c# - NSubstitute:模拟属性

Question

我在单元测试中创建了 Person 和 AddressBook 类的替代品。AddressBook 类包含 Person 类型和名称的属性:SamplePerson。

public interface IAddressBook
{
    Person SamplePerson { get; set; }
}

public class AddressBook : IAddressBook
{
    public Person SamplePerson { get; set; }

    public AddressBook(Person samplePerson)
    {
        SamplePerson = samplePerson;
    }
}

public interface IPerson
{
    string GetName(string name);
}

public class Person : IPerson
{
    public string GetName(string name)
    {
        return name;
    }
}

public void TestMethod1()
{
    var personMock = Substitute.For<IPerson>();
    var addressBookMock = Substitute.For<IAddressBook>();

    addressBookMock.SamplePerson.Returns(personMock); //not working
    addressBookMock.SamplePerson = personMock; //not working
    addressBookMock.SamplePerson = (Person)personMock; //not working

    Assert.AreEqual(1, 1);
}

我想将 Person 类型的模拟变量分配给 AddressBook 类型的模拟变量的 propeties。

这可能吗？

Answer 1

IAddressBook.SamplePerson 属性返回 Person 实现而不是 IPerson 接口(interface)，因此您返回 IPerson 的尝试将不工作。

模拟Person类

var personMock = Substitute.For<Person>();
var addressBookMock = Substitute.For<IAddressBook>();
addressBookMock.SamplePerson.Returns(personMock);

或者返回一个实际的实例。

var person = new Person();
var addressBookMock = Substitute.For<IAddressBook>();
addressBookMock.SamplePerson.Returns(person);