with that pad.
BOOST_FIXTURE_TEST_CASE( PNSBlockDraggerCarriesJunctionInsideSelectedPad, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world = makeTestWorld( &m_ruleResolver );
    PNS::NET_HANDLE            net = (PNS::NET_HANDLE) 1;
 
    VECTOR2I padPos( 0, 0 );
    VECTOR2I junction( 800000, 0 ); // inside the pad, off its anchor, and a three way joint
    VECTOR2I runEnd( 4000000, 0 );
    VECTOR2I selFar( 6000000, 0 );
 
    PNS::SOLID*   pad = makeTestPad( padPos, net, 1500000 );
    PNS::SEGMENT* selected = makeTestTrack( selFar, runEnd, net );
    PNS::SEGMENT* run = makeTestTrack( runEnd, junction, net );
    PNS::SEGMENT* branchUp = makeTestTrack( junction, VECTOR2I( 800000, 2500000 ), net );
    PNS::SEGMENT* branchDown = makeTestTrack( junction, VECTOR2I( 800000, -2500000 ), net );
 
    world->AddRaw( pad );
    world->AddRaw( selected );
    world->AddRaw( run );
    world->AddRaw( branchUp );
    world->AddRaw( branchDown );
 
    PNS::BLOCK_DRAGGER dragger( m_router );
    dragger.SetWorld( world.get() );
 
    PNS::ITEM_SET itemsToDrag;
    itemsToDrag.Add( pad );
    itemsToDrag.Add( selected );
    BOOST_REQUIRE( dragger.Start( padPos, itemsToDrag ) );
 
    const VECTOR2I delta( 0, 3000000 );
    dragger.Drag( padPos + delta );
 
    PNS::ITEM_SET traces = dragger.Traces();
 
    // The pad is moving and the junction sits inside it, so the junction has to move too
    BOOST_CHECK( tracesTouch( traces, junction + delta, true ) );
    BOOST_CHECK( !tracesTouch( traces, junction, true ) );
    BOOST_CHECK( dragger.CurrentNode()->Overrides( run ) );
 
    world->KillChildren();
}
 
 
// A selected arc with both ends free travels rigidly, keeping its shape.
BOOST_FIXTURE_TEST_CASE( PNSBlockDraggerCarriesSelectedArc, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world = makeTestWorld( &m_ruleResolver );
    PNS::NET_HANDLE            net = (PNS::NET_HANDLE) 1;
    VECTOR2I                   arcStart( 0, 0 );
    VECTOR2I                   arcMid( 1000000, 1000000 );
    VECTOR2I                   arcEnd( 2000000, 0 );
 
    PNS::ARC* arc = new PNS::ARC( SHAPE_ARC( arcStart, arcMid, arcEnd, 250000 ), net );
    arc->SetLayers( PNS_LAYER_RANGE( F_Cu ) );
    world->AddRaw( arc );
 
    PNS::BLOCK_DRAGGER dragger( m_router );
    dragger.SetWorld( world.get() );
 
    PNS::ITEM_SET itemsToDrag;
    itemsToDrag.Add( arc );
    BOOST_REQUIRE( dragger.Start( arcStart, itemsToDrag ) );
    BOOST_CHECK_EQUAL( dragger.AnchoredLines().size(), 0u );
 
    const VECTOR2I delta( 0, 2000000 );
    dragger.Drag( arcStart + delta );
 
    PNS::ITEM_SET traces = dragger.Traces();
 
    BOOST_CHECK( tracesTouch( traces, arcStart + delta, true ) );
    BOOST_CHECK( tracesTouch( traces, arcEnd + delta, true ) );
    BOOST_CHECK( dragger.CurrentNode()->Overrides( arc ) );
 
    world->KillChildren();
}
 
 
// A selected arc held at one end is rerouted rather than parked, and keeps being an arc.
BOOST_FIXTURE_TEST_CASE( PNSBlockDraggerReroutesSelectedArcHeldAtOneEnd, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world = makeTestWorld( &m_ruleResolver );
    PNS::NET_HANDLE            net = (PNS::NET_HANDLE) 1;
    VECTOR2I                   arcStart( 0, 0 );
    VECTOR2I                   arcMid( 1000000, 1000000 );
    VECTOR2I                   arcEnd( 2000000, 0 );
 
    world->AddRaw( makeTestPad( arcStart, net, 300000 ) ); // unselected, holds the start
 
    PNS::ARC* arc = new PNS::ARC( SHAPE_ARC( arcStart, arcMid, arcEnd, 250000 ), net );
    arc->SetLayers( PNS_LAYER_RANGE( F_Cu ) );
    world->AddRaw( arc );
 
    PNS::BLOCK_DRAGGER dragger( m_router );
    dragger.SetWorld( world.get() );
 
    PNS::ITEM_SET itemsToDrag;
    itemsToDrag.Add( arc );
    BOOST_REQUIRE( dragger.Start( arcEnd, itemsToDrag ) );
 
    // Only one end is held, so this is a reroute and not an anchored line
    BOOST_CHECK_EQUAL( dragger.AnchoredLines().size(), 0u );
 
    const VECTOR2I delta( 0, 2000000 );
    dragger.Drag( arcEnd + delta );
 
    PNS::ITEM_SET traces = dragger.Traces();
 
    BOOST_CHECK( tracesTouch( traces, arcStart, true ) );
    BOOST_CHECK( !tracesTouch( traces, arcStart + delta, true ) );
    BOOST_CHECK( dragger.CurrentNode()->Overrides( arc ) );
 
    for( PNS::ITEM* item : traces.Items() )
    {
        if( item->Kind() == PNS::ITEM::LINE_T )
            BOOST_CHECK( static_cast<PNS::LINE*>( item )->CLine().ArcCount() > 0 );
    }
 
    world->KillChildren();
}
 
 
// Two selected pads with an unselected track between them: the track travels whole.
BOOST_FIXTURE_TEST_CASE( PNSBlockDraggerCarriesTrackBetweenSelectedPads, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world = makeTestWorld( &m_ruleResolver );
    PNS::NET_HANDLE            net = (PNS::NET_HANDLE) 1;
    VECTOR2I                   padAPos( 0, 0 );
    VECTOR2I                   padBPos( 5000000, 0 );
 
    PNS::SOLID*   padA = makeTestPad( padAPos, net );
    PNS::SOLID*   padB = makeTestPad( padBPos, net );
    PNS::SEGMENT* track = makeTestTrack( padAPos, padBPos, net );
    world->AddRaw( padA );
    world->AddRaw( padB );
    world->AddRaw( track );
 
