From 0c5f69a8abf861334196341ca9cc82753305602f Mon Sep 17 00:00:00 2001
From: Syndamia <kamen.d.mladenov@protonmail.com>
Date: Sat, 13 Mar 2021 15:04:34 +0200
Subject: Added tests for rating repository

---
 .../DevHive.Data.Tests/RatingRepository.Tests.cs   | 188 +++++++++++++++++++++
 1 file changed, 188 insertions(+)
 create mode 100644 src/Data/DevHive.Data.Tests/RatingRepository.Tests.cs

diff --git a/src/Data/DevHive.Data.Tests/RatingRepository.Tests.cs b/src/Data/DevHive.Data.Tests/RatingRepository.Tests.cs
new file mode 100644
index 0000000..17616fe
--- /dev/null
+++ b/src/Data/DevHive.Data.Tests/RatingRepository.Tests.cs
@@ -0,0 +1,188 @@
+using DevHive.Data.Repositories;
+using Microsoft.EntityFrameworkCore;
+using NUnit.Framework;
+using System.Threading.Tasks;
+using DevHive.Data.Models;
+using System.Linq;
+using System;
+using System.Collections.Generic;
+
+namespace DevHive.Data.Tests
+{
+    [TestFixture]
+	public class RatingRepositoryTests
+	{
+		private DevHiveContext Context { get; set; }
+		private RatingRepository RatingRepository { get; set; }
+
+		#region Setups
+		[SetUp]
+		public void Setup()
+		{
+			var optionsBuilder = new DbContextOptionsBuilder<DevHiveContext>()
+				.UseInMemoryDatabase(databaseName: "DevHive_Test_Database");
+
+			this.Context = new DevHiveContext(optionsBuilder.Options);
+			this.RatingRepository = new RatingRepository(this.Context, null);
+		}
+
+		[TearDown]
+		public void TearDown()
+		{
+			this.Context.Database.EnsureDeleted();
+		}
+		#endregion
+
+		#region GetById
+		[Test]
+		public async Task GetByIdAsync_ReturnsTheCorrectRating_IfItExists()
+		{
+			Guid ratingId = Guid.NewGuid();
+			await AddDummyRating(ratingId);
+
+			Rating ratingResult = await this.RatingRepository.GetByIdAsync(ratingId);
+
+			Assert.AreEqual(ratingResult.Id, ratingId);
+		}
+
+		[Test]
+		public async Task GetByIdAsync_ReturnsNull_IfRatingDoesNotExist()
+		{
+			Rating ratingResult = await this.RatingRepository.GetByIdAsync(Guid.NewGuid());
+
+			Assert.IsNull(ratingResult);
+		}
+		#endregion
+
+		#region GetByPostId
+		[Test]
+		public async Task GetRatingsByPostId_ReturnsFilledListOfRatings_WhenTheyExist()
+		{
+			Guid postId = Guid.NewGuid();
+			await AddDummyPost(postId);
+			await AddDummyRating(Guid.NewGuid(), postId);
+			await AddDummyRating(Guid.NewGuid(), postId);
+
+			List<Rating> result = await this.RatingRepository.GetRatingsByPostId(postId);
+
+			Assert.IsNotEmpty(result);
+		}
+
+		[Test]
+		public async Task GetRatingsByPostId_ReturnsEmptyList_WhenThereAreNoRatings()
+		{
+			List<Rating> result = await this.RatingRepository.GetRatingsByPostId(Guid.NewGuid());
+
+			Assert.IsEmpty(result);
+		}
+		#endregion
+
+		#region GetByUserAndPostId
+		[Test]
+		public async Task GetRatingByUserAndPostId_ReturnsRating_WhenItExists()
+		{
+			Guid ratingId = Guid.NewGuid();
+			Guid postId = Guid.NewGuid();
+			Guid userId = Guid.NewGuid();
+			await AddDummyPost(postId);
+			await AddDummyUser(userId);
+			await AddDummyRating(ratingId, postId, userId);
+
+			Rating result = await this.RatingRepository.GetRatingByUserAndPostId(userId, postId);
+
+			Assert.AreEqual(result.Id, ratingId);
+		}
+
+		[Test]
+		public async Task GetRatingByUserAndPostId_ReturnsNull_WhenRatingDoesNotExist()
+		{
+			Rating result = await this.RatingRepository.GetRatingByUserAndPostId(Guid.NewGuid(), Guid.NewGuid());
+
+			Assert.IsNull(result);
+		}
+		#endregion
+
+		#region UserRatedPost
+		[Test]
+		public async Task UserRatedPost_ReturnsTrue_WhenUserHasRatedPost()
+		{
+			Guid postId = Guid.NewGuid();
+			Guid userId = Guid.NewGuid();
+			await AddDummyPost(postId);
+			await AddDummyUser(userId);
+			await AddDummyRating(Guid.NewGuid(), postId, userId);
+
+			bool result = await this.RatingRepository.UserRatedPost(userId, postId);
+
+			Assert.IsTrue(result);
+		}
+
+		[Test]
+		public async Task UserRatedPost_ReturnsFalse_WhenUserHasNotRatedPost()
+		{
+			bool result = await this.RatingRepository.UserRatedPost(Guid.NewGuid(), Guid.NewGuid());
+
+			Assert.IsFalse(result);
+		}
+		#endregion
+
+		#region DoesRatingExist
+		[Test]
+		public async Task DoesRatingExist_ReturnsTrue_WhenItExists()
+		{
+			Guid ratingId = Guid.NewGuid();
+			await AddDummyRating(ratingId);
+
+			bool result = await this.RatingRepository.DoesRatingExist(ratingId);
+
+			Assert.IsTrue(result);
+		}
+
+		[Test]
+		public async Task DoesRatingExist_ReturnsFalse_WhenRatingDoesNotExist()
+		{
+			bool result = await this.RatingRepository.DoesRatingExist(Guid.NewGuid());
+
+			Assert.IsFalse(result);
+		}
+		#endregion
+
+		#region HelperMethods
+		private async Task AddDummyRating(Guid ratingId, Guid postId = default(Guid), Guid userId = default(Guid))
+		{
+			Rating rating = new Rating
+			{
+				Id = ratingId,
+				Post = this.Context.Posts.FirstOrDefault(x => x.Id == postId),
+				User = this.Context.Users.FirstOrDefault(x => x.Id == userId)
+			};
+
+			await this.Context.Rating.AddAsync(rating);
+			await this.Context.SaveChangesAsync();
+		}
+
+		private async Task AddDummyPost(Guid postId)
+		{
+			Post post = new Post()
+			{
+				Id = postId,
+				Message = "Never gonna give you up"
+			};
+
+			await this.Context.Posts.AddAsync(post);
+			await this.Context.SaveChangesAsync();
+		}
+
+		private async Task AddDummyUser(Guid userId)
+		{
+			User user = new User()
+			{
+				Id = userId
+			};
+
+			await this.Context.Users.AddAsync(user);
+			await this.Context.SaveChangesAsync();
+		}
+		#endregion
+	}
+}
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