Add test for runtime model generation with proxies

Part of #24902

test/EFCore.Design.Tests/Scaffolding/Internal/CSharpRuntimeModelCodeGeneratorTest.cs

@@ -216,6 +216,47 @@ public class LazyPropertyEntity
  public LazyConstructorEntity LazyConstructorEntity { get; set; }
  }
 
+ [ConditionalFact]
+ public void Lazy_loading_proxies()
+ => Test(
+ new LazyLoadingProxiesContext(),
+ new CompiledModelCodeGenerationOptions(),
+ assertModel: model =>
+ {
+ Assert.Equal(
+ typeof(ILazyLoader), model.FindEntityType(typeof(LazyProxiesEntity1))!.GetServiceProperties().Single().ClrType);
+ Assert.Equal(
+ typeof(ILazyLoader), model.FindEntityType(typeof(LazyProxiesEntity1))!.GetServiceProperties().Single().ClrType);
+ });
+
+ public class LazyLoadingProxiesContext : ContextBase
+ {
+ protected override void OnModelCreating(ModelBuilder modelBuilder)
+ {
+ base.OnModelCreating(modelBuilder);
+
+ modelBuilder.Entity<LazyProxiesEntity1>();
+ }
+
+ protected override void OnConfiguring(DbContextOptionsBuilder options)
+ => base.OnConfiguring(options.UseLazyLoadingProxies());
+ }
+
+ public class LazyProxiesEntity1
+ {
+ public int Id { get; set; }
+
+ public virtual LazyProxiesEntity2 ReferenceNavigation { get; set; }
+ }
+
+ public class LazyProxiesEntity2
+ {
+ public ILazyLoader Loader { get; set; }
+
+ public int Id { get; set; }
+ public virtual ICollection<LazyProxiesEntity1> CollectionNavigation { get; set; }
+ }
+
  [ConditionalFact]
  public void Throws_for_query_filter()
  => Test(
@@ -4776,6 +4817,7 @@ protected void Test(
  BuildReference.ByName("Microsoft.EntityFrameworkCore.Abstractions"),
  BuildReference.ByName("Microsoft.EntityFrameworkCore.Cosmos"),
  BuildReference.ByName("Microsoft.EntityFrameworkCore.InMemory"),
+ BuildReference.ByName("Microsoft.EntityFrameworkCore.Proxies"),
  BuildReference.ByName("Microsoft.EntityFrameworkCore.Relational"),
  BuildReference.ByName("Microsoft.EntityFrameworkCore.Sqlite"),
  BuildReference.ByName("Microsoft.EntityFrameworkCore.Sqlite.NetTopologySuite"),