Test project creator association - Fix #17

gtd-server-main/src/test/java/fr/alma/gtd/server/main/donnees/ProjectTest.java

 package fr.alma.gtd.server.main.donnees;
 
+import fr.alma.gtd.server.core.IParticipant;
 import fr.alma.gtd.server.core.IProject;
 import fr.alma.gtd.server.core.ITask;
+import fr.alma.gtd.server.persistence.data.Utilisateur;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
@@ -110,5 +112,20 @@ public class ProjectTest {
         assertEquals(this.project,t4.getProjectContainer());
     }
 
+    @Test
+    public void testCreatorAssociation() {
+        IParticipant u1 = new Utilisateur();
+        IParticipant u2 = new Utilisateur();
+
+        this.project.setCreator(u1);
+
+        assertEquals(u1,this.project.getCreator());
+
+        this.project.setCreator(u2);
+
+        assertEquals(u2,this.project.getCreator());
+
+    }
+
 
 }