+ Upgraded packages

+ Added GetByMax, GetByMaxAsync, GetByMin, GetByMinAsync, GetMaxValue and GetMaxValueAsync Methods (GetMinValue and GetMinValueAsync will come in another PR)
+ Added tests

IntegrationTests/Infrastructure/TestRepository.cs

@@ -1,4 +1,9 @@
-using MongoDbGenericRepository;
+using MongoDB.Driver;
+using MongoDbGenericRepository;
+using MongoDbGenericRepository.Models;
+using System;
+using System.Linq.Expressions;
+using System.Threading.Tasks;
 
 namespace IntegrationTests.Infrastructure
 {
@@ -18,5 +23,20 @@ namespace IntegrationTests.Infrastructure
         {
             MongoDbContext.DropCollection<TDocument>(partitionKey);
         }
+
+        /// <summary>
+        /// Gets the max of a property in a mongodb collections that is satisfying the filter.
+        /// </summary>
+        /// <typeparam name="TDocument">The document type.</typeparam>
+        /// <typeparam name="TKey">The type of the primary key.</typeparam>
+        /// <returns></returns>
+        public async Task<TDocument> GetByMaxAsync<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, object>> orderByDescending)
+            where TDocument : IDocument<TKey>
+            where TKey : System.IEquatable<TKey>
+        {
+            return await GetCollection<TDocument, TKey>().Find(Builders<TDocument>.Filter.Where(filter))
+                                                         .SortByDescending(orderByDescending)
+                                                         .FirstOrDefaultAsync();
+        }
     }
 }