Unit test for text rotation inside textbox

Hello

I am working on bug tdf#104290
https://bugs.documentfoundation.org/show_bug.cgi?id=104290
I've sended a patch for fix and i need to send unit test. I've couldnt
found unit test for text rotation inside textbox. I've just found one
property named "TextRotation" and i've tried it but i get error called
UnknownPropertyException. I did search opengrok but i couldnt found
anything else.

This is my unit test:

void ScFiltersTest::testTdf104290XLSX()
{
    ScDocShellRef xDocSh = loadDoc("tdf104290.", FORMAT_XLSX);
    CPPUNIT_ASSERT_MESSAGE("Failed to load tdf104290 .xlsx", xDocSh.is());
    uno::Reference< drawing::XDrawPagesSupplier > xDoc(
        xDocSh->GetModel(), uno::UNO_QUERY_THROW );
    uno::Reference< drawing::XDrawPage > xPage(
        xDoc->getDrawPages()->getByIndex(0), uno::UNO_QUERY_THROW );
    uno::Reference< drawing::XShape > xShape(
        xPage->getByIndex(0), uno::UNO_QUERY_THROW );
    CPPUNIT_ASSERT_MESSAGE( "failed to load shape", xShape.is() );
    uno::Reference< beans::XPropertySet > xShapeProperties(
        xShape, uno::UNO_QUERY );
    sal_Int32 nTextRotate = 0;
    xShapeProperties->getPropertyValue("TextRotation") >>= nTextRotate;
    CPPUNIT_ASSERT(nTextRotate == 0);
    xDocSh->DoClose();
}

Is there any example unit test for text rotation inside textbox or
somebody knows property name of text rotation inside textbox? Thank
you very much