1 files changed, 320 insertions, 0 deletions
diff --git a/src/Services/DevHive.Services.Tests/PostService.Tests.cs b/src/Services/DevHive.Services.Tests/PostService.Tests.cs
new file mode 100644
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--- /dev/null
+++ b/src/Services/DevHive.Services.Tests/PostService.Tests.cs
@@ -0,0 +1,320 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using AutoMapper;
+using DevHive.Data.Interfaces;
+using DevHive.Data.Models;
+using DevHive.Services.Interfaces;
+using DevHive.Services.Models.Post;
+using DevHive.Services.Services;
+using Microsoft.AspNetCore.Http;
+using Moq;
+using NUnit.Framework;
+
+namespace DevHive.Services.Tests
+{
+	[TestFixture]
+	public class PostServiceTests
+	{
+		private const string MESSAGE = "Gosho Trapov";
+		private Mock<ICloudService> _cloudServiceMock;
+		private Mock<IPostRepository> _postRepositoryMock;
+		private Mock<ICommentRepository> _commentRepositoryMock;
+		private Mock<IUserRepository> _userRepositoryMock;
+		private Mock<IMapper> _mapperMock;
+		private PostService _postService;
+
+		#region SetUps
+		[SetUp]
+		public void Setup()
+		{
+			this._postRepositoryMock = new Mock<IPostRepository>();
+			this._cloudServiceMock = new Mock<ICloudService>();
+			this._userRepositoryMock = new Mock<IUserRepository>();
+			this._commentRepositoryMock = new Mock<ICommentRepository>();
+			this._mapperMock = new Mock<IMapper>();
+			this._postService = new PostService(this._cloudServiceMock.Object, this._userRepositoryMock.Object, this._postRepositoryMock.Object, this._commentRepositoryMock.Object, this._mapperMock.Object);
+		}
+		#endregion
+
+		#region CreatePost
+		[Test]
+		public async Task CreatePost_ReturnsIdOfThePost_WhenItIsSuccessfullyCreated()
+		{
+			Guid postId = Guid.NewGuid();
+			User creator = new User { Id = Guid.NewGuid() };
+			CreatePostServiceModel createPostServiceModel = new CreatePostServiceModel
+			{
+				Files = new List<IFormFile>()
+			};
+			Post post = new Post
+			{
+				Message = MESSAGE,
+				Id = postId,
+			};
+
+			this._postRepositoryMock
+				.Setup(p => p.AddAsync(It.IsAny<Post>()))
+				.ReturnsAsync(true);
+			this._postRepositoryMock
+				.Setup(p => p.GetPostByCreatorAndTimeCreatedAsync(It.IsAny<Guid>(), It.IsAny<DateTime>()))
+				.ReturnsAsync(post);
+			this._userRepositoryMock
+				.Setup(p => p.DoesUserExistAsync(It.IsAny<Guid>()))
+				.ReturnsAsync(true);
+			this._userRepositoryMock
+				.Setup(p => p.GetByIdAsync(It.IsAny<Guid>()))
+				.ReturnsAsync(creator);
+			this._mapperMock
+				.Setup(p => p.Map<Post>(It.IsAny<CreatePostServiceModel>()))
+				.Returns(post);
+
+			Guid result = await this._postService.CreatePost(createPostServiceModel);
+
+			Assert.AreEqual(postId, result, "CreatePost does not return the correct id");
+		}
+
+		[Test]
+		public async Task CreatePost_ReturnsEmptyGuid_WhenItIsNotSuccessfullyCreated()
+		{
+			CreatePostServiceModel createPostServiceModel = new CreatePostServiceModel
+			{
+				Files = new List<IFormFile>()
+			};
+			Post post = new Post
+			{
+				Message = MESSAGE,
+			};
+
+			this._postRepositoryMock
+				.Setup(p => p.AddAsync(It.IsAny<Post>()))
+				.ReturnsAsync(false);
+			this._userRepositoryMock
+				.Setup(p => p.DoesUserExistAsync(It.IsAny<Guid>()))
+				.ReturnsAsync(true);
+			this._mapperMock
