diff --git a/EPAServeur.Tests/Services/DemandeDelegationServiceTests.cs b/EPAServeur.Tests/Services/DemandeDelegationServiceTests.cs
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+++ b/EPAServeur.Tests/Services/DemandeDelegationServiceTests.cs
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+using EPAServeur.Context;
+using EPAServeur.Exceptions;
+using EPAServeur.IServices;
+using EPAServeur.Models.EP;
+using EPAServeur.Services;
+using IO.Swagger.ApiCollaborateur;
+using IO.Swagger.DTO;
+using IO.Swagger.Enum;
+using Microsoft.EntityFrameworkCore;
+using NUnit.Framework;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace EPAServeur.Tests.Services
+{
+	[TestFixture]
+	public class DemandeDelegationServiceTests
+	{
+		#region variables
+		private EpContext context;
+		private ICollaborateurApi collaborateurApi;
+		#endregion
+
+		#region Setup
+		[SetUp]
+		public void SetUp()
+		{
+			// Utilisation d'une base de données en mémoire
+			var optionBuider = new DbContextOptionsBuilder<EpContext>()
+				.UseInMemoryDatabase("server_ep_test")
+				.Options;
+
+			context = new EpContext(optionBuider);
+
+			context.Database.EnsureDeleted();
+			context.Database.EnsureCreated();
+			context.SaveChanges();
+
+			// Ajout du jeu de données pour les tests
+			//TO DO
+
+			// Détache les entités du context car la base de données InMemory créé des conflits
+			// entre les clés primaires lors d'un Update ou d'un Insert   
+			foreach (var entity in context.ChangeTracker.Entries())
+			{
+				entity.State = EntityState.Detached;
+			}
+			collaborateurApi = new CollaborateurApi();
+		}
+		#endregion
+
+
+		#region Test RecuperationDemandeDelegation
+		[TestCase("771f9129-5610-4f4b-a8eb-902a98d722be", 0)]
+		[TestCase("01ee85ff-d7f3-494b-b1de-26ced8fbfa0d", 3)]
+		[TestCase("0afd1573-de75-4e5b-bfcb-1985259d8370", 1)]
+		[TestCase("de98a866-736f-4295-a669-92a8694e2ee3", 0)]
+		[TestCase("17b87130-0e9d-4b78-b0e3-a11e5f70318d", 2)]
+		public async Task RecupererDemandesDelegation_OK(Guid? idReferent, int count)
+		{
+			IDemandeDelegationService demandeDelegationService = new DemandeDelegationService(collaborateurApi, context);
+			IEnumerable<DemandeDelegationDTO> demandesDelegation = await demandeDelegationService.RecupererDemandesDelegation(idReferent);
+			foreach (DemandeDelegationDTO demandeDelegation in demandesDelegation)
+			{
+				Assert.AreEqual(idReferent, demandeDelegation.Referent.Id);
+				Assert.AreEqual(demandeDelegation.EtatDemande, EtatDemande.EnAttente);
+			}
+			Assert.AreEqual(count, demandesDelegation.Count());
+		}
+
+
+		[Test]
+		public void RecupererDemandeDelegation_ReferentNotFound()
+		{
+			Guid? idReferent = new Guid();
+			IDemandeDelegationService demandeDelegationService = new DemandeDelegationService(collaborateurApi, context);
+			AsyncTestDelegate exception = () => demandeDelegationService.RecupererDemandesDelegation(idReferent);
+			Assert.ThrowsAsync(typeof(ReferentNotFoundException), exception);
+		}
+
+		#endregion
+
+		#region Reponse demande delegation
+		[TestCase(1)]
+		[TestCase(2)]
+		[TestCase(5)]
+		public async Task UpdateDemandeDelegation_ReponsePositive(long id)
+		{
+			IDemandeDelegationService demandeDelegationService = new DemandeDelegationService(collaborateurApi, context);
+			DemandeDelegation demandeDelegation = await context.DemandeDelegations.FindAsync(id);
+			long idEp = demandeDelegation.IdEP;
+			
+			Ep ep = await context.Ep.FindAsync(idEp);
+			Guid idReferent = demandeDelegation.IdReferent;
+			Assert.AreNotEqual(ep.IdReferent, idReferent);
+
+			DemandeDelegationDTO demandeDTO = new DemandeDelegationDTO()
+			{
+				Id = id,
+				DateDemande = demandeDelegation.DateDemande,
+				RaisonDemande = demandeDelegation.RaisonDemande,
+				DateReponse = DateTime.Now,
+				EtatDemande = EtatDemande.Validee
+			};
+			DemandeDelegationDTO reponse = await demandeDelegationService.UpdateDemandeDelegation(id, demandeDTO);
+			demandeDelegation = await context.DemandeDelegations.FindAsync(id);
+			Assert.IsNull(reponse);
+			Assert.IsNull(demandeDelegation);
+			ep = await context.Ep.FindAsync(idEp);
+			Assert.AreEqual(ep.IdReferent, idReferent);
+		}
+
