diff --git a/Sources/TestUnitaire/TestEfLol.cs b/Sources/TestUnitaire/TestEfLol.cs
index d9bae90..26c10b1 100644
--- a/Sources/TestUnitaire/TestEfLol.cs
+++ b/Sources/TestUnitaire/TestEfLol.cs
@@ -1,6 +1,7 @@
 using EFLol;
 using Microsoft.Data.Sqlite;
 using Microsoft.EntityFrameworkCore;
+using System.Collections.ObjectModel;
 
 namespace TestUnitaire
 {
@@ -9,14 +10,14 @@ namespace TestUnitaire
 	
 		[Theory]
 
-		[InlineData("Zeus", "Dieu de la foudre", true)]
-		[InlineData("Hades", "Dieu des enfers", true)]
-		[InlineData("Aphrodite", "Déesse de l'amour", true)]
-		[InlineData("AresAresAresAresAresAresAresAresAresAres",
+		[InlineData(0,"Zeus", "Dieu de la foudre", true)]
+		[InlineData(10,"Hades", "Dieu des enfers", true)]
+		[InlineData(1,"Aphrodite", "Déesse de l'amour", true)]
+		[InlineData(10,"AresAresAresAresAresAresAresAresAresAres",
 			"Dieu de la guerreDieu de la guerreDieu de la guerreDieu de la guerreDieu de la guerreDieu de la guerreDieu de la guerreDieu de la guerreDieu de la guerreDieu de la guerre" +
 			"Dieu de la guerreDieu de la guerreDieu de la guerreDieu de la guerreDieu de la guerreDieu de la guerreDieu de la guerreDieu de la guerreDieu de la guerreDieu de la guerre" +
 			"Dieu de la guerreDieu de la guerreDieu de la guerreDieu de la guerreDieu de la guerreDieu de la guerreDieu de la guerreDieu de la guerreDieu de la guerreDieu de la guerre", false)]
-		public async Task TestAddInMemory(String name, String bio, bool expected)
+		public async Task TestAddInMemory(int id, String name, String bio, bool expected)
 		{
 			var connection = new SqliteConnection("DataSource=:memory:");
 			connection.Open();
@@ -28,10 +29,17 @@ namespace TestUnitaire
 			using (var context = new MyDbContext(options))
 			{
 				await context.Database.EnsureCreatedAsync();
+				SkinEntity black = new SkinEntity { Name = "Black", Description = "Black skin", Icon = "black.png", Price = 0.99f };
+				SkinEntity white = new SkinEntity { Name = "White", Description = "White skin", Icon = "white.png", Price = 150.99f };
+				SkinEntity green = new SkinEntity { Name = "Green", Description = "Green skin", Icon = "green.png", Price = 4.99f };
+
+
 				var Dieu = new ChampionEntity
 				{
+					Id = id,
 					Name = name,
-					Bio = bio
+					Bio = bio,
+					Skins = new Collection<SkinEntity>(new List<SkinEntity> { black, white, green })
 				};
 
 				ChampionEntity found = await context.Champions.SingleOrDefaultAsync(c => c.Name == "Zeus");
@@ -45,6 +53,7 @@ namespace TestUnitaire
 
 				Assert.Equal(1, await context.Champions.CountAsync());
 				Assert.Equal(name, found.Name);
+				Assert.Equal(3,found.Skins.Count);
 
 				// Test if the max length of the name is respected (30) and the max length of the bio is respected (256)
 				if (expected)
@@ -54,8 +63,8 @@ namespace TestUnitaire
 				}
 				else
 				{
-					Assert.False(found.Bio.Length <= 256);
 					Assert.False(found.Name.Length <= 30);
+					Assert.False(found.Bio.Length <= 256);
 				}
 			}
 
@@ -77,9 +86,9 @@ namespace TestUnitaire
                 //context.Database.OpenConnection();
                 context.Database.EnsureCreated();
 
-                ChampionEntity chewie = new ChampionEntity { Name = "Chewbacca", Bio = "Zeus is the king of the gods." };
-                ChampionEntity yoda = new ChampionEntity { Name = "Yoda", Bio = "Zeus is the king of the gods." };
-                ChampionEntity ewok = new ChampionEntity { Name = "Ewok", Bio = "Zeus is the king of the gods." };
+                ChampionEntity chewie = new ChampionEntity {Id = 0, Name = "Chewbacca", Bio = "Zeus is the king of the gods." };
+                ChampionEntity yoda = new ChampionEntity {Id = 1, Name = "Yoda", Bio = "Zeus is the king of the gods." };
+                ChampionEntity ewok = new ChampionEntity { Id = 2, Name = "Ewok", Bio = "Zeus is the king of the gods." };
 
 
                 context.Champions.Add(chewie);
@@ -113,5 +122,54 @@ namespace TestUnitaire
                 Assert.Equal(1, context.Champions.Where(n => n.Name.ToLower().Contains(nameToFind)).Count());
             }
         }
-    }
+
+		[Theory]
+
+		[InlineData(0,"black", "super Skin", "icon1.png",190000000.2f,true)]
+		[InlineData(1,"White", "skin1", "icon1", 19, true)]
+		[InlineData(2,"Green", "skin", "icon1.jpg", -1, false)]
+		public async Task TestAddSkinToChampionInMemory(int id,String name, String description, String icon,float price,bool expected)
+		{
+			var connection = new SqliteConnection("DataSource=:memory:");
+			connection.Open();
+
+			var options = new DbContextOptionsBuilder<MyDbContext>()
+				.UseSqlite(connection)
+				.Options;
+
+			using (var context = new MyDbContext(options))
+			{
+				await context.Database.EnsureCreatedAsync();
+
+				var Dieu = new ChampionEntity
+				{
+					Id = 0,
+					Name = "Zeus",
+					Bio = "Dieu de la foudre",
+					Skins = new Collection<SkinEntity>()
+				};
+
+                SkinEntity item = new SkinEntity
+                {
+					Id = id,
+                    Name = name,
+                    Description = description,
+                    Icon = icon,
+                    Price = price
+                };
+
+                Dieu.Skins.Add(item);
+				
+				ChampionEntity found = await context.Champions.SingleOrDefaultAsync(c => c.Name == "Zeus");
+				Assert.Null(found);
+
+				await context.Champions.AddAsync(Dieu);
+				await context.SaveChangesAsync();
+
+				found = await context.Champions.SingleOrDefaultAsync(c => c.Name == name);
+			}
+
+		}
+
+	}
 }
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