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类包含类型为Person和name：SamplePerson的属性。

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类型的模拟变量赋值给特性，类型为AddressBook类型的模拟变量。

这个是可能的吗？

Answer 1

IAddressBook.SamplePerson属性返回Person实现，而不是IPerson接口，因此返回IPerson的尝试将无法工作。

要么模拟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);