Put interface behind database provider for testing. Use state object to get data from database, then map to model.

Website/Data/BlogRepository.cs

@@ -2,21 +2,22 @@ using System.Threading.Tasks;
 using System.Linq;
 using Dapper;
 using Website.Models;
+using Website.Data.States;
 
 namespace Website.Data
 {
 	public class BlogRepository
 	{
-		private readonly DatabaseProvider _dbProvider;
+		private readonly IDatabaseProvider _dbProvider;
 
-		public BlogRepository(DatabaseProvider dbProvider) => _dbProvider = dbProvider;
+		public BlogRepository(IDatabaseProvider dbProvider) => _dbProvider = dbProvider;
 
 		public async Task<BlogPost> GetPostAsync(int id) {
-			const string query = "SELECT * FROM blog_posts WHERE post_id=@id";
+			const string query = "SELECT * FROM blog_posts WHERE post_id=@id AND post_deleted=0";
 			using (var connection = _dbProvider.NewConnection()) {
 				connection.Open();
-				var result = await connection.QueryAsync<BlogPost>(query, new{id});
-				return result.FirstOrDefault();
+				var result = await connection.QueryAsync<BlogPostState>(query, new{id});
+				return new BlogPost(result.First());
 			}
 		}
 	}

Website/Data/DatabaseProvider.cs

@@ -1,17 +0,0 @@
-using System.Data;
-using Microsoft.Extensions.Configuration;
-using MySql.Data.MySqlClient;
-
-namespace Website.Data
-{
-	public class DatabaseProvider
-	{
-		private readonly string _connectionString;
-
-		public DatabaseProvider(IConfiguration config) => _connectionString = config.GetConnectionString("database");
-
-		public DatabaseProvider(string connectionString) => _connectionString = connectionString;
-
-		public IDbConnection NewConnection() => new MySqlConnection(_connectionString);
-	}
-}

Website/Data/IDatabaseProvider.cs

@@ -0,0 +1,9 @@
+using System.Data;
+
+namespace Website.Data
+{
+	public interface IDatabaseProvider
+	{
+		IDbConnection NewConnection();
+	}
+}

Website/Data/MySQLDatabaseProvider.cs

@@ -0,0 +1,17 @@
+using System.Data;
+using Microsoft.Extensions.Configuration;
+using MySql.Data.MySqlClient;
+
+namespace Website.Data
+{
+	public class MySQLDatabaseProvider:IDatabaseProvider
+	{
+		private readonly string _connectionString;
+
+		public MySQLDatabaseProvider(IConfiguration config) => _connectionString = config.GetConnectionString("database");
+
+		public MySQLDatabaseProvider(string connectionString) => _connectionString = connectionString;
+
+		public IDbConnection NewConnection() => new MySqlConnection(_connectionString);
+	}
+}

Website/Data/States/BlogPostState.cs

@@ -0,0 +1,19 @@
+using System;
+using Dapper.Contrib.Extensions;
+
+namespace Website.Data.States
+{
+	[Table("blog_posts")]
+	public class BlogPostState
+	{
+		[Key]
+		public int Post_Id { get; set; }
+		public string Post_Title { get; set; }
+		public string Post_Content { get; set; }
+		public DateTime Post_Timestamp { get; set; }
+		public string Post_Draft { get; set; }
+		public string Post_Url { get; set; }
+		public bool Post_Deleted{ get; set; }
+		public int User_Id { get; set; }
+	}
+}