    PNS::BLOCK_DRAGGER dragger( m_router );
    dragger.SetWorld( world.get() );
 
    PNS::ITEM_SET itemsToDrag;
    itemsToDrag.Add( padA );
    itemsToDrag.Add( padB );
    BOOST_REQUIRE( dragger.Start( padAPos, itemsToDrag ) );
 
    const VECTOR2I delta( 0, 2000000 );
    dragger.Drag( padAPos + delta );
 
    PNS::ITEM_SET traces = dragger.Traces();
    PNS::NODE*    node = dragger.CurrentNode();
 
    // Both ends moved by the same delta, so the track kept its length
    BOOST_CHECK( tracesTouch( traces, padAPos + delta, true ) );
    BOOST_CHECK( tracesTouch( traces, padBPos + delta, true ) );
    BOOST_CHECK( !tracesTouch( traces, padBPos, true ) );
    BOOST_CHECK( node->Overrides( padA ) );
    BOOST_CHECK( node->Overrides( padB ) );
    BOOST_CHECK( node->Overrides( track ) );
 
    world->KillChildren();
}
 
 
// Far end held by an unselected pad: the track stretches, the held end stays.
BOOST_FIXTURE_TEST_CASE( PNSBlockDraggerStretchesTrackHeldAtOneEnd, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world = makeTestWorld( &m_ruleResolver );
    PNS::NET_HANDLE            net = (PNS::NET_HANDLE) 1;
    VECTOR2I                   draggedPadPos( 0, 0 );
    VECTOR2I                   heldPadPos( 5000000, 0 );
 
    PNS::SOLID*   draggedPad = makeTestPad( draggedPadPos, net );
    PNS::SOLID*   heldPad = makeTestPad( heldPadPos, net );
    PNS::SEGMENT* track = makeTestTrack( draggedPadPos, heldPadPos, net );
    world->AddRaw( draggedPad );
    world->AddRaw( heldPad );
    world->AddRaw( track );
 
    PNS::BLOCK_DRAGGER dragger( m_router );
    dragger.SetWorld( world.get() );
 
    PNS::ITEM_SET itemsToDrag;
    itemsToDrag.Add( draggedPad );
    itemsToDrag.Add( track );
    BOOST_REQUIRE( dragger.Start( draggedPadPos, itemsToDrag ) );
 
    const VECTOR2I delta( 0, 2000000 );
    dragger.Drag( draggedPadPos + delta );
 
    PNS::ITEM_SET traces = dragger.Traces();
    PNS::NODE*    node = dragger.CurrentNode();
 
    BOOST_CHECK( tracesTouch( traces, draggedPadPos + delta, true ) );
    BOOST_CHECK( tracesTouch( traces, heldPadPos, true ) );
    BOOST_CHECK( node->Overrides( track ) );
    BOOST_CHECK( !node->Overrides( heldPad ) );
 
    world->KillChildren();
}
 
 
// Only the pad selected: the unselected copper on it is rerouted, its free end stays.
BOOST_FIXTURE_TEST_CASE( PNSBlockDraggerReroutesUnselectedCopper, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world = makeTestWorld( &m_ruleResolver );
    PNS::NET_HANDLE            net = (PNS::NET_HANDLE) 1;
    VECTOR2I                   padPos( 0, 0 );
    VECTOR2I                   corner( 3000000, 0 );
    VECTOR2I                   farEnd( 3000000, 3000000 );
 
    PNS::SOLID*   pad = makeTestPad( padPos, net );
    PNS::SEGMENT* first = makeTestTrack( padPos, corner, net );
    PNS::SEGMENT* second = makeTestTrack( corner, farEnd, net );
    world->AddRaw( pad );
    world->AddRaw( first );
    world->AddRaw( second );
 
    PNS::BLOCK_DRAGGER dragger( m_router );
    dragger.SetWorld( world.get() );
 
    PNS::ITEM_SET itemsToDrag;
    itemsToDrag.Add( pad );
    BOOST_REQUIRE( dragger.Start( padPos, itemsToDrag ) );
 
    const VECTOR2I delta( 0, 1000000 );
    dragger.Drag( padPos + delta );
 
    PNS::ITEM_SET traces = dragger.Traces();
    PNS::NODE*    node = dragger.CurrentNode();
 
    BOOST_CHECK( tracesTouch( traces, padPos + delta, true ) );
    BOOST_CHECK( tracesTouch( traces, farEnd, true ) );
    BOOST_CHECK( node->Overrides( first ) );
    BOOST_CHECK( node->Overrides( second ) );
 
    world->KillChildren();
}
 
 
// A selected segment runs round a plain corner into an unselected one. The unselected one
// is picked up from the corner, not assembled through it into the selected copper.
BOOST_FIXTURE_TEST_CASE( PNSBlockDraggerStopsAtTheSelectedCopper, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world = makeTestWorld( &m_ruleResolver );
    PNS::NET_HANDLE            net = (PNS::NET_HANDLE) 1;
    VECTOR2I                   padPos( 0, 0 );
    VECTOR2I                   corner( 3000000, 0 );
    VECTOR2I                   farEnd( 3000000, 3000000 );
 
    PNS::SOLID*   pad = makeTestPad( padPos, net );
    PNS::SEGMENT* selected = makeTestTrack( padPos, corner, net );
    PNS::SEGMENT* unselected = makeTestTrack( corner, farEnd, net );
    world->AddRaw( pad );
    world->AddRaw( selected );
    world->AddRaw( unselected );
 
    PNS::BLOCK_DRAGGER dragger( m_router );
    dragger.SetWorld( world.get() );
 
    PNS::ITEM_SET itemsToDrag;
    itemsToDrag.Add( pad );
    itemsToDrag.Add( selected );
    BOOST_REQUIRE( dragger.Start( padPos, itemsToDrag ) );
 
    const VECTOR2I delta( 0, 1000000 );
    dragger.Drag( padPos + delta );
 
    PNS::ITEM_SET traces = dragger.Traces();
    PNS::NODE*    node = dragger.CurrentNode();
 
    BOOST_CHECK( tracesTouch( traces, corner + delta ) );
    BOOST_CHECK( tracesTouch( traces, farEnd, true ) );
    BOOST_CHECK( !tracesTouch( traces, farEnd + delta ) );
    BOOST_CHECK( !tracesTouch( traces, padPos, true ) );
 
