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使用JUNIT但不用于测试？

发布于 2025-02-03 21:22:46 字数 185 浏览 2 评论 0原文

我有一个带有Vaadin的Spring Boot应用程序，我只需要简单的UI元素验证而无需备份BEAN。例如，仅检查TextField值是否为空，是否为空。

由于验证者需要一个bean，因此我正在考虑将Junit断言用于这项简单的工作。因此，不仅将JUNIT用于运行测试，还用于应用程序的主要流程。

这是好的做法，还有什么选择？

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丑疤怪 2025-02-10 21:22:46

对于您需要将vaadin的转换器或验证器绑定到单个字段/值对的情况下，我已经写了 fieldBinder 实用程序类，可以在vaadin的目录中找到，并添加为对项目的Maven依赖性。

https://vaadin.com/directory/component/component/fieldbinds/fieldbinder

        // Binder with integer
    FieldBinder<Integer> integerFieldBinder = new FieldBinder<>();
    TextField integerField = new TextField("Input number");

    // Text field with Integer value Converter and Validator
    // Demoing how to detect if value is valid and how to get it from FieldBinding
    FieldBinding<Integer> integerBinding = integerFieldBinder.forField(integerField)
            .withConverter(new StringToIntegerConverter("This is not a number"))
            .withValidator(new IntegerRangeValidator("Give a number between 5 and 10",5,10))
            .bind(integerValue);

For such use cases where you need to bind Vaadin's Converters or Validators to a single field / value pair without a Bean being involved I have written FieldBinder utility class, which can be found in Vaadin's Directory and added as maven dependency to your project.

https://vaadin.com/directory/component/fieldbinder

        // Binder with integer
    FieldBinder<Integer> integerFieldBinder = new FieldBinder<>();
    TextField integerField = new TextField("Input number");

    // Text field with Integer value Converter and Validator
    // Demoing how to detect if value is valid and how to get it from FieldBinding
    FieldBinding<Integer> integerBinding = integerFieldBinder.forField(integerField)
            .withConverter(new StringToIntegerConverter("This is not a number"))
            .withValidator(new IntegerRangeValidator("Give a number between 5 and 10",5,10))
            .bind(integerValue);

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滴情不沾 2025-02-10 21:22:46

这种好习惯

不是 junit 是否要在生产代码中使用

我只需要简单的UI元素验证而无需备份豆。
有什么选择

仍然可以使用绑定的API，只忽略Getters/setters：

new Binder<>().forField(new TextField())
  .withValidator(...)
  .bind(o -> null, (o, o2) -> {});

Is this good practice

I don't think junit is meant to be used in a production code

I just need simple UI element validation without backing beans.
what alternatives are there

I believe you can still use the binding API, just ignore getters/setters:

new Binder<>().forField(new TextField())
  .withValidator(...)
  .bind(o -> null, (o, o2) -> {});

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回眸一笑 2025-02-10 21:22:46

虽然binder需要“ bean”不必是
一个完全抽出的东西。您还可以使用两个功能绑定（a
valueProvider和setter）。因此，您基本上可以使用任何
容器您喜欢作为“ bean”。例如a 地图或atomicInteger（您
必须具有从中读取值并回写值的手段）。

def tf = new TextField("Answer to all questions of the universe").tap {
    setWidthFull()
}

def binder = new Binder<Map>().tap{
    forField(tf)
        .asRequired("A value is mandatory")
        .withNullRepresentation("")
        .withConverter(new StringToIntegerConverter("Only numbers are allowed"))
        .withValidator(new IntegerRangeValidator("Must be 42", 42, 42))
        .bind( // XXX
            { m -> m.value },
            { m, v -> m.value = v }
        )

    setBean([:])
}

add(tf)
add(new Button("Save", {
    Notification.show(binder.valid ? "Saved ${binder.bean}" : "Please fix the errors first")
}))

While a "bean" is needed for the Binder it does not have to be
a something fully drawn out. You can also bind with two functions (a
ValueProvider and a Setter). With this you can basically use any
container you like as "bean". E.g. a Map or an AtomicInteger (you
must have means to read a value from it and write a value back).

def tf = new TextField("Answer to all questions of the universe").tap {
    setWidthFull()
}

def binder = new Binder<Map>().tap{
    forField(tf)
        .asRequired("A value is mandatory")
        .withNullRepresentation("")
        .withConverter(new StringToIntegerConverter("Only numbers are allowed"))
        .withValidator(new IntegerRangeValidator("Must be 42", 42, 42))
        .bind( // XXX
            { m -> m.value },
            { m, v -> m.value = v }
        )

    setBean([:])
}

add(tf)
add(new Button("Save", {
    Notification.show(binder.valid ? "Saved ${binder.bean}" : "Please fix the errors first")
}))

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