I am using .Net 6.0

I have a file in my project : Program.cs, containing registration and mapping code for controllers and services.

like:

builder.Services.AddControllers();
builder.Services.AddServices();

Now, I want to write, test cases for these lines of code, but there is no any method to call from the [Fact] method, inside the program.cs. Not even the main() method.

Can somebody please put some light on how can we cover this code with our test cases ?

CodePudding user response：

Followed below steps to complete my code coverage:

1. Created an extension method for WebApplicationBuilder within a new static class.
2. Moved the testable code from Program.cs to the extension method.
3. Wrote the test cases for the extension method.

CodePudding user response：

When you create a new web application in VS2022, there's a checkbox "Do not use top-level statements". If you leave it unchecked, you get what you're seeing in Program.cs. If you do check it, you'll get:

namespace WebApplication1
{
    public class Program
    {
        public static void Main(string[] args)
        {
        /* Everything exactly as you see in your Program.cs, but indented */
        }
    }
}

So if you do envisage wanting to call this method in tests (slightly odd, but okay), I'd recommend using this option rather than creating a separate method to call from Program.cs.

Even if you do get that checkbox option wrong during project creation, you should hopefully see that it's not tricky to transform between the two forms, using the above as a template (and adjusting namespace name)