chart2/qa/extras/PivotChartTest.cxx                          |    4 
 chart2/qa/extras/chart2_trendcalculators.cxx                 |    2 
 chart2/qa/extras/chart2export.cxx                            |  186 +++++------
 chart2/qa/extras/chart2export2.cxx                           |  142 ++++----
 chart2/qa/extras/chart2geometry.cxx                          |   28 -
 chart2/qa/extras/chart2import.cxx                            |  162 ++++-----
 chart2/qa/extras/chart2import2.cxx                           |   74 ++--
 chart2/qa/extras/charttest.hxx                               |   22 -
 chart2/qa/extras/xshape/chart2xshape.cxx                     |   12 
 chart2/source/controller/chartapiwrapper/DiagramWrapper.cxx  |   27 -
 chart2/source/controller/dialogs/ObjectNameProvider.cxx      |    5 
 chart2/source/controller/dialogs/dlg_ObjectProperties.cxx    |    4 
 chart2/source/controller/main/ChartController_Properties.cxx |    9 
 chart2/source/controller/main/ChartController_Tools.cxx      |    4 
 chart2/source/inc/ObjectIdentifier.hxx                       |   12 
 chart2/source/tools/ObjectIdentifier.cxx                     |   85 ++---
 chart2/source/tools/XMLRangeHelper.cxx                       |    4 
 17 files changed, 393 insertions(+), 389 deletions(-)

New commits:
commit dbe92dcfa79e3336411661fc94106deeba9317d6
Author:     Noel Grandin <noel.gran...@collabora.co.uk>
AuthorDate: Thu Apr 14 11:45:25 2022 +0200
Commit:     Noel Grandin <noel.gran...@collabora.co.uk>
CommitDate: Thu Apr 14 15:13:34 2022 +0200

    use more string_view in chart2
    
    Change-Id: I9ab6cd3905bfb7c811e7ad14b54ced6c42d2e077
    Reviewed-on: https://gerrit.libreoffice.org/c/core/+/133003
    Tested-by: Jenkins
    Reviewed-by: Noel Grandin <noel.gran...@collabora.co.uk>

diff --git a/chart2/qa/extras/PivotChartTest.cxx 
b/chart2/qa/extras/PivotChartTest.cxx
index ee024531e88b..baa1c925132e 100644
--- a/chart2/qa/extras/PivotChartTest.cxx
+++ b/chart2/qa/extras/PivotChartTest.cxx
@@ -316,7 +316,7 @@ void PivotChartTest::testRoundtrip()
 
     std::vector<double> aReference2 { 101879.458079, 178636.929704, 
314626.484864 };
 
-    load(u"/chart2/qa/extras/data/ods/", "PivotChartRoundTrip.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"PivotChartRoundTrip.ods");
 
     xChartDoc = getPivotChartDocFromSheet(1, mxComponent);
     CPPUNIT_ASSERT(xChartDoc.is());
@@ -371,7 +371,7 @@ void PivotChartTest::testChangePivotTable()
     uno::Sequence<uno::Any> xSequence;
     Reference<chart2::XChartDocument> xChartDoc;
 
-    load(u"/chart2/qa/extras/data/ods/", "PivotTableExample.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"PivotTableExample.ods");
 
     // Check we have the Pivot Table
     OUString sPivotTableName("DataPilot1");
diff --git a/chart2/qa/extras/chart2_trendcalculators.cxx 
b/chart2/qa/extras/chart2_trendcalculators.cxx
index c13c1666725e..309df9f2bfb4 100644
--- a/chart2/qa/extras/chart2_trendcalculators.cxx
+++ b/chart2/qa/extras/chart2_trendcalculators.cxx
@@ -64,7 +64,7 @@ private:
 void Chart2TrendCalculators::setUp()
 {
     ChartTest::setUp();
-    load(u"/chart2/qa/extras/data/ods/", "trend_calculators.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"trend_calculators.ods");
 }
 
 void Chart2TrendCalculators::tearDown()
diff --git a/chart2/qa/extras/chart2export.cxx 
b/chart2/qa/extras/chart2export.cxx
index c333ab9d651e..fc6ffc4d4dbf 100644
--- a/chart2/qa/extras/chart2export.cxx
+++ b/chart2/qa/extras/chart2export.cxx
@@ -385,7 +385,7 @@ void checkTrendlinesInChart(uno::Reference< 
chart2::XChartDocument > const & xCh
 // improve the test
 void Chart2ExportTest::testErrorBarXLSX()
 {
-    load(u"/chart2/qa/extras/data/ods/", "error_bar.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"error_bar.ods");
     {
         // make sure the ODS import was successful
         uno::Reference< chart2::XChartDocument > xChartDoc = 
getChartDocFromSheet( 0, mxComponent );
@@ -421,7 +421,7 @@ void Chart2ExportTest::testErrorBarXLSX()
 
 void Chart2ExportTest::testErrorBarPropXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "testErrorBarProp.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"testErrorBarProp.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart","Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -441,7 +441,7 @@ void Chart2ExportTest::testErrorBarPropXLSX()
 void Chart2ExportTest::testTrendline()
 {
     mbSkipValidation = true;
-    load(u"/chart2/qa/extras/data/ods/", "trendline.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"trendline.ods");
     checkTrendlinesInChart(getChartDocFromSheet( 0, mxComponent));
     reload("calc8");
     checkTrendlinesInChart(getChartDocFromSheet( 0, mxComponent));
@@ -449,7 +449,7 @@ void Chart2ExportTest::testTrendline()
 
 void Chart2ExportTest::testTrendlineOOXML()
 {
-    load(u"/chart2/qa/extras/data/ods/", "trendline.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"trendline.ods");
     checkTrendlinesInChart(getChartDocFromSheet( 0, mxComponent));
     reload("Calc Office Open XML");
     checkTrendlinesInChart(getChartDocFromSheet( 0, mxComponent));
@@ -458,7 +458,7 @@ void Chart2ExportTest::testTrendlineOOXML()
 void Chart2ExportTest::testTrendlineXLS()
 {
     mbSkipValidation = true;
-    load(u"/chart2/qa/extras/data/ods/", "trendline.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"trendline.ods");
     checkTrendlinesInChart(getChartDocFromSheet( 0, mxComponent));
     reload("MS Excel 97");
     checkTrendlinesInChart(getChartDocFromSheet( 0, mxComponent));
@@ -467,7 +467,7 @@ void Chart2ExportTest::testTrendlineXLS()
 void Chart2ExportTest::testMovingAverage()
 {
     mbSkipValidation = true;
-    load(u"/chart2/qa/extras/data/ods/", "moving-type.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"moving-type.ods");
     reload("calc8");
 
     uno::Reference< chart2::XChartDocument > xChartDoc = getChartDocFromSheet( 
0, mxComponent);
@@ -502,7 +502,7 @@ void Chart2ExportTest::testStockChart()
      * an attribute val of index should start from 1 and not from 0.
      * Which was problem area.
      */
-    load(u"/chart2/qa/extras/data/docx/", "testStockChart.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"testStockChart.docx");
 
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office Open 
XML Text");
     CPPUNIT_ASSERT(pXmlDoc);
@@ -517,7 +517,7 @@ void Chart2ExportTest::testStockChart()
 
 void Chart2ExportTest::testBarChart()
 {
-    load(u"/chart2/qa/extras/data/docx/", "testBarChart.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"testBarChart.docx");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office Open 
XML Text");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -528,14 +528,14 @@ void Chart2ExportTest::testCrosses()
 {
     // test crosses val="autoZero" with DOCX
     {
-        load(u"/chart2/qa/extras/data/docx/", "Bar_horizontal_cone.docx");
+        load(u"/chart2/qa/extras/data/docx/", u"Bar_horizontal_cone.docx");
         xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office 
Open XML Text");
 
         assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:plotArea/c:catAx/c:crosses", "val", "autoZero");
     }
     // tdf#142351: test crossesAt val="-50" with XLSX
     {
-        load(u"/chart2/qa/extras/data/xlsx/", "tdf142351.xlsx");
+        load(u"/chart2/qa/extras/data/xlsx/", u"tdf142351.xlsx");
         xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office 
Open XML");
         CPPUNIT_ASSERT(pXmlDoc);
 
@@ -545,7 +545,7 @@ void Chart2ExportTest::testCrosses()
 
 void Chart2ExportTest::testScatterChartTextXValues()
 {
-    load(u"/chart2/qa/extras/data/docx/", "scatter-chart-text-x-values.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"scatter-chart-text-x-values.docx");
 
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromWriter(0), 
uno::UNO_QUERY);
     CPPUNIT_ASSERT(xChartDoc.is());
@@ -593,7 +593,7 @@ void Chart2ExportTest::testScatterChartTextXValues()
 
 void Chart2ExportTest::testScatterXAxisValues()
 {
-    load(u"/chart2/qa/extras/data/odt/", "tdf114657.odt");
+    load(u"/chart2/qa/extras/data/odt/", u"tdf114657.odt");
 
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office Open 
XML Text");
     CPPUNIT_ASSERT(pXmlDoc);
@@ -607,7 +607,7 @@ void Chart2ExportTest::testScatterXAxisValues()
 
 void Chart2ExportTest::testScatterXAxisCategories()
 {
-    load(u"/chart2/qa/extras/data/odt/", "tdf131143.odt");
+    load(u"/chart2/qa/extras/data/odt/", u"tdf131143.odt");
 
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office Open 
XML Text");
     CPPUNIT_ASSERT(pXmlDoc);
@@ -618,7 +618,7 @@ void Chart2ExportTest::testScatterXAxisCategories()
 
 void Chart2ExportTest::testChartDataTable()
 {
-    load(u"/chart2/qa/extras/data/docx/", "testChartDataTable.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"testChartDataTable.docx");
 
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office Open 
XML Text");
     CPPUNIT_ASSERT(pXmlDoc);
@@ -629,7 +629,7 @@ void Chart2ExportTest::testChartDataTable()
 
 void Chart2ExportTest::testChartExternalData()
 {
-    load(u"/chart2/qa/extras/data/docx/", "testMultipleChart.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"testMultipleChart.docx");
 
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office Open 
XML Text");
     CPPUNIT_ASSERT(pXmlDoc);
@@ -644,7 +644,7 @@ void Chart2ExportTest::testEmbeddingsGrabBag()
    // after saving file.
    // This test case tests whether embeddings files grabbagged properly in 
correct object.
 
-   load(u"/chart2/qa/extras/data/docx/", "testMultiplechartembeddings.docx" );
+   load(u"/chart2/qa/extras/data/docx/", u"testMultiplechartembeddings.docx" );
    uno::Reference<text::XTextDocument> xTextDocument(mxComponent, 
uno::UNO_QUERY);
    uno::Reference<beans::XPropertySet> xTextDocumentPropertySet(xTextDocument, 
uno::UNO_QUERY);
    uno::Sequence<beans::PropertyValue> aGrabBag(0);
@@ -679,7 +679,7 @@ void Chart2ExportTest::testEmbeddingsGrabBag()
 
 void Chart2ExportTest::testAreaChartLoad()
 {
-    load (u"/chart2/qa/extras/data/docx/", "testAreaChartLoad.docx");
+    load (u"/chart2/qa/extras/data/docx/", u"testAreaChartLoad.docx");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart","Office Open XML 
Text");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:plotArea/c:areaChart/c:ser/c:dLbls/c:showVal", "val", 
"1");
@@ -698,7 +698,7 @@ void Chart2ExportTest::testUpDownBars()
 
 void Chart2ExportTest::testDoughnutChart()
 {
-    load(u"/chart2/qa/extras/data/docx/", "doughnutChart.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"doughnutChart.docx");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office Open 
XML Text");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -707,7 +707,7 @@ void Chart2ExportTest::testDoughnutChart()
 
 void Chart2ExportTest::testDisplayUnits()
 {
-    load(u"/chart2/qa/extras/data/docx/", "DisplayUnits.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"DisplayUnits.docx");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office Open 
XML Text");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -725,7 +725,7 @@ void Chart2ExportTest::testDisplayUnits()
 
 void Chart2ExportTest::testFdo74115WallBitmapFill()
 {
-    load(u"/chart2/qa/extras/data/docx/", "fdo74115_WallBitmapFill.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"fdo74115_WallBitmapFill.docx");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office Open 
XML Text");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, "/c:chartSpace/c:chart/c:plotArea/c:spPr/a:blipFill");
@@ -733,7 +733,7 @@ void Chart2ExportTest::testFdo74115WallBitmapFill()
 
