Add unit-tests for DOCX preservation of 'table cell redline'

Added unit-tests to make sure that 'table cell redlines'
(e.g. - table cell was inserted \ removed) are being round
tripped correctly from a DOCX file.

Change-Id: I773cb51a39654d2640200489d5199361b56396c7
Reviewed-on: https://gerrit.libreoffice.org/7878Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Miklos Vajna <vmiklos@collabora.co.uk>

sw/qa/extras/ooxmlexport/ooxmlexport.cxx

@@ -2309,6 +2309,22 @@ DECLARE_OOXMLEXPORT_TEST(testTrackChangesInsertedTableRow, "testTrackChangesInse
     assertXPath(pXmlDoc, "/w:document/w:body/w:tbl/w:tr[2]/w:trPr/w:ins");
 }
 
+DECLARE_OOXMLEXPORT_TEST(testTrackChangesDeletedTableCell, "testTrackChangesDeletedTableCell.docx")
+{
+    xmlDocPtr pXmlDoc = parseExport("word/document.xml");
+    if (!pXmlDoc)
+        return;
+    assertXPath(pXmlDoc, "/w:document/w:body/w:tbl/w:tr[3]/w:tc/w:tcPr/w:cellDel");
+}
+
+DECLARE_OOXMLEXPORT_TEST(testTrackChangesInsertedTableCell, "testTrackChangesInsertedTableCell.docx")
+{
+    xmlDocPtr pXmlDoc = parseExport("word/document.xml");
+    if (!pXmlDoc)
+        return;
+    assertXPath(pXmlDoc, "/w:document/w:body/w:tbl/w:tr[3]/w:tc/w:tcPr/w:cellIns");
+}
+
 DECLARE_OOXMLEXPORT_TEST(testFdo69649, "fdo69649.docx")
 {
     // The DOCX containing the Table of Contents was not exported with correct page nos