Xunit versus stand Visual Studio Unit Testing

Question

Good evening.

 

I recently started to acquaint myself of unit testing, on itself I believe this to be an excellent practice, though I hardly get an opportunity to hone my skills further.

 

Recently I was asked to study Xunit for a certain project. I was fairly enthusiastic about it, and started reading up on it.

 

One thing I didn't found much about is how Xunit compares to say the stanard unit testing framework already existing "out of the box" in Visual Studio. I was wondering if anybody had a view on this.

 

Also... When creating a new project in Visual Studio, you get the possibilty of automatically creating a seperating "test project" for each of the given standard projects you can create. I was wondering if is a good practice, and therefore a practice I should also maintain when using xunit.