 void Chart2ExportTest::testPieChartWallLineStyle()
 {
-    load(u"/chart2/qa/extras/data/odt/", "testPieChartWallLineStyle.odt");
+    load(u"/chart2/qa/extras/data/odt/", u"testPieChartWallLineStyle.odt");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office Open 
XML Text");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:plotArea/c:spPr/a:ln/a:noFill");
@@ -743,7 +743,7 @@ void Chart2ExportTest::testPieChartWallLineStyle()
 
 void Chart2ExportTest::testFdo78290LineChartMarkerX()
 {
-    load(u"/chart2/qa/extras/data/docx/", "fdo78290_Line_Chart_Marker_x.docx");
+    load(u"/chart2/qa/extras/data/docx/", 
u"fdo78290_Line_Chart_Marker_x.docx");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office Open 
XML Text");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace[1]/c:chart[1]/c:plotArea[1]/c:lineChart[1]/c:ser[1]/c:marker[1]/c:symbol[1]","val","x");
@@ -754,7 +754,7 @@ void Chart2ExportTest::testFdo78290LineChartMarkerX()
 
 void Chart2ExportTest::testFdo78290ScatterChartMarkerX()
 {
-    load(u"/chart2/qa/extras/data/docx/", 
"fdo78290_Scatter_Chart_Marker_x.docx");
+    load(u"/chart2/qa/extras/data/docx/", 
u"fdo78290_Scatter_Chart_Marker_x.docx");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office Open 
XML Text");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace[1]/c:chart[1]/c:plotArea[1]/c:scatterChart[1]/c:ser[1]/c:marker[1]/c:symbol[1]","val","x");
@@ -766,7 +766,7 @@ void Chart2ExportTest::testFdo78290ScatterChartMarkerX()
 
 void Chart2ExportTest::testFdo78290CombinationChartMarkerX()
 {
-    load(u"/chart2/qa/extras/data/docx/", 
"fdo78290_Combination_Chart_Marker_x.docx");
+    load(u"/chart2/qa/extras/data/docx/", 
u"fdo78290_Combination_Chart_Marker_x.docx");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office Open 
XML Text");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace[1]/c:chart[1]/c:plotArea[1]/c:lineChart[1]/c:ser[1]/c:marker[1]/c:symbol[1]","val","x");
@@ -776,7 +776,7 @@ void Chart2ExportTest::testFdo78290CombinationChartMarkerX()
 void Chart2ExportTest::testTdf126115IndividualMarker()
 {
     // Check individual marker properties.
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf126115.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf126115.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     // 1. series
@@ -826,7 +826,7 @@ void Chart2ExportTest::testAxisNumberFormatODS()
 
     } aTest;
 
-    load(u"/chart2/qa/extras/data/ods/", "axis-numformats-linked.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"axis-numformats-linked.ods");
 
     Reference<chart2::XChartDocument> xChartDoc = getChartDocFromSheet(0, 
mxComponent);
     aTest.check(xChartDoc);
@@ -882,7 +882,7 @@ void Chart2ExportTest::testAxisNumberFormatXLS()
 
     } aTest;
 
-    load( u"/chart2/qa/extras/data/xls/", "axis_sourceformatting.xls" );
+    load( u"/chart2/qa/extras/data/xls/", u"axis_sourceformatting.xls" );
 
     Reference<chart2::XChartDocument> xChartDoc = getChartDocFromSheet( 0, 
mxComponent );
     aTest.check( xChartDoc, true, util::NumberFormat::PERCENT );
@@ -981,7 +981,7 @@ void Chart2ExportTest::testDataLabelBordersDOCX()
 
     } aTest;
 
-    load(u"/chart2/qa/extras/data/docx/", "data-label-borders.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"data-label-borders.docx");
 
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromWriter(0), 
uno::UNO_QUERY);
 
@@ -1009,7 +1009,7 @@ void Chart2ExportTest::testDataLabelBordersDOCX()
 
 void Chart2ExportTest::testDataLabel3DChartDOCX()
 {
-    load(u"/chart2/qa/extras/data/docx/", "3d-bar-label.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"3d-bar-label.docx");
 
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromWriter(0), 
uno::UNO_QUERY);
     CPPUNIT_ASSERT(xChartDoc.is());
@@ -1025,7 +1025,7 @@ void Chart2ExportTest::testDataLabel3DChartDOCX()
 
 void Chart2ExportTest::testDataLabelBarChartDOCX()
 {
-    load(u"/chart2/qa/extras/data/docx/", "bar-chart-labels.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"bar-chart-labels.docx");
 
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromWriter(0), 
uno::UNO_QUERY);
     CPPUNIT_ASSERT(xChartDoc.is());
@@ -1040,7 +1040,7 @@ void Chart2ExportTest::testDataLabelBarChartDOCX()
 
 void Chart2ExportTest::testDataLabelClusteredBarChartDOCX()
 {
-    load(u"/chart2/qa/extras/data/docx/", "clustered-bar-chart-labels.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"clustered-bar-chart-labels.docx");
 
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromWriter(0), 
uno::UNO_QUERY);
     CPPUNIT_ASSERT(xChartDoc.is());
@@ -1054,7 +1054,7 @@ void 
Chart2ExportTest::testDataLabelClusteredBarChartDOCX()
 
 void Chart2ExportTest::testDataLabelRadarChartDOCX()
 {
-    load(u"/chart2/qa/extras/data/docx/", "radar-chart-labels.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"radar-chart-labels.docx");
 
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromWriter(0), 
uno::UNO_QUERY);
     CPPUNIT_ASSERT(xChartDoc.is());
@@ -1069,7 +1069,7 @@ void Chart2ExportTest::testDataLabelRadarChartDOCX()
 
 void Chart2ExportTest::testDataLabelDoughnutChartDOCX()
 {
-    load(u"/chart2/qa/extras/data/docx/", "doughnut-chart-labels.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"doughnut-chart-labels.docx");
 
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromWriter(0), 
uno::UNO_QUERY);
     CPPUNIT_ASSERT(xChartDoc.is());
@@ -1084,7 +1084,7 @@ void Chart2ExportTest::testDataLabelDoughnutChartDOCX()
 
 void Chart2ExportTest::testDataLabelAreaChartDOCX()
 {
-    load(u"/chart2/qa/extras/data/docx/", "area-chart-labels.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"area-chart-labels.docx");
 
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromWriter(0), 
uno::UNO_QUERY);
     CPPUNIT_ASSERT(xChartDoc.is());
@@ -1103,7 +1103,7 @@ void Chart2ExportTest::testDataLabelDefaultLineChartDOCX()
     // label position (2010 does).  Make sure its default data label position
     // is RIGHT when exporting.
 
-    load(u"/chart2/qa/extras/data/docx/", 
"line-chart-label-default-placement.docx");
+    load(u"/chart2/qa/extras/data/docx/", 
u"line-chart-label-default-placement.docx");
 
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromWriter(0), 
uno::UNO_QUERY);
     CPPUNIT_ASSERT(xChartDoc.is());
@@ -1122,7 +1122,7 @@ void Chart2ExportTest::testDataLabelDefaultLineChartDOCX()
 
 void Chart2ExportTest::testIndividualDataLabelProps()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf122915.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf122915.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart","Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:plotArea/c:scatterChart/c:ser[3]/c:dLbls/c:dLbl/c:txPr/a:p/a:pPr/a:defRPr",
 "b", "1");
@@ -1133,7 +1133,7 @@ void Chart2ExportTest::testIndividualDataLabelProps()
 
 void Chart2ExportTest::testTdf108107()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf108107.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf108107.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:plotArea/c:lineChart/c:ser/c:dLbls/c:dLbl[1]/c:idx", 
"val", "1");
@@ -1143,7 +1143,7 @@ void Chart2ExportTest::testTdf108107()
 
 void Chart2ExportTest::testTdf114139()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf114139.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf114139.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1155,7 +1155,7 @@ void Chart2ExportTest::testTdf114139()
 
 void Chart2ExportTest::testTdf64224()
 {
-    load(u"/chart2/qa/extras/data/ods/", "tdf64224.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"tdf64224.ods");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1166,7 +1166,7 @@ void Chart2ExportTest::testTdf64224()
 
 void Chart2ExportTest::testChartTitlePropertiesColorFillDOCX()
 {
-    load(u"/chart2/qa/extras/data/docx/", 
"testChartTitlePropertiesColorFill.docx");
+    load(u"/chart2/qa/extras/data/docx/", 
u"testChartTitlePropertiesColorFill.docx");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart","Office Open XML 
Text");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:title/c:spPr/a:solidFill/a:srgbClr", "val", "ff0000");
@@ -1175,7 +1175,7 @@ void 
Chart2ExportTest::testChartTitlePropertiesColorFillDOCX()
 
 void Chart2ExportTest::testChartTitlePropertiesGradientFillDOCX()
 {
-    load(u"/chart2/qa/extras/data/docx/", 
"testChartTitlePropertiesGradientFill.docx");
+    load(u"/chart2/qa/extras/data/docx/", 
u"testChartTitlePropertiesGradientFill.docx");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart","Office Open XML 
Text");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:title/c:spPr/a:gradFill/a:gsLst/a:gs[1]/a:srgbClr", 
"val", "cccccc");
@@ -1185,7 +1185,7 @@ void 
Chart2ExportTest::testChartTitlePropertiesGradientFillDOCX()
 
 void Chart2ExportTest::testChartTitlePropertiesBitmapFillDOCX()
 {
-    load(u"/chart2/qa/extras/data/docx/", 
"testChartTitlePropertiesBitmapFill.docx");
+    load(u"/chart2/qa/extras/data/docx/", 
u"testChartTitlePropertiesBitmapFill.docx");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart","Office Open XML 
Text");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:title/c:spPr/a:blipFill/a:blip", "embed", "rId1");
@@ -1195,7 +1195,7 @@ void 
Chart2ExportTest::testChartTitlePropertiesBitmapFillDOCX()
 void Chart2ExportTest::testColorGradientWithTransparencyDOCX()
 {
     // Test color gradient (two color) with gradient transparency
-    load(u"/chart2/qa/extras/data/docx/", 
"testColorGradientWithTransparency.docx");
+    load(u"/chart2/qa/extras/data/docx/", 
u"testColorGradientWithTransparency.docx");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office Open 
XML Text");
     CPPUNIT_ASSERT(pXmlDoc);
     // Test the transparency of the first color
@@ -1207,7 +1207,7 @@ void 
Chart2ExportTest::testColorGradientWithTransparencyDOCX()
 void Chart2ExportTest::testColorGradientWithTransparencyODS()
 {
     // Test color gradient (two color) with simple transparency
-    load(u"/chart2/qa/extras/data/ods/", 
"testColorGradientWithTransparency.ods");
+    load(u"/chart2/qa/extras/data/ods/", 
u"testColorGradientWithTransparency.ods");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     // Test the transparency of the first color
@@ -1219,7 +1219,7 @@ void 
Chart2ExportTest::testColorGradientWithTransparencyODS()
 void Chart2ExportTest::testColorGradientStopXLSX()
 {
     // Test color gradient (two color) stop of the first color
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf128619.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf128619.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     // Test the position of the first color
@@ -1230,7 +1230,7 @@ void Chart2ExportTest::testColorGradientStopXLSX()
 
 void Chart2ExportTest::testRadialColorGradientDOCX()
 {
-    load(u"/chart2/qa/extras/data/docx/", "tdf128794.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"tdf128794.docx");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office Open 
XML Text");
     CPPUNIT_ASSERT(pXmlDoc);
     // Test the gradient style (if there is no 'a:path' attribute, it is a 
linear gradient)
@@ -1241,7 +1241,7 @@ void Chart2ExportTest::testRadialColorGradientDOCX()
 
 void Chart2ExportTest::testBarChartDataPointPropDOCX()
 {
-    load(u"/chart2/qa/extras/data/docx/", 
"testBarChartDataPointPropDOCX.docx");
+    load(u"/chart2/qa/extras/data/docx/", 
u"testBarChartDataPointPropDOCX.docx");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office Open 
XML Text");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1259,7 +1259,7 @@ void Chart2ExportTest::testBarChartDataPointPropDOCX()
 
