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Unit test for pseudocolor
git-svn-id: http://svn.osgeo.org/qgis/trunk@7981 c8812cc2-4d05-0410-92ff-de0c093fc19c
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timlinux committed Jan 16, 2008
1 parent 9079cfd commit 231c70a60537f2e33abc984f7cc9b4d4e1c09df9
Showing with 23 additions and 10 deletions.
  1. +23 −10 tests/src/core/testqgsrasterlayer.cpp
@@ -46,10 +46,11 @@ class TestQgsRasterLayer: public QObject
void cleanup(){};// will be called after every testfunction.

void isValid();
void pseudoColor();
void checkDimensions();
private:
void render(QString theFileName);
QgsRasterLayer * mpLayer;
QgsRasterLayer * mpRasterLayer;
QgsMapRender * mpMapRenderer;
};

@@ -72,29 +73,41 @@ void TestQgsRasterLayer::initTestCase()
QString myFileName (TEST_DATA_DIR); //defined in CmakeLists.txt
myFileName = myFileName + QDir::separator() + "tenbytenraster.asc";
QFileInfo myRasterFileInfo ( myFileName );
mpLayer = new QgsRasterLayer ( myRasterFileInfo.filePath(),
mpRasterLayer = new QgsRasterLayer ( myRasterFileInfo.filePath(),
myRasterFileInfo.completeBaseName() );
// Register the layer with the registry
QgsMapLayerRegistry::instance()->addMapLayer(mpLayer);
QgsMapLayerRegistry::instance()->addMapLayer(mpRasterLayer);
// add the test layer to the maprender
mpMapRenderer = new QgsMapRender();
QStringList myLayers;
myLayers << mpLayer->getLayerID();
myLayers << mpRasterLayer->getLayerID();
mpMapRenderer->setLayerSet(myLayers);
}

void TestQgsRasterLayer::isValid()
{
QVERIFY ( mpLayer->isValid() );
QVERIFY ( mpRasterLayer->isValid() );
render("raster_test.png");
}

void TestQgsRasterLayer::pseudoColor()
{
mpRasterLayer->setDrawingStyle(QgsRasterLayer::SINGLE_BAND_PSEUDO_COLOR);
mpRasterLayer->setColorShadingAlgorithm(QgsRasterLayer::PSEUDO_COLOR);
mpRasterLayer->setContrastEnhancementAlgorithm(
QgsContrastEnhancement::STRETCH_TO_MINMAX, false);
mpRasterLayer->setMinimumValue(mpRasterLayer->getGrayBandName(),0.0, false);
mpRasterLayer->setMaximumValue(mpRasterLayer->getGrayBandName(),0.0);
render("raster_pseudo_test.png");
}

void TestQgsRasterLayer::checkDimensions()
{
QVERIFY ( mpLayer->getRasterXDim() == 10 );
QVERIFY ( mpLayer->getRasterYDim() == 10 );
QVERIFY ( mpRasterLayer->getRasterXDim() == 10 );
QVERIFY ( mpRasterLayer->getRasterYDim() == 10 );
// regression check for ticket #832
// note getRasterBandStats call is base 1
QVERIFY ( mpLayer->getRasterBandStats(1).elementCount == 100 );
QVERIFY ( mpRasterLayer->getRasterBandStats(1).elementCount == 100 );
}

void TestQgsRasterLayer::render(QString theFileName)
@@ -107,9 +120,9 @@ void TestQgsRasterLayer::render(QString theFileName)
myPixmap.fill ( QColor ( "#98dbf9" ) );
QPainter myPainter( &myPixmap );
mpMapRenderer->setOutputSize( QSize ( 100,100 ),72 );
mpMapRenderer->setExtent(mpLayer->extent());
mpMapRenderer->setExtent(mpRasterLayer->extent());
qDebug ("Extents set to:");
qDebug (mpLayer->extent().stringRep());
qDebug (mpRasterLayer->extent().stringRep());
QTime myTime;
myTime.start();
mpMapRenderer->render( &myPainter );

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