.net - 如何使用 Moq 模拟 ISerializable 类？

Question

我对 Moq 完全陌生，现在正在尝试为System.Reflection.Assembly类(class)。我正在使用这段代码:

var mockAssembly = new Mock<Assembly>(); 
mockAssembly.Setup( x => x.GetTypes() ).Returns( new Type[] { 
    typeof( Type1 ), 
    typeof( Type2 ) 
} );

但是当我运行测试时，我得到下一个异常:

System.ArgumentException : The type System.Reflection.Assembly 
implements ISerializable, but failed to provide a deserialization 
constructor 
Stack Trace: 
   at 
Castle.DynamicProxy.Generators.BaseProxyGenerator.VerifyIfBaseImplementsGet­ObjectData(Type 
baseType) 
   at 
Castle.DynamicProxy.Generators.ClassProxyGenerator.GenerateCode(Type[] 
interfaces, ProxyGenerationOptions options) 
   at Castle.DynamicProxy.DefaultProxyBuilder.CreateClassProxy(Type 
classToProxy, Type[] additionalInterfacesToProxy, 
ProxyGenerationOptions options) 
   at Castle.DynamicProxy.ProxyGenerator.CreateClassProxy(Type 
classToProxy, Type[] additionalInterfacesToProxy, 
ProxyGenerationOptions options, Object[] constructorArguments, 
IInterceptor[] interceptors) 
   at Moq.Proxy.CastleProxyFactory.CreateProxy[T](ICallInterceptor 
interceptor, Type[] interfaces, Object[] arguments) 
   at Moq.Mock`1.<InitializeInstance>b__0() 
   at Moq.PexProtector.Invoke(Action action) 
   at Moq.Mock`1.InitializeInstance() 
   at Moq.Mock`1.OnGetObject() 
   at Moq.Mock`1.get_Object() 

你能推荐我模拟的正确方法ISerializable类(class)
(如 System.Reflection.Assembly )与最小起订量。

提前致谢!

Answer 1

System.Reflection.Assembly 是抽象的，因此您不能创建它的新实例。但是，您可以创建一个测试类并模拟它。

例子:

[测试方法]
公共(public)无效 TestSomethingThatNeedsAMockAssembly()
{
字符串标题=“标题”；
var mockAssembly = new Mock();
mockAssembly.Setup(a => a.GetCustomAttributes(It.Is(s => s == Type.GetType("System.Reflection.AssemblyTitleAttribute")), It.IsAny())).Returns(new System.Attribute[ ] { 新的 AssemblyTitleAttribute(title) } );
var c = new ClassThatTakesAssemblyAndParsesIt(mockAssembly.Object); Assert.IsTrue(c.AssemblyTitle == title); //etc } public class TestAssembly : Assembly { public TestAssembly() { //could probably do something interesting here } }