DonorManagementTests 没有默认构造函数 (nunit/moq)

Question

我将最小起订量与 nunit 一起使用，我的测试没有给出失败或通过的结果。它说它没有默认构造函数。我怀疑我没有正确地将我的接口注入构造函数。

DonorManagementTests

[TestFixture]
public class DonorManagementTests
{
    private readonly Mock<IValidation> _mockValidation;
    private readonly DonorManagement _donorManagement;

    public DonorManagementTests(IValidation validation)
    {
        _mockValidation = new Mock<IValidation>();
        _donorManagement = new DonorManagement(_mockValidation.Object);

    }

    [Test, Description("View correct gift aid to two decimal places")]
    public void DonorViewGiftAid()
    {
        const int donation = 20;
        _mockValidation.Setup(x => x.ValidateDonation(donation)).Returns(20.00m);
        var res = _donorManagement.GiftAidAmount(donation);
        Assert.IsInstanceOf(typeof (decimal), res);
        _mockValidation.Verify(x => x.ValidateDonation(donation), Times.Once);
    }
}

捐助者管理

public class DonorManagement : IDonor
{
    private readonly IValidation _validation;

    public DonorManagement(IValidation validation)
    {
        _validation = validation;
    }

    public virtual decimal GiftAidAmount(decimal donationAmount)
    {
        const decimal gaRatio = 17.5m / (100 - 17.5m);
        return _validation.ValidateDonation(donationAmount) * gaRatio;
    }
}

有什么想法需要更改我的代码吗？

Answer 1

NUnit 文档 (http://www.nunit.org/index.php?p=testFixture&r=2.5) 说：

非参数化装置必须具有默认构造函数。
参数化装置必须具有与提供的参数相匹配的构造函数。

Answer 2

你的测试 class 必须有一个默认的 C'tor。

将您的测试 class 更改为：

[TestFixture]
public class DonorManagementTests
{
    private Mock<IValidation> _mockValidation;
    private DonorManagement _donorManagement;

    [SetUp]
    public TestInit()
    {
        _mockValidation = new Mock<IValidation>();
        _donorManagement = new DonorManagement(_mockValidation.Object);

    }

    [Test, Description("View correct gift aid to two decimal places")]
    public void DonorViewGiftAid()
    {
        const int donation = 20;
        _mockValidation.Setup(x => x.ValidateDonation(donation)).Returns(20.00m);
        var res = _donorManagement.GiftAidAmount(donation);
        Assert.IsInstanceOf(typeof (decimal), res);
        _mockValidation.Verify(x => x.ValidateDonation(donation), Times.Once);
    }
}

现在每个测试都将被隔离，您将能够执行测试。

DonorManagementTests 没有默认构造函数 (nunit/moq)

DonorManagementTests does not have a default constructor (nunit/moq)

c#

nunit

unit-testing

dependency-injection

moq