bug 59796: XSSFTable#getRowCount off-by-one error

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1751373 13f79535-47bb-0310-9956-ffa450edef68

src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFTable.java

 
     
     /**
-     *  @return the total number of rows in the selection. (Note: in this version autofiltering is ignored)
-     *
+     * @return the total number of rows in the selection. (Note: in this version autofiltering is ignored)
+     * Returns <code>0</code> if the start or end cell references are not set.
+     * 
      * Does not track updates to underlying changes to CTTable
      * To synchronize with changes to the underlying CTTable,
      * call {@link #updateReferences()}.
         CellReference from = getStartCellReference();
         CellReference to = getEndCellReference();
         
-        int rowCount = -1;
+        int rowCount = 0;
         if (from!=null && to!=null) {
-            // FIXME: shouldn't this be to-from+1?
-            rowCount = to.getRow()-from.getRow();
+            rowCount = to.getRow() - from.getRow() + 1;
         }
         return rowCount;
     }

src/ooxml/testcases/org/apache/poi/xssf/usermodel/TestXSSFTable.java

         assertEquals(new CellReference("M3"), table.getEndCellReference());
 
     }
+
+    @Test
+    public void getRowCount() {
+        XSSFWorkbook wb = new XSSFWorkbook();
+        XSSFSheet sh = wb.createSheet();
+        XSSFTable table = sh.createTable();
+        CTTable ctTable = table.getCTTable();
+
+        assertEquals(0, table.getRowCount());
+
+        ctTable.setRef("B2:B2");
+        // update cell references to clear the cache
+        table.updateReferences();
+        assertEquals(1, table.getRowCount());
+
+        ctTable.setRef("B2:B12");
+        // update cell references to clear the cache
+        table.updateReferences();
+        assertEquals(11, table.getRowCount());
+    }
 }