Unit Test - Piece of Logic Covered or Not?

Emma coverage report will show uncovered pieces of logic red. For example,

if (validField(fk.getName(), valueFK)) {
   criteria.add(buildRestriction(propertyTypes[i], value, relationName));
   criteriaCount.add(buildRestriction(propertyTypes[i], value, relationName));
}

In the unit test, you will need to make the validField returns true. And then the report will show them covered and mark them green.