website/Website.Tests/Data/BlogRepositoryTests.cs

using System;
using System.Collections.Generic;
using System.Data;
using System.Threading.Tasks;
using Dapper;
using FluentAssertions;
using NSubstitute;
using NSubstitute.ExceptionExtensions;
using Website.Data;
using Website.Data.States;
using Website.Models;
using Xunit;

namespace Website.Tests.Data
{
	public class BlogRepositoryTests
	{
		private class MockDbConnection : IDbConnection
		{
			public string ConnectionString { get; set; }

			public int ConnectionTimeout => 0;

			public string Database => string.Empty;

			public ConnectionState State => ConnectionState.Open;

			public IDbTransaction BeginTransaction()
			{
				throw new NotImplementedException();
			}

			public IDbTransaction BeginTransaction(IsolationLevel il)
			{
				throw new NotImplementedException();
			}

			public void ChangeDatabase(string databaseName)
			{
			}

			public void Close()
			{
			}

			public IDbCommand CreateCommand()
			{
				throw new NotImplementedException();
			}

			public void Dispose()
			{
			}

			public void Open()
			{
			}
		}

		[Fact]
		public void GetPostAsync_WithValidId_ReturnsBlogPost() {
			var blogPostState = new BlogPostState
			{
				Post_Id = 1,
				Post_Title = "title",
				Post_Content = "content",
				Post_Timestamp = new DateTime(),
				Post_Deleted = false,
				Post_Draft = "draft",
				Post_Url = "url",
				User_Id = 1
			};
			var connection = Substitute.For<IDbConnection>();
			connection.QueryAsync(null, null, (Func<object[], BlogPostState>)null, null, null, false, null, null, null).ReturnsForAnyArgs(new[]{ blogPostState });

			var provider = Substitute.For<IDatabaseProvider>();
			provider.NewConnection().Returns(connection);

			var repo = new BlogRepository(provider);
			var post = repo.GetPostAsync(1);
			var expected = new BlogPost
			{
				Id = 1,
				Title = "title",
				Content = "content",
				Timestamp = new DateTime(),
				Draft = "draft",
				Url = "url",
				UserId = 1
			}; ;
			post.Should().BeEquivalentTo(expected);
		}

		//public async Task GetPostAsync_WithInvalidId_ReturnsNull()
		//public async Task GetPostAsync_WithDeletedPost_ReturnsNull()
	}
}