 void Chart2ExportTest::testBarChartRotation()
 {
-    load (u"/chart2/qa/extras/data/docx/", "barChartRotation.docx");
+    load (u"/chart2/qa/extras/data/docx/", u"barChartRotation.docx");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart","Office Open XML 
Text");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1274,7 +1274,7 @@ void Chart2ExportTest::testShapeFollowedByChart()
        docPr Id is being repeated, ECMA 20.4.2.5 says that the
        docPr Id should be unique, ensuring the same here.
     */
-    load(u"/chart2/qa/extras/data/docx/", "FDO74430.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"FDO74430.docx");
     xmlDocUniquePtr pXmlDoc = parseExport("word/document", "Office Open XML 
Text" );
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1286,7 +1286,7 @@ void Chart2ExportTest::testShapeFollowedByChart()
 
 void Chart2ExportTest::testPieChartDataLabels()
 {
-    load(u"/chart2/qa/extras/data/docx/", "PieChartDataLabels.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"PieChartDataLabels.docx");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office Open 
XML Text");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:plotArea/c:pie3DChart/c:ser[1]/c:dLbls/c:dLbl[1]/c:dLblPos",
 "val", "outEnd");
@@ -1294,7 +1294,7 @@ void Chart2ExportTest::testPieChartDataLabels()
 
 void Chart2ExportTest::testSeriesIdxOrder()
 {
-    load(u"/chart2/qa/extras/data/docx/", "testSeriesIdxOrder.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"testSeriesIdxOrder.docx");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office Open 
XML Text");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace[1]/c:chart[1]/c:plotArea[1]/c:lineChart[1]/c:ser[1]/c:idx[1]", 
"val", "1");
@@ -1303,7 +1303,7 @@ void Chart2ExportTest::testSeriesIdxOrder()
 
 void Chart2ExportTest::testScatterPlotLabels()
 {
-    load(u"/chart2/qa/extras/data/odt/", "scatter-plot-labels.odt");
+    load(u"/chart2/qa/extras/data/odt/", u"scatter-plot-labels.odt");
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromWriter(0), 
uno::UNO_QUERY);
     CPPUNIT_ASSERT(xChartDoc.is());
 
@@ -1335,7 +1335,7 @@ void Chart2ExportTest::testScatterPlotLabels()
 
 void Chart2ExportTest::testErrorBarDataRangeODS()
 {
-    load(u"/chart2/qa/extras/data/ods/", "ErrorBarRange.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"ErrorBarRange.ods");
     reload("calc8");
 
     uno::Reference< chart2::XChartDocument > xChartDoc = getChartDocFromSheet( 
0, mxComponent );
@@ -1364,14 +1364,14 @@ void Chart2ExportTest::testErrorBarDataRangeODS()
 
 void Chart2ExportTest::testChartCrash()
 {
-    load(u"/chart2/qa/extras/data/docx/", "FDO75975.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"FDO75975.docx");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office Open 
XML Text");
     CPPUNIT_ASSERT(pXmlDoc);
 }
 
 void Chart2ExportTest::testPieChartRotation()
 {
-    load (u"/chart2/qa/extras/data/docx/", "pieChartRotation.docx");
+    load (u"/chart2/qa/extras/data/docx/", u"pieChartRotation.docx");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart","Office Open XML 
Text");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, "/c:chartSpace/c:chart/c:view3D/c:rotX", "val", "40");
@@ -1384,7 +1384,7 @@ void Chart2ExportTest::testEmbeddingsOleObjectGrabBag()
    // after saving file.
    // This test case tests whether embeddings files grabbagged properly in 
correct object.
 
-   load(u"/chart2/qa/extras/data/docx/", "testchartoleobjectembeddings.docx" );
+   load(u"/chart2/qa/extras/data/docx/", u"testchartoleobjectembeddings.docx" 
);
    uno::Reference<text::XTextDocument> xTextDocument(mxComponent, 
uno::UNO_QUERY);
    uno::Reference<beans::XPropertySet> xTextDocumentPropertySet(xTextDocument, 
uno::UNO_QUERY);
    uno::Sequence<beans::PropertyValue> aGrabBag(0);
@@ -1455,7 +1455,7 @@ void checkSheetForGapWidthAndOverlap(uno::Reference< 
chart2::XChartDocument > co
 
 void Chart2ExportTest::testGapWidthXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "gapWidth.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"gapWidth.xlsx");
 
     uno::Reference< chart2::XChartDocument > xChartDoc = getChartDocFromSheet( 
0, mxComponent );
     checkSheetForGapWidthAndOverlap(xChartDoc, 120, -60);
@@ -1474,7 +1474,7 @@ void Chart2ExportTest::testGapWidthXLSX()
 
 void Chart2ExportTest::testSmoothedLines()
 {
-    load(u"/chart2/qa/extras/data/ods/", "smoothedLines.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"smoothedLines.ods");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:plotArea/c:lineChart/c:ser[1]/c:smooth", "val", "0");
@@ -1482,7 +1482,7 @@ void Chart2ExportTest::testSmoothedLines()
 
 void Chart2ExportTest::testLabelStringODS()
 {
-    load(u"/chart2/qa/extras/data/ods/", "labelString.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"labelString.ods");
 
     uno::Reference< chart2::XChartDocument > xChartDoc = getChartDocFromSheet( 
0, mxComponent );
     Reference< chart2::data::XDataSequence > xLabelSeq =
@@ -1504,7 +1504,7 @@ void Chart2ExportTest::testLabelStringODS()
 
 void Chart2ExportTest::testFdo83058dlblPos()
 {
-    load (u"/chart2/qa/extras/data/docx/", "fdo83058_dlblPos.docx");
+    load (u"/chart2/qa/extras/data/docx/", u"fdo83058_dlblPos.docx");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart","Office Open XML 
Text");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:plotArea/c:barChart/c:ser[1]/c:dLbls[1]/c:dLbl[2]/c:dLblPos",
 "val", "outEnd");
@@ -1515,7 +1515,7 @@ void Chart2ExportTest::testFdo83058dlblPos()
 
 void Chart2ExportTest::testAutoTitleDelXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "autotitledel_2007.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"autotitledel_2007.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart","Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, "/c:chartSpace/c:chart/c:autoTitleDeleted", "val", 
"0");
@@ -1523,7 +1523,7 @@ void Chart2ExportTest::testAutoTitleDelXLSX()
 
 void Chart2ExportTest::testDispBlanksAsXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "dispBlanksAs_2007.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"dispBlanksAs_2007.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart","Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, "/c:chartSpace/c:chart/c:dispBlanksAs", "val", "gap");
@@ -1531,7 +1531,7 @@ void Chart2ExportTest::testDispBlanksAsXLSX()
 
 void Chart2ExportTest::testMarkerColorXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "markerColor.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"markerColor.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:plotArea/c:scatterChart/c:ser/c:marker/c:spPr/a:solidFill/a:srgbClr",
 "val", "92d050");
@@ -1539,7 +1539,7 @@ void Chart2ExportTest::testMarkerColorXLSX()
 
 void Chart2ExportTest::testRoundedCornersXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "markerColor.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"markerColor.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, "/c:chartSpace/c:roundedCorners", "val", "0");
@@ -1547,7 +1547,7 @@ void Chart2ExportTest::testRoundedCornersXLSX()
 
 void Chart2ExportTest::testAxisNumberFormatXLSX()
 {
-    load(u"/chart2/qa/extras/data/ods/", "axis_number_format.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"axis_number_format.ods");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, "/c:chartSpace/c:chart/c:plotArea/c:valAx", 2);
@@ -1560,7 +1560,7 @@ void Chart2ExportTest::testAxisNumberFormatXLSX()
 
 void Chart2ExportTest::testDataPointLabelNumberFormatXLSX()
 {
-    load(u"/chart2/qa/extras/data/ods/", "tdf123774.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"tdf123774.ods");
     {
         xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office 
Open XML");
         CPPUNIT_ASSERT(pXmlDoc);
@@ -1571,7 +1571,7 @@ void 
Chart2ExportTest::testDataPointLabelNumberFormatXLSX()
         assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:plotArea/c:pieChart/c:ser/c:dLbls/c:dLbl[1]/c:numFmt", 
"sourceLinked", "0");
     }
 
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf130986.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf130986.xlsx");
     {
         xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office 
Open XML");
         CPPUNIT_ASSERT(pXmlDoc);
@@ -1583,7 +1583,7 @@ void 
Chart2ExportTest::testDataPointLabelNumberFormatXLSX()
 
 void Chart2ExportTest::testDataLabelDefaultValuesXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "data_label.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"data_label.xlsx");
     Reference< chart2::XChartDocument> xDoc = getChartDocFromSheet(0, 
mxComponent);
     Reference<chart2::XDataSeries> xSeries = getDataSeriesFromDoc(xDoc, 0);
     Reference<beans::XPropertySet> xPropSet(xSeries, uno::UNO_QUERY_THROW);
@@ -1600,7 +1600,7 @@ void Chart2ExportTest::testDataLabelDefaultValuesXLSX()
 
 void Chart2ExportTest::testDataLabelFillColor()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "data_labels_fill_color.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"data_labels_fill_color.xlsx");
     Reference< chart2::XChartDocument> xDoc = getChartDocFromSheet(0, 
mxComponent);
     Reference<chart2::XDataSeries> xSeries = getDataSeriesFromDoc(xDoc, 0);
     Reference<beans::XPropertySet> xPropSet(xSeries, uno::UNO_QUERY_THROW);
@@ -1615,7 +1615,7 @@ void Chart2ExportTest::testDataLabelFillColor()
 
 void Chart2ExportTest::testTitleOverlayXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "chart_title.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"chart_title.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, "/c:chartSpace/c:chart/c:title/c:overlay", "val", 
"0");
@@ -1623,7 +1623,7 @@ void Chart2ExportTest::testTitleOverlayXLSX()
 
 void Chart2ExportTest::testInvertIfNegativeXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "bar_chart_simple.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"bar_chart_simple.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:plotArea/c:barChart/c:ser/c:invertIfNegative", "val", 
"0");
@@ -1631,7 +1631,7 @@ void Chart2ExportTest::testInvertIfNegativeXLSX()
 
 void Chart2ExportTest::testBubble3DXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "bubble_chart_simple.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"bubble_chart_simple.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:plotArea/c:bubbleChart/c:ser[1]/c:bubble3D", "val", 
"0");
@@ -1641,7 +1641,7 @@ void Chart2ExportTest::testBubble3DXLSX()
 
 void Chart2ExportTest::testNoMarkerXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "no_marker.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"no_marker.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:plotArea/c:lineChart/c:ser[1]/c:marker/c:symbol", 
"val", "none");
@@ -1651,7 +1651,7 @@ void Chart2ExportTest::testNoMarkerXLSX()
 
 void Chart2ExportTest::testTitleManualLayoutXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "title_manual_layout.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"title_manual_layout.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:title/c:layout/c:manualLayout/c:layoutTarget", 0);
@@ -1674,7 +1674,7 @@ void Chart2ExportTest::testTitleManualLayoutXLSX()
 
 void Chart2ExportTest::testPlotAreaManualLayoutXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "plot_area_manual_layout.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"plot_area_manual_layout.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1707,7 +1707,7 @@ void Chart2ExportTest::testPlotAreaManualLayoutXLSX()
 
 void Chart2ExportTest::testLegendManualLayoutXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "legend_manual_layout.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"legend_manual_layout.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1743,7 +1743,7 @@ void Chart2ExportTest::testLegendManualLayoutXLSX()
 
 void Chart2ExportTest::testChartSubTitle()
 {
-    load(u"/chart2/qa/extras/data/ods/", "testChartSubTitle.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"testChartSubTitle.ods");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     // test properties of subtitle
@@ -1757,7 +1757,7 @@ void Chart2ExportTest::testChartSubTitle()
 
 void Chart2ExportTest::testChartMainWithSubTitle()
 {
-    load(u"/chart2/qa/extras/data/ods/", "testChartMainWithSubTitle.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"testChartMainWithSubTitle.ods");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     // test properties of title
@@ -1772,7 +1772,7 @@ void Chart2ExportTest::testChartMainWithSubTitle()
 
 void Chart2ExportTest::testAutoTitleDeleted()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "testAutoTitleDeleted.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"testAutoTitleDeleted.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, "/c:chartSpace/c:chart/c:autoTitleDeleted", "val", 
"1");
@@ -1780,7 +1780,7 @@ void Chart2ExportTest::testAutoTitleDeleted()
 
 void Chart2ExportTest::testChartTitlePropertiesColorFillXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", 
"testChartTitlePropertiesColorFill.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", 
u"testChartTitlePropertiesColorFill.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:title/c:spPr/a:solidFill/a:srgbClr", "val", "ff0000");
@@ -1789,7 +1789,7 @@ void 
Chart2ExportTest::testChartTitlePropertiesColorFillXLSX()
 
 void Chart2ExportTest::testChartTitlePropertiesGradientFillXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", 
"testChartTitlePropertiesGradientFill.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", 
u"testChartTitlePropertiesGradientFill.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:title/c:spPr/a:gradFill/a:gsLst/a:gs[1]/a:srgbClr", 
"val", "cccccc");
@@ -1799,7 +1799,7 @@ void 
Chart2ExportTest::testChartTitlePropertiesGradientFillXLSX()
 
 void Chart2ExportTest::testChartTitlePropertiesBitmapFillXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", 
"testChartTitlePropertiesBitmapFill.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", 
u"testChartTitlePropertiesBitmapFill.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:title/c:spPr/a:blipFill/a:blip", "embed", "rId1");
@@ -1808,7 +1808,7 @@ void 
Chart2ExportTest::testChartTitlePropertiesBitmapFillXLSX()
 
 void Chart2ExportTest::testBarChartDataPointPropXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", 
"testBarChartDataPointPropXLSX.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", 
u"testBarChartDataPointPropXLSX.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1826,7 +1826,7 @@ void Chart2ExportTest::testBarChartDataPointPropXLSX()
 
 void Chart2ExportTest::testDataseriesOverlapStackedChartXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", 
"testDataseriesOverlapStackedChart.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", 
u"testDataseriesOverlapStackedChart.xlsx");
 
