First little test case

Author: homann

tests/src/gui/CMakeLists.txt

@@ -118,4 +118,5 @@ ADD_QGIS_TEST(zoomtest testqgsmaptoolzoom.cpp)
 #ADD_EXECUTABLE(qgis_rendererv2gui ${rendererv2gui_SRCS} ${rendererv2gui_MOC_SRCS})
 
 ADD_QGIS_TEST(histogramtest testqgsrasterhistogram.cpp)
+ADD_QGIS_TEST(projectionissues testprojectionissues.cpp)
 

tests/src/gui/testprojectionissues.cpp

@@ -0,0 +1,100 @@
+/***************************************************************************
+                         testprojectionissues.cpp
+                         ---------------------------
+    begin                : September 2012
+    copyright            : (C) 2012 by Magnus Homann
+    email                : magnus at homann dot se
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   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 "qgsapplication.h"
+#include "qgsmapcanvas.h"
+#include "qgsmaplayerregistry.h"
+#include "qgsmaprenderer.h"
+#include "qgsmultibandcolorrenderer.h"
+#include "qgsrasterlayer.h"
+#include <QObject>
+#include <QtTest>
+
+class TestProjectionIssues: public QObject
+{
+    Q_OBJECT;
+  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 init();// will be called before each testfunction is executed.
+    void cleanup();// will be called after every testfunction.
+  void issue5895();// test for #5895
+  private:
+    QgsRasterLayer* mRasterLayer;
+    QgsMapCanvas*   mMapCanvas;
+};
+
+void TestProjectionIssues::initTestCase()
+{
+  QgsApplication::init();
+  QgsApplication::initQgis();
+
+  //create maplayer from testdata and add to layer registry
+  QFileInfo rasterFileInfo( QString( TEST_DATA_DIR ) + QDir::separator() +  "issue5895_world.tif" );
+  mRasterLayer = new QgsRasterLayer( rasterFileInfo.filePath(),
+                                     rasterFileInfo.completeBaseName() );
+  QgsMultiBandColorRenderer* rasterRenderer = new QgsMultiBandColorRenderer( mRasterLayer->dataProvider(), 2, 3, 4 );
+  mRasterLayer->setRenderer( rasterRenderer );
+
+  QList<QgsMapLayer *> mapLayers;
+  mapLayers.append( mRasterLayer );
+  QgsMapLayerRegistry::instance()->addMapLayers( mapLayers );
+
+  // Add all layers in registry to the canvas
+  QList<QgsMapCanvasLayer> canvasLayers;
+  foreach ( QgsMapLayer* layer, QgsMapLayerRegistry::instance()->mapLayers().values() )
+  {
+    canvasLayers.append( QgsMapCanvasLayer( layer ) );
+  }
+
+  // create canvas
+  mMapCanvas = new QgsMapCanvas();
+  mMapCanvas->setLayerSet( canvasLayers );
+
+  //reproject to SWEDREF 99 TM
+  QgsCoordinateReferenceSystem destCRS;
+  destCRS.createFromId( 3006, QgsCoordinateReferenceSystem::EpsgCrsId );
+  mMapCanvas->mapRenderer()->setDestinationCrs( destCRS );
+  mMapCanvas->mapRenderer()->setProjectionsEnabled( true );
+
+};
+
+void TestProjectionIssues::cleanupTestCase()
+{
+  delete mMapCanvas;
+  delete mRasterLayer;
+};
+
+void TestProjectionIssues::init()
+{
+
+};
+
+void TestProjectionIssues::cleanup()
+{
+
+};
+
+void TestProjectionIssues::issue5895()
+{
+  QgsRectangle largeExtent( -610861, 5101721, 2523921, 6795055 );
+  mMapCanvas->setExtent( largeExtent );
+  mMapCanvas->zoomByFactor( 2.0 ); // Zoom out. This should exceed the transform limits.
+};
+
+QTEST_MAIN( TestProjectionIssues )
+#include "moc_testprojectionissues.cxx"