use temp copy of points.shp

tests/src/core/testqgsofflineediting.cpp

@@ -41,6 +41,7 @@ class TestQgsOfflineEditing : public QObject
     QStringList layerIds;
     long numberOfFeatures;
     int numberOfFields;
+    QTemporaryDir tempDir;
 
   private slots:
     void initTestCase();// will be called before the first testfunction is executed.
@@ -75,8 +76,12 @@ void TestQgsOfflineEditing::cleanupTestCase()
 void TestQgsOfflineEditing::init()
 {
   QString myFileName( TEST_DATA_DIR ); //defined in CmakeLists.txt
-  myFileName = myFileName + "/points.shp";
-  QFileInfo myMapFileInfo( myFileName );
+  QString myTempDirName = tempDir.path();
+  QFile::copy( myFileName + "/points.shp", myTempDirName + "/points.shp" );
+  QFile::copy( myFileName + "/points.shx", myTempDirName + "/points.shx" );
+  QFile::copy( myFileName + "/points.dbf", myTempDirName + "/points.dbf" );
+  QString myTempFileName = myTempDirName + "/points.shp";
+  QFileInfo myMapFileInfo( myTempFileName );
   mpLayer = new QgsVectorLayer( myMapFileInfo.filePath(),
                                 myMapFileInfo.completeBaseName(), QStringLiteral( "ogr" ) );
   QgsProject::instance()->addMapLayer( mpLayer );