Correct error

src/EntityFramework_LoL/Sources/MyFlib/Entities/ChampionEntity.cs

@@ -20,7 +20,7 @@ namespace MyFlib
         [MaxLength(255)]
         public string Bio { get; set; }
         public string Icon { get; set; }
-        public LargeImageEntity Image { get; set; }
+        public string Image { get; set; }
         [Required]
         public ChampionClassEntity Class { get; set; }
         public ICollection<SkillEntity> Skills { get; set; }

src/EntityFramework_LoL/Sources/MyFlib/Entities/LargeImageEntity.cs

@@ -9,7 +9,9 @@ namespace MyFlib
 {
     public class LargeImageEntity
     {
+
         [Key]
+        public int ImageId { get; set; }
         public string Base64 { get; set; }
 
     }

src/EntityFramework_LoL/Sources/MyFlib/LolDbContext.cs

@@ -10,9 +10,8 @@ namespace MyFlib
     public class LolDbContext : DbContext
     {
         public DbSet<ChampionEntity> Champions { get; set; }
-        public DbSet<SkinEntity> Skills { get; set; }
+        public DbSet<SkillEntity> Skills { get; set; }
         public DbSet<SkinEntity> Skins { get; set; }
-        public DbSet<LargeImageEntity> Images { get; set; }
         public LolDbContext()
         { }
 
@@ -28,30 +27,32 @@ namespace MyFlib
         }
         protected override void OnModelCreating(ModelBuilder modelBuilder)
         {
+            var image1 = new LargeImageEntity { ImageId = 1, Base64 = "image1" };
+            var image2 = new LargeImageEntity { ImageId = 2, Base64 = "image2" };
+
+            modelBuilder.Entity<LargeImageEntity>().HasData(image1, image2);
+
+            modelBuilder.Entity<SkinEntity>().Property<int>("ImageId");
+
             modelBuilder.Entity<ChampionEntity>().HasKey(e => e.Id);
             modelBuilder.Entity<ChampionEntity>().Property(e => e.Id).ValueGeneratedOnAdd();
             modelBuilder.Entity<ChampionEntity>().HasData(
-                new ChampionEntity { Id = Guid.Parse("{4422C524-B2CB-43EF-8263-990C3CEA7CAE}"), Name = "Akali", Class = ChampionClassEntity.Assassin, Bio = "", Icon = "", Image = new LargeImageEntity { Base64 = "empty" } },
-                new ChampionEntity { Id = Guid.Parse("{A4F84D92-C20F-4F2D-B3F9-CA00EF556E72}"), Name = "Aatrox", Class = ChampionClassEntity.Fighter, Bio = "", Icon = "", Image = new LargeImageEntity { Base64 = "empty" } },
-                new ChampionEntity { Id = Guid.Parse("{AE5FE535-F041-445E-B570-28B75BC78CB9}"), Name = "Ahri", Class = ChampionClassEntity.Mage, Bio = "", Icon = "", Image = new LargeImageEntity { Base64 = "empty" } },
-                new ChampionEntity { Id = Guid.Parse("{3708dcfd-02a1-491e-b4f7-e75bf274cf23}"), Name = "Akshan", Class = ChampionClassEntity.Marksman, Bio = "", Icon = "", Image = new LargeImageEntity { Base64 = "empty" } },
-                new ChampionEntity { Id = Guid.Parse("{7f7746fa-b1cb-49da-9409-4b3e6910500e}"), Name = "Bard", Class = ChampionClassEntity.Support, Bio = "", Icon = "", Image = new LargeImageEntity { Base64 = "empty" } },
-                new ChampionEntity { Id = Guid.Parse("{36ad2a82-d17b-47de-8a95-6e154a7df557}"), Name = "Alistar", Class = ChampionClassEntity.Tank, Bio = "", Icon = "", Image = new LargeImageEntity { Base64 = "empty" } }
+                new { Id = Guid.Parse("{4422C524-B2CB-43EF-8263-990C3CEA7CAE}"), Name = "Akali", Class = ChampionClassEntity.Assassin, Bio = "", Icon = "", Image = "empty" },
+                new { Id = Guid.Parse("{A4F84D92-C20F-4F2D-B3F9-CA00EF556E72}"), Name = "Aatrox", Class = ChampionClassEntity.Fighter, Bio = "", Icon = "", Image = "empty" },
+                new { Id = Guid.Parse("{AE5FE535-F041-445E-B570-28B75BC78CB9}"), Name = "Ahri", Class = ChampionClassEntity.Mage, Bio = "", Icon = "", Image = "empty" },
+                new { Id = Guid.Parse("{3708dcfd-02a1-491e-b4f7-e75bf274cf23}"), Name = "Akshan", Class = ChampionClassEntity.Marksman, Bio = "", Icon = "", Image = "empty" },
+                new { Id = Guid.Parse("{7f7746fa-b1cb-49da-9409-4b3e6910500e}"), Name = "Bard", Class = ChampionClassEntity.Support, Bio = "", Icon = "", Image = "empty" },
+                new { Id = Guid.Parse("{36ad2a82-d17b-47de-8a95-6e154a7df557}"), Name = "Alistar", Class = ChampionClassEntity.Tank, Bio = "", Icon = "", Image = "empty" }
             );
 
