This project uses Source Generation to generate an interface and a Proxy class for classes. This makes it possible to wrap external classes which do not have an interface, in a Proxy class which makes it easier to Mock and use DI.
Get Started
$ dotnet add package ProxyInterfaceGeneratorReadme
Usage
Given: an external existing class which does not implement an interface
public sealed class Person
{
public string Name { get; set; }
public string HelloWorld(string name)
{
return $"Hello {name} !";
}
}
Create a partial interface
And annotate this with ProxyInterfaceGenerator.Proxy[...] and with the Type which needs to be wrapped:
[ProxyInterfaceGenerator.Proxy(typeof(ProxyInterfaceConsumer.Person))]
public partial interface IPerson
{
}
When the code is compiled, this source generator creates the following two items:
1. An additional partial interface Which defines the same properties and methods as in the external class.
public partial interface IPerson
{
string Name { get; set; }
string HelloWorld(string name);
}
2. A Proxy class Which takes the external class in the constructor and wraps all properties and methods.
public class PersonProxy : IPerson
{
public Person _Instance { get; }
public PersonProxy(Person instance)
{
_Instance = instance;
}
public string Name { get => _Instance.Name; set => _Instance.Name = value; }
public string HelloWorld(string name)
{
string name_ = name;
var result_19479959 = _Instance.HelloWorld(name_);
return result_19479959;
}
}
Use it
IPerson p = new PersonProxy(new Person());
p.Name = "test";
p.HelloWorld("stef");