sw: paragraph styles: add ODT filter for a linked character style

And the same in the other direction: link a para style from a char
style.

With this, the ODT filter is on par with the DOCX one for this feature.

Change-Id: Idd994b933672ab47a5f87a75c92abc137d3c73b2
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/122753
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins

2 files changed, 36 insertions, 0 deletions

diff --git a/sw/qa/extras/odfexport/data/style-link.fodt b/sw/qa/extras/odfexport/data/style-link.fodt
new file mode 100644
index 000000000000..76c36c698845
--- /dev/null
+++ b/sw/qa/extras/odfexport/data/style-link.fodt
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<office:document xmlns:text="urn:oasis:names:tc:opendocument:xmlns:text:1.0" xmlns:style="urn:oasis:names:tc:opendocument:xmlns:style:1.0" xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0" xmlns:loext="urn:org:documentfoundation:names:experimental:office:xmlns:loext:1.0" office:version="1.3" office:mimetype="application/vnd.oasis.opendocument.text">
+  <office:styles>
+    <style:style style:name="List_20_Paragraph" style:display-name="List Paragraph" style:family="paragraph" loext:linked-style-name="List_20_Paragraph_20_Char"/>
+    <style:style style:name="List_20_Paragraph_20_Char" style:display-name="List Paragraph Char" style:family="text" loext:linked-style-name="List_20_Paragraph"/>
+  </office:styles>
+  <office:master-styles>
+    <style:master-page style:name="Standard"/>
+  </office:master-styles>
+  <office:body>
+    <office:text>
+      <text:p/>
+    </office:text>
+  </office:body>
+</office:document>
diff --git a/sw/qa/extras/odfexport/odfexport2.cxx b/sw/qa/extras/odfexport/odfexport2.cxx
index bb05521f08fc..c73dc611db04 100644
--- a/sw/qa/extras/odfexport/odfexport2.cxx
+++ b/sw/qa/extras/odfexport/odfexport2.cxx
@@ -184,6 +184,27 @@ DECLARE_ODFEXPORT_TEST(testListFormatOdt, "listformat.odt")
     }
 }
 
+CPPUNIT_TEST_FIXTURE(Test, testStyleLink)
+{
+    // Given a document with a para and a char style that links each other, when loading that
+    // document:
+    load(mpTestDocumentPath, "style-link.fodt");
+
+    // Then make sure the char style links the para one:
+    uno::Any aCharStyle = getStyles("CharacterStyles")->getByName("List Paragraph Char");
+    // Without the accompanying fix in place, this test would have failed with:
+    // - Expected: List Paragraph
+    // - Actual  :
+    // i.e. the linked style was lost on import.
+    CPPUNIT_ASSERT_EQUAL(OUString("List Paragraph"), getProperty<OUString>(aCharStyle, "LinkStyle"));
+    uno::Any aParaStyle = getStyles("ParagraphStyles")->getByName("List Paragraph");
+    // Without the accompanying fix in place, this test would have failed with:
+    // - Expected: List Paragraph Char
+    // - Actual  :
+    // i.e. the linked style was lost on import.
+    CPPUNIT_ASSERT_EQUAL(OUString("List Paragraph Char"), getProperty<OUString>(aParaStyle, "LinkStyle"));
+}
+
 // This test started in LO 7.2. Use the odfexport.cxx if you intend to backport to 7.1.
 
 CPPUNIT_PLUGIN_IMPLEMENT();