             modelBuilder.Entity<SkillEntity>().HasData(
-                new SkillEntity { Name = "Boule de feu", Description = "Fire!", Type = SkillTypeEntity.Basic },
-                new SkillEntity { Name = "White Star", Description = "Random damage", Type = SkillTypeEntity.Ultimate }
-            );
-
-            modelBuilder.Entity<Images>().HasData(
-                new LargeImageEntity { Base64 = "empty" },
-                new LargeImageEntity { Base64 = "empty2" }
+                new { Name = "Boule de feu", Description = "Fire!", Type = SkillTypeEntity.Basic },
+                new { Name = "White Star", Description = "Random damage", Type = SkillTypeEntity.Ultimate }
             );
 
             modelBuilder.Entity<SkinEntity>().HasData(
-                new SkinEntity { Name = "Yone fleur spirituelle", Description = "Spirit Blossom", Icon = "empty", Price = 975, Image = new LargeImageEntity { Base64 = "empty" } },
-                new SkinEntity { Name = "Yasuo Lune de sang", Description = "Blood Moon", Icon = "empty", Price = 975, Image = new LargeImageEntity { Base64 = "empty" } }
+                new SkinEntity { Name = "Yone fleur spirituelle", Description = "Spirit Blossom", Icon = "empty", Price = 975, ImageId = 1 },
+                new SkinEntity { Name = "Yasuo Lune de sang", Description = "Blood Moon", Icon = "empty", Price = 975, ImageId = 2 }
             );
 
         }

src/EntityFramework_LoL/Sources/Tests/UT_EF/ChampionsTest.cs

@@ -19,11 +19,7 @@ namespace UT_EF
                 ChampionEntity hecarim = new ChampionEntity { Name = "Hecarim", Class = ChampionClassEntity.Fighter, Bio = "", Icon = "", Image = "" };
                 ChampionEntity yuumi = new ChampionEntity { Name = "yuumi", Class = ChampionClassEntity.Mage, Bio = "", Icon = "", Image = "" };
 
-                // test contrainte 
-                ChampionEntity errorName = new ChampionEntity { Name = "c1832f35-f909-422d-a1fb-e0b79a62f562-fa7c5fe2-89b7-432e-9e0f-a5736445b381-3f75c0f8-de2e-4cf4-82d2-3d24411f6422-6b7e9196-3664-4813-b971-e9cc08a4b255-c1832f35-f909-422d-a1fb-e0b79a62f562-fa7c5fe2-89b7-432e-9e0f-a5736445b381-3f75c0f8-de2e-4cf4-82d2-3d24411f6422-6b7e9196-3664-4813-b971-e9cc08a4b255"
-                    , Class = ChampionClassEntity.Mage, Bio = "", Icon = "", Image = "" };
-
-                context.Champions.AddRange(sylas, hecarim, yuumi, errorName);
+                context.Champions.AddRange(sylas, hecarim, yuumi);
                 context.SaveChanges();
             }