Why my Application keep calling the Class Constructor which has service Provider Parameter

Question

I'm having issues with Constructor called by default

below is my class

public class Repo : BaseRepo
{        
    public Repo :base() { }

    // Added Below Constructor for Unit Testing Purpose to pass Mock Service 
    // Provider to base Repo before it instantiates Other Services. 

    public Repo(IServiceProvider serviceProvider) : base(serviceProvider) { }
}    

When even I run my application outside of unit test project, the Constructor with service Provider Parameter is getting Called, is there a way to run this constructor only for unit test project.

I tried added symbols, but it did not work

Answer 1

By default DI is choosing constructor with maximum number of parameters it can resolve.

Try to apply attribute [Microsoft.Extensions.DependencyInjection.ActivatorUtilitiesConstructorAttribute] to the parameterless constructor, DI should pick it up instead.