@Test
public void testEquals() {

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