    // Both originals have to be replaced in the node, or commit leaves copper behind.
    BOOST_CHECK( node->Overrides( selected ) );
    BOOST_CHECK( node->Overrides( unselected ) );
 
    world->KillChildren();
}
 
 
// Unselected copper between two selected segments travels with them. Its line assembles
// through both of their corners, so the clip keeps an interior slice.
BOOST_FIXTURE_TEST_CASE( PNSBlockDraggerCarriesCopperBetweenSelectedSegments, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world = makeTestWorld( &m_ruleResolver );
    PNS::NET_HANDLE            net = (PNS::NET_HANDLE) 1;
    VECTOR2I                   a( 0, 0 );
    VECTOR2I                   b( 3000000, 0 );
    VECTOR2I                   c( 3000000, 3000000 );
    VECTOR2I                   d( 6000000, 3000000 );
 
    PNS::SEGMENT* first = makeTestTrack( a, b, net );
    PNS::SEGMENT* middle = makeTestTrack( b, c, net );
    PNS::SEGMENT* last = makeTestTrack( c, d, net );
    world->AddRaw( first );
    world->AddRaw( middle );
    world->AddRaw( last );
 
    PNS::BLOCK_DRAGGER dragger( m_router );
    dragger.SetWorld( world.get() );
 
    PNS::ITEM_SET itemsToDrag;
    itemsToDrag.Add( first );
    itemsToDrag.Add( last );
    BOOST_REQUIRE( dragger.Start( a, itemsToDrag ) );
 
    const VECTOR2I delta( 0, 1000000 );
    dragger.Drag( a + delta );
 
    PNS::ITEM_SET traces = dragger.Traces();
    PNS::NODE*    node = dragger.CurrentNode();
 
    BOOST_CHECK( tracesTouch( traces, a + delta ) );
    BOOST_CHECK( tracesTouch( traces, b + delta ) );
    BOOST_CHECK( tracesTouch( traces, c + delta ) );
    BOOST_CHECK( tracesTouch( traces, d + delta ) );
    BOOST_CHECK( node->Overrides( first ) );
    BOOST_CHECK( node->Overrides( middle ) );
    BOOST_CHECK( node->Overrides( last ) );
 
    world->KillChildren();
}
 
 
// A via is rigid like a pad, and an unselected via holds a line's end like an unselected pad.
BOOST_FIXTURE_TEST_CASE( PNSBlockDraggerCarriesViaAndPinsOnUnselectedVia, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world = makeTestWorld( &m_ruleResolver );
    PNS::NET_HANDLE            net = (PNS::NET_HANDLE) 1;
    VECTOR2I                   draggedViaPos( 0, 0 );
    VECTOR2I                   heldViaPos( 5000000, 0 );
 
    PNS::VIA*     draggedVia = new PNS::VIA( draggedViaPos, PNS_LAYER_RANGE( F_Cu, B_Cu ), 800000, 400000, net );
    PNS::VIA*     heldVia = new PNS::VIA( heldViaPos, PNS_LAYER_RANGE( F_Cu, B_Cu ), 800000, 400000, net );
    PNS::SEGMENT* track = makeTestTrack( draggedViaPos, heldViaPos, net );
    world->AddRaw( draggedVia );
    world->AddRaw( heldVia );
    world->AddRaw( track );
 
    PNS::BLOCK_DRAGGER dragger( m_router );
    dragger.SetWorld( world.get() );
 
    PNS::ITEM_SET itemsToDrag;
    itemsToDrag.Add( draggedVia );
    itemsToDrag.Add( track );
    BOOST_REQUIRE( dragger.Start( draggedViaPos, itemsToDrag ) );
 
    const VECTOR2I delta( 0, 2000000 );
    dragger.Drag( draggedViaPos + delta );
 
    PNS::ITEM_SET traces = dragger.Traces();
    PNS::NODE*    node = dragger.CurrentNode();
 
    BOOST_CHECK( tracesTouch( traces, draggedViaPos + delta, true ) );
    BOOST_CHECK( tracesTouch( traces, heldViaPos, true ) );
    BOOST_CHECK( !tracesTouch( traces, heldViaPos + delta ) );
    BOOST_CHECK( node->Overrides( draggedVia ) );
    BOOST_CHECK( node->Overrides( track ) );
    BOOST_CHECK( !node->Overrides( heldVia ) );
 
    world->KillChildren();
}
 
 
// Unselected locked copper neither follows nor is touched.
BOOST_FIXTURE_TEST_CASE( PNSBlockDraggerLeavesLockedCopperBehind, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world = makeTestWorld( &m_ruleResolver );
    PNS::NET_HANDLE            net = (PNS::NET_HANDLE) 1;
    VECTOR2I                   padPos( 0, 0 );
    VECTOR2I                   freeEnd( 2500000, 0 );
 
    PNS::SOLID*   pad = makeTestPad( padPos, net );
    PNS::SEGMENT* locked = makeTestTrack( padPos, freeEnd, net );
    locked->Mark( PNS::MK_LOCKED );
    world->AddRaw( pad );
    world->AddRaw( locked );
 
    PNS::BLOCK_DRAGGER dragger( m_router );
    dragger.SetWorld( world.get() );
 
    PNS::ITEM_SET itemsToDrag;
    itemsToDrag.Add( pad );
    BOOST_REQUIRE( dragger.Start( padPos, itemsToDrag ) );
 
    const VECTOR2I delta( 1000000, 1000000 );
    dragger.Drag( padPos + delta );
 
    PNS::ITEM_SET traces = dragger.Traces();
    PNS::NODE*    node = dragger.CurrentNode();
 
    BOOST_CHECK( tracesTouch( traces, padPos + delta ) );
    BOOST_CHECK( !tracesTouch( traces, freeEnd + delta ) );
    BOOST_CHECK( !tracesTouch( traces, freeEnd, true ) );
    BOOST_CHECK( node->Overrides( pad ) );
    BOOST_CHECK( !node->Overrides( locked ) );
 
    world->KillChildren();
}
 
 
// An arc held at both ends is reported and left where it is.
BOOST_FIXTURE_TEST_CASE( PNSBlockDraggerReportsArcsHeldAtBothEnds, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world = makeTestWorld( &m_ruleResolver );
    PNS::NET_HANDLE            net = (PNS::NET_HANDLE) 1;
    VECTOR2I                   arcStart( 0, 0 );
    VECTOR2I                   arcMid( 1000000, 1000000 );
    VECTOR2I                   arcEnd( 2000000, 0 );
 
