如何在测试类里面测试collection集合里的元素

Question

我想在测试类里面测试collection里面的元素，但是get方法似乎只适用于ArrayList,/***@paramname*@paramdescription*@paramprice*/publicRecipe(Stringname,Stringdescription,doubleprice,Ingredient...ingredients){if(name==null||name.isEmpty()){thrownewIllegalArgumentException("namecan'tbenulloranemptystring");}this.name=name;if(description==null||description.isEmpty()){thrownewIllegalArgumentException("descriptioncan'tbenulloranemptystring");}this.description=description;if(price

Answer 1

r1.getIngredients().get(0).getName()改成r1.getIngredients().iterator().next().getName()
                            

Answer 2

你这样强转还有使用collection的必要呢？而且你还是不是转成list，而是arraylist！你这完全是挂着羊头卖狗肉啊