+				.Setup(p => p.Map<Post>(It.IsAny<CreatePostServiceModel>()))
+				.Returns(post);
+
+			Guid result = await this._postService.CreatePost(createPostServiceModel);
+
+			Assert.AreEqual(Guid.Empty, result, "CreatePost does not return empty id");
+		}
+
+		[Test]
+		public void CreatePost_ThrowsException_WhenUserDoesNotExist()
+		{
+			const string EXCEPTION_MESSAGE = "User does not exist!";
+			CreatePostServiceModel createPostServiceModel = new CreatePostServiceModel
+			{
+			};
+
+			Exception ex = Assert.ThrowsAsync<ArgumentNullException>(() => this._postService.CreatePost(createPostServiceModel), "CreatePost does not throw excpeion when the user does not exist");
+
+			// Assert.AreEqual(EXCEPTION_MESSAGE, ex.Message, "Excapetion message is not correct");
+		}
+		#endregion
+
+		#region GetPostById
+		[Test]
+		public async Task GetPostById_ReturnsThePost_WhenItExists()
+		{
+			Guid creatorId = Guid.NewGuid();
+			User creator = new User { Id = creatorId };
+			Post post = new Post
+			{
+				Message = MESSAGE,
+				Creator = creator,
+				Ratings = new List<Rating>()
+			};
+			ReadPostServiceModel readPostServiceModel = new ReadPostServiceModel
+			{
+				Message = MESSAGE
+			};
+			User user = new User
+			{
+				Id = creatorId,
+			};
+
+			this._postRepositoryMock
+				.Setup(p => p.GetByIdAsync(It.IsAny<Guid>()))
+				.ReturnsAsync(post);
+			this._userRepositoryMock
+				.Setup(p => p.GetByIdAsync(It.IsAny<Guid>()))
+				.ReturnsAsync(user);
+			this._mapperMock
+				.Setup(p => p.Map<ReadPostServiceModel>(It.IsAny<Post>()))
+				.Returns(readPostServiceModel);
+
+			ReadPostServiceModel result = await this._postService.GetPostById(Guid.NewGuid());
+
+			Assert.AreEqual(MESSAGE, result.Message);
+		}
+
+		[Test]
+		public void GetPostById_ThorwsException_WhenTheUserDoesNotExist()
+		{
+			const string EXCEPTION_MESSAGE = "The user does not exist!";
+			Guid creatorId = Guid.NewGuid();
+			User creator = new User { Id = creatorId };
+			Post post = new Post
+			{
+				Message = MESSAGE,
+				Creator = creator
+			};
+
+			this._postRepositoryMock
+				.Setup(p => p.GetByIdAsync(It.IsAny<Guid>()))
+				.ReturnsAsync(post);
+
+			Exception ex = Assert.ThrowsAsync<ArgumentNullException>(() => this._postService.GetPostById(Guid.NewGuid()), "GetPostById does not throw exception when the user does not exist");
+
+			// Assert.AreEqual(EXCEPTION_MESSAGE, ex.Message);
+		}
+
+		[Test]
+		public void GetPostById_ThrowsException_WhenCommentDoesNotExist()
+		{
+			string exceptionMessage = "The post does not exist!";
+			Guid creatorId = Guid.NewGuid();
+			User user = new User
+			{
+				Id = creatorId,
+			};
+
+			this._postRepositoryMock
+				.Setup(p => p.GetByIdAsync(It.IsAny<Guid>()))
+				.Returns(Task.FromResult<Post>(null));
+			this._userRepositoryMock
+				.Setup(p => p.GetByIdAsync(It.IsAny<Guid>()))
+				.ReturnsAsync(user);
+
+			Exception ex = Assert.ThrowsAsync<ArgumentNullException>(() => this._postService.GetPostById(Guid.NewGuid()));
+
+			// Assert.AreEqual(exceptionMessage, ex.Message, "Incorecct exception message");
+		}
+		#endregion
+
+		#region UpdatePost
+		[Test]
+		public async Task UpdatePost_ReturnsTheIdOfThePost_WhenUpdatedSuccessfully()
+		{
+			Guid id = Guid.NewGuid();
+			Post post = new Post
+			{
+				Id = id,
+				Message = MESSAGE