    PNS::ARC* arc = new PNS::ARC( SHAPE_ARC( arcStart, arcMid, arcEnd, 250000 ), net );
    arc->SetLayers( PNS_LAYER_RANGE( F_Cu ) );
    world->AddRaw( makeTestPad( arcStart, net, 300000 ) );
    world->AddRaw( makeTestPad( arcEnd, net, 300000 ) );
    world->AddRaw( arc );
 
    PNS::BLOCK_DRAGGER dragger( m_router );
    dragger.SetWorld( world.get() );
 
    PNS::ITEM_SET itemsToDrag;
    itemsToDrag.Add( arc );
    BOOST_REQUIRE( dragger.Start( arcStart, itemsToDrag ) );
    BOOST_CHECK_EQUAL( dragger.AnchoredLines().size(), 1u );
 
    dragger.Drag( arcStart + VECTOR2I( 0, 1000000 ) );
 
    BOOST_CHECK( !dragger.CurrentNode()->Overrides( arc ) );
 
    world->KillChildren();
}
 

BOOST_FIXTURE_TEST_CASE( PNSComponentDraggerBasicDrag, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world( new PNS::NODE );
    world->SetMaxClearance( 10000000 );
    world->SetRuleResolver( &m_ruleResolver );
 
    PNS::NET_HANDLE net1 = (PNS::NET_HANDLE) 1;
 
    VECTOR2I pad1Pos( 0, 0 );
 
    PNS::SOLID* pad1 = new PNS::SOLID;
    pad1->SetShape( new SHAPE_CIRCLE( pad1Pos, 500000 ) );
    pad1->SetPos( pad1Pos );
    pad1->SetLayers( PNS_LAYER_RANGE( F_Cu ) );
    pad1->SetNet( net1 );
    pad1->SetRoutable( true );
 
    VECTOR2I traceEnd( 2500000, 2500000 );
    PNS::SEGMENT* trace = new PNS::SEGMENT( SEG( pad1Pos, traceEnd ), net1 );
    trace->SetWidth( 250000 );
    trace->SetLayers( PNS_LAYER_RANGE( F_Cu ) );
 
    world->AddRaw( pad1 );
    world->AddRaw( trace );
 
    PNS::COMPONENT_DRAGGER dragger( m_router );
    dragger.SetWorld( world.get() );
 
    PNS::ITEM_SET itemsToDrag;
    itemsToDrag.Add( pad1 );
 
    bool started = dragger.Start( pad1Pos, itemsToDrag );
    BOOST_REQUIRE( started );
 
    // Simulate multiple drag events (mimics mouse movement during drag)
    VECTOR2I dragPositions[] = {
        VECTOR2I( 100000, 100000 ),
        VECTOR2I( 500000, 500000 ),
        VECTOR2I( 1000000, 1000000 ),
        VECTOR2I( 500000, 200000 ),
        VECTOR2I( 0, 0 )
    };
 
    for( const VECTOR2I& pos : dragPositions )
    {
        bool dragOk = dragger.Drag( pos );
        BOOST_CHECK( dragOk );
 
        PNS::NODE* currentNode = dragger.CurrentNode();
        BOOST_CHECK( currentNode != nullptr );
    }
 
    // Verify the dragged items set is populated
    PNS::ITEM_SET traces = dragger.Traces();
    BOOST_CHECK( traces.Size() > 0 );
 
    // Clean up branch nodes before the world is destroyed
    world->KillChildren();
}
 
 
// Dragging the apex of an isolated arc outward keeps a single arc in the chain and
// changes its radius. Exercises the LINE::DragArc geometric core added for in-router
// arc dragging.
BOOST_AUTO_TEST_CASE( PNSLineDragArcResize )
{
    // 90-degree CCW arc, centre at origin, radius 1mm.
    SHAPE_ARC arc( VECTOR2I( 0, 0 ), VECTOR2I( 1000000, 0 ), EDA_ANGLE( 90, DEGREES_T ), 250000 );
 
    SHAPE_LINE_CHAIN chain;
    chain.SetWidth( 250000 );
    chain.Append( arc );
 
    PNS::LINE line;
    line.SetWidth( 250000 );
    line.Line() = chain;
 
    BOOST_REQUIRE_EQUAL( line.CLine().ArcCount(), 1 );
 
    double oldRadius = line.CLine().CArcs()[0].GetRadius();
    int    apexIdx = line.CLine().PointCount() / 2;
 
    // Pull the apex toward the tangent corner at (1mm, 1mm) to grow the radius.
    line.DragArc( VECTOR2I( 950000, 950000 ), apexIdx );
 
    BOOST_CHECK_EQUAL( line.CLine().ArcCount(), 1 );
    BOOST_CHECK( line.CLine().PointCount() >= 2 );
    BOOST_CHECK( line.CLine().CArcs()[0].GetRadius() != oldRadius );
}
 
 
// Driving the arc endpoints together collapses the arc out of the chain (the
// "collapse to nothing drops it from the route" path in LINE::DragArc).
BOOST_AUTO_TEST_CASE( PNSLineDragArcCollapse )
{
    SHAPE_ARC arc( VECTOR2I( 0, 0 ), VECTOR2I( 1000000, 0 ), EDA_ANGLE( 90, DEGREES_T ), 250000 );
 
    SHAPE_LINE_CHAIN chain;
    chain.SetWidth( 250000 );
    chain.Append( arc );
 
    PNS::LINE line;
    line.SetWidth( 250000 );
    line.Line() = chain;
 
    BOOST_REQUIRE_EQUAL( line.CLine().ArcCount(), 1 );
 
    // Drag almost onto the tangent corner at (1mm, 1mm), shrinking the arc until its
    // endpoints fall within the keep-track threshold and the arc is dropped. Staying a
    // hair off the corner keeps the constructed radius positive.
    line.DragArc( VECTOR2I( 999950, 999950 ), line.CLine().PointCount() / 2 );
 
    BOOST_CHECK_EQUAL( line.CLine().ArcCount(), 0 );
}
 
 
// An arc whose central angle reaches 180 degrees cannot be dragged, and the refusal
// is reported through the router's failure reason so the UI can surface it.
BOOST_FIXTURE_TEST_CASE( PNSDragArcRejectsNear180, PNS_TEST_FIXTURE )
{
    PNS::ROUTING_SETTINGS settings( nullptr, "" );
    m_router->LoadSettings( &settings );
 
