ObservationMatcherOp.EQUALS);
MagnitudeFieldMatcher matcher2 = new MagnitudeFieldMatcher(4.0,
ObservationMatcherOp.LESS_THAN);
ObservationFilter filter = new ObservationFilter();
filter.addMatcher(matcher1);
filter.addMatcher(matcher2);
ValidObservation ob = new ValidObservation();
ob.setObsCode("ABC");
ob.setMagnitude(new Magnitude(3.0, 0));
assertTrue(filter.matches(ob));
}