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/Centron.Tests.EndToEnd/TicketTests/Ticket125719/Ticket125719.cs

@@ -0,0 +1,95 @@
+using Centron.BusinessLogic;
+using Centron.BusinessLogic.WebServices.Administration.Company;
+using Centron.BusinessLogic.WebServices.Administration.MasterData;
+using Centron.Data.WebServices.Administration.MandatoryArea;
+using Centron.Interfaces.BL;
+using Centron.Tests.EndToEnd.Infrastructure;
+using CentronSoftware.Centron.WebServices.Entities.BranchArea;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Xunit.Abstractions;
+
+namespace Centron.Tests.EndToEnd.NumberGroupTests.Ticket125719
+{
+    public class Ticket125719 : EndToEndTest
+    {
+        // the problem that we had was, when we create a new mandant and a new branch to it
+        // the number groups for that branch would be created, but never shown in the UI
+        // the reason for it was taht we were trying to get the branch number groups where 
+        // current value was != null and != 0, which was of course not the case since 
+        // the new number groups are created with value null for current and the list would be empty
+
+        // test workflow:
+        // 1. create new mandant 
+        // 2. create new branch for mandant
+        // 3. create number groups for the new branch
+        // 4. get number groups for the new branch 
+
+        public Ticket125719(ITestOutputHelper testOutputHelper)
+            : base(testOutputHelper)
+        {
+        }
+
+        public override void Execute()
+        {
+            var mandantI3D = this.CreateNewMandant();
+            var branchI3D = this.CreateNewBranchForNewMandant(mandantI3D);
+            this.GetNumberGroupsForNewBranch(mandantI3D, branchI3D);
+        }
+
+        private int CreateNewMandant()
+        {
+            using (var session = new BLSession())
+            {
+                var newMandant = new MandatoryExtendedDTO
+                {
+                    Mandator = "Ticket 125719",
+                    State = 1
+                };
+
+                var mandant = session.GetBL<MandatorWebServiceBL>().SaveMandatoryExtended(newMandant).ThrowIfError();
+
+                return mandant.I3D;
+            }
+        }
+
+        private int CreateNewBranchForNewMandant(int mandantI3D)
+        {
+            using (var session = new BLSession())
+            {
+                var country = session.GetBL<CountryWebServiceBL>().GetDefaultCountry();
+                var federalState = session.GetBL<FederalStateWebServiceBL>().GetFederalStates().FirstOrDefault();
+
+                var newBranch = new BranchDTO
+                {
+                    Name = "Branch for Ticket 125719",
+                    MandatorI3D = mandantI3D,
+                    CountryI3D = country.I3D,
+                    FederalState = federalState,
+                    CreatedDate = DateTime.Now,
+                    IsDefault = 0,
+                    Status = 1,
+                };
+
+                var branch = session.GetBL<BranchWebServiceBL>().SaveBranchDetails(newBranch).ThrowIfError();
+
+                return branch.I3D;
+            }
+        }
+
+        private void GetNumberGroupsForNewBranch(int mandantI3D, int branchI3D)
+        {
+            using (var session = new BLSession())
+            {
+                session.GetBL<MandatorWebServiceBL>().CreateNumberGroups(mandantI3D, branchI3D).ThrowIfError();
+                
+                var numberGroups = session.GetBL<BranchWebServiceBL>().GetNumberGroupsForBranch(mandantI3D, branchI3D).ThrowIfError();
+
+                this.Verifier.Verify($"GetNumberGroupsForBranch", numberGroups);
+            }
+        }
+    }
+}