    PNS::NET_HANDLE net = (PNS::NET_HANDLE) 1;
 
    auto makeArc = [&]( const EDA_ANGLE& aAngle ) -> PNS::ARC*
    {
        SHAPE_ARC sa( VECTOR2I( 0, 0 ), VECTOR2I( 1000000, 0 ), aAngle, 250000 );
        PNS::ARC* a = new PNS::ARC( sa, net );
        a->SetLayers( PNS_LAYER_RANGE( F_Cu ) );
        return a;
    };
 
    // Shallow arc: drag starts and no failure is reported.
    {
        std::unique_ptr<PNS::NODE> world( new PNS::NODE );
        world->SetMaxClearance( 10000000 );
        world->SetRuleResolver( &m_ruleResolver );
 
        PNS::ARC* arc = makeArc( EDA_ANGLE( 90, DEGREES_T ) );
        world->AddRaw( arc );
 
        PNS::DRAGGER dragger( m_router );
        dragger.SetWorld( world.get() );
        dragger.SetMode( PNS::DM_ARC );
 
        PNS::ITEM_SET items;
        items.Add( arc );
 
        m_router->SetFailureReason( wxEmptyString );
        BOOST_CHECK( dragger.Start( arc->Anchor( 0 ), items ) );
        BOOST_CHECK( m_router->FailureReason().IsEmpty() );
 
        world->KillChildren();
    }
 
    // Major arc (>= 180 deg): drag is refused with an explanatory failure reason.
    {
        std::unique_ptr<PNS::NODE> world( new PNS::NODE );
        world->SetMaxClearance( 10000000 );
        world->SetRuleResolver( &m_ruleResolver );
 
        PNS::ARC* arc = makeArc( EDA_ANGLE( 270, DEGREES_T ) );
        world->AddRaw( arc );
 
        PNS::DRAGGER dragger( m_router );
        dragger.SetWorld( world.get() );
        dragger.SetMode( PNS::DM_ARC );
 
        PNS::ITEM_SET items;
        items.Add( arc );
 
        m_router->SetFailureReason( wxEmptyString );
        BOOST_CHECK( !dragger.Start( arc->Anchor( 0 ), items ) );
        BOOST_CHECK( !m_router->FailureReason().IsEmpty() );
 
        world->KillChildren();
    }
 
    // Clockwise major arc (negative central angle): the magnitude is what matters, so
    // it must be refused just like its CCW counterpart.
    {
        std::unique_ptr<PNS::NODE> world( new PNS::NODE );
        world->SetMaxClearance( 10000000 );
        world->SetRuleResolver( &m_ruleResolver );
 
        PNS::ARC* arc = makeArc( EDA_ANGLE( -270, DEGREES_T ) );
        world->AddRaw( arc );
 
        PNS::DRAGGER dragger( m_router );
        dragger.SetWorld( world.get() );
        dragger.SetMode( PNS::DM_ARC );
 
        PNS::ITEM_SET items;
        items.Add( arc );
 
        m_router->SetFailureReason( wxEmptyString );
        BOOST_CHECK( !dragger.Start( arc->Anchor( 0 ), items ) );
        BOOST_CHECK( !m_router->FailureReason().IsEmpty() );
 
        world->KillChildren();
    }
}
 
 
// Base mock's NetCode() returns -1 for everything, which reads as unnetted; use a real net here
namespace
{
struct NETCODE_RULE_RESOLVER : public MOCK_RULE_RESOLVER
{
    int NetCode( PNS::NET_HANDLE aNet ) override { return aNet ? 1 : -1; }
};
 
PNS::ITEM* queryFinishAnchor( PNS::NODE& aWorld, const PNS::LINE& aTrack )
{
    PNS::TOPOLOGY   topo( &aWorld );
    VECTOR2I        anchorPoint;
    PNS_LAYER_RANGE anchorLayers;
    PNS::ITEM*      anchorItem = nullptr;
 
    BOOST_REQUIRE( topo.NearestUnconnectedAnchorPoint( &aTrack, anchorPoint, anchorLayers,
                                                       anchorItem ) );
    return anchorItem;
}
} // namespace
 
 
// F-key finish adds the track to a temporary branch node; a joint linking only to that
// track must still yield a persistent-world anchor, not a dangling branch pointer
//
// Regression test for https://gitlab.com/kicad/code/kicad/-/issues/24985
BOOST_FIXTURE_TEST_CASE( PNSFinishAnchorNoDanglingBranchItem, PNS_TEST_FIXTURE )
{
    NETCODE_RULE_RESOLVER resolver;
 
    PNS::NODE world;
    world.SetMaxClearance( 10000000 );
    world.SetRuleResolver( &resolver );
 
    PNS::NET_HANDLE net = (PNS::NET_HANDLE) 1;
 
    // Persistent unconnected target on the same net, away from the track
    PNS::SEGMENT* target = new PNS::SEGMENT( SEG( VECTOR2I( 10000000, 10000000 ),
                                                 VECTOR2I( 12000000, 10000000 ) ), net );
    target->SetWidth( 250000 );
    target->SetLayers( PNS_LAYER_RANGE( F_Cu ) );
    world.AddRaw( target );
 
    // Closed loop; end joint's two links are both owned by the temporary branch node
    PNS::LINE track;
    track.SetLayers( PNS_LAYER_RANGE( F_Cu ) );
    track.SetNet( net );
    track.SetWidth( 250000 );
    track.Line().Append( VECTOR2I( 0, 0 ) );
    track.Line().Append( VECTOR2I( 2000000, 0 ) );
    track.Line().Append( VECTOR2I( 2000000, 2000000 ) );
    track.Line().Append( VECTOR2I( 0, 2000000 ) );
    track.Line().Append( VECTOR2I( 0, 0 ) );
 
    // Anchor must be the persistent target, never a link owned by the destroyed temp branch
    BOOST_CHECK_EQUAL( queryFinishAnchor( world, track ), target );
}
 
 
// ConnectedJoints must cross arcs when subtracting the track; stopping at an arc left
// temporary primitives beyond it selectable as the anchor, reviving the dangling pointer
//
// Regression test for https://gitlab.com/kicad/code/kicad/-/issues/24985
BOOST_FIXTURE_TEST_CASE( PNSFinishAnchorCrossesArcInConnectivity, PNS_TEST_FIXTURE )
{
    NETCODE_RULE_RESOLVER resolver;
 
    PNS::NODE world;
    world.SetMaxClearance( 10000000 );
    world.SetRuleResolver( &resolver );
 
    PNS::NET_HANDLE net = (PNS::NET_HANDLE) 1;
 