     // test the overlap value of a simple Stacked Column Chart
     uno::Reference< chart2::XChartDocument > xChartDoc = getChartDocFromSheet( 
0, mxComponent );
@@ -1847,7 +1847,7 @@ void 
Chart2ExportTest::testDataseriesOverlapStackedChartXLSX()
 
 void Chart2ExportTest::testAxisCharacterPropertiesXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "axis_character_properties.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"axis_character_properties.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1864,7 +1864,7 @@ void Chart2ExportTest::testAxisCharacterPropertiesXLSX()
 
 void Chart2ExportTest::testTitleCharacterPropertiesXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "title_character_properties.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"title_character_properties.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1877,7 +1877,7 @@ void Chart2ExportTest::testTitleCharacterPropertiesXLSX()
 
 void Chart2ExportTest::testPlotVisOnlyXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "hidden_cells.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"hidden_cells.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1886,7 +1886,7 @@ void Chart2ExportTest::testPlotVisOnlyXLSX()
 
 void Chart2ExportTest::testBarChartVaryColorsXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf90876.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf90876.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1895,7 +1895,7 @@ void Chart2ExportTest::testBarChartVaryColorsXLSX()
 
 void Chart2ExportTest::testTdf96161()
 {
-    load(u"/chart2/qa/extras/data/ods/", "tdf96161.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"tdf96161.ods");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1904,7 +1904,7 @@ void Chart2ExportTest::testTdf96161()
 
 void Chart2ExportTest::testTableOnPage3()
 {
-    load(u"/chart2/qa/extras/data/docx/", "TableOnPage3.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"TableOnPage3.docx");
     reload("Office Open XML Text");
 
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromWriter(0), 
uno::UNO_QUERY);
@@ -1920,7 +1920,7 @@ void Chart2ExportTest::testTableOnPage3()
 
 void Chart2ExportTest::testMultipleAxisXLSX()
 {
-    load(u"/chart2/qa/extras/data/ods/", "multiple_axis.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"multiple_axis.ods");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1935,7 +1935,7 @@ void Chart2ExportTest::testMultipleAxisXLSX()
 
 void Chart2ExportTest::testSecondaryAxisXLSX()
 {
-    load(u"/chart2/qa/extras/data/ods/", "secondary_axis.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"secondary_axis.ods");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1951,7 +1951,7 @@ void Chart2ExportTest::testSecondaryAxisXLSX()
 
 void Chart2ExportTest::testBarChartSecondaryAxisXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "testSecondaryAxis.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"testSecondaryAxis.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     // Collect barchart axID on primary Axis
diff --git a/chart2/qa/extras/chart2export2.cxx 
b/chart2/qa/extras/chart2export2.cxx
index 1fa862291459..be2902cbb15c 100644
--- a/chart2/qa/extras/chart2export2.cxx
+++ b/chart2/qa/extras/chart2export2.cxx
@@ -168,7 +168,7 @@ void 
Chart2ExportTest2::registerNamespaces(xmlXPathContextPtr& pXmlXPathCtx)
 
 void Chart2ExportTest2::testSetSeriesToSecondaryAxisXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "add_series_secondary_axis.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"add_series_secondary_axis.xlsx");
     Reference<chart2::XChartDocument> xChartDoc = getChartDocFromSheet(0, 
mxComponent);
     // Second series
     Reference<chart2::XDataSeries> xSeries = getDataSeriesFromDoc(xChartDoc, 
1);
@@ -188,7 +188,7 @@ void Chart2ExportTest2::testSetSeriesToSecondaryAxisXLSX()
 void Chart2ExportTest2::testCombinedChartSecondaryAxisXLSX()
 {
     // Original file was created with MS Office
-    load(u"/chart2/qa/extras/data/xlsx/", 
"combined_chart_secondary_axis.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", 
u"combined_chart_secondary_axis.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     // Collect barchart axID on secondary Axis
@@ -215,7 +215,7 @@ void Chart2ExportTest2::testCombinedChartSecondaryAxisXLSX()
 void Chart2ExportTest2::testCombinedChartSecondaryAxisODS()
 {
     // Original file was created with LibreOffice
-    load(u"/chart2/qa/extras/data/ods/", "combined_chart_secondary_axis.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"combined_chart_secondary_axis.ods");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     // Collect barchart axID on secondary Axis
@@ -245,14 +245,14 @@ void Chart2ExportTest2::testCrossBetweenXLSX()
 {
     // Original files were created with MS Office
     {
-        load(u"/chart2/qa/extras/data/xlsx/", "tdf127777.xlsx");
+        load(u"/chart2/qa/extras/data/xlsx/", u"tdf127777.xlsx");
         xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office 
Open XML");
         CPPUNIT_ASSERT(pXmlDoc);
         assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:plotArea/c:valAx/c:crossBetween", "val",
                     "between");
     }
     {
-        load(u"/chart2/qa/extras/data/xlsx/", "tdf132076.xlsx");
+        load(u"/chart2/qa/extras/data/xlsx/", u"tdf132076.xlsx");
         xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office 
Open XML");
         CPPUNIT_ASSERT(pXmlDoc);
         assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:plotArea/c:valAx/c:crossBetween", "val",
@@ -263,7 +263,7 @@ void Chart2ExportTest2::testCrossBetweenXLSX()
 void Chart2ExportTest2::testCrossBetweenWithDeletedAxis()
 {
     // Original file was created with MS Office (the category axis is deleted 
in the file)
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf128633.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf128633.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:plotArea/c:valAx/c:crossBetween", "val",
@@ -273,7 +273,7 @@ void Chart2ExportTest2::testCrossBetweenWithDeletedAxis()
 void Chart2ExportTest2::testCrossBetweenODS()
 {
     // Original file was created with LibreOffice
-    load(u"/chart2/qa/extras/data/ods/", "test_CrossBetween.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"test_CrossBetween.ods");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:plotArea/c:valAx/c:crossBetween", "val",
@@ -282,7 +282,7 @@ void Chart2ExportTest2::testCrossBetweenODS()
 
 void Chart2ExportTest2::testAxisTitleRotationXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "axis_title_rotation.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"axis_title_rotation.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -292,7 +292,7 @@ void Chart2ExportTest2::testAxisTitleRotationXLSX()
 
 void Chart2ExportTest2::testAxisTitlePositionDOCX()
 {
-    load(u"/chart2/qa/extras/data/docx/", "testAxisTitlePosition.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"testAxisTitlePosition.docx");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office Open 
XML Text");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -324,14 +324,14 @@ void Chart2ExportTest2::testAxisTitlePositionDOCX()
 
 void Chart2ExportTest2::testAxisCrossBetweenDOCX()
 {
-    load(u"/chart2/qa/extras/data/odt/", "axis-position.odt");
+    load(u"/chart2/qa/extras/data/odt/", u"axis-position.odt");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office Open 
XML Text");
     assertXPath(pXmlDoc, "(//c:crossBetween)[1]", "val", "midCat");
 }
 
 void Chart2ExportTest2::testPieChartDataPointExplosionXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", 
"pie_chart_datapoint_explosion.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", 
u"pie_chart_datapoint_explosion.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -341,7 +341,7 @@ void Chart2ExportTest2::testPieChartDataPointExplosionXLSX()
 
 void Chart2ExportTest2::testCustomDataLabel()
 {
-    load(u"/chart2/qa/extras/data/pptx/", "tdf115107.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", u"tdf115107.pptx");
     xmlDocUniquePtr pXmlDoc = parseExport("ppt/charts/chart1", "Impress MS 
PowerPoint 2007 XML");
     CPPUNIT_ASSERT(pXmlDoc);
     // Check the data labels font color for the complete data series
@@ -463,7 +463,7 @@ void Chart2ExportTest2::testDataSeriesName()
 {
     // ODF
     {
-        load(u"/chart2/qa/extras/data/ods/", "ser_labels.ods");
+        load(u"/chart2/qa/extras/data/ods/", u"ser_labels.ods");
         reload("calc8");
         uno::Reference<chart2::XChartDocument> xChartDoc = 
getChartDocFromSheet(0, mxComponent);
         uno::Reference<chart2::XDataSeries> 
xDataSeries(getDataSeriesFromDoc(xChartDoc, 0));
@@ -477,7 +477,7 @@ void Chart2ExportTest2::testDataSeriesName()
 
     // OOXML
     {
-        load(u"/chart2/qa/extras/data/xlsx/", "ser_labels.xlsx");
+        load(u"/chart2/qa/extras/data/xlsx/", u"ser_labels.xlsx");
         reload("Calc Office Open XML");
         uno::Reference<chart2::XChartDocument> xChartDoc = 
getChartDocFromSheet(0, mxComponent);
         uno::Reference<chart2::XDataSeries> 
xDataSeries(getDataSeriesFromDoc(xChartDoc, 0));
@@ -492,7 +492,7 @@ void Chart2ExportTest2::testDataSeriesName()
 
 void Chart2ExportTest2::testCustomPositionofDataLabel()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "testCustomPosDataLabels.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"testCustomPosDataLabels.xlsx");
     {
         xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office 
Open XML");
         CPPUNIT_ASSERT(pXmlDoc);
@@ -516,7 +516,7 @@ void Chart2ExportTest2::testCustomPositionofDataLabel()
         CPPUNIT_ASSERT_DOUBLES_EQUAL(-0.0742140311063737, nY, 1e-7);
     }
 
-    load(u"/chart2/qa/extras/data/docx/", "testTdf108110.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"testTdf108110.docx");
     {
         xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office 
Open XML Text");
         CPPUNIT_ASSERT(pXmlDoc);
@@ -540,7 +540,7 @@ void Chart2ExportTest2::testCustomPositionofDataLabel()
         CPPUNIT_ASSERT_DOUBLES_EQUAL(0.172648731408574, nY, 1e-7);
     }
 
