using System;
using System.Xml.Serialization;
using System.IO;
namespace Mailer {
public class ClientConfiguration {
public virtual bool Save(string fileName) {
XmlSerializer serializer = new XmlSerializer(typeof(ClientConfiguration));
using (StreamWriter writer = new StreamWriter(fileName)) {
serializer.Serialize(writer,this);
}
return true;
}
}
}
在上面的代码中,我想存根/模拟serializer.Serialize方法以确保调用该方法.我用moq和NMock尝试了很多方法但是失败了.
请帮助我存根/模拟对序列化程序的调用.
解决方法
除非您使用Typemock Isolator或Moles,否则不能替换使用new关键字在内部创建的任何内容.
您需要首先从XmlSerializer中提取接口,然后将其注入到类中.
例如,您可以介绍此接口：
public interface IXmlSerializer
{
public void Serialize(Stream stream,object o);
}
将它注入您的Mailer类中,如下所示：
public class ClientConfiguration
{
private readonly IXmlSerializer serializer;
public ClientConfiguration(IXmlSerializer serializer)
{
if (serializer == null)
{
throw new ArgumentNullException("serializer");
}
this.serializer = serializer;
}
public virtual bool Save(string fileName)
{
using (StreamWriter writer = new StreamWriter(fileName))
{
this.serializer.Serialize(writer,this);
}
return true;
}
}
现在您可以将模拟注入到类中：
var mock = new Mock<IXmlSerializer>(); var sut = new ClientConfiguration(mock.Object);
上面的例子使用Moq.
