如何示例使用AutoFixture与NSubstitute

问题描述

我用NSubstitute了很多。我喜欢它。

我只是在寻找到AutoFixture。这似乎太好了！

我看到 AutoFixture的NSubstitute 并看到起订量的几个例子就如何使用此功能。

不过，我似乎无法把它翻译成NSubstitute。

我尝试这样做：

  VAR夹具=新灯（）自定义（新AutoNSubstituteCustomization（））。
变种addDest = Substitute.For＆其中; IPerson＆GT;（）;
 

使用：

 公共接口IPersonEntity
{
   INT ID {获得;组; }
   字符串名字{获得;组;}
   字符串名字{获得;组;}
   日期时间DATEOFBIRTH {获得;组; }
   焦炭性别{获得;组; }
}
 

和我得到一个对象，但没有属性的填充（一种AutoFixture点的）。

我也试过：

  VAR夹具=新灯（）自定义（新AutoNSubstituteCustomization（））。
VAR的结果= fixture.Create＆LT; IPersonEntity＆GT;（）;
 

这也给了我一个对象没有填充性能。 （请注意，如果我做了上述与 PersonEntity 类，则属性都填充。）

我相信，有一种方法，使这项工作，但我似乎无法找到它。

因此， IPersonEntity 接口上面，没有人知道如何使用AutoFixture和NSubstitute给我一个人口稠密IPersonEntity对象？ P>

解决方案

而不是定制的灯具实例的 AutoNSubstituteCustomization 您可以使用下面的定制：

  VAR夹具=新灯（）。自定义（
    新AutoPopulatedNSubstitutePropertiesCustomization（））;

VAR的结果= fixture.Create＆LT; IPersonEntity＆GT;（）;
//  - ＆GT;所有属性现在应该填充。
 

在 AutoPopulatedNSubstitutePropertiesCustomization 定义为：

 内部类AutoPopulatedNSubstitutePropertiesCustomization
    ：ICustomization
{
    公共无效自定义（IFixture夹具）
    {
        fixture.ResidueCollectors.Add（
            新的后处理（
                新NSubstituteBuilder（
                    新MethodInvoker（
                        新NSubstituteMethodQuery（））），
                新AutoPropertiesCommand（
                    新PropertiesOnlySpecification（））））;
    }

    私有类PropertiesOnlySpecification：IRequestSpecification
    {
        公共BOOL IsSatisfiedBy（对象请求）
        {
            返回请求的PropertyInfo;
        }
    }
}
 

所不同的 AutoNSubstituteCustomization 是上面的定制也是装饰与后处理实例来自动设置为请求类型的所有公共属性的值。

引用

上面的解决方案是由以下博客文章马克塞曼的启发：

• 如何配置AutoMoq设置所有属性
• 如何自动AutoMoq填充性能

I use NSubstitute a lot. And I love it.

I am just looking into AutoFixture. It seems great!

I have seen AutoFixture for NSubstitute and seen a few examples in Moq on how to use this feature.

But I can't seem to translate it into NSubstitute.

I tried this:

var fixture = new Fixture().Customize(new AutoNSubstituteCustomization());
var addDest = Substitute.For<IPerson>();

Using:

public interface IPersonEntity
{
   int ID { get; set; }
   string FirstName { get; set;}
   string LastName { get; set;}
   DateTime DateOfBirth { get; set; }
   char Gender { get; set; }
}

And I get an object, but none of the properties are populated (kind of the point of AutoFixture).

I also tried:

var fixture = new Fixture().Customize(new AutoNSubstituteCustomization());
var result = fixture.Create<IPersonEntity>();

That also gave me an object with no populated properties. (Note if I do the above with a PersonEntity class, then the properties are all populated.)

I am sure that there is a way to make this work, but I can't seem to find it.

So, given my IPersonEntity interface above, does anyone know how to use AutoFixture and NSubstitute to give me a populated IPersonEntity object?

解决方案

Instead of customizing the Fixture instance with the AutoNSubstituteCustomization you may use the customization below:

var fixture = new Fixture().Customize(
    new AutoPopulatedNSubstitutePropertiesCustomization());

var result = fixture.Create<IPersonEntity>();
// -> All properties should be populated now.

The AutoPopulatedNSubstitutePropertiesCustomization is defined as:

internal class AutoPopulatedNSubstitutePropertiesCustomization
    : ICustomization
{
    public void Customize(IFixture fixture)
    {
        fixture.ResidueCollectors.Add(
            new Postprocessor(
                new NSubstituteBuilder(
                    new MethodInvoker(
                        new NSubstituteMethodQuery())),
                new AutoPropertiesCommand(
                    new PropertiesOnlySpecification())));
    }

    private class PropertiesOnlySpecification : IRequestSpecification
    {
        public bool IsSatisfiedBy(object request)
        {
            return request is PropertyInfo;
        }
    }
}

The difference with the AutoNSubstituteCustomization is that the above customization is also decorated with a Postprocessor instance to automatically set values for all the public properties of the requested type.

References:

The above solution is inspired by the following blog articles by Mark Seemann:

• How to configure AutoMoq to set up all properties
• How to automatically populate properties with AutoMoq

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