x-lab-lbq-technical-test/backend/LeedsBeerQuest.API/LeedsBeerQuest.API.Tests/Controllers/VenueControllerTests.cs

using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using LeedsBeerQuest.API.Controllers;
using LeedsBeerQuest.API.Data.Models;
using LeedsBeerQuest.API.Data.Services.Interfaces;
using LeedsBeerQuest.API.Tests.Data.Services;
using LeedsBeerQuest.API.Tests.TestHelpers;
using Microsoft.AspNetCore.Mvc;
using NSubstitute;
using NSubstitute.ReturnsExtensions;
using NUnit.Framework;

namespace LeedsBeerQuest.API.Tests.Controllers;

[TestFixture]
public class VenueControllerTests
{
    private IVenueService _venueService;
    private VenueController _venueController;

    [SetUp]
    public void SetUp()
    {
        _venueService = Substitute.For<IVenueService>();
        _venueController = new VenueController(_venueService);
    }

    [Test]
    public async Task GetAll_ReturnsOk_WithAllVenues_WhenNoVenueIdIsPassed()
    {
        _venueService.GetAllVenues().Returns(TestData.VenueTestData);

        var result = await _venueController.GetAll();
        var resultValue = ControllerTestHelper.ActionResultToOkResultValue<IEnumerable<Venue>>(result);

        Assert.NotNull(resultValue);
        Assert.AreEqual(TestData.VenueTestData.Count(), resultValue.Count());
    }

    [Test]
    public async Task GetVenue_ReturnsOk_WithVenue_WhenVenueIdIsPassedAndIsReturnedFromService()
    {
        var venueTestData = TestData.VenueTestData.ToArray();
        _venueService.GetVenue(Arg.Any<int>()).Returns(venueTestData[0]);

        var result = await _venueController.GetVenue(1);
        var resultValue = ControllerTestHelper.ActionResultToOkResultValue<Venue>(result);

        Assert.AreEqual(venueTestData[0].Id, resultValue.Id);
        Assert.AreEqual(venueTestData[0].Name, resultValue.Name);
    }

    [TestCase(0)]
    [TestCase(-1)]
    [TestCase(-1000)]
    public async Task GetVenue_ReturnsBadRequest_WhenVenueIdPassedIsInvalid(int venueId)
    {
        var result = await _venueController.GetVenue(-1);

        var badRequestResult = result as BadRequestObjectResult;
        Assert.NotNull(badRequestResult);

        var badRequestString = badRequestResult.Value as string;
        Assert.NotNull(badRequestString);

        Assert.AreEqual("Requested venue ID must be more than zero", badRequestString);
    }

    [Test]
    public async Task GetVenue_ReturnsNotFound_WhenVenueIsNotReturnedFromService()
    {
        _venueService.GetVenue(Arg.Any<int>()).ReturnsNull();

        var result = await _venueController.GetVenue(1);
        var notFoundResult = result as NotFoundResult;

        Assert.NotNull(notFoundResult);
    }
}