design-patterns - What is the correct name for interface with multiple callbacks?

Question

Given the nature of the following, what is the best name for the interface? and if applicable which design pattern is this?

public interface ITestEvent??? {   // Handler / Listener / Observer / Emitter / ???

    void OnBeginTesting(ITestContext context);
    void OnException(Exception ex);
    void OnEndTesting();

}

public class MyTestEvent??? : ITestEvent { ... }

Tester.Add???(new MyTestEvent???());

Answer 1

最初我觉得它是Command，你正在封装一个测试请求，并使用 Tester.Add() 调用/排队它。

但是经过您的反馈，我意识到您只是传递行为；所以我同意@kabram 的观点，这是Delegate.