-    load(u"/chart2/qa/extras/data/ods/", "tdf136024.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"tdf136024.ods");
     {
         reload("calc8");
         // tdf#136024: test custom position of pie chart data label after an 
ods export
@@ -562,7 +562,7 @@ void Chart2ExportTest2::testCustomPositionofDataLabel()
 
 void Chart2ExportTest2::testCustomDataLabelMultipleSeries()
 {
-    load(u"/chart2/qa/extras/data/pptx/", "tdf115107-2.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", u"tdf115107-2.pptx");
     xmlDocUniquePtr pXmlDoc = parseExport("ppt/charts/chart2", "Impress MS 
PowerPoint 2007 XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -626,7 +626,7 @@ void Chart2ExportTest2::testCustomDataLabelMultipleSeries()
 
 void Chart2ExportTest2::testLeaderLines()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "testTdf90749.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"testTdf90749.xlsx");
     {
         xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office 
Open XML");
         CPPUNIT_ASSERT(pXmlDoc);
@@ -639,7 +639,7 @@ void Chart2ExportTest2::testLeaderLines()
                     "c15:showLeaderLines",
                     "val", "0");
     }
-    load(u"/chart2/qa/extras/data/docx/", "MSO_Custom_Leader_Line.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"MSO_Custom_Leader_Line.docx");
     {
         xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart1", "Office 
Open XML Text");
         CPPUNIT_ASSERT(pXmlDoc);
@@ -653,7 +653,7 @@ void Chart2ExportTest2::testLeaderLines()
 
 void Chart2ExportTest2::testNumberFormatExportPPTX()
 {
-    load(u"/chart2/qa/extras/data/pptx/", "tdf115859.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", u"tdf115859.pptx");
     xmlDocUniquePtr pXmlDoc = parseExport("ppt/charts/chart", "Impress MS 
PowerPoint 2007 XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -665,7 +665,7 @@ void Chart2ExportTest2::testNumberFormatExportPPTX()
 
 void Chart2ExportTest2::testLabelSeparatorExportDOCX()
 {
-    load(u"/chart2/qa/extras/data/docx/", "testLabelSeparator.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"testLabelSeparator.docx");
 
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromWriter(0), 
uno::UNO_QUERY);
     CPPUNIT_ASSERT(xChartDoc.is());
@@ -686,7 +686,7 @@ void Chart2ExportTest2::testLabelSeparatorExportDOCX()
 
 void Chart2ExportTest2::testChartTitlePropertiesColorFillPPTX()
 {
-    load(u"/chart2/qa/extras/data/pptx/", 
"testChartTitlePropertiesColorFill.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", 
u"testChartTitlePropertiesColorFill.pptx");
     xmlDocUniquePtr pXmlDoc = parseExport("ppt/charts/chart", "Impress MS 
PowerPoint 2007 XML");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:title/c:spPr/a:solidFill/a:srgbClr", "val",
@@ -696,7 +696,7 @@ void 
Chart2ExportTest2::testChartTitlePropertiesColorFillPPTX()
 
 void Chart2ExportTest2::testChartTitlePropertiesGradientFillPPTX()
 {
-    load(u"/chart2/qa/extras/data/pptx/", 
"testChartTitlePropertiesGradientFill.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", 
u"testChartTitlePropertiesGradientFill.pptx");
     xmlDocUniquePtr pXmlDoc = parseExport("ppt/charts/chart", "Impress MS 
PowerPoint 2007 XML");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc,
@@ -710,7 +710,7 @@ void 
Chart2ExportTest2::testChartTitlePropertiesGradientFillPPTX()
 
 void Chart2ExportTest2::testChartTitlePropertiesBitmapFillPPTX()
 {
-    load(u"/chart2/qa/extras/data/pptx/", 
"testChartTitlePropertiesBitmapFill.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", 
u"testChartTitlePropertiesBitmapFill.pptx");
     xmlDocUniquePtr pXmlDoc = parseExport("ppt/charts/chart", "Impress MS 
PowerPoint 2007 XML");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:title/c:spPr/a:blipFill/a:blip", "embed", "rId1");
@@ -719,7 +719,7 @@ void 
Chart2ExportTest2::testChartTitlePropertiesBitmapFillPPTX()
 
 void Chart2ExportTest2::testxAxisLabelsRotation()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "xAxisLabelsRotation.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"xAxisLabelsRotation.xlsx");
     xmlDocUniquePtr pXmlDoc1 = parseExport("xl/charts/chart", "Calc Office 
Open XML");
     CPPUNIT_ASSERT(pXmlDoc1);
 
@@ -730,7 +730,7 @@ void Chart2ExportTest2::testxAxisLabelsRotation()
 
 void Chart2ExportTest2::testMultipleCategoryAxisLablesXLSX()
 {
-    load(u"/chart2/qa/extras/data/ods/", "multilevelcat.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"multilevelcat.ods");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     // check category axis labels number of first level
@@ -762,7 +762,7 @@ void Chart2ExportTest2::testMultipleCategoryAxisLablesXLSX()
 
 void Chart2ExportTest2::testMultipleCategoryAxisLablesDOCX()
 {
-    load(u"/chart2/qa/extras/data/odt/", "multilevelcat.odt");
+    load(u"/chart2/qa/extras/data/odt/", u"multilevelcat.odt");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office Open 
XML Text");
     CPPUNIT_ASSERT(pXmlDoc);
     // check category axis labels number of first level
@@ -794,7 +794,7 @@ void Chart2ExportTest2::testMultipleCategoryAxisLablesDOCX()
 
 void Chart2ExportTest2::testTdf116163()
 {
-    load(u"/chart2/qa/extras/data/pptx/", "tdf116163.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", u"tdf116163.pptx");
     xmlDocUniquePtr pXmlDoc = parseExport("ppt/charts/chart", "Impress MS 
PowerPoint 2007 XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -804,7 +804,7 @@ void Chart2ExportTest2::testTdf116163()
 
 void Chart2ExportTest2::testTdf111824()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf111824.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf111824.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -818,7 +818,7 @@ void Chart2ExportTest2::testTdf111824()
 
 void Chart2ExportTest2::test3DAreaChartZAxis()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "test3DAreaChartZAxis.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"test3DAreaChartZAxis.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -832,7 +832,7 @@ void Chart2ExportTest2::test3DAreaChartZAxis()
 
 void Chart2ExportTest2::testTdf119029()
 {
-    load(u"/chart2/qa/extras/data/odp/", "tdf119029.odp");
+    load(u"/chart2/qa/extras/data/odp/", u"tdf119029.odp");
     // Only use "chart", without number, because the number depends on the 
previous tests
     xmlDocUniquePtr pXmlDoc = parseExport("ppt/charts/chart", "Impress MS 
PowerPoint 2007 XML");
     CPPUNIT_ASSERT(pXmlDoc);
@@ -844,7 +844,7 @@ void Chart2ExportTest2::testTdf119029()
 
 void Chart2ExportTest2::testTdf108022()
 {
-    load(u"/chart2/qa/extras/data/odt/", "tdf108022.odt");
+    load(u"/chart2/qa/extras/data/odt/", u"tdf108022.odt");
     reload("Office Open XML Text");
 
     // assert we really have two charts
@@ -856,7 +856,7 @@ void Chart2ExportTest2::testTdf108022()
 
 void Chart2ExportTest2::testTdf121744()
 {
-    load(u"/chart2/qa/extras/data/docx/", "tdf121744.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"tdf121744.docx");
     xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart", "Office Open 
XML Text");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -871,7 +871,7 @@ void Chart2ExportTest2::testTdf121744()
 
 void Chart2ExportTest2::testTdf121189()
 {
-    load(u"/chart2/qa/extras/data/odp/", "tdf121189.odp");
+    load(u"/chart2/qa/extras/data/odp/", u"tdf121189.odp");
     reload("Impress Office Open XML");
 
     uno::Reference<drawing::XDrawPagesSupplier> xDoc(mxComponent, 
uno::UNO_QUERY_THROW);
@@ -886,7 +886,7 @@ void Chart2ExportTest2::testTdf122031()
 {
     //Checks pie chart data label format.
 
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf122031.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf122031.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -905,7 +905,7 @@ void Chart2ExportTest2::testTdf122031()
 
 void Chart2ExportTest2::testTdf115012()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf115012.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf115012.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     // workaround: use-zero instead of leave-gap to show the original line 
chart
@@ -914,7 +914,7 @@ void Chart2ExportTest2::testTdf115012()
 
 void Chart2ExportTest2::testTdf134118()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf134118.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf134118.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     // workaround: use leave-gap instead of zero to show the original line 
chart
@@ -923,7 +923,7 @@ void Chart2ExportTest2::testTdf134118()
 
 void Chart2ExportTest2::testTdf123206_customLabelText()
 {
-    load(u"/chart2/qa/extras/data/docx/", "tdf123206.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"tdf123206.docx");
 
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromWriter(0), 
uno::UNO_QUERY);
     CPPUNIT_ASSERT(xChartDoc.is());
@@ -939,7 +939,7 @@ void Chart2ExportTest2::testTdf123206_customLabelText()
 
 void Chart2ExportTest2::testCustomLabelText()
 {
-    load(u"/chart2/qa/extras/data/docx/", "testCustomlabeltext.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"testCustomlabeltext.docx");
 
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromWriter(0), 
uno::UNO_QUERY);
     CPPUNIT_ASSERT(xChartDoc.is());
@@ -974,7 +974,7 @@ void Chart2ExportTest2::testCustomLabelText()
 
 void Chart2ExportTest2::testDeletedLegendEntries()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "deleted_legend_entry.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"deleted_legend_entry.xlsx");
     {
         reload("Calc Office Open XML");
         Reference<chart2::XChartDocument> xChartDoc = getChartDocFromSheet(0, 
mxComponent);
@@ -987,7 +987,7 @@ void Chart2ExportTest2::testDeletedLegendEntries()
         CPPUNIT_ASSERT(!bShowLegendEntry);
     }
 
-    load(u"/chart2/qa/extras/data/xlsx/", "deleted_legend_entry2.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"deleted_legend_entry2.xlsx");
     {
         reload("Calc Office Open XML");
         Reference<chart2::XChartDocument> xChartDoc = getChartDocFromSheet(0, 
mxComponent);
@@ -1013,7 +1013,7 @@ void Chart2ExportTest2::testDeletedLegendEntries()
 
 void Chart2ExportTest2::testTdf60316()
 {
-    load(u"/chart2/qa/extras/data/pptx/", "tdf60316.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", u"tdf60316.pptx");
     xmlDocUniquePtr pXmlDoc = parseExport("ppt/charts/chart", "Impress MS 
PowerPoint 2007 XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1024,7 +1024,7 @@ void Chart2ExportTest2::testTdf60316()
 
 void Chart2ExportTest2::testTdf130225()
 {
-    load(u"/chart2/qa/extras/data/docx/", 
"piechart_deleted_legend_entry.docx");
+    load(u"/chart2/qa/extras/data/docx/", 
u"piechart_deleted_legend_entry.docx");
     reload("Office Open XML Text");
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromWriter(0), 
uno::UNO_QUERY);
     CPPUNIT_ASSERT(xChartDoc.is());
@@ -1039,7 +1039,7 @@ void Chart2ExportTest2::testTdf130225()
 
 void Chart2ExportTest2::testTdf59857()
 {
-    load(u"/chart2/qa/extras/data/ods/", "tdf59857.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"tdf59857.ods");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1053,7 +1053,7 @@ void Chart2ExportTest2::testTdf59857()
 
 void Chart2ExportTest2::testTdf126076()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "auto_marker_excel10.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"auto_marker_excel10.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1067,7 +1067,7 @@ void Chart2ExportTest2::testTdf126076()
 
 void Chart2ExportTest2::testTdf75330()
 {
-    load(u"/chart2/qa/extras/data/ods/", "legend_overlay.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"legend_overlay.ods");
     reload("calc8");
     {
         uno::Reference<chart2::XChartDocument> xChart2Doc = 
getChartDocFromSheet(0, mxComponent);
@@ -1092,7 +1092,7 @@ void Chart2ExportTest2::testTdf75330()
 
 void Chart2ExportTest2::testTdf127792()
 {
-    load(u"/chart2/qa/extras/data/docx/", "MSO_axis_position.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"MSO_axis_position.docx");
     {
         xmlDocUniquePtr pXmlDoc = parseExport("word/charts/chart1", "Office 
Open XML Text");
         CPPUNIT_ASSERT(pXmlDoc);
@@ -1109,7 +1109,7 @@ void Chart2ExportTest2::testTdf127792()
 
 void Chart2ExportTest2::testTdf131979()
 {
-    load(u"/chart2/qa/extras/data/ods/", "tdf131115.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"tdf131115.ods");
     {
         reload("calc8");
         Reference<chart2::XChartDocument> xChartDoc = getChartDocFromSheet(0, 
mxComponent);
@@ -1125,7 +1125,7 @@ void Chart2ExportTest2::testTdf131979()
                                !blinknumberformattosource);
     }
 
