@Test
public void testConditionAndActionCellValue() {

    GuidedDTDRLPersistence p = new GuidedDTDRLPersistence();
    assertFalse(p.validCell(null,
                            DataType.DataTypes.NUMERIC));
    assertFalse(p.validCell("",
                            DataType.DataTypes.NUMERIC));
    assertFalse(p.validCell("  ",
                            DataType.DataTypes.NUMERIC));
    assertFalse(p.validCell(null,
                            DataType.DataTypes.STRING));
    assertFalse(p.validCell("",
                            DataType.DataTypes.STRING));
    assertFalse(p.validCell("  ",
                            DataType.DataTypes.STRING));
}