Add TagService with TagController

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

@@ -0,0 +1,47 @@
+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 LeedsBeerQuest.API.Data.Services.Interfaces;
+using Microsoft.EntityFrameworkCore;
+using NUnit.Framework;
+
+namespace LeedsBeerQuest.API.Tests.Data.Services;
+
+[TestFixture]
+public class TagServiceTests
+{
+    private LeedsBeerQuestDbContext _context;
+    private ITagService _tagService;
+
+    [SetUp]
+    public void SetUp()
+    {
+        var builder = new DbContextOptionsBuilder<LeedsBeerQuestDbContext>()
+            .UseInMemoryDatabase($"CategoryServiceTests.{Guid.NewGuid().ToString()}");
+        _context = new LeedsBeerQuestDbContext(builder.Options);
+
+        _tagService = new TagService(_context);
+    }
+
+    [Test]
+    public async Task GetTags_ReturnsAllTags_WhenAllTagsArePresentInDatabase()
+    {
+        var tagTestData = await seedTagTestData();
+
+        var result = await _tagService.GetTags();
+
+        Assert.AreEqual(tagTestData.Length, result.Count());
+    }
+
+    private async Task<Tag[]> seedTagTestData()
+    {
+        var tagTestData = TestData.TagTestData;
+        _context.Tags.AddRange(tagTestData);
+        await _context.SaveChangesAsync();
+
+        return tagTestData;
+    }
+}

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

@@ -64,4 +64,34 @@ public static class TestData
         },
 
     };
+
+    public static Tag[] TagTestData => new[]
+    {
+        new Tag
+        {
+            Id = 1,
+            Name = "Tag 1",
+        },
+        new Tag
+        {
+            Id = 2,
+            Name = "Tag 2",
+        },
+        new Tag
+        {
+            Id = 3,
+            Name = "Tag 3",
+        },
+        new Tag
+        {
+            Id = 4,
+            Name = "Tag 4",
+        },
+        new Tag
+        {
+            Id = 5,
+            Name = "Tag 5",
+        },
+
+    };
 }