-    load(u"/chart2/qa/extras/data/ods/", "tdf131979.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"tdf131979.ods");
     {
         reload("calc8");
         Reference<chart2::XChartDocument> xChartDoc = getChartDocFromSheet(0, 
mxComponent);
@@ -1145,7 +1145,7 @@ void Chart2ExportTest2::testTdf131979()
 void Chart2ExportTest2::testTdf132076()
 {
     {
-        load(u"/chart2/qa/extras/data/ods/", "tdf132076.ods");
+        load(u"/chart2/qa/extras/data/ods/", u"tdf132076.ods");
         xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office 
Open XML");
         CPPUNIT_ASSERT(pXmlDoc);
         assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:plotArea/c:catAx/c:numFmt", "formatCode",
@@ -1154,7 +1154,7 @@ void Chart2ExportTest2::testTdf132076()
                     "0");
     }
     {
-        load(u"/chart2/qa/extras/data/xlsx/", "tdf132076.xlsx");
+        load(u"/chart2/qa/extras/data/xlsx/", u"tdf132076.xlsx");
         xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office 
Open XML");
         CPPUNIT_ASSERT(pXmlDoc);
         assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:plotArea/c:dateAx/c:numFmt", "formatCode",
@@ -1166,7 +1166,7 @@ void Chart2ExportTest2::testTdf132076()
 
 void Chart2ExportTest2::testTdf125812()
 {
-    load(u"/chart2/qa/extras/data/odp/", "ellipticalGradientFill.odp");
+    load(u"/chart2/qa/extras/data/odp/", u"ellipticalGradientFill.odp");
     xmlDocUniquePtr pXmlDoc = parseExport("ppt/charts/chart", "Impress MS 
PowerPoint 2007 XML");
     CPPUNIT_ASSERT(pXmlDoc);
     assertXPath(pXmlDoc, 
"/c:chartSpace/c:chart/c:plotArea/c:spPr/a:gradFill/a:path", "path",
@@ -1183,7 +1183,7 @@ void Chart2ExportTest2::testTdf125812()
 
 void Chart2ExportTest2::testTdf133190()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf133190_tdf133191.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf133190_tdf133191.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1200,7 +1200,7 @@ void Chart2ExportTest2::testTdf133190()
 
 void Chart2ExportTest2::testTdf133191()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf133190_tdf133191.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf133190_tdf133191.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1213,7 +1213,7 @@ void Chart2ExportTest2::testTdf133191()
 
 void Chart2ExportTest2::testTdf132594()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "chart_pie2007.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"chart_pie2007.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1222,7 +1222,7 @@ void Chart2ExportTest2::testTdf132594()
 
 void Chart2ExportTest2::testTdf134255()
 {
-    load(u"/chart2/qa/extras/data/docx/", "tdf134255.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"tdf134255.docx");
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromWriter(0), 
uno::UNO_QUERY);
     CPPUNIT_ASSERT(xChartDoc.is());
 
@@ -1245,7 +1245,7 @@ void Chart2ExportTest2::testTdf134255()
 
 void Chart2ExportTest2::testTdf134977()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "custom_data_label.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"custom_data_label.xlsx");
 
     //import test
     uno::Reference<chart2::XChartDocument> xChartDoc = getChartDocFromSheet(0, 
mxComponent);
@@ -1271,7 +1271,7 @@ void Chart2ExportTest2::testTdf134977()
 
 void Chart2ExportTest2::testTdf123647()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "empty_chart.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"empty_chart.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1280,7 +1280,7 @@ void Chart2ExportTest2::testTdf123647()
 
 void Chart2ExportTest2::testTdf136267()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf136267.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf136267.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1292,7 +1292,7 @@ void Chart2ExportTest2::testTdf136267()
 
 void Chart2ExportTest2::testDataLabelPlacementPieChart()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf134978.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf134978.xlsx");
     reload("calc8");
     uno::Reference<chart::XChartDocument> xChartDoc(getChartCompFromSheet(0, 
mxComponent),
                                                     UNO_QUERY_THROW);
@@ -1308,7 +1308,7 @@ void Chart2ExportTest2::testDataLabelPlacementPieChart()
 
 void Chart2ExportTest2::testTdf137917()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf137917.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf137917.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1323,7 +1323,7 @@ void Chart2ExportTest2::testTdf137917()
 
 void Chart2ExportTest2::testTdf138204()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf138204.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf138204.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1391,7 +1391,7 @@ void Chart2ExportTest2::testTdf138204()
 
 void Chart2ExportTest2::testTdf138181()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "piechart_deleted_legendentry.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", 
u"piechart_deleted_legendentry.xlsx");
     Reference<chart::XChartDocument> xChartDoc(getChartDocFromSheet(0, 
mxComponent),
                                                UNO_QUERY_THROW);
     Reference<drawing::XDrawPageSupplier> xDrawPageSupplier(xChartDoc, 
UNO_QUERY_THROW);
@@ -1417,7 +1417,7 @@ void Chart2ExportTest2::testTdf138181()
 
 void Chart2ExportTest2::testCustomShapeText()
 {
-    load(u"/chart2/qa/extras/data/ods/", "tdf72776.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"tdf72776.ods");
     reload("calc8");
     Reference<chart::XChartDocument> xChartDoc(getChartDocFromSheet(0, 
mxComponent),
                                                UNO_QUERY_THROW);
@@ -1433,7 +1433,7 @@ void Chart2ExportTest2::testCustomShapeText()
 
 void Chart2ExportTest2::testuserShapesXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf128621.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf128621.xlsx");
     reload("Calc Office Open XML");
 
     Reference<chart2::XChartDocument> xChartDoc = getChartDocFromSheet(0, 
mxComponent);
@@ -1461,7 +1461,7 @@ void Chart2ExportTest2::testuserShapesXLSX()
 
 void Chart2ExportTest2::testuserShapesDOCX()
 {
-    load(u"/chart2/qa/extras/data/docx/", "tdf143130.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"tdf143130.docx");
     reload("Office Open XML Text");
 
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromWriter(0), 
uno::UNO_QUERY);
@@ -1489,7 +1489,7 @@ void Chart2ExportTest2::testuserShapesDOCX()
 
 void Chart2ExportTest2::testGraphicBlipXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf143127.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf143127.xlsx");
     reload("Calc Office Open XML");
 
     Reference<chart2::XChartDocument> xChartDoc = getChartDocFromSheet(0, 
mxComponent);
@@ -1517,7 +1517,7 @@ void Chart2ExportTest2::testGraphicBlipXLSX()
 
 void Chart2ExportTest2::testNameRangeXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "chart_with_name_range.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"chart_with_name_range.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
     // test the syntax of local range name on the local sheet.
@@ -1532,7 +1532,7 @@ void Chart2ExportTest2::testNameRangeXLSX()
 
 void Chart2ExportTest2::testTdf143942()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf143942.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf143942.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -1595,7 +1595,7 @@ void Chart2ExportTest2::testTdf143942()
 
 void Chart2ExportTest2::testDateCategoriesPPTX()
 {
-    load(u"/chart2/qa/extras/data/pptx/", "bnc889755.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", u"bnc889755.pptx");
     xmlDocUniquePtr pXmlDoc = parseExport("ppt/charts/chart", "Impress Office 
Open XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
diff --git a/chart2/qa/extras/chart2geometry.cxx 
b/chart2/qa/extras/chart2geometry.cxx
index f460ac467621..a6fd4a8b3620 100644
--- a/chart2/qa/extras/chart2geometry.cxx
+++ b/chart2/qa/extras/chart2geometry.cxx
@@ -84,7 +84,7 @@ static OString OU2O(std::u16string_view sOUSource)
 void Chart2GeometryTest::testTdf135184RoundLineCap()
 {
     // It tests chart area, data series line and regression-curve line.
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf135184RoundLineCap.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf135184RoundLineCap.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("Object 1/content.xml", "calc8");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -111,7 +111,7 @@ void Chart2GeometryTest::testTdf135184RoundLineCap()
 void Chart2GeometryTest::testTdf135184RoundLineCap2()
 {
     // It tests legend, data series sector and title.
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf135184RoundLineCap2.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf135184RoundLineCap2.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("Object 1/content.xml", "calc8");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -140,7 +140,7 @@ void Chart2GeometryTest::testTdf135184RoundLineCap2()
 void Chart2GeometryTest::testTdf135184RoundLineCap3()
 {
     // It tests chart area, data series line and regression-curve line.
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf135184RoundLineCap.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf135184RoundLineCap.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -157,7 +157,7 @@ void Chart2GeometryTest::testTdf135184RoundLineCap3()
 void Chart2GeometryTest::testTdf135184RoundLineCap4()
 {
     // It tests legend, data series sector and title.
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf135184RoundLineCap2.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf135184RoundLineCap2.xlsx");
     xmlDocUniquePtr pXmlDoc = parseExport("xl/charts/chart", "Calc Office Open 
XML");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -173,7 +173,7 @@ void 
Chart2GeometryTest::testTdf128345ChartArea_CG_TS_export()
 {
     // chart area with color gradient and solid transparency
     // Without the patch the transparency was lost in saved pptx file.
-    load(u"/chart2/qa/extras/data/odp/", "tdf128345_ChartArea_CG_TS.odp");
+    load(u"/chart2/qa/extras/data/odp/", u"tdf128345_ChartArea_CG_TS.odp");
 
     // Make sure the chart area has a transparency in gradient stops in saved 
pptx file.
     xmlDocUniquePtr pXmlDoc = parseExport("ppt/charts/chart", "Impress MS 
PowerPoint 2007 XML");
@@ -192,7 +192,7 @@ void 
Chart2GeometryTest::testTdf128345ChartArea_CG_TS_import()
     // Make sure chart area has transparency when pptx document is opened and 
resaved as odp.
     // As of Aug 2020, the import generates a transparency gradient. When 
import is changed to
     // generate solid transparency, the test needs to be adapted.
-    load(u"/chart2/qa/extras/data/pptx/", "tdf128345_ChartArea_CG_TS.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", u"tdf128345_ChartArea_CG_TS.pptx");
 
     // Find transparency gradient name
     xmlDocUniquePtr pXmlDoc = parseExport("Object 1/content.xml", "impress8");
@@ -225,7 +225,7 @@ void 
Chart2GeometryTest::testTdf128345ChartWall_CS_TG_export()
 {
     // chart wall with solid color and transparency gradient
     // Without the patch the transparency was lost.
-    load(u"/chart2/qa/extras/data/odp/", "tdf128345_ChartWall_CS_TG.odp");
+    load(u"/chart2/qa/extras/data/odp/", u"tdf128345_ChartWall_CS_TG.odp");
 
     // Make sure the chart has a gradient with transparency in gradient stops 
in saved pptx file.
     xmlDocUniquePtr pXmlDoc = parseExport("ppt/charts/chart", "Impress MS 
PowerPoint 2007 XML");
@@ -243,7 +243,7 @@ void 
Chart2GeometryTest::testTdf128345ChartWall_CS_TG_import()
 {
     // This works on the file, which was exported from file 
tdf128345_ChartWall_CS_TG.odp to pptx.
     // Make sure chart wall has transparency when pptx document is resaved as 
odp.
-    load(u"/chart2/qa/extras/data/pptx/", "tdf128345_ChartWall_CS_TG.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", u"tdf128345_ChartWall_CS_TG.pptx");
 
     // Find transparency gradient name
     xmlDocUniquePtr pXmlDoc = parseExport("Object 1/content.xml", "impress8");
@@ -274,7 +274,7 @@ void 
Chart2GeometryTest::testTdf128345Legend_CS_TG_axial_export()
 {
     // legend with solid color and transparency gradient
     // Without the patch the transparency was lost.
-    load(u"/chart2/qa/extras/data/odp/", "tdf128345_Legend_CS_TG_axial.odp");
+    load(u"/chart2/qa/extras/data/odp/", u"tdf128345_Legend_CS_TG_axial.odp");
 
     // Make sure the chart has a gradient with transparency in gradient stops 
in saved pptx file.
     xmlDocUniquePtr pXmlDoc = parseExport("ppt/charts/chart", "Impress MS 
PowerPoint 2007 XML");
@@ -294,7 +294,7 @@ void 
Chart2GeometryTest::testTdf128345Legend_CS_TG_axial_import()
 {
     // This works on the file, which was exported from file 
tdf128345_Legend_CS_TG_axial.odp to pptx.
     // Error was, that in case of axial not the middle value was taken but 
start and end value.
-    load(u"/chart2/qa/extras/data/pptx/", "tdf128345_Legend_CS_TG_axial.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", 
u"tdf128345_Legend_CS_TG_axial.pptx");
 
