@Test
public void unionIntInt1() throws InvalidConstrainingFacetException {
RestrictedDatatype<Number> dr1 = new RestrictedRealDatatype( dt, IntegerInterval
.allIntegers(), null, null );
dr1 = dr1.applyConstrainingFacet( MIN_INCLUSIVE.getName(), -10 );
dr1 = dr1.applyConstrainingFacet( MAX_INCLUSIVE.getName(), -2 );
RestrictedDatatype<Number> dr2 = new RestrictedRealDatatype( dt, IntegerInterval
.allIntegers(), null, null );
dr2 = dr2.applyConstrainingFacet( MIN_INCLUSIVE.getName(), 12 );
dr2 = dr2.applyConstrainingFacet( MAX_INCLUSIVE.getName(), 13 );