@Test
public void testEquals() {

ring attribute = "foo";
tPresentFilter originalObject = new NotPresentFilter(attribute);
tPresentFilter identicalObject = new NotPresentFilter(attribute);
tPresentFilter differentObject = new NotPresentFilter("bar");
tPresentFilter subclassObject = new NotPresentFilter(attribute) {
    };
    new EqualsTester(originalObject, identicalObject, differentObject,
            subclassObject);
}