[英]Unit testing a class that inherits from an abstract class
My problem is that I want to stub a property in my abstract class, because my class in test uses that property. 我的问题是我想在我的抽象类中存根一个属性,因为我在测试中的类使用了该属性。 I'm currently using latest version of Moq.
我目前正在使用最新版本的Moq。
My abstract class looks like this: 我的抽象类看起来像这样:
public abstract class BaseService
{
protected IDrawingSystemUow Uow { get; set; }
}
And my class in test looks like this: 我的测试课看起来像这样:
public class UserService : BaseService, IUserService
{
public bool UserExists(Model model)
{
var user = this.Uow.Users.Find(model.Id);
if(user == null) { return false; }
reurn true;
}
}
I can't figure out how I can stub the Uow
property. 我无法弄清楚如何存根
Uow
属性。 Does anybody have any clue? 有人有任何线索吗? Or is my design that bad that I need to move to
Uow
property to my class in test? 或者我的设计是不是很糟糕,我需要在测试
Uow
属性转移到我的班级?
Your current setup won't work for one simple reason - Uow
property is non-overridable and Moq's job is done at this point. 您当前的设置不会出于一个简单的原因 -
Uow
属性是不可Uow
,Moq的工作就在此时完成。 Cannot override, cannot mock . 无法覆盖,无法模拟 。
Easiest solution is to simply make that property overridable. 最简单的解决方案是简单地使该属性可以覆盖。 Change your base class definition to:
将基类定义更改为:
public abstract class BaseService
{
protected virtual IDrawingSystemUow Uow { get; set; }
}
Now you can use Moq's protected feature (this requires you to include using Moq.Protected
namespace in your test class): 现在您可以使用Moq的受保护功能(这要求您在测试类中
using Moq.Protected
命名空间):
// at the top of the file
using Moq.Protected;
// ...
var drawingSystemStub = new Mock<IDrawingSystemUow>();
var testedClass = new Mock<UserService>();
testedClass
.Protected()
.Setup<IDrawingSystemUow>("Uow")
.Returns(drawingSystemStub.Object);
// setup drawingSystemStub as any other stub
// exercise test
var result = testedClass.Object.UserExists(...);
I think in your case it's pretty straightforward. 我认为在你的情况下它非常简单。 You just don't mock the
Uow
property but the IDrawingSystemUow
service. 你只是不模仿
Uow
属性,而是IDrawingSystemUow
服务。 So you can create a mock of IDrawingSystemUow
, assign it to the instance of UserService
via the Uow
property and then run the tests (eg of the UserExists
method). 因此,您可以创建
IDrawingSystemUow
的模拟,通过Uow
属性将其分配给UserService
的实例,然后运行测试(例如UserExists
方法)。
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