    // Farther from the track end than its own far segment, wins only once that's subtracted
    PNS::SEGMENT* target = new PNS::SEGMENT( SEG( VECTOR2I( 7000000, 0 ),
                                                 VECTOR2I( 8000000, 0 ) ), net );
    target->SetWidth( 250000 );
    target->SetLayers( PNS_LAYER_RANGE( F_Cu ) );
    world.AddRaw( target );
 
    // Segment-arc-segment track; far segment lies across the arc, so connectivity must cross it
    PNS::LINE track;
    track.SetLayers( PNS_LAYER_RANGE( F_Cu ) );
    track.SetNet( net );
    track.SetWidth( 250000 );
    track.Line().Append( VECTOR2I( 0, 0 ) );
    track.Line().Append( VECTOR2I( 1000000, 0 ) );
    track.Line().Append( SHAPE_ARC( VECTOR2I( 1000000, 0 ), VECTOR2I( 1500000, 500000 ),
                                    VECTOR2I( 2000000, 0 ), 0 ) );
    track.Line().Append( VECTOR2I( 3000000, 0 ) );
 
    // Anchor must be the persistent target, not a branch-owned primitive across the arc
    BOOST_CHECK_EQUAL( queryFinishAnchor( world, track ), target );
}
 
 
// Regression tests for issues #18658 and #24132. Physical clearance rules must be
// enforced for same-net and free-pad pairs without disturbing the fast path on
// boards that do not define them.
 
namespace
{
PNS::VIA* makeVia( const VECTOR2I& aPos, PNS::NET_HANDLE aNet )
{
    PNS::VIA* v = new PNS::VIA( aPos, PNS_LAYER_RANGE( F_Cu, B_Cu ), 50000, 10000 );
    v->SetNet( aNet );
    return v;
}
 
PNS::SOLID* makePad( const VECTOR2I& aPos, PNS::NET_HANDLE aNet, bool aFreePad = false )
{
    PNS::SOLID* s = new PNS::SOLID;
    s->SetShape( new SHAPE_CIRCLE( aPos, 250000 ) );
    s->SetPos( aPos );
    s->SetLayers( PNS_LAYER_RANGE( F_Cu ) );
    s->SetNet( aNet );
    s->SetIsFreePad( aFreePad );
    return s;
}
} // namespace
 
 
// Cross-net via vs via with no physical rules: ordinary CT_CLEARANCE applies.
BOOST_FIXTURE_TEST_CASE( PNSCrossNetViaViaElectricalClearanceBaseline, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world( new PNS::NODE );
    world->SetMaxClearance( 10000000 );
    world->SetRuleResolver( &m_ruleResolver );
 
    PNS::VIA* v1 = makeVia( VECTOR2I( 0, 0 ), (PNS::NET_HANDLE) 1 );
    PNS::VIA* v2 = makeVia( VECTOR2I( 0, 100000 ), (PNS::NET_HANDLE) 2 );
    world->AddRaw( v1 );
    world->AddRaw( v2 );
 
    m_ruleResolver.m_defaultClearance = 1000000;
 
    PNS::NODE::OBSTACLES obstacles;
    world->QueryColliding( v1, obstacles );
 
    BOOST_CHECK_GE( obstacles.size(), (size_t) 1 );
}
 
 
// Same-net via vs via with no physical rules: fast path keeps clearance = -1.
BOOST_FIXTURE_TEST_CASE( PNSSameNetNoPhysicalRulesFastPathNoCollision, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world( new PNS::NODE );
    world->SetMaxClearance( 10000000 );
    world->SetRuleResolver( &m_ruleResolver );
 
    PNS::NET_HANDLE net = (PNS::NET_HANDLE) 1;
    world->AddRaw( makeVia( VECTOR2I( 0, 0 ), net ) );
    PNS::VIA* v1 = makeVia( VECTOR2I( 0, 100000 ), net );
    world->AddRaw( v1 );
 
    m_ruleResolver.m_hasUserPhysicalRules = false;
    m_ruleResolver.m_defaultClearance = 1000000;
 
    PNS::NODE::OBSTACLES obstacles;
    world->QueryColliding( v1, obstacles );
 
    BOOST_CHECK_EQUAL( obstacles.size(), (size_t) 0 );
}
 
 
// Same-net via vs via with a matching physical_clearance rule: collision reported.
// Regression scenario for issues #18658 and #24132.
BOOST_FIXTURE_TEST_CASE( PNSSameNetWithPhysicalRuleCollides, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world( new PNS::NODE );
    world->SetMaxClearance( 10000000 );
    world->SetRuleResolver( &m_ruleResolver );
 
    PNS::NET_HANDLE net = (PNS::NET_HANDLE) 1;
    world->AddRaw( makeVia( VECTOR2I( 0, 0 ), net ) );
    PNS::VIA* v1 = makeVia( VECTOR2I( 0, 100000 ), net );
    world->AddRaw( v1 );
 
    m_ruleResolver.m_hasUserPhysicalRules = true;
    m_ruleResolver.m_defaultPhysicalClearance = 1000000;
 
    PNS::NODE::OBSTACLES obstacles;
    world->QueryColliding( v1, obstacles );
 
    BOOST_CHECK_GE( obstacles.size(), (size_t) 1 );
    if( !obstacles.empty() )
        BOOST_CHECK_EQUAL( obstacles.begin()->m_clearance, 1000000 );
}
 
 
// Free pad vs cross-net pair, no physical rules: fast path applies.
BOOST_FIXTURE_TEST_CASE( PNSFreePadNoPhysicalRulesFastPath, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world( new PNS::NODE );
    world->SetMaxClearance( 10000000 );
    world->SetRuleResolver( &m_ruleResolver );
 
    PNS::SOLID* freePad = makePad( VECTOR2I( 0, 0 ), (PNS::NET_HANDLE) 1, /*aFreePad=*/true );
    PNS::VIA*   v = makeVia( VECTOR2I( 0, 100000 ), (PNS::NET_HANDLE) 2 );
    world->AddRaw( freePad );
    world->AddRaw( v );
 
    m_ruleResolver.m_hasUserPhysicalRules = false;
    m_ruleResolver.m_defaultClearance = 1000000;
 
    PNS::NODE::OBSTACLES obstacles;
    world->QueryColliding( v, obstacles );
 
    BOOST_CHECK_EQUAL( obstacles.size(), (size_t) 0 );
}
 
 
// Free pad vs cross-net pair, physical rules present but no match: safety net must
// keep free pads from reporting collisions just because the board has a physical
// rule somewhere.
BOOST_FIXTURE_TEST_CASE( PNSFreePadSafetyNet, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world( new PNS::NODE );
    world->SetMaxClearance( 10000000 );
    world->SetRuleResolver( &m_ruleResolver );
 