     // Find transparency gradient name
     xmlDocUniquePtr pXmlDoc = parseExport("Object 1/content.xml", "impress8");
@@ -325,7 +325,7 @@ void Chart2GeometryTest::testTdf135366LabelOnSeries()
 {
     // Error was, that the fill and line properties of a <chart:data-label> 
were not
     // imported at all. Here they should be at the series.
-    load(u"/chart2/qa/extras/data/ods/", "tdf135366_data_label_series.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"tdf135366_data_label_series.ods");
     uno::Reference<chart2::XChartDocument> xChartDoc = getChartDocFromSheet(0, 
mxComponent);
     CPPUNIT_ASSERT(xChartDoc.is());
     Reference<chart2::XDataSeries> xDataSeries = 
getDataSeriesFromDoc(xChartDoc, 0);
@@ -363,7 +363,7 @@ void Chart2GeometryTest::testTdf135366LabelOnPoint()
 {
     // Error was, that the fill and line properties of a <chart:data-label> 
were not
     // imported at all. Here they should be at point 2.
-    load(u"/chart2/qa/extras/data/odt/", "tdf135366_data_label_point.odt");
+    load(u"/chart2/qa/extras/data/odt/", u"tdf135366_data_label_point.odt");
     uno::Reference<chart2::XChartDocument> xChartDoc(getChartDocFromWriter(0), 
uno::UNO_QUERY);
     CPPUNIT_ASSERT(xChartDoc.is());
     Reference<chart2::XDataSeries> xDataSeries = 
getDataSeriesFromDoc(xChartDoc, 0);
@@ -410,7 +410,7 @@ void Chart2GeometryTest::testTdf135366LabelExport()
     // Error was, that line and fill properties were not exported as
     // graphic-properties of a <chart:data-label> element, but only
     // as loext chart-properties of the <chart:data-point> element.
-    load(u"/chart2/qa/extras/data/odt/", "tdf135366_data_label_export.odt");
+    load(u"/chart2/qa/extras/data/odt/", u"tdf135366_data_label_export.odt");
     xmlDocUniquePtr pXmlDoc = parseExport("Object 1/content.xml", "writer8");
     CPPUNIT_ASSERT(pXmlDoc);
 
@@ -437,7 +437,7 @@ void Chart2GeometryTest::testTdf135366_CustomLabelText()
     // although the used <chart:data-label> element exists since ODF 1.2.
     const SvtSaveOptions::ODFDefaultVersion 
nCurrentODFVersion(GetODFDefaultVersion());
     SetODFDefaultVersion(SvtSaveOptions::ODFVER_012);
-    load(u"/chart2/qa/extras/data/pptx/", "tdf135366_CustomLabelText.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", u"tdf135366_CustomLabelText.pptx");
     xmlDocUniquePtr pXmlDoc = parseExport("Object 1/content.xml", "impress8");
     CPPUNIT_ASSERT(pXmlDoc);
 
diff --git a/chart2/qa/extras/chart2import.cxx 
b/chart2/qa/extras/chart2import.cxx
index 70cb393ba7b6..316520fb5197 100644
--- a/chart2/qa/extras/chart2import.cxx
+++ b/chart2/qa/extras/chart2import.cxx
@@ -94,7 +94,7 @@ public:
     void testNumberFormatsDOCX();
     void testPercentageNumberFormatsDOCX();
 
-    void testTransparentBackground(OUString const & filename);
+    void testTransparentBackground(std::u16string_view filename);
 
     // below are OOXML default value tests for cases
     // where we fixed the handling of MSO 2007 vs OOXML
@@ -227,7 +227,7 @@ public:
 // split method up into smaller chunks for more detailed tests
 void Chart2ImportTest::Fdo60083()
 {
-    load(u"/chart2/qa/extras/data/ods/", "fdo60083.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"fdo60083.ods");
     uno::Reference< chart2::XChartDocument > xChartDoc = getChartDocFromSheet( 
0, mxComponent );
     CPPUNIT_ASSERT(xChartDoc.is());
 
@@ -276,7 +276,7 @@ void Chart2ImportTest::Fdo60083()
 
 void Chart2ImportTest::testErrorBarRange()
 {
-    load(u"/chart2/qa/extras/data/ods/", "error_bar_range.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"error_bar_range.ods");
     uno::Reference< chart2::XChartDocument > xChartDoc = getChartDocFromSheet( 
0, mxComponent );
     CPPUNIT_ASSERT(xChartDoc.is());
 
@@ -305,7 +305,7 @@ void Chart2ImportTest::testErrorBarRange()
 
 void Chart2ImportTest::testErrorBarFormatting()
 {
-    load(u"/chart2/qa/extras/data/ods/", "error_bar_properties.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"error_bar_properties.ods");
     uno::Reference< chart2::XChartDocument > xChartDoc = getChartDocFromSheet( 
0, mxComponent );
     CPPUNIT_ASSERT(xChartDoc.is());
 
@@ -346,7 +346,7 @@ void Chart2ImportTest::testSteppedLines()
         chart2::CurveStyle_STEP_CENTER_Y
     };
 
-    load(u"/chart2/qa/extras/data/ods/", "stepped_lines.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"stepped_lines.ods");
     for(sal_Int32 nSheet = 0; nSheet < MAXSHEET; ++nSheet)
     {
         uno::Reference< chart2::XChartDocument > xChart2Doc = 
getChartDocFromSheet( nSheet, mxComponent );
@@ -374,7 +374,7 @@ static uno::Sequence < OUString > 
getChartColumnDescriptions( uno::Reference< ch
 
 void Chart2ImportTest::testODSChartSeries()
 {
-    load(u"/chart2/qa/extras/data/ods/", "chart.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"chart.ods");
     uno::Reference< chart::XChartDocument > xChart1Doc ( 
getChartCompFromSheet( 0, mxComponent ), UNO_QUERY_THROW);
     uno::Sequence < OUString > seriesList = getChartColumnDescriptions( 
xChart1Doc);
     CPPUNIT_ASSERT_EQUAL(OUString("Col 1"), seriesList[0]);
@@ -385,7 +385,7 @@ void Chart2ImportTest::testODSChartSeries()
 
 void Chart2ImportTest::testXLSXChartSeries()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "chart.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"chart.xlsx");
     uno::Reference< chart::XChartDocument > xChart1Doc ( 
getChartCompFromSheet( 0, mxComponent ), UNO_QUERY_THROW);
     uno::Sequence < OUString > seriesList = 
getChartColumnDescriptions(xChart1Doc );
     CPPUNIT_ASSERT_EQUAL(OUString("Col 1"), seriesList[0]);
@@ -396,7 +396,7 @@ void Chart2ImportTest::testXLSXChartSeries()
 
 void Chart2ImportTest::testXLSChartSeries()
 {
-    load(u"/chart2/qa/extras/data/xls/", "chart.xls");
+    load(u"/chart2/qa/extras/data/xls/", u"chart.xls");
     uno::Reference< chart::XChartDocument > xChart1Doc ( 
getChartCompFromSheet( 0, mxComponent ), UNO_QUERY_THROW);
     uno::Sequence < OUString > seriesList = 
getChartColumnDescriptions(xChart1Doc );
     CPPUNIT_ASSERT_EQUAL(OUString("Col 1"), seriesList[0]);
@@ -407,7 +407,7 @@ void Chart2ImportTest::testXLSChartSeries()
 
 void Chart2ImportTest::testODTChartSeries()
 {
-    load(u"/chart2/qa/extras/data/odt/", "chart.odt");
+    load(u"/chart2/qa/extras/data/odt/", u"chart.odt");
     uno::Sequence< OUString > seriesList = 
getWriterChartColumnDescriptions(mxComponent);
     CPPUNIT_ASSERT_EQUAL(OUString("Column 1"), seriesList[0]);
     CPPUNIT_ASSERT_EQUAL(OUString("Column 2"), seriesList[1]);
@@ -417,7 +417,7 @@ void Chart2ImportTest::testODTChartSeries()
 
 void Chart2ImportTest::testDOCChartSeries()
 {
-    load(u"/chart2/qa/extras/data/doc/", "chart.doc");
+    load(u"/chart2/qa/extras/data/doc/", u"chart.doc");
     uno::Sequence< OUString > seriesList = 
getWriterChartColumnDescriptions(mxComponent);
     CPPUNIT_ASSERT_EQUAL(OUString("Column 1"), seriesList[0]);
     CPPUNIT_ASSERT_EQUAL(OUString("Column 2"), seriesList[1]);
@@ -426,7 +426,7 @@ void Chart2ImportTest::testDOCChartSeries()
 
 void Chart2ImportTest::testDOCXChartSeries()
 {
-    load(u"/chart2/qa/extras/data/docx/", "chart.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"chart.docx");
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromWriter(0), 
uno::UNO_QUERY);
     CPPUNIT_ASSERT(xChartDoc.is());
 
@@ -442,7 +442,7 @@ void Chart2ImportTest::testDOCXChartSeries()
 
 void Chart2ImportTest::testDOCXChartEmptySeries()
 {
-    load(u"/chart2/qa/extras/data/docx/", "tdf125337.docx");
+    load(u"/chart2/qa/extras/data/docx/", u"tdf125337.docx");
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromWriter(0), 
uno::UNO_QUERY);
     CPPUNIT_ASSERT(xChartDoc.is());
 
@@ -468,7 +468,7 @@ void Chart2ImportTest::testDOCXChartEmptySeries()
 
 void Chart2ImportTest::testTdf81396()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf81396.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf81396.xlsx");
     Reference<chart::XChartDocument> xChartDoc(getChartDocFromSheet(0, 
mxComponent),
                                                UNO_QUERY_THROW);
 
@@ -485,7 +485,7 @@ void Chart2ImportTest::testTdf81396()
 
 void Chart2ImportTest::testPPTXChartErrorBars()
 {
-    load(u"/chart2/qa/extras/data/pptx/", "tdf127720.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", u"tdf127720.pptx");
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromDrawImpress(0, 
0), uno::UNO_QUERY);
     CPPUNIT_ASSERT(xChartDoc.is());
 
@@ -498,7 +498,7 @@ void Chart2ImportTest::testPPTXChartErrorBars()
 
 void Chart2ImportTest::testDOCXChartValuesSize()
 {
-    load( u"/chart2/qa/extras/data/docx/", "bubblechart.docx" );
+    load( u"/chart2/qa/extras/data/docx/", u"bubblechart.docx" );
     Reference<chart2::XChartDocument> xChartDoc( getChartDocFromWriter(0), 
uno::UNO_QUERY );
     CPPUNIT_ASSERT( xChartDoc.is() );
 
@@ -531,7 +531,7 @@ void Chart2ImportTest::testPPTChartSeries()
 void Chart2ImportTest::testPPTXChartSeries()
 {
     //test chart series names for pptx
-    load(u"/chart2/qa/extras/data/pptx/", "chart.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", u"chart.pptx");
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromDrawImpress(0, 
0), uno::UNO_QUERY);
     CPPUNIT_ASSERT(xChartDoc.is());
 
@@ -548,7 +548,7 @@ void Chart2ImportTest::testPPTXChartSeries()
 void Chart2ImportTest::testPPTXSparseChartSeries()
 {
     //test chart series sparse data for pptx
-    load(u"/chart2/qa/extras/data/pptx/", "sparse-chart.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", u"sparse-chart.pptx");
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromDrawImpress(0, 
0), uno::UNO_QUERY);
     CPPUNIT_ASSERT(xChartDoc.is());
 
@@ -569,7 +569,7 @@ void Chart2ImportTest::testPPTXSparseChartSeries()
 
 void Chart2ImportTest::testPPTXHiddenDataSeries()
 {
-    load(u"/chart2/qa/extras/data/pptx/", 
"stacked-bar-chart-hidden-series.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", 
u"stacked-bar-chart-hidden-series.pptx");
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromDrawImpress(0, 
0), uno::UNO_QUERY);
     CPPUNIT_ASSERT(xChartDoc.is());
 
@@ -608,7 +608,7 @@ void Chart2ImportTest::testPPTXHiddenDataSeries()
 
 void Chart2ImportTest::testPPTXPercentageNumberFormats()
 {
-    load(u"/chart2/qa/extras/data/pptx/", "percentage-number-formats.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", u"percentage-number-formats.pptx");
 
