Add test coverage to add part map tool

tests/src/app/CMakeLists.txt

@@ -20,6 +20,7 @@ set(TESTS
   testqgsdwgimportdialog.cpp
   testqgsfieldcalculator.cpp
   testqgsmapcanvasdockwidget.cpp
+  testqgsmaptooladdpart.cpp
   testqgsmaptooleditannotation.cpp
   testqgsmaptoolidentifyaction.cpp
   testqgsmaptoollabel.cpp

tests/src/app/testqgsmaptooladdpart.cpp

@@ -0,0 +1,176 @@
+/***************************************************************************
+     testqgsmaptooladdpart.cpp
+     --------------------------------
+    Date                 : 2023-09-25
+    Copyright            : (C) 2023 by Mathieu Pellerin
+    Email                : [email protected]
+ ***************************************************************************
+ *                                                                         *
+ *   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.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+#include "qgstest.h"
+
+#include "qgisapp.h"
+#include "qgsgeometry.h"
+#include "qgsmapcanvas.h"
+#include "qgsmaptooladdpart.h"
+#include "qgsproject.h"
+#include "qgssettingsregistrycore.h"
+#include "qgsvectorlayer.h"
+#include "qgsmapmouseevent.h"
+#include "testqgsmaptoolutils.h"
+
+
+/**
+ * \ingroup UnitTests
+ * This is a unit test for the add part map tool
+ */
+class TestQgsMapToolAddPart: public QObject
+{
+    Q_OBJECT
+  public:
+    TestQgsMapToolAddPart();
+
+  private slots:
+    void initTestCase();// will be called before the first testfunction is executed.
+    void cleanupTestCase();// will be called after the last testfunction was executed.
+
+    void testAddPart();
+
+  private:
+    QPoint mapToPoint( double x, double y );
+
+    QgisApp *mQgisApp = nullptr;
+    QgsMapCanvas *mCanvas = nullptr;
+    QgsMapToolAddPart *mCaptureTool = nullptr;
+    QgsVectorLayer *mLayerMultiPolygon = nullptr;
+};
+
+TestQgsMapToolAddPart::TestQgsMapToolAddPart() = default;
+
+
+//runs before all tests
+void TestQgsMapToolAddPart::initTestCase()
+{
+  // init QGIS's paths - true means that all path will be inited from prefix
+  QgsApplication::init();
+  QgsApplication::initQgis();
+
+  // Set up the QSettings environment
+  QCoreApplication::setOrganizationName( QStringLiteral( "QGIS" ) );
+  QCoreApplication::setOrganizationDomain( QStringLiteral( "qgis.org" ) );
+  QCoreApplication::setApplicationName( QStringLiteral( "QGIS-TEST" ) );
+
+  mQgisApp = new QgisApp();
+
+  mCanvas = new QgsMapCanvas();
+
+  mCanvas->setDestinationCrs( QgsCoordinateReferenceSystem( QStringLiteral( "EPSG:3946" ) ) );
+
+  mCanvas->setFrameStyle( QFrame::NoFrame );
+  mCanvas->resize( 512, 512 );
+  mCanvas->setExtent( QgsRectangle( 0, 0, 8, 8 ) );
+  mCanvas->show(); // to make the canvas resize
+  mCanvas->hide();
+
+  // make testing layers
+  mLayerMultiPolygon = new QgsVectorLayer( QStringLiteral( "MultiPolygon?crs=EPSG:3946" ), QStringLiteral( "multipolygon" ), QStringLiteral( "memory" ) );
+  QVERIFY( mLayerMultiPolygon->isValid() );
+  QgsProject::instance()->addMapLayers( QList<QgsMapLayer *>() << mLayerMultiPolygon );