    PNS::SOLID* freePad = makePad( VECTOR2I( 0, 0 ), (PNS::NET_HANDLE) 1, /*aFreePad=*/true );
    PNS::VIA*   v = makeVia( VECTOR2I( 0, 100000 ), (PNS::NET_HANDLE) 2 );
    world->AddRaw( freePad );
    world->AddRaw( v );
 
    m_ruleResolver.m_hasUserPhysicalRules = true;
    m_ruleResolver.m_defaultPhysicalClearance = 0; // rule does not match
    m_ruleResolver.m_defaultClearance = 1000000;   // would collide if !sameNet block runs
 
    PNS::NODE::OBSTACLES obstacles;
    world->QueryColliding( v, obstacles );
 
    BOOST_CHECK_EQUAL( obstacles.size(), (size_t) 0 );
}
 
 
// Free pad with a matching physical_clearance rule: collision reported.
BOOST_FIXTURE_TEST_CASE( PNSFreePadPhysicalRuleEnforced, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world( new PNS::NODE );
    world->SetMaxClearance( 10000000 );
    world->SetRuleResolver( &m_ruleResolver );
 
    PNS::SOLID* freePad = makePad( VECTOR2I( 0, 0 ), (PNS::NET_HANDLE) 1, /*aFreePad=*/true );
    PNS::VIA*   v = makeVia( VECTOR2I( 0, 100000 ), (PNS::NET_HANDLE) 2 );
    world->AddRaw( freePad );
    world->AddRaw( v );
 
    m_ruleResolver.m_hasUserPhysicalRules = true;
    m_ruleResolver.m_defaultPhysicalClearance = 1000000;
 
    PNS::NODE::OBSTACLES obstacles;
    world->QueryColliding( v, obstacles );
 
    BOOST_CHECK_GE( obstacles.size(), (size_t) 1 );
}
 
 
// Same-net via vs pad with a matching physical_hole_clearance rule. Covers the
// drill-into-pad half of issue #24132 and exercises CT_PHYSICAL_HOLE_CLEARANCE.
BOOST_FIXTURE_TEST_CASE( PNSSameNetPhysicalHoleClearance, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world( new PNS::NODE );
    world->SetMaxClearance( 10000000 );
    world->SetRuleResolver( &m_ruleResolver );
 
    PNS::NET_HANDLE net = (PNS::NET_HANDLE) 1;
    PNS::SOLID*     pad = makePad( VECTOR2I( 0, 0 ), net );
    PNS::VIA*       via = makeVia( VECTOR2I( 0, 100000 ), net );
    world->AddRaw( pad );
    world->AddRaw( via );
 
    m_ruleResolver.m_hasUserPhysicalRules = true;
    m_ruleResolver.m_defaultPhysicalHoleClearance = 1000000;
 
    PNS::NODE::OBSTACLES obstacles;
    world->QueryColliding( via, obstacles );
 
    BOOST_CHECK_GE( obstacles.size(), (size_t) 1 );
}
 
 
BOOST_FIXTURE_TEST_CASE( PNSSameNetSafetyNetOnOverlap, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world( new PNS::NODE );
    world->SetMaxClearance( 10000000 );
    world->SetRuleResolver( &m_ruleResolver );
 
    PNS::NET_HANDLE net = (PNS::NET_HANDLE) 1;
    world->AddRaw( makeVia( VECTOR2I( 0, 0 ), net ) );
    PNS::VIA* v1 = makeVia( VECTOR2I( 0, 30000 ), net ); // overlaps the first via
    world->AddRaw( v1 );
 
    m_ruleResolver.m_hasUserPhysicalRules = true;
    m_ruleResolver.m_defaultPhysicalClearance = 0;
 
    PNS::NODE::OBSTACLES obstacles;
    world->QueryColliding( v1, obstacles );
 
    BOOST_CHECK_EQUAL( obstacles.size(), (size_t) 0 );
}
 
 
// Same-net pad+via with both physical_clearance and physical_hole_clearance
// matching: the resolver returns max across the two query points.
BOOST_FIXTURE_TEST_CASE( PNSBothPhysicalConstraintsMaxWins, PNS_TEST_FIXTURE )
{
    std::unique_ptr<PNS::NODE> world( new PNS::NODE );
    world->SetMaxClearance( 10000000 );
    world->SetRuleResolver( &m_ruleResolver );
 
    PNS::NET_HANDLE net = (PNS::NET_HANDLE) 1;
    PNS::SOLID*     pad = makePad( VECTOR2I( 0, 0 ), net );
    PNS::VIA*       via = makeVia( VECTOR2I( 0, 100000 ), net );
    world->AddRaw( pad );
    world->AddRaw( via );
 
    m_ruleResolver.m_hasUserPhysicalRules = true;
    m_ruleResolver.m_defaultPhysicalClearance = 100000;
    m_ruleResolver.m_defaultPhysicalHoleClearance = 2000000;
 
    PNS::NODE::OBSTACLES obstacles;
    world->QueryColliding( via, obstacles );
 
    BOOST_CHECK_GE( obstacles.size(), (size_t) 1 );
 
    // The recursive collideSimple call for the via's hole inserts a separate OBSTACLE
    // with the max-accumulated clearance, so look across all entries rather than
    // relying on std::set ordering (which is by pointer).
    int maxClearance = 0;
    for( const PNS::OBSTACLE& obs : obstacles )
        maxClearance = std::max( maxClearance, obs.m_clearance );
    BOOST_CHECK_EQUAL( maxClearance, 2000000 );
}
 
 
// Diff pair vias must respect copper-to-hole clearance, not just copper-to-copper and
// hole-to-hole. EffectiveDiffPairViaGap() is the copper-edge-to-copper-edge distance the
// placer fits vias to; it converts each clearance rule to that reference by subtracting the
// annular ring(s) of via copper that sit between a hole edge and the copper edge.
//
// Regression test for https://gitlab.com/kicad/code/kicad/-/issues/21623 where the placer
// ignored copper-to-hole clearance and produced DRC violations on diff pair vias.
BOOST_AUTO_TEST_CASE( PNSDiffPairViaGapCopperToHoleClearance )
{
    PNS::SIZES_SETTINGS sizes;
 
    // 600um copper diameter over a 300um drill leaves a 150um annular ring.
    sizes.SetViaDiameter( 600000 );
    sizes.SetViaDrill( 300000 );
    sizes.SetDiffPairViaGapSameAsTraceGap( false );
 