+		[TestCase(3)]
+		[TestCase(4)]
+		[TestCase(6)]
+		public async Task UpdateDemandeDelegation_ReponseNegative(long id)
+		{
+			IDemandeDelegationService demandeDelegationService = new DemandeDelegationService(collaborateurApi, context);
+			DemandeDelegation demandeDelegation = await context.DemandeDelegations.FindAsync(id);
+			long idEp = demandeDelegation.IdEP;
+
+			Ep ep = await context.Ep.FindAsync(idEp);
+			Guid idReferent = demandeDelegation.IdReferent;
+			Assert.AreNotEqual(ep.IdReferent, idReferent);
+
+			DemandeDelegationDTO demandeDTO = new DemandeDelegationDTO()
+			{
+				Id = id,
+				DateDemande = demandeDelegation.DateDemande,
+				RaisonDemande = demandeDelegation.RaisonDemande,
+				DateReponse = DateTime.Now,
+				EtatDemande = EtatDemande.Rejetee,
+				RaisonRefus = "exemple raison refus"
+			};
+			DemandeDelegationDTO reponse = await demandeDelegationService.UpdateDemandeDelegation(id, demandeDTO);
+			Assert.IsNotNull(reponse);
+			Assert.AreEqual(reponse.EtatDemande, EtatDemande.Rejetee);
+			ep = await context.Ep.FindAsync(idEp);
+			Assert.AreNotEqual(ep.IdReferent, idReferent);
+		}
+
+		[TestCase(-5, EtatDemande.Validee, null)]
+		[TestCase(-5, EtatDemande.Rejetee, "exemple refus")]
+		[TestCase(0, EtatDemande.Validee, null)]
+		[TestCase(0, EtatDemande.Rejetee, "exemple refus")]
+		[TestCase(10, EtatDemande.Validee, null)]
+		[TestCase(10, EtatDemande.Rejetee, "exemple refus")]
+		public void UpdateDemandeDelegation_DemandeNonExistante(long id, EtatDemande etatDemande, string raisonRefus)
+		{
+			IDemandeDelegationService demandeDelegationService = new DemandeDelegationService(collaborateurApi, context);
+			DemandeDelegationDTO demandeDTO = new DemandeDelegationDTO()
+			{
+				Id = id,
+				DateDemande = DateTime.Now,
+				RaisonDemande = "exemple raison demande",
+				DateReponse = DateTime.Now,
+				EtatDemande = etatDemande,
+				RaisonRefus = raisonRefus
+			};
+
+			AsyncTestDelegate exception = () => demandeDelegationService.UpdateDemandeDelegation(id, demandeDTO);
+			Assert.ThrowsAsync(typeof(DemandeDelegationNotFoundException), exception);
+		}
+
+		[TestCase(1, 4,EtatDemande.Validee, null)]
+		[TestCase(2, 3,EtatDemande.Rejetee, "exemple refus")]
+		[TestCase(3, 2,EtatDemande.Validee, null)]
+		[TestCase(4, 1,EtatDemande.Rejetee, "exemple refus")]
+		public void UpdateDemandeDelegation_DemandeIncompatible(long id, long idIncompatible, EtatDemande etatDemande, string raisonRefus)
+		{
+			IDemandeDelegationService demandeDelegationService = new DemandeDelegationService(collaborateurApi, context);
+			DemandeDelegationDTO demandeDTO = new DemandeDelegationDTO()
+			{
+				Id = id,
+				DateDemande = DateTime.Now,
+				RaisonDemande = "exemple raison demande",
+				DateReponse = DateTime.Now,
+				EtatDemande = etatDemande,
+				RaisonRefus = raisonRefus
+			};
+
+			AsyncTestDelegate exception = () => demandeDelegationService.UpdateDemandeDelegation(idIncompatible, demandeDTO);
+			Assert.ThrowsAsync(typeof(DemandeDelegationIncompatibleException), exception);
+		}
+
+
+
+		[TestCase(7, EtatDemande.EnAttente, null)]
+		[TestCase(7, EtatDemande.EnAttente, "raison")]
+		[TestCase(7, EtatDemande.EnAttente, "")]
+		[TestCase(7, EtatDemande.Rejetee, null)]
+		[TestCase(7, EtatDemande.Rejetee, "")]
+		public async Task UpdateDemandeDelegation_DemandeInvalid(long id, EtatDemande etatDemande, string raisonRefus)
+		{
+			IDemandeDelegationService demandeDelegationService = new DemandeDelegationService(collaborateurApi, context);
+			DemandeDelegation demandeDelegation = await context.DemandeDelegations.FindAsync(id);
+			long idEp = demandeDelegation.IdEP;
+
+			Ep ep = await context.Ep.FindAsync(idEp);
+			Guid idReferent = demandeDelegation.IdReferent;
+			Assert.AreNotEqual(ep.IdReferent, idReferent);
+
+			DemandeDelegationDTO demandeDTO = new DemandeDelegationDTO()
+			{
+				Id = id,
+				DateDemande = demandeDelegation.DateDemande,
+				RaisonDemande = demandeDelegation.RaisonDemande,
+				DateReponse = DateTime.Now,
+				EtatDemande = etatDemande,
+				RaisonRefus = raisonRefus
+			};
+
+
+
+		}
+		#endregion
+	}
+
+}
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