xUnit Parameterized Test example using Fizz Buzz algorithm

FizzBuzzParameterizedTestExample.cs

using Xunit;
using System.Collections.Generic;

public static class FizzBuzz
{
    public static string GetOutput(int number)
    {
        return number switch
        {
            _ when number % 15 == 0 => "FizzBuzz",
            _ when number % 3 == 0 => "Fizz",
            _ when number % 5 == 0 => "Buzz",
            _ => number.ToString()
        };
    }
}

public class FizzBuzzTests
{
    // InlineData Test
    [Theory]
    [InlineData(1, "1")]
    [InlineData(2, "2")]
    [InlineData(3, "Fizz")]
    [InlineData(4, "4")]
    [InlineData(5, "Buzz")]
    [InlineData(6, "Fizz")]
    [InlineData(10, "Buzz")]
    [InlineData(15, "FizzBuzz")]
    [InlineData(30, "FizzBuzz")]
    [InlineData(31, "31")]
    public void GetOutput_ShouldReturnExpectedResult_Inline(int number, string expected)
    {
        // Act
        var result = FizzBuzz.GetOutput(number);

        // Assert
        Assert.Equal(expected, result);
    }

    // MemberData Test
    // Use MemberData when we want to share test data across multiple test methods or classes.
    public static TheoryData<int, string> FizzBuzzData => new TheoryData<int, string>
    {
        { 1, "1" },
        { 2, "2" },
        { 3, "Fizz" },
        { 4, "4" },
        { 5, "Buzz" },
        { 6, "Fizz" },
        { 10, "Buzz" },
        { 15, "FizzBuzz" },
        { 30, "FizzBuzz" },
        { 31, "31" }
    };

    [Theory]
    [MemberData(nameof(FizzBuzzData))]
    public void GetOutput_ShouldReturnExpectedResult_MemberData(int number, string expected)
    {
        // Act
        var result = FizzBuzz.GetOutput(number);

        // Assert
        Assert.Equal(expected, result);
    }
}