+			};
+			UpdatePostServiceModel updatePostServiceModel = new UpdatePostServiceModel
+			{
+				PostId = id,
+				NewMessage = MESSAGE,
+				Files = new List<IFormFile>()
+			};
+
+			this._postRepositoryMock
+				.Setup(p => p.DoesPostExist(It.IsAny<Guid>()))
+				.ReturnsAsync(true);
+			this._postRepositoryMock
+				.Setup(p => p.EditAsync(It.IsAny<Guid>(), It.IsAny<Post>()))
+				.ReturnsAsync(true);
+			this._postRepositoryMock
+				.Setup(p => p.GetByIdAsync(It.IsAny<Guid>()))
+				.ReturnsAsync(post);
+			this._mapperMock
+				.Setup(p => p.Map<Post>(It.IsAny<UpdatePostServiceModel>()))
+				.Returns(post);
+
+			Guid result = await this._postService.UpdatePost(updatePostServiceModel);
+
+			Assert.AreEqual(updatePostServiceModel.PostId, result);
+		}
+
+		[Test]
+		public async Task UpdatePost_ReturnsEmptyId_WhenThePostIsNotUpdatedSuccessfully()
+		{
+			Post post = new Post
+			{
+				Message = MESSAGE
+			};
+			UpdatePostServiceModel updatePostServiceModel = new UpdatePostServiceModel
+			{
+				PostId = Guid.NewGuid(),
+				NewMessage = MESSAGE,
+				Files = new List<IFormFile>()
+			};
+
+			this._postRepositoryMock
+				.Setup(p => p.DoesPostExist(It.IsAny<Guid>()))
+				.ReturnsAsync(true);
+			this._postRepositoryMock
+				.Setup(p => p.EditAsync(It.IsAny<Guid>(), It.IsAny<Post>()))
+				.ReturnsAsync(false);
+			this._mapperMock
+				.Setup(p => p.Map<Post>(It.IsAny<UpdatePostServiceModel>()))
+				.Returns(post);
+
+			Guid result = await this._postService.UpdatePost(updatePostServiceModel);
+
+			Assert.AreEqual(Guid.Empty, result);
+		}
+
+		[Test]
+		public void UpdatePost_ThrowsArgumentException_WhenCommentDoesNotExist()
+		{
+			string exceptionMessage = "Post does not exist!";
+			UpdatePostServiceModel updatePostServiceModel = new UpdatePostServiceModel
+			{
+			};
+
+			this._postRepositoryMock
+				.Setup(p => p.DoesPostExist(It.IsAny<Guid>()))
+				.ReturnsAsync(false);
+
+			Exception ex = Assert.ThrowsAsync<ArgumentNullException>(() => this._postService.UpdatePost(updatePostServiceModel));
+
+			// Assert.AreEqual(exceptionMessage, ex.Message, "Incorecct exception message");
+		}
+		#endregion
+
+		#region DeletePost
+		[Test]
+		[TestCase(true)]
+		[TestCase(false)]
+		public async Task Deletepost_ShouldReturnIfDeletionIsSuccessfull_WhenPostExists(bool shouldPass)
+		{
+			Guid id = Guid.NewGuid();
+			Post post = new Post();
+
+			this._postRepositoryMock
+				.Setup(p => p.DoesPostExist(It.IsAny<Guid>()))
+				.ReturnsAsync(true);
+			this._postRepositoryMock
+				.Setup(p => p.GetByIdAsync(It.IsAny<Guid>()))
+				.ReturnsAsync(post);
+			this._postRepositoryMock
+				.Setup(p => p.DeleteAsync(It.IsAny<Post>()))
+				.ReturnsAsync(shouldPass);
+
+			bool result = await this._postService.DeletePost(id);
+
+			Assert.AreEqual(shouldPass, result);
+		}
+
+		[Test]
+		public void DeletePost_ThrowsException_WhenPostDoesNotExist()
+		{
+			string exceptionMessage = "Post does not exist!";
+			Guid id = Guid.NewGuid();
+
+			this._postRepositoryMock
+				.Setup(p => p.DoesPostExist(It.IsAny<Guid>()))
+				.ReturnsAsync(false);
+
+			Exception ex = Assert.ThrowsAsync<ArgumentNullException>(() => this._postService.DeletePost(id));
+
+			// Assert.AreEqual(exceptionMessage, ex.Message, "Incorecct exception message");
+		}
+		#endregion
+	}
+}