Codebasis als Dateien ins Arbeitsrepo statt als Gitlink

QuellCode/CentronERP war nur als Gitlink (Submodul-Referenz auf 79c1142)
getrackt, ohne .gitmodules und ohne erreichbares Remote. Der
Untersuchungsgegenstand der Versuchsreihe war damit nicht reproduzierbar
gesichert: Ein Klon haette ein leeres Verzeichnis erhalten, und die Belege
der 3.287 Anforderungen waeren nicht ueberpruefbar gewesen.

Umstellung:
- Historie nach c:\DEV\CentronERP_git_snapshot_79c1142 ausgelagert
  (vollstaendig lesbar, enthaelt 79c1142 und Vorgaenger 89ccfd6)
- Gitlink aus dem Index entfernt
- Dateiinhalt aufgenommen: 24.557 Dateien, rund 333 MB

Die verschachtelte .gitignore der Codebasis gilt weiter, Build-Artefakte
bleiben ausgeschlossen. Details in Versuche/Versuch_01/_Codebasis-Nachweis.md

QuellCode/CentronERP/tests/backend/Centron.Tests.DAO/Mappings/Accounts/AccountCustomerMapsTest.cs

@@ -0,0 +1,116 @@
+using Centron.BusinessLogic.WebServices;
+using Centron.DAO.Mappings.Accounts;
+using Centron.DAO.Mappings.Sales.Receipts;
+using Centron.Data.Entities.Accounts;
+using Centron.Data.Entities.Sales.Receipts;
+using Centron.Tests.BL.DatabaseMappings;
+using CentronSoftware.Centron.WebServices.Entities.Accounts;
+using CentronSoftware.Centron.WebServices.Entities.Sales.Receipts.ReceiptReceiver;
+using FluentNHibernate.Cfg;
+using FluentNHibernate.Cfg.Db;
+using JetBrains.Annotations;
+using NHibernate;
+using NHibernate.Tool.hbm2ddl;
+
+namespace Centron.Tests.DAO.Mappings.Accounts;
+
+[TestSubject(typeof(AccountCustomerMaps))]
+public class AccountCustomerMapsTest
+{
+
+    [Fact]
+    public void ReceiptReceiverCanBeMapped()
+    {
+        var session = CreateSession();
+        var receipt = new AccountCustomer
+        {
+            I3D = 1,
+            Number = 2,
+            ReceiptReceiverDelivery = new ReceiptReceiver()
+                {
+                    CompanyName = "Company",
+                    Department = "Department",
+                    ContactName = "Contact",
+                    ContactDepartment = "C Department",
+                    Street = "Street",
+                    HouseNumber = "1",
+                    Zip = "12345",
+                    City = "City",
+                    Country = "Country",
+                    CountryI3D = 4,
+                    PostOfficeBox = "",
+                    HasPostOfficeBox = false,
+                    AdditionalAddressSupplement = ""
+                },
+            ReceiptReceiverInvoice = new ReceiptReceiver()
+                {
+                    CompanyName = "Company Invoice",
+                    Department = "Department",
+                    ContactName = "Contact",
+                    ContactDepartment = "C Department",
+                    Street = "Street Invoice",
+                    HouseNumber = "1",
+                    Zip = "12345",
+                    City = "City",
+                    Country = "Country",
+                    CountryI3D = 4,
+                    PostOfficeBox = "",
+                    HasPostOfficeBox = false,
+                    AdditionalAddressSupplement = ""
+                }
+            ,
+        };
+        session.Save(receipt);
+        session.Flush();
+        
+        var savedEntity = session.Get<AccountCustomer>(1);
+        Assert.NotNull(savedEntity);
+        var dto = ObjectMapper.Map<AccountCustomer, AccountCustomerDTO>(savedEntity);
+        Assert.NotNull(dto);
+        Assert.Equal("Company Invoice", dto.ReceiptReceiverInvoice.CompanyName);
+        var savedReceiptReceivers = session.Query<ReceiptReceiver>().ToList();
+        Assert.Equal(2, savedReceiptReceivers.Count);
+        
+        dto.ReceiptReceiverDelivery = new ReceiptReceiverDTO()
+        {
+            CompanyName = "New Company Delivery",
+            Department = "Department",
+            ContactName = "Contact",
+            ContactDepartment = "C Department",
+            Street = "New Street Delivery",
+            HouseNumber = "1",
+            Zip = "12345",
+            City = "City",
+            Country = "Country",
+            CountryI3D = 4,
+            PostOfficeBox = "",
+            HasPostOfficeBox = false,
+            AdditionalAddressSupplement = ""
+        };
+        savedEntity.ReceiptReceiverDelivery = null;
+        savedEntity = ObjectMapper.Map(dto, savedEntity);
+        session.Save(savedEntity);
+        session.Flush();
+        var newSavedEntity = session.Get<AccountCustomer>(1);
+        Assert.NotNull(newSavedEntity);
+        dto = ObjectMapper.Map<AccountCustomer, AccountCustomerDTO>(newSavedEntity);
+        Assert.NotNull(dto);
+        Assert.Equal("New Company Delivery", dto.ReceiptReceiverDelivery.CompanyName);
+        savedReceiptReceivers = session.Query<ReceiptReceiver>().ToList();
+        Assert.Equal(3, savedReceiptReceivers.Count);
+    }
+    
+    public ISession CreateSession()
+    {
+        var fluentConfiguration = Fluently.Configure()
+                .Database(SQLiteConfiguration.Standard.InMemory)
+                .Mappings(m => m.FluentMappings.Add<AccountCustomerMapsForTest>())
+                .Mappings(m => m.FluentMappings.Add<ReceiptReceiverMaps>())
+            ;
+        ISessionFactory sessionFactory = fluentConfiguration.BuildSessionFactory();
+        ISession session = sessionFactory.OpenSession();
+
+        new SchemaExport(fluentConfiguration.BuildConfiguration()).Execute(true, true, false, session.Connection, Console.Out);
+        return session;
+    }
+}