How do I put new List {1} in an NUNIT TestCase?

Question

I have the method:

public static int Add(List numbers)
    {
        if (numbers == null || numbers.Count == 0)
            return 0;

        if          


        

Answer 1

Just create the list inside the method instead, like this:

public void Add_WithOneNumber_ReturnsNumber()
{
    var result = CalculatorLibrary.CalculatorFunctions.Add(new List<int>{1});

    Assert.AreEqual(1, result);
}

Answer 2

You can't use objects only compile-time constants in data attributes. To avoid using reflection, which I find to be extremely unreadable and not at all appropriate for a test which is meant to formally describe behavior as clearly as possible, here's what I do:

    [Test]
    public void Test_Case_One()
    {
        AssertCurrency(INPUT, EXPECTED);
    }

    [Test]
    public void Test_Case_Two()
    {
        AssertCurrency(INPUT, EXPECTED);
    }

    private void AssertScenario(int input, int expected)
    {
        Assert.AreEqual(expected, input);
    }

It's a few more lines, but that's only because I want clear test output. You could just as easily put them in one [Test] if you are looking for something more concise.