Add endpoint for venue lookup with ID

backend/LeedsBeerQuest.API/LeedsBeerQuest.API.Tests/Data/Services/VenueServiceTests.cs

@@ -2,6 +2,7 @@ using System;
 using System.Linq;
 using System.Threading.Tasks;
 using LeedsBeerQuest.API.Data.Contexts;
+using LeedsBeerQuest.API.Data.Models;
 using LeedsBeerQuest.API.Data.Services;
 using Microsoft.EntityFrameworkCore;
 using NUnit.Framework;
@@ -27,9 +28,7 @@ public class VenueServiceTests
     [Test]
     public async Task GetAllVenues_ReturnsAllVenues_WhenAllVenuesArePresentInDatabase()
     {
-        var venueTestData = TestData.VenueTestData.ToArray();
+        var venueTestData = await seedVenueTestData();
-        _context.Venues.AddRange(venueTestData);
-        await _context.SaveChangesAsync();
 
         var result = await _venueService.GetAllVenues();
         var resultArray = result.ToArray();
@@ -47,4 +46,35 @@ public class VenueServiceTests
         
         Assert.AreEqual(0, result.Count());
     }
+
+    [Test]
+    public async Task GetVenue_ReturnsVenue_WhenRequestedVenueExists()
+    {
+        var venueTestData = await seedVenueTestData();
+        var expectedVenueId = venueTestData[0].Id;
+        var expectedVenueName = venueTestData[0].Name;
+
+        var result = await _venueService.GetVenue(expectedVenueId);;
+
+        Assert.NotNull(result);
+        Assert.AreEqual(expectedVenueId, result.Id);
+        Assert.AreEqual(expectedVenueName, result.Name);
+    }
+
+    [Test]
+    public async Task GetVenue_ReturnsNull_WhenRequestedVenueDoesNotExist()
+    {
+        var result = await _venueService.GetVenue(1);
+
+        Assert.Null(result);
+    }
+
+    private async Task<Venue[]> seedVenueTestData()
+    {
+        var venueTestData = TestData.VenueTestData.ToArray();
+        _context.Venues.AddRange(venueTestData);
+        await _context.SaveChangesAsync();
+
+        return venueTestData;
+    }
 }

backend/LeedsBeerQuest.API/LeedsBeerQuest.API/Controllers/VenueController.cs

@@ -23,4 +23,17 @@ public class VenueController : ControllerBase
         var venues = await _venueService.GetAllVenues();
         return Ok(venues);
     }
+
+    [HttpGet("{venueId:int}")]
+    public async Task<IActionResult> Get(int venueId)
+    {
+        if (venueId < 1)
+        {
+            return BadRequest("Requested venue ID must be more than zero");
+        }
+
+        var venue = await _venueService.GetVenue(venueId);
+
+        return venue == null ? NotFound() : Ok(venue);
+    }
 }

backend/LeedsBeerQuest.API/LeedsBeerQuest.API/Data/Services/Interfaces/IVenueService.cs

@@ -5,4 +5,5 @@ namespace LeedsBeerQuest.API.Data.Services.Interfaces;
 public interface IVenueService
 {
     public Task<IEnumerable<Venue>> GetAllVenues();
+    public Task<Venue?> GetVenue(int venueId);
 }

backend/LeedsBeerQuest.API/LeedsBeerQuest.API/Data/Services/VenueService.cs

@@ -21,4 +21,12 @@ public class VenueService : IVenueService
             .Include(v => v.Tags)
             .ToListAsync();
     }
+
+    public async Task<Venue?> GetVenue(int venueId)
+    {
+        return await _context.Venues
+            .Include(v => v.Category)
+            .Include(v => v.Tags)
+            .SingleOrDefaultAsync(v => v.Id == venueId);
+    }
 }