File based C# application

Starting with dotnet 10 (preview 4), you can use the new file-based C# application feature to run tests in a more straightforward way.

Using File-Based C# Application with TUnit

To use TUnit with a file-based C# application, you can follow these steps:

Create a new C# file: Create a new file with a .cs extension, for example, Program.cs.
Add TUnit to your project: You can add TUnit as a package reference in your file. At the top of your Program.cs, add the following line:
```
#:package TUnit@0.*
```
Alternatively, you can specify a specific version:
```
#:package TUnit@0.25.0
```

Write your tests: You can write your tests in the same way you would in a regular C# project. For example:

#:package TUnit@0.*

using TUnit;
public class Tests
{
    [Test]
    public void Basic()
    {
        Console.WriteLine("This is a basic test");
    }

    [Test]
    [Arguments(1, 2, 3)]
    [Arguments(2, 3, 5)]
    public async Task DataDrivenArguments(int a, int b, int c)
    {
        Console.WriteLine("This one can accept arguments from an attribute");
        var result = a + b;
        await Assert.That(result).IsEqualTo(c);
    }

}

4 Run your tests: You can run your tests by executing the script in F# Interactive. The results will be printed to the console. To run the script, you can use the following command

dotnet run Program.cs

If you need to convert the file based application to a regular C# project, you can run the following command:

dotnet project convert Program.cs

Using File-Based C# Application with TUnit​

Using File-Based C# Application with TUnit