C# – Default method implementations and constants in interfaces

Starting in C# 7, you can add default method implementations (and constants) to interfaces, like this: This outputs the following: Microsoft’s stated purpose for this feature is that it allows you add methods to an interface without breaking existing implementing classes. That’s nice, but it weakens the concept of interfaces (forcing implementers to adhere to … Read more C# – Default method implementations and constants in interfaces

C# – How to check if a type has a default constructor

A default constructor is a constructor that doesn’t have parameters. Therefore, to check if a type has a default constructor, you can use reflection to loop through the constructors and see if there are any with no parameters, like this: In this article I’ll show an example of loading types that implement a specific interface … Read more C# – How to check if a type has a default constructor

C# – How to unit test async methods

Let’s say you have the following async method you want to test: Here’s how to unit test this: This is awaiting the method you’re testing. To await it, you must make the unit test method return async Task. This example is a bit simplistic. In the real world when you are working with async methods, … Read more C# – How to unit test async methods