sw: Unit test for cycle in lcl_CreatePortions

Reviewed on:
	https://gerrit.libreoffice.org/13413
Conflicts:
	sw/qa/extras/uiwriter/uiwriter.cxx

Change-Id: I26a8707046d7f30381fb51c41e49f8dee4796ba7

sw/qa/extras/uiwriter/uiwriter.cxx

@@ -63,6 +63,7 @@ public:
     void testAutoCorr();
     void testFdo87005();
     void testMergeDoc();
+    void testCreatePortions();
 
     CPPUNIT_TEST_SUITE(SwUiWriterTest);
     CPPUNIT_TEST(testReplaceForward);
@@ -89,6 +90,7 @@ public:
     CPPUNIT_TEST(testAutoCorr);
     CPPUNIT_TEST(testFdo87005);
     CPPUNIT_TEST(testMergeDoc);
+    CPPUNIT_TEST(testCreatePortions);
 
     CPPUNIT_TEST_SUITE_END();
 
@@ -662,6 +664,21 @@ void SwUiWriterTest::testMergeDoc()
     getParagraph(7, "");
 }
 
+void SwUiWriterTest::testCreatePortions()
+{
+    createDoc("uno-cycle.odt");
+    uno::Reference<text::XBookmarksSupplier> xBookmarksSupplier(mxComponent, uno::UNO_QUERY);
+    uno::Reference<text::XTextContent> xText(xBookmarksSupplier->getBookmarks()->getByName("Mark"), uno::UNO_QUERY);
+    uno::Reference<container::XEnumerationAccess> xTextCursor(xText->getAnchor(), uno::UNO_QUERY);
+    CPPUNIT_ASSERT(xTextCursor.is());
+
+    uno::Reference<container::XEnumerationAccess> xParagraph(
+            xTextCursor->createEnumeration()->nextElement(), uno::UNO_QUERY);
+    CPPUNIT_ASSERT(xParagraph.is());
+    // This looped forever in lcl_CreatePortions
+    xParagraph->createEnumeration();
+}
+
 CPPUNIT_TEST_SUITE_REGISTRATION(SwUiWriterTest);
 CPPUNIT_PLUGIN_IMPLEMENT();