add unit test for fdo#88398

Check that grouped area listeners aren't discarded when unsharing a
grouped formula.

Change-Id: Ic3d3e9acb5b97d927a85ca433de127dd3b74a30c

sc/qa/unit/ucalc.hxx

@@ -329,6 +329,7 @@ public:
     void testSharedFormulaUpdateOnNamedRangeChange();
     void testSharedFormulaUpdateOnDBChange();
     void testSharedFormulaAbsCellListener();
+    void testSharedFormulaUnshareAreaListeners();
     void testFormulaPosition();
 
     void testMixData();
@@ -568,6 +569,7 @@ public:
     CPPUNIT_TEST(testSharedFormulaUpdateOnNamedRangeChange);
     CPPUNIT_TEST(testSharedFormulaUpdateOnDBChange);
     CPPUNIT_TEST(testSharedFormulaAbsCellListener);
+    CPPUNIT_TEST(testSharedFormulaUnshareAreaListeners);
     CPPUNIT_TEST(testFormulaPosition);
     CPPUNIT_TEST(testMixData);
     CPPUNIT_TEST(testJumpToPrecedentsDependents);

sc/qa/unit/ucalc_sharedformula.cxx

@@ -1702,4 +1702,35 @@ void Test::testSharedFormulaAbsCellListener()
     m_pDoc->DeleteTab(0);
 }
 
+void Test::testSharedFormulaUnshareAreaListeners()
+{
+    sc::AutoCalcSwitch aACSwitch(*m_pDoc, true); // turn on auto calc.
+
+    m_pDoc->InsertTab(0, "Test");
+
+    const char* pData[][2] = {
+        { "=SUM(B1:B2)", "1" },
+        { "=SUM(B2:B3)", "2" },
+        { "=SUM(B3:B4)", "4" },
+        {             0, "8" }
+    };
+
+    insertRangeData(m_pDoc, ScAddress(0,0,0), pData, SAL_N_ELEMENTS(pData));
+
+    // Check that A1:A3 is a formula group.
+    const ScFormulaCell* pFC = m_pDoc->GetFormulaCell(ScAddress(0,0,0));
+    CPPUNIT_ASSERT(pFC);
+    CPPUNIT_ASSERT_EQUAL(static_cast<SCROW>(0), pFC->GetSharedTopRow());
+    CPPUNIT_ASSERT_EQUAL(static_cast<SCROW>(3), pFC->GetSharedLength());
+
+    m_pDoc->SetValue(ScAddress(0,1,0), 23.0);   // unshare at A2
+    m_pDoc->SetValue(ScAddress(1,1,0), 16.0);   // change value of B2
+    m_pDoc->SetValue(ScAddress(1,2,0), 32.0);   // change value of B3
+    // A1 and A3 should be recalculated.
+    CPPUNIT_ASSERT_EQUAL(17.0, m_pDoc->GetValue(ScAddress(0,0,0)));
+    CPPUNIT_ASSERT_EQUAL(40.0, m_pDoc->GetValue(ScAddress(0,2,0)));
+
+    m_pDoc->DeleteTab(0);
+}
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */