fdo#71076: Write test for this.

This was actually just one element of all that contributed to this bug.
Unfortunately it's a bit hard to test the others.

Change-Id: I7a0d88c0b829e7b7859aecfc20df87f6837ecb4a

sc/inc/document.hxx

@@ -1217,13 +1217,14 @@ public:
 
     /**
      * Copy only raw cell values to another document.  Formula cells are
-     * converted to raw cells.  No formatting info are copied.
+     * converted to raw cells.  No formatting info are copied except for
+     * number formats.
      *
      * @param rSrcRange source range in the source document
      * @param nDestTab table in the clip document to copy to.
      * @param pDestDoc document to copy to
      */
-    void CopyStaticToDocument(const ScRange& rSrcRange, SCTAB nDestTab, ScDocument* pDestDoc);
+    SC_DLLPUBLIC void CopyStaticToDocument(const ScRange& rSrcRange, SCTAB nDestTab, ScDocument* pDestDoc);
 
     /**
      * Copy only cell, nothing but cell to another document.

sc/qa/unit/subsequent_filters-test.cxx

@@ -174,6 +174,7 @@ public:
     void testExternalRefCacheXLSX();
     void testExternalRefCacheODS();
     void testHybridSharedStringODS();
+    void testCopyMergedNumberFormats();
 
     CPPUNIT_TEST_SUITE(ScFiltersTest);
     CPPUNIT_TEST(testBasicCellContentODS);
@@ -252,6 +253,7 @@ public:
     CPPUNIT_TEST(testExternalRefCacheXLSX);
     CPPUNIT_TEST(testExternalRefCacheODS);
     CPPUNIT_TEST(testHybridSharedStringODS);
+    CPPUNIT_TEST(testCopyMergedNumberFormats);
     CPPUNIT_TEST_SUITE_END();
 
 private:
@@ -2583,6 +2585,29 @@ void ScFiltersTest::testHybridSharedStringODS()
     xDocSh->DoClose();
 }
 
+void ScFiltersTest::testCopyMergedNumberFormats()
+{
+    ScDocShellRef xDocSh = loadDoc("copy-merged-number-formats.", ODS);
+    CPPUNIT_ASSERT(xDocSh.Is());
+    ScDocument* pDoc = xDocSh->GetDocument();
+
+    // Cells B1, C1 and D1 are formatted as dates.
+    OUString aStrB1 = pDoc->GetString(ScAddress(1,0,0));
+    OUString aStrC1 = pDoc->GetString(ScAddress(2,0,0));
+    OUString aStrD1 = pDoc->GetString(ScAddress(3,0,0));
+
+    ScDocument aCopyDoc;
+    aCopyDoc.InsertTab(0, "CopyHere");
+    pDoc->CopyStaticToDocument(ScRange(1,0,0,3,0,0), 0, &aCopyDoc);
+
+    // Make sure the date formats are copied to the new document.
+    CPPUNIT_ASSERT_EQUAL(aStrB1, aCopyDoc.GetString(ScAddress(1,0,0)));
+    CPPUNIT_ASSERT_EQUAL(aStrC1, aCopyDoc.GetString(ScAddress(2,0,0)));
+    CPPUNIT_ASSERT_EQUAL(aStrD1, aCopyDoc.GetString(ScAddress(3,0,0)));
+
+    xDocSh->DoClose();
+}
+
 ScFiltersTest::ScFiltersTest()
       : ScBootstrapFixture( "/sc/qa/unit/data" )
 {