final InternalFactHandle f0 = (InternalFactHandle) wm.insert( cheddar );
final InternalFactHandle f1 = (InternalFactHandle) wm.insert( stilton );
final LeftTupleImpl tuple = new LeftTupleImpl( f0, sink, true );
f0.removeLeftTuple(tuple);
final PredicateContextEntry predicateContext = (PredicateContextEntry) predicate.createContextEntry();
predicateContext.leftTuple = tuple;
predicateContext.workingMemory = wm;
assertTrue( predicate.isAllowedCachedLeft( predicateContext,
f1 ) );