     // 1st chart
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromDrawImpress(0, 
0), uno::UNO_QUERY);
@@ -674,7 +674,7 @@ void Chart2ImportTest::testPPTXPercentageNumberFormats()
 
 void Chart2ImportTest::testPieChartLabelsNumFormat()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "tdfPieNumFormat.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdfPieNumFormat.xlsx");
     uno::Reference< chart::XChartDocument > xChartDoc(getChartCompFromSheet(0, 
mxComponent), UNO_QUERY_THROW);
     CPPUNIT_ASSERT(xChartDoc.is());
     // test data point labels format
@@ -686,7 +686,7 @@ void Chart2ImportTest::testPieChartLabelsNumFormat()
 
 void Chart2ImportTest::testPPTXStackedNonStackedYAxis()
 {
-    load(u"/chart2/qa/extras/data/pptx/", 
"stacked-non-stacked-mix-y-axis.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", 
u"stacked-non-stacked-mix-y-axis.pptx");
 
     // 1st chart is a normal stacked column.
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromDrawImpress(0, 
0), uno::UNO_QUERY);
@@ -770,7 +770,7 @@ void Chart2ImportTest::testBnc864396()
 
 void Chart2ImportTest::testBnc889755()
 {
-    load(u"/chart2/qa/extras/data/pptx/", "bnc889755.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", u"bnc889755.pptx");
     uno::Reference<chart2::XChartDocument> 
xChartDoc(getChartDocFromDrawImpress(0, 5), uno::UNO_QUERY_THROW);
     CPPUNIT_ASSERT(xChartDoc->hasInternalDataProvider());
 
@@ -802,7 +802,7 @@ void Chart2ImportTest::testBnc889755()
 
 void Chart2ImportTest::testBnc882383()
 {
-    load(u"/chart2/qa/extras/data/pptx/", "bnc882383.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", u"bnc882383.pptx");
     uno::Reference<chart2::XChartDocument> 
xChartDoc(getChartDocFromDrawImpress(0, 0), uno::UNO_QUERY_THROW);
     uno::Reference<chart2::XDataSeries> 
xDataSeries(getDataSeriesFromDoc(xChartDoc, 0));
     CPPUNIT_ASSERT(xDataSeries.is());
@@ -815,7 +815,7 @@ void Chart2ImportTest::testBnc882383()
 
 void Chart2ImportTest::testTransparencyGradientValue()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf128732.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf128732.xlsx");
     uno::Reference< chart2::XChartDocument > xChartDoc = 
getChartDocFromSheet(0, mxComponent);
     CPPUNIT_ASSERT(xChartDoc.is());
     uno::Reference<chart2::XDataSeries> 
xDataSeries(getDataSeriesFromDoc(xChartDoc, 0));
@@ -838,7 +838,7 @@ void Chart2ImportTest::testTransparencyGradientValue()
 
 void Chart2ImportTest::testSimpleStrictXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "strict_chart.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"strict_chart.xlsx");
     uno::Reference< chart2::XChartDocument > xChartDoc = getChartDocFromSheet( 
0, mxComponent );
     CPPUNIT_ASSERT(xChartDoc.is());
 
@@ -849,7 +849,7 @@ void Chart2ImportTest::testSimpleStrictXLSX()
 
 void Chart2ImportTest::testDelayedCellImport()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "fdo70609.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"fdo70609.xlsx");
     uno::Reference< chart2::XChartDocument > xChartDoc = getChartDocFromSheet( 
0, mxComponent );
     Reference< chart2::data::XDataSequence > xDataSeq =
         getDataSequenceFromDocByRole(xChartDoc, u"values-x");
@@ -860,7 +860,7 @@ void Chart2ImportTest::testDelayedCellImport()
 
 void Chart2ImportTest::testFlatODSStackedColumnChart()
 {
-    load(u"/chart2/qa/extras/data/fods/", "stacked-column-chart.fods");
+    load(u"/chart2/qa/extras/data/fods/", u"stacked-column-chart.fods");
     Reference<chart2::XChartDocument> xChartDoc = getChartDocFromSheet(0, 
mxComponent);
     CPPUNIT_ASSERT(xChartDoc.is());
 
@@ -877,7 +877,7 @@ void Chart2ImportTest::testFlatODSStackedColumnChart()
 
 void Chart2ImportTest::testFdo78080()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "fdo78080.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"fdo78080.xlsx");
     Reference<chart2::XChartDocument> xChartDoc = getChartDocFromSheet(0, 
mxComponent);
     CPPUNIT_ASSERT(xChartDoc.is());
 
@@ -888,7 +888,7 @@ void Chart2ImportTest::testFdo78080()
 
 void Chart2ImportTest::testTdf127811()
 {
-    load(u"/chart2/qa/extras/data/pptx/", "tdf127811.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", u"tdf127811.pptx");
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromDrawImpress(0, 
0), uno::UNO_QUERY);
     CPPUNIT_ASSERT(xChartDoc.is());
 
@@ -907,7 +907,7 @@ void Chart2ImportTest::testTdf127811()
 
 void Chart2ImportTest::testTdf86624()
 {
-    load(u"/chart2/qa/extras/data/ods/", "tdf86624.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"tdf86624.ods");
     uno::Reference< chart2::XChartDocument > xChart2Doc = 
getChartDocFromSheet(0, mxComponent);
     uno::Reference< chart::XChartDocument > xChartDoc (xChart2Doc, 
uno::UNO_QUERY);
     uno::Reference<drawing::XShape> xLegend = xChartDoc->getLegend();
@@ -918,7 +918,7 @@ void Chart2ImportTest::testTdf86624()
 
 void Chart2ImportTest::testTdf105517()
 {
-    load(u"/chart2/qa/extras/data/pptx/", "tdf105517.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", u"tdf105517.pptx");
     Reference<chart2::XChartDocument> xChartDoc(getChartDocFromDrawImpress(0, 
0), uno::UNO_QUERY);
     CPPUNIT_ASSERT(xChartDoc.is());
 
@@ -946,7 +946,7 @@ void Chart2ImportTest::testTdf105517()
 
 void Chart2ImportTest::testTdf106217()
 {
-    load(u"/chart2/qa/extras/data/pptx/", "tdf106217.pptx");
+    load(u"/chart2/qa/extras/data/pptx/", u"tdf106217.pptx");
     uno::Reference< chart::XChartDocument > xChartDoc = 
getChartDocFromDrawImpress(0, 0);
     CPPUNIT_ASSERT(xChartDoc.is());
 
@@ -969,7 +969,7 @@ void Chart2ImportTest::testTdf106217()
 void Chart2ImportTest::testTdf108021()
 {
     // Tdf108021 : To check TextBreak value is true.
-    load(u"/chart2/qa/extras/data/ods/", "tdf108021.ods");
+    load(u"/chart2/qa/extras/data/ods/", u"tdf108021.ods");
     uno::Reference< chart::XDiagram > mxDiagram;
     uno::Reference< beans::XPropertySet > xAxisProp;
     bool bTextBreak = false;
@@ -987,7 +987,7 @@ void Chart2ImportTest::testTdf108021()
 void Chart2ImportTest::testTdf100084()
 {
     // The test file was created with IBM Cognos, make sure there is a diagram.
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf100084.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf100084.xlsx");
     Reference<chart2::XChartDocument> xChartDoc = getChartDocFromSheet(0, 
mxComponent);
     CPPUNIT_ASSERT_MESSAGE("failed to load chart", xChartDoc.is());
     Reference<beans::XPropertySet> xDiagram(xChartDoc->getFirstDiagram(), 
UNO_QUERY);
@@ -996,7 +996,7 @@ void Chart2ImportTest::testTdf100084()
 
 void Chart2ImportTest::testTdf124817()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf124817.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf124817.xlsx");
     Reference<chart2::XChartDocument> xChartDoc = getChartDocFromSheet(0, 
mxComponent);
     CPPUNIT_ASSERT_MESSAGE("failed to load chart", xChartDoc.is());
 
@@ -1027,7 +1027,7 @@ void Chart2ImportTest::testTdf124817()
 
 void Chart2ImportTest::testTdf126033()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "tdf126033.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"tdf126033.xlsx");
     Reference<chart2::XChartDocument> xChartDoc = getChartDocFromSheet(0, 
mxComponent);
     CPPUNIT_ASSERT_MESSAGE("failed to load chart", xChartDoc.is());
 
@@ -1042,7 +1042,7 @@ void Chart2ImportTest::testTdf126033()
     CPPUNIT_ASSERT_EQUAL(static_cast<sal_Int32>(176), aSymblProp.Size.Height);
 }
 
-void Chart2ImportTest::testTransparentBackground(OUString const & filename)
+void Chart2ImportTest::testTransparentBackground(std::u16string_view filename)
 {
     load(u"/chart2/qa/extras/data/xlsx/", filename);
     uno::Reference< chart2::XChartDocument > xChartDoc = 
getChartDocFromSheet(0, mxComponent);
@@ -1062,16 +1062,16 @@ void 
Chart2ImportTest::testTransparentBackground(OUString const & filename)
 // 2 test methods here so that tearDown() can dispose the document
 void Chart2ImportTest::testFdo54361()
 {
-    testTransparentBackground("fdo54361.xlsx");
+    testTransparentBackground(u"fdo54361.xlsx");
 }
 void Chart2ImportTest::testFdo54361_1()
 {
-    testTransparentBackground("fdo54361-1.xlsx");
+    testTransparentBackground(u"fdo54361-1.xlsx");
 }
 
 void Chart2ImportTest::testAutoBackgroundXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "chart-auto-background.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"chart-auto-background.xlsx");
     uno::Reference<chart2::XChartDocument> xChartDoc = getChartDocFromSheet(0, 
mxComponent);
     CPPUNIT_ASSERT_MESSAGE("failed to load chart", xChartDoc.is());
 
@@ -1088,7 +1088,7 @@ void Chart2ImportTest::testAutoBackgroundXLSX()
 
 void Chart2ImportTest::testAutoChartAreaBorderPropXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "chart-area-style-border.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"chart-area-style-border.xlsx");
     uno::Reference<chart2::XChartDocument> xChartDoc = getChartDocFromSheet(0, 
mxComponent);
     CPPUNIT_ASSERT_MESSAGE("failed to load chart", xChartDoc.is());
 
@@ -1108,7 +1108,7 @@ void Chart2ImportTest::testAutoChartAreaBorderPropXLSX()
 
 void Chart2ImportTest::testChartAreaStyleBackgroundXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "chart-area-style-background.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"chart-area-style-background.xlsx");
     uno::Reference<chart2::XChartDocument> xChartDoc = getChartDocFromSheet(0, 
mxComponent);
     CPPUNIT_ASSERT_MESSAGE("failed to load chart", xChartDoc.is());
 
@@ -1125,7 +1125,7 @@ void Chart2ImportTest::testChartAreaStyleBackgroundXLSX()
 
 void Chart2ImportTest::testChartHatchFillXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "chart-hatch-fill.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"chart-hatch-fill.xlsx");
     uno::Reference<chart2::XChartDocument> xChartDoc = getChartDocFromSheet(0, 
mxComponent);
     CPPUNIT_ASSERT_MESSAGE("failed to load chart", xChartDoc.is());
 
@@ -1167,7 +1167,7 @@ void Chart2ImportTest::testChartHatchFillXLSX()
 
 void Chart2ImportTest::testAxisTextRotationXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "axis-label-rotation.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"axis-label-rotation.xlsx");
     uno::Reference<chart2::XChartDocument> xChartDoc = getChartDocFromSheet(0, 
mxComponent);
     CPPUNIT_ASSERT_MESSAGE("failed to load chart", xChartDoc.is());
 
@@ -1205,7 +1205,7 @@ void Chart2ImportTest::testTextCanOverlapXLSX()
 void Chart2ImportTest::testTextBreakXLSX()
 {
     // tdf#122091: To check textbreak value is true in case of 0° degree of 
Axis label rotation.
-    load(u"/chart2/qa/extras/data/xlsx/", "chart_label_text_break.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"chart_label_text_break.xlsx");
     uno::Reference< chart::XDiagram > mxDiagram;
     uno::Reference< beans::XPropertySet > xAxisProp;
     bool textBreak = false;
@@ -1223,7 +1223,7 @@ void Chart2ImportTest::testTextBreakXLSX()
 
 void Chart2ImportTest::testNumberFormatsXLSX()
 {
-    load(u"/chart2/qa/extras/data/xlsx/", "number-formats.xlsx");
+    load(u"/chart2/qa/extras/data/xlsx/", u"number-formats.xlsx");
     Reference<chart2::XChartDocument> xChartDoc = getChartDocFromSheet(0, 
mxComponent);
     CPPUNIT_ASSERT_MESSAGE("failed to load chart", xChartDoc.is());
 

... etc. - the rest is truncated

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