add test for world file creation

qgis · Sep 29, 2023 · 6a563f8 · 6a563f8
1 parent 6efed1d
commit 6a563f8
Showing 1 changed file with 30 additions and 0 deletions.
diff --git a/tests/src/app/testqgsgeoreferencer.cpp b/tests/src/app/testqgsgeoreferencer.cpp
@@ -51,6 +51,7 @@ class TestQgsGeoreferencer : public QObject
     void testListModel();
     void testListModelCrs();
     void testGdalCommands();
+    void testWorldFile();
 
   private:
     QgisApp *mQgisApp = nullptr;
@@ -876,5 +877,34 @@ void TestQgsGeoreferencer::testGdalCommands()
               QStringLiteral( TEST_DATA_DIR ) + QStringLiteral( "/landsat.tif" ) ) );
 }
 
+void TestQgsGeoreferencer::testWorldFile()
+{
+  QgsGeoreferencerMainWindow window;
+  window.openLayer( Qgis::LayerType::Raster, QStringLiteral( TEST_DATA_DIR ) + QStringLiteral( "/landsat.tif" ) );
+  QString worldFileName = QStringLiteral( TEST_DATA_DIR ) + QStringLiteral( "/landsat.wld" );
+
+  QVERIFY( window.writeWorldFile( QgsPointXY( 0, 0 ), 1.0, 1.0, 0 ) );
+
+  QFile file( worldFileName );
+  QVERIFY( file.open( QIODevice::ReadOnly | QIODevice::Text ) );
+
+  QTextStream stream( &file );
+  QVector<double> values;
+  values.reserve( 6 );
+  while ( !stream.atEnd() )
+  {
+    values << stream.readLine().toDouble();
+  }
+  file.close();
+  QFile::remove( worldFileName );
+
+  QCOMPARE( values.at( 0 ), 1.0 );
+  QCOMPARE( values.at( 1 ), 0 );
+  QCOMPARE( values.at( 2 ), 0 );
+  QCOMPARE( values.at( 3 ), -1.0 );
+  QCOMPARE( values.at( 4 ), 0.5 ); // center of the origin pixel
+  QCOMPARE( values.at( 5 ), -0.5 );
+}
+
 QGSTEST_MAIN( TestQgsGeoreferencer )
 #include "testqgsgeoreferencer.moc"