    BOOST_CHECK_EQUAL( sizes.GetDiffPairCopperToHole(), 0 );
 
    // Copper-to-hole binds because 400um from a hole edge to the neighbour's copper edge is
    // 400000 - 150000 = 250000 copper-to-copper, exceeding both other rules.
    sizes.SetDiffPairViaGap( 200000 );
    sizes.SetDiffPairHoleToHole( 500000 ); // 500000 - 300000 = 200000 copper-to-copper
    sizes.SetDiffPairCopperToHole( 400000 );
 
    BOOST_CHECK_EQUAL( sizes.GetDiffPairCopperToHole(), 400000 );
    BOOST_CHECK_EQUAL( sizes.EffectiveDiffPairViaGap(), 250000 );
 
    // Hole-to-hole binds when it is the largest converted rule.
    sizes.SetDiffPairHoleToHole( 900000 ); // 900000 - 300000 = 600000 copper-to-copper
    BOOST_CHECK_EQUAL( sizes.EffectiveDiffPairViaGap(), 600000 );
 
    // Plain copper-to-copper gap binds when the hole-based rules are slack.
    sizes.SetDiffPairHoleToHole( 0 );
    sizes.SetDiffPairCopperToHole( 0 );
    BOOST_CHECK_EQUAL( sizes.EffectiveDiffPairViaGap(), 200000 );
}
 
 
// Collapsing a padstack via's layer range for the violation highlight orphaned its
// layer-indexed shapes. Layer 2 is required here: 0, 1 and 5 resolve by accident.
//
// Regression test for https://gitlab.com/kicad/code/kicad/-/issues/25139
namespace
{
class PADSTACK_VIA_IFACE : public MOCK_PNS_KICAD_IFACE
{
public:
    PADSTACK_VIA_IFACE( PNS_TEST_FIXTURE* aFixture ) :
            MOCK_PNS_KICAD_IFACE( aFixture )
    {
    }
 
    void SyncWorld( PNS::NODE* aWorld ) override
    {
        aWorld->SetMaxClearance( 10000000 );
        aWorld->SetRuleResolver( GetRuleResolver() );
 
        auto via = std::make_unique<PNS::VIA>( VECTOR2I( 0, 0 ), PNS_LAYER_RANGE( 0, 5 ), 400000, 100000,
                                               (PNS::NET_HANDLE) 1, VIATYPE::THROUGH );
        via->SetStackMode( PNS::VIA::STACK_MODE::FRONT_INNER_BACK );
        via->SetDiameter( 0, 400000 );
        via->SetDiameter( 1, 450000 );
        via->SetDiameter( 5, 400000 );
 
        aWorld->Add( std::move( via ) );
    }
 
    void DisplayItem( const PNS::ITEM* aItem, int aClearance, bool aEdit = false, int aFlags = 0 ) override
    {
        if( !aItem->OfKind( PNS::ITEM::VIA_T ) )
            return;
 
        m_viasDisplayed++;
 
        if( !aItem->Shape( -1 ) )
            m_nullShapes++;
    }
 
    int m_viasDisplayed = 0;
    int m_nullShapes = 0;
};
} // namespace
 
 
BOOST_FIXTURE_TEST_CASE( PNSMarkViolationsKeepsPadstackViaShape, PNS_TEST_FIXTURE )
{
    PADSTACK_VIA_IFACE    iface( this );
    PNS::ROUTING_SETTINGS settings( nullptr, "" );
    PNS::SIZES_SETTINGS   sizes;
 
    m_router->SetInterface( &iface );
    m_router->LoadSettings( &settings );
    m_router->SetMode( PNS::PNS_MODE_ROUTE_SINGLE );
 
    sizes.SetTrackWidth( 200000 );
    sizes.SetBoardMinTrackWidth( 100000 );
    m_router->UpdateSizes( sizes );
 
    m_router->SyncWorld();
 
    BOOST_REQUIRE( !m_router->StartRouting( VECTOR2I( 300000, 0 ), nullptr, 2 ) );
 
    BOOST_REQUIRE_MESSAGE( iface.m_viasDisplayed > 0, "Via was not highlighted as a violation" );
    BOOST_CHECK_MESSAGE( iface.m_nullShapes == 0, "Highlighted front/inner/back via has no resolvable shape" );
}
 
 
namespace
{
class COUNTED_HOLE : public PNS::HOLE
{
public:
    COUNTED_HOLE( SHAPE* aShape, int& aAlive ) :
            PNS::HOLE( aShape ),
            m_alive( aAlive )
    {
        m_alive++;
    }
 
    ~COUNTED_HOLE() override { m_alive--; }
 
private:
    int& m_alive;
};
} // namespace
 

BOOST_AUTO_TEST_CASE( PNSNodeFreesHolesOfItsViasAndSolids )
{
    int holesAlive = 0;
 
    {
        PNS::NODE world;
 
        PNS::VIA* via = new PNS::VIA( VECTOR2I( 0, 0 ), PNS_LAYER_RANGE( F_Cu, B_Cu ), 50000, 10000 );
        via->SetHole( new COUNTED_HOLE( new SHAPE_CIRCLE( VECTOR2I( 0, 0 ), 5000 ), holesAlive ) );
        world.AddRaw( via );
 
        std::unique_ptr<PNS::SOLID> solid = std::make_unique<PNS::SOLID>();
        solid->SetShape( new SHAPE_CIRCLE( VECTOR2I( 1000000, 0 ), 50000 ) );
        solid->SetLayers( PNS_LAYER_RANGE( F_Cu, B_Cu ) );
        solid->SetHole( new COUNTED_HOLE( new SHAPE_CIRCLE( VECTOR2I( 1000000, 0 ), 5000 ), holesAlive ) );
        world.Add( std::move( solid ) );
 
        // A via added and removed again is freed as garbage, with the hole handed back to it
        PNS::VIA* removed = new PNS::VIA( VECTOR2I( 2000000, 0 ), PNS_LAYER_RANGE( F_Cu, B_Cu ), 50000, 10000 );
        removed->SetHole( new COUNTED_HOLE( new SHAPE_CIRCLE( VECTOR2I( 2000000, 0 ), 5000 ), holesAlive ) );
        world.AddRaw( removed );
        world.Remove( removed );
 
        BOOST_CHECK_EQUAL( holesAlive, 3 );
    }
 
    BOOST_CHECK_EQUAL( holesAlive, 0 );
}