s = v.verbalize(numExpr6);
assertEquals("4.9 * 4 + numVar", s);
IBooleanExpression boolExpr1 = new SimpleBooleanExpression(true);
IBooleanExpression boolExpr2 = new SimpleBooleanExpression(false);
IBooleanExpression boolExpr3 = new ReferenceBooleanExpression(var);
IBooleanExpression boolExpr4 = new BooleanNumberExpression(numExpr1, "==", numExpr2);
IBooleanExpression boolExpr5 = new BooleanNumberExpression(numExpr1, "!=", numExpr2);
IBooleanExpression boolExpr6 = new BooleanNumberExpression(numExpr1, "<=", numExpr2);
IBooleanExpression boolExpr7 = new BooleanNumberExpression(numExpr1, ">=", numExpr2);