fix tests

Change-Id: Ib090d9a6a007a738a0603d1d0a38d5b274feadcc

chart2/source/tools/AxisHelper.cxx

@@ -151,7 +151,7 @@ sal_Int32 AxisHelper::getExplicitNumberFormatKeyForAxis(
         //check whether we have a percent scale -> use percent format
         if( xNumberFormatsSupplier.is() )
         {
-            ChartModel* pModel = dynamic_cast<ChartModel*>( xNumberFormatsSupplier.get() );
+            ChartModel* pModel = dynamic_cast<ChartModel*>( xChartDoc.get() );
             assert(pModel);
             ScaleData aData = AxisHelper::getDateCheckedScale( xAxis, *pModel );
             if( aData.AxisType==AxisType::PERCENT )

chart2/source/tools/ExplicitCategoriesProvider.cxx

@@ -187,7 +187,7 @@ void ExplicitCategoriesProvider::convertCategoryAnysToText( uno::Sequence< OUStr
     {
         Reference< chart2::XAxis > xAxis( xCooSysModel->getAxisByDimension(0,0) );
         nAxisNumberFormat = AxisHelper::getExplicitNumberFormatKeyForAxis(
-                  xAxis, xCooSysModel, rModel.getNumberFormatsSupplier(), false );
+            xAxis, xCooSysModel, uno::Reference< util::XNumberFormatsSupplier> (static_cast< ::cppu::OWeakObject* >( &rModel ), uno::UNO_QUERY), false );
     }
 
     sal_Int32 nLabelColor;