+
+  mLayerMultiPolygon->startEditing();
+  QgsFeature f;
+  const QString wkt( "MultiPolygon (((2 2, 4 2, 4 4, 2 4)))" );
+  f.setGeometry( QgsGeometry::fromWkt( wkt ) );
+  mLayerMultiPolygon->dataProvider()->addFeatures( QgsFeatureList() << f );
+  QCOMPARE( mLayerMultiPolygon->featureCount(), ( long )1 );
+  QCOMPARE( mLayerMultiPolygon->getFeature( 1 ).geometry().asWkt(), wkt );
+
+  mCanvas->setCurrentLayer( mLayerMultiPolygon );
+
+  // create the tool
+  mCaptureTool = new QgsMapToolAddPart( mCanvas );
+  mCanvas->setMapTool( mCaptureTool );
+
+  QCOMPARE( mCanvas->mapSettings().outputSize(), QSize( 512, 512 ) );
+  QCOMPARE( mCanvas->mapSettings().visibleExtent(), QgsRectangle( 0, 0, 8, 8 ) );
+}
+
+//runs after all tests
+void TestQgsMapToolAddPart::cleanupTestCase()
+{
+  delete mCaptureTool;
+  delete mCanvas;
+  QgsApplication::exitQgis();
+}
+
+QPoint TestQgsMapToolAddPart::mapToPoint( double x, double y )
+{
+  const QgsPointXY mapPoint = mCanvas->mapSettings().mapToPixel().transform( x, y );
+
+  return QPoint( static_cast<int>( std::round( mapPoint.x() ) ), static_cast<int>( std::round( mapPoint.y() ) ) );
+}
+
+void TestQgsMapToolAddPart::testAddPart()
+{
+  mLayerMultiPolygon->select( 1 );
+
+  std::unique_ptr< QgsMapMouseEvent > event( new QgsMapMouseEvent(
+        mCanvas,
+        QEvent::MouseButtonRelease,
+        mapToPoint( 5, 5 ),
+        Qt::LeftButton
+      ) );
+  mCaptureTool->cadCanvasReleaseEvent( event.get() );
+
+  event.reset( new QgsMapMouseEvent(
+                 mCanvas,
+                 QEvent::MouseButtonRelease,
+                 mapToPoint( 5, 5 ),
+                 Qt::LeftButton
+               ) );
+  mCaptureTool->cadCanvasReleaseEvent( event.get() );
+
+  event.reset( new QgsMapMouseEvent(
+                 mCanvas,
+                 QEvent::MouseButtonRelease,
+                 mapToPoint( 6, 5 ),
+                 Qt::LeftButton
+               ) );
+  mCaptureTool->cadCanvasReleaseEvent( event.get() );
+
+  event.reset( new QgsMapMouseEvent(
+                 mCanvas,
+                 QEvent::MouseButtonRelease,
+                 mapToPoint( 6, 6 ),
+                 Qt::LeftButton
+               ) );
+  mCaptureTool->cadCanvasReleaseEvent( event.get() );
+
+  event.reset( new QgsMapMouseEvent(
+                 mCanvas,
+                 QEvent::MouseButtonRelease,
+                 mapToPoint( 5, 6 ),
+                 Qt::LeftButton
+               ) );
+  mCaptureTool->cadCanvasReleaseEvent( event.get() );
+
+  event.reset( new QgsMapMouseEvent(
+                 mCanvas,
+                 QEvent::MouseButtonRelease,
+                 mapToPoint( 5, 5 ),
+                 Qt::RightButton
+               ) );
+  mCaptureTool->cadCanvasReleaseEvent( event.get() );
+
+  const QString wkt = "MultiPolygon (((2 2, 4 2, 4 4, 2 4)),((5 5, 5 5, 6 5, 6 6, 5 6, 5 5)))";
+  QCOMPARE( mLayerMultiPolygon->getFeature( 1 ).geometry().asWkt(), wkt );
+}
+
+QGSTEST_MAIN( TestQgsMapToolAddPart )
+#include "testqgsmaptooladdpart.moc"