XSSFWorkbook wb = setupSheet();
XSSFSheet sheet = wb.getSheetAt(0);
assertNotNull(wb);
assertNotNull(sheet);
XSSFPivotTable pivotTable = sheet.createPivotTable(new AreaReference("A1:B2"), new CellReference("H5"));
assertNotNull(pivotTable);
assertTrue(wb.getPivotTables().size() > 0);
assertNotNull(wb);
XSSFSheet sheet2 = wb.createSheet();
XSSFPivotTable pivotTable2 = sheet2.createPivotTable(new AreaReference("A1:B2"), new CellReference("H5"), sheet);
assertNotNull(pivotTable2);
assertTrue(wb.getPivotTables().size() > 1);
}