@Test
public void isDefault(){

	FieldName name = FieldName.create("x");
	DataField dataField = new DataField(name, OpType.CONTINUOUS, DataType.DOUBLE);
	MiningField miningField = new MiningField(name);
	assertTrue(InputFieldUtil.isDefault(dataField, miningField));
	miningField.setOpType(OpType.CATEGORICAL);
	assertFalse(InputFieldUtil.isDefault(dataField, miningField));
}