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nyalldawsonnyalldawson
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Add some GDAL provider unit tests...
(...doing penance for my 2.8 sins)
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‎tests/src/providers/CMakeLists.txt

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@@ -74,6 +74,7 @@ ENDMACRO (ADD_QGIS_TEST)
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# Tests:
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ADD_QGIS_TEST(wcsprovidertest testqgswcsprovider.cpp)
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ADD_QGIS_TEST(gdalprovidertest testqgsgdalprovider.cpp)
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#############################################################
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# WCS public servers test:

‎tests/src/providers/testqgsgdalprovider.cpp

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/***************************************************************************
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testqgsgdalprovider.cpp
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--------------------------------------
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Date : March 2015
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Copyright : (C) 2015 by Nyall Dawson
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Email : nyall.dawson@gmail.com
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include <QtTest/QtTest>
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#include <QObject>
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#include <QString>
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#include <QStringList>
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#include <QObject>
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#include <QApplication>
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#include <QFileInfo>
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#include <QDir>
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//qgis includes...
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#include <qgis.h>
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#include <qgsapplication.h>
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#include <qgsproviderregistry.h>
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#include <qgsrasterdataprovider.h>
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#include <qgsrectangle.h>
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/** \ingroup UnitTests
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* This is a unit test for the gdal provider
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*/
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class TestQgsGdalProvider : public QObject
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{
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Q_OBJECT
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private slots:
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void initTestCase();// will be called before the first testfunction is executed.
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void cleanupTestCase();// will be called after the last testfunction was executed.
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void init() {}// will be called before each testfunction is executed.
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void cleanup() {}// will be called after every testfunction.
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void scaleDataType(); //test resultant data types for int raster with float scale (#11573)
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void warpedVrt(); //test loading raster which requires a warped vrt
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private:
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QString mTestDataDir;
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QString mReport;
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};
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//runs before all tests
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void TestQgsGdalProvider::initTestCase()
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{
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// init QGIS's paths - true means that all path will be inited from prefix
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QgsApplication::init();
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QgsApplication::initQgis();
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mTestDataDir = QString( TEST_DATA_DIR ) + QDir::separator(); //defined in CmakeLists.txt
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mReport = "<h1>GDAL Provider Tests</h1>\n";
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}
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//runs after all tests
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void TestQgsGdalProvider::cleanupTestCase()
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{
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QgsApplication::exitQgis();
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QString myReportFile = QDir::tempPath() + QDir::separator() + "qgistest.html";
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QFile myFile( myReportFile );
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if ( myFile.open( QIODevice::WriteOnly | QIODevice::Append ) )
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{
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QTextStream myQTextStream( &myFile );
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myQTextStream << mReport;
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myFile.close();
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}
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}
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void TestQgsGdalProvider::scaleDataType()
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{
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QString rasterWithOffset = QString( TEST_DATA_DIR ) + QDir::separator() + "int_raster_with_scale.tif";
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QgsDataProvider* provider = QgsProviderRegistry::instance()->provider( "gdal", rasterWithOffset );
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QgsRasterDataProvider* rp = dynamic_cast< QgsRasterDataProvider* >( provider );
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QVERIFY( rp );
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//raster is an integer data type, but has a scale < 1, so data type must be float
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QCOMPARE( rp->dataType( 1 ), QGis::Float32 );
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QCOMPARE( rp->srcDataType( 1 ), QGis::Float32 );
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}
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void TestQgsGdalProvider::warpedVrt()
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{
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QString raster = QString( TEST_DATA_DIR ) + QDir::separator() + "requires_warped_vrt.tif";
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QgsDataProvider* provider = QgsProviderRegistry::instance()->provider( "gdal", raster );
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QgsRasterDataProvider* rp = dynamic_cast< QgsRasterDataProvider* >( provider );
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QVERIFY( rp );
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qDebug() << "x min: " << rp->extent().xMinimum();
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qDebug() << "x max: " << rp->extent().xMaximum();
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qDebug() << "y min: " << rp->extent().yMinimum();
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qDebug() << "y max: " << rp->extent().yMaximum();
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QVERIFY( qgsDoubleNear( rp->extent().xMinimum(), 2058589, 1 ) );
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QVERIFY( qgsDoubleNear( rp->extent().xMaximum(), 3118999, 1 ) );
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QVERIFY( qgsDoubleNear( rp->extent().yMinimum(), 2281355, 1 ) );
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QVERIFY( qgsDoubleNear( rp->extent().yMaximum(), 3129683, 1 ) );
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}
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QTEST_MAIN( TestQgsGdalProvider )
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#include "testqgsgdalprovider.moc"

‎tests/testdata/int_raster_with_scale.tif

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‎tests/testdata/int_raster_with_scale.tif.aux.xml

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<PAMDataset>
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<Metadata>
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<MDI key="AOD Source">MODIS (MOD08_D3)</MDI>
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<MDI key="AOD Value">0.069</MDI>
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<MDI key="GIPPY Version">1.0.2</MDI>
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<MDI key="GIPS Version">0.7.1</MDI>
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<MDI key="GIPS-landsat Version">0.9.0</MDI>
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</Metadata>
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<PAMRasterBand band="1">
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<Description>ndvi</Description>
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<UnitType>other</UnitType>
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<Scale>9.999999747378752e-05</Scale>
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<Histograms>
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<HistItem>
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<HistMin>7091</HistMin>
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<HistMax>8573</HistMax>
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<BucketCount>2</BucketCount>
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<IncludeOutOfRange>0</IncludeOutOfRange>
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<Approximate>0</Approximate>
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<HistCounts>23|33</HistCounts>
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</HistItem>
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</Histograms>
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<Metadata>
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<MDI key="STATISTICS_MAXIMUM">8326</MDI>
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<MDI key="STATISTICS_MEAN">7873.3214285714</MDI>
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<MDI key="STATISTICS_MINIMUM">7338</MDI>
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<MDI key="STATISTICS_STDDEV">261.16183455194</MDI>
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</Metadata>
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</PAMRasterBand>
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</PAMDataset>

‎tests/testdata/requires_warped_vrt.tif

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