Feature: Double down on file based C# projects

[fubar-coder]

I just saw the PR #2519 and there are several things that would improve the experience:

1. Add a <Using Include="TUnit" /> to a TUnit-provided *.props file
2. Allow the specification of [Test] functions in the "global" scope

This would allow the usage of TUnit as follows:

#:package TUnit@0.*

[Test]
void Basic()
{
    Console.WriteLine("This is a basic test");
}

[Test]
[Arguments(1, 2, 3)]
[Arguments(2, 3, 5)]
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);
}

I do not know whether 2) is possible, but 1) should.

[thomhurst]

@licon4812 You able to take a look at this one?

[licon4812]

For 2 to work, TUnit needs to be able to run tests as a top-level statement.

Eg, I made this dotnet 9 console application with top-level statements and out of the box, the tests cannot be ran or discovered.

using TUnit;

[Test]
void Basic()
{
    Console.WriteLine("This is a basic test");
}

[Test]
[Arguments(1, 2, 3)]
[Arguments(2, 3, 5)]
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);
}

As for point 1, msprops files should still work with dotnet single file apps. I will investigate

[licon4812]

@fubar-coder I was able to create a Directory.Build.props file next to the single-file.cs. And it worked correctly.

Directory.Build.props

<Project>
    <ItemGroup>
      <PackageReference Include="TUnit" Version="*" />
    </ItemGroup>
</Project>

cs file

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);
    }
}

I will update the docs to illustrate this

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