此测试是否正确使用AutoFixture和Moq？

Question

此测试是否正确使用AutoFixture和Moq？它是尽可能简明扼要地写的吗？正如预期的那样,测试失败,并在写完正确的实现后通过.

[Fact]
public void CustomerPropertyIsCorrect()
{
    var fixture = new AutoMoqFixture();

    var expected = fixture.Create<CardHolderCustomer>();
    var builderMock = fixture
        .Freeze<Mock<ICustomerAdapter>>()
        .Setup(x => x.BuildCustomer()).Returns(expected);

    var sut = fixture.Create<CardHolderViewModel>();
    var actual = sut.Customer;

    Assert.Equal(expected, actual);
}

Answer 1

它看起来不错!但是,您也可以使用 xUnit.net 扩展名以声明方式使用它.

假设测试中使用的类型定义为:

public class CardHolderCustomer
{
}

public interface ICustomerAdapter
{
    CardHolderCustomer BuildCustomer();
}

public class CardHolderViewModel
{
    private readonly ICustomerAdapter adapter;

    public CardHolderViewModel(ICustomerAdapter adapter)
    {
        if (adapter == null)
            throw new ArgumentNullException("adapter");
        this.adapter = adapter;
    }

    public CardHolderCustomer Customer
    {
        get
        {
            return this.adapter.BuildCustomer();
        }
    }
}

原始测试可以写成:

[Theory, DomainTestConventions]
public void CustomerPropertyIsCorrect2(
    CardHolderCustomer expected,
    [Frozen]Mock<ICustomerAdapter> builderStub,
    CardHolderViewModel sut)
{
    builderStub
        .Setup(x => x.BuildCustomer())
        .Returns(expected);

    var actual = sut.Customer;

    Assert.Equal(expected, actual);
}

的DomainTestConventionsAttribute定义为:

internal class DomainTestConventionsAttribute : AutoDataAttribute
{
    internal DomainTestConventionsAttribute()
        :base(new Fixture().Customize(new DomainTestConventions()))
    {
    }
}

的DomainTestConventions定义为:

internal class DomainTestConventions : CompositeCustomization
{
    internal DomainTestConventions()
        :base(new AutoMoqCustomization())
    {
    }
}

请注意,DomainTestConventions派生的CompositeCustomization基本上意味着您可以创建更多自定义项并将它们作为参数添加到基础构造函数中.

您还可以阅读:

• AutoFixture Customizations的顺序很重要
• AutoFixture的AutoData理论
• 使用AutoFixture Customizations保持您的单元测试DRY
• AutoFixture,xUnit.net和Auto Mocking

希望有所帮助.