Some asp.net fizz buzz testing

using System;
using System.Collections.Generic;
using PartA.Models;
using Xunit;

namespace PartA.Tests
{
public class FizzBuzzTests
{
private readonly FizzBuzz _fizzBuzz;

    public FizzBuzzTests()
    {
        _fizzBuzz = new FizzBuzz();
    }

    // 1st test - Returns list 1 to 100[cite: 3]
    [Fact]
    public void GetList_ReturnsList1To100_WhenNoParametersPassed()
    {
        // ACT
        List<string> result = _fizzBuzz.getList();

        // ASSERT
        Assert.Equal(100, result.Count);
        Assert.Equal("1", result[0]);
        Assert.Equal("Buzz", result[99]); // Number 100
    }

    // 2nd test - Fizz for 3 multiples[cite: 3]
    [Fact]
    public void GetList_ReturnsFizz_ForMultiplesOfThree()
    {
        // ACT
        List<string> result = _fizzBuzz.getList();

        // ASSERT
        Assert.Equal("Fizz", result[2]); // Index 2 represents number 3
        Assert.Equal("Fizz", result[8]); // Index 8 represents number 9
    }

    // 3rd test - Buzz for 5 multiples[cite: 3]
    [Fact]
    public void GetList_ReturnsBuzz_ForMultiplesOfFive()
    {
        // ACT
        List<string> result = _fizzBuzz.getList();

        // ASSERT
        Assert.Equal("Buzz", result[4]); // Index 4 represents number 5
        Assert.Equal("Buzz", result[9]); // Index 9 represents number 10
    }

    // 4th test - FizzBuzz for 3&5[cite: 3]
    [Fact]
    public void GetList_ReturnsFizzBuzz_ForMultiplesOfThreeAndFive()
    {
        // ACT
        List<string> result = _fizzBuzz.getList();

        // ASSERT
        Assert.Equal("FizzBuzz", result[14]); // Index 14 represents number 15
        Assert.Equal("FizzBuzz", result[29]); // Index 29 represents number 30
    }

    // 5th test - Upper limit with default[cite: 3]
    [Fact]
    public void GetList_RespectsUpperLimit_WhenPassed()
    {
        // ARRANGE
        int bramUpperLimit = 10;

        // ACT
        List<string> result = _fizzBuzz.getList(bramUpperLimit);

        // ASSERT
        Assert.Equal(10, result.Count);
        Assert.Equal("Buzz", result[9]); // Number 10
    }

    // 6th test - Lower limit with default[cite: 3]
    [Fact]
    public void GetList_RespectsLowerLimit_WhenPassed()
    {
        // ARRANGE
        int bramUpperLimit = 20;
        int bramLowerLimit = 15;

        // ACT
        List<string> result = _fizzBuzz.getList(bramUpperLimit, bramLowerLimit);

        // ASSERT
        Assert.Equal(6, result.Count); // 15, 16, 17, 18, 19, 20
        Assert.Equal("FizzBuzz", result[0]); // Number 15
    }

    // 7th test - Argument out of Range exception[cite: 3]
    [Fact]
    public void GetList_ThrowsArgumentOutOfRangeException_WhenLowerGreaterThanUpper()
    {
        // ARRANGE
        int bramUpperLimit = 10;
        int bramLowerLimit = 20;

        // ACT & ASSERT
        Assert.Throws<ArgumentOutOfRangeException>(() => _fizzBuzz.getList(bramUpperLimit, bramLowerLimit));
    }
}

}