Question

我正在尝试测试类的行为，当它通过委托工厂传递一个存根对象时。我做了一个测试版本，其中所有类的依赖项（工厂除外）都作为Mock对象传递，它按预期工作。现在我尝试使用AutoMock让容器自动创建模拟。

我在使用mock.Provide（）在ClassUnderTest的构造函数中传递委托工厂的具体值时出现问题。（如this comment建议）

我正在测试的课程：

public ClassUnderTest
{
 private readonly firstField;
 private readonly Func<string, ISecondField, IThirdField, IResultField> resultFieldFactory;
 private int someCounter = -1;

 public ClassUnderTest(IFirstField firstField, Func<string, ISecondField, IThirdField, IResultField> resultFieldFactory )
 {
  this.firstField = firstField;
  this.resultFieldFactory= resultFieldFactory;
 }

 public methodToTest()
 {
  IResultField resultField = resultFieldFactory(someString, secondFieldValue, thirdFieldValue);
  resultField.AddToList();
 }
}

业务逻辑模块：

public class BusinessLogicModule: Module
{
//some other things  that work

builder.RegisterType<ClassUnderTest>().As<IClassUnderTest>();
builder.RegisterType<SecondField>().As<ISecondField>();
builder.RegisterType<ThirdField>().As<IThirdField>();
builder.RegisterType<ResultField>().As<IResultField>();

}

测试类：

[TestClass]
public class TestClass()
{
 private IFirstField firstField;
 private Func<string, ISecondField, IThirdField, IResultField> funcToTriggerIResultFieldFactory;


 [TestInitialize]  
 public void Setup()
 {
  this.firstField= Resolve<IFirstField>();
  this.secondField= Resolve<ISecondField>();
  this.funcToTriggerIResultFieldFactory = Resolve<Func<string, ISecondField, IThirdField, IResultField>>();
 }


 [TestMethod]
 public void testMethodWithAutoMock()
 {
  using (var automock = AutoMock.GetLoose())
  {
    //trying to setup the SUT to get passed a "concrete" object
    autoMock.Provide(funcToTriggerIResultFieldFactory(stringValue, secondFieldValue, thirdFieldValue)); 

    var sut = autoMock.Create<IClassUnderTest>;

    sut.MethodToTest();
    //asserts
   }
 }

}

如果我做错了什么迹象，我将不胜感激。我错过了什么？怎么可能修好？这是一个简单的语法修复还是我的测试方法有问题？

提前感谢您的时间。

Answer 1

在您的示例中，当您调用autoMock.Provide()时，您没有传入工厂函数，但是您正在调用工厂函数并传入结果（IResultField）。要解决此问题，请致电

autoMock.Provide(funcToTriggerIResultFieldFactory);

Here是使用自动模拟容器注册函数的完整示例。

使用mock.Provide（）来设置在SUT构造函数中使用的委托工厂

1 个答案: