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

Question

我正在将moq与nunit一起使用，而我的测试并没有使我失败或通过。 它说它没有默认的构造函数。 我怀疑我在将接口注入构造函数中做不到正确的事情。

捐助者管理测试

[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代码吗？

Answer 1

您的测试课程必须具有默认的C'tor。

将您的测试类别更改为：

[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，每个测试将被隔离，您将能够执行测试。

Answer 2

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

• 非参数化灯具必须具有默认构造函数。
• 参数化的灯具必须具有与提供的参数匹配的构造函数。