diff --git a/tests/helpers/api_mock.ts b/tests/helpers/api_mock.ts
index 686f32d..e7fb68a 100644
--- a/tests/helpers/api_mock.ts
+++ b/tests/helpers/api_mock.ts
@@ -1,47 +1,94 @@
-// Mock de fetch() pour les tests
+// Mock de fetch() pour les tests — supporte méthodes HTTP et status codes
+
+type HttpMethod = "GET" | "POST" | "PUT" | "DELETE";
+
+export interface MockRoute {
+  method?: HttpMethod;
+  status?: number;
+  body?: unknown;
+  headers?: Record<string, string>;
+}
 
 // deno-lint-ignore no-explicit-any
 let _originalFetch: ((input: any, init?: any) => Promise<Response>) | null =
   null;
+let _calls: { url: string; method: string; body?: unknown }[] = [];
 
 /**
- * Remplace globalThis.fetch par un mock qui retourne des réponses
- * pré-configurées selon l'URL.
+ * Remplace globalThis.fetch par un mock configurable.
  *
- * @param routes - Map URL pattern → données de réponse (sera sérialisé en JSON)
+ * Usage simple (GET 200 par défaut) :
+ *   mockFetch({ "/students": studentsData })
+ *
+ * Usage avancé (méthode + status) :
+ *   mockFetch({ "/students": { method: "POST", status: 201, body: newStudent } })
  */
 export function mockFetch(
-  routes: Record<string, unknown>,
+  routes: Record<string, unknown | MockRoute>,
 ): void {
   _originalFetch = globalThis.fetch;
+  _calls = [];
 
-  globalThis.fetch = (
+  globalThis.fetch = async (
     input: string | URL | Request,
-    _init?: RequestInit,
+    init?: RequestInit,
   ): Promise<Response> => {
     const url = typeof input === "string"
       ? input
       : input instanceof URL
       ? input.toString()
       : input.url;
+    const method = (init?.method ?? "GET").toUpperCase();
 
-    for (const [pattern, data] of Object.entries(routes)) {
-      if (url.includes(pattern)) {
-        return Promise.resolve(
-          new Response(JSON.stringify(data), {
-            status: 200,
-            headers: { "Content-Type": "application/json" },
-          }),
-        );
+    // Parse le body si présent
+    let reqBody: unknown = undefined;
+    if (init?.body) {
+      try {
+        reqBody = JSON.parse(init.body as string);
+      } catch {
+        reqBody = init.body;
       }
     }
 
-    return Promise.resolve(
-      new Response(JSON.stringify({ error: "Not Found" }), {
-        status: 404,
-        headers: { "Content-Type": "application/json" },
-      }),
-    );
+    _calls.push({ url, method, body: reqBody });
+
+    for (const [pattern, config] of Object.entries(routes)) {
+      if (!url.includes(pattern)) continue;
+
+      // Config simple : la valeur est directement le body de réponse (GET 200)
+      if (!isRouteConfig(config)) {
+        return new Response(JSON.stringify(config), {
+          status: 200,
+          headers: { "Content-Type": "application/json" },
+        });
+      }
+
+      // Config avancée : vérifier la méthode si spécifiée
+      if (config.method && config.method !== method) continue;
+
+      const status = config.status ?? 200;
+
+      // 204 : pas de body
+      if (status === 204) {
+        return new Response(null, { status: 204 });
+      }
+
+      return new Response(
+        config.body !== undefined ? JSON.stringify(config.body) : null,
+        {
+          status,
+          headers: {
+            "Content-Type": "application/json",
+            ...config.headers,
+          },
+        },
+      );
+    }
+
+    return new Response(JSON.stringify({ error: "Not Found" }), {
+      status: 404,
+      headers: { "Content-Type": "application/json" },
+    });
   };
 }
 
@@ -53,4 +100,20 @@ export function restoreFetch(): void {
     globalThis.fetch = _originalFetch;
     _originalFetch = null;
   }
+  _calls = [];
+}
+
+/**
+ * Retourne la liste des appels fetch interceptés.
+ */
+export function getFetchCalls(): { url: string; method: string; body?: unknown }[] {
+  return [..._calls];
+}
+
+function isRouteConfig(value: unknown): value is MockRoute {
+  if (typeof value !== "object" || value === null || Array.isArray(value)) {
+    return false;
+  }
+  const v = value as Record<string, unknown>;
+  return "status" in v || "method" in v || "body" in v;
 }
diff --git a/tests/helpers/fixtures.ts b/tests/helpers/fixtures.ts
index e63920e..67ece22 100644
--- a/tests/helpers/fixtures.ts
+++ b/tests/helpers/fixtures.ts
@@ -1,14 +1,16 @@
-// Types et données de test pour l'API PolyMPR
+// Types et données de test alignés sur l'API REST PolyMPR
+
+// --- Types ---
 
 export interface Student {
   numEtud: number;
   nom: string;
   prenom: string;
-  idPromo: number;
+  idPromo: string;
 }
 
 export interface Promotion {
-  idPromo: number;
+  idPromo: string;
   annee: string;
 }
 
@@ -19,14 +21,14 @@ export interface Prof {
 }
 
 export interface Module {
-  id: number;
+  id: string;
   nom: string;
 }
 
 export interface Note {
   note: number;
   numEtud: number;
-  idModule: number;
+  idModule: string;
 }
 
 export interface UE {
@@ -35,16 +37,16 @@ export interface UE {
 }
 
 export interface UeModule {
-  idModule: number;
+  idModule: string;
   idUE: number;
-  idPromo: number;
+  idPromo: string;
   coeff: number;
 }
 
 export interface Enseignement {
   idProf: number;
-  idModule: number;
-  idPromo: number;
+  idModule: string;
+  idPromo: string;
 }
 
 export interface Ajustement {
@@ -53,17 +55,37 @@ export interface Ajustement {
   valeur: number;
 }
 
+export interface ImportResult {
+  imported: number;
+  errors: { line: number; message: string }[];
+}
+
+export interface ApiError {
+  error: string;
+}
+
 // --- Fixtures ---
 
 export const students: Student[] = [
-  { numEtud: 1, nom: "Dupont", prenom: "Alice", idPromo: 1 },
-  { numEtud: 2, nom: "Martin", prenom: "Bob", idPromo: 1 },
-  { numEtud: 3, nom: "Durand", prenom: "Claire", idPromo: 2 },
+  { numEtud: 21212006, nom: "Dupont", prenom: "Jean", idPromo: "4AFISE25/26" },
+  {
+    numEtud: 21212007,
+    nom: "Martin",
+    prenom: "Alice",
+    idPromo: "4AFISE25/26",
+  },
+  {
+    numEtud: 21212008,
+    nom: "Durand",
+    prenom: "Claire",
+    idPromo: "3AFISE25/26",
+  },
 ];
 
 export const promotions: Promotion[] = [
-  { idPromo: 1, annee: "2025-2026" },
-  { idPromo: 2, annee: "2024-2025" },
+  { idPromo: "4AFISE25/26", annee: "2025" },
+  { idPromo: "3AFISE25/26", annee: "2025" },
+  { idPromo: "JIA4A2526", annee: "2025" },
 ];
 
 export const profs: Prof[] = [
@@ -72,36 +94,44 @@ export const profs: Prof[] = [
 ];
 
 export const modules: Module[] = [
-  { id: 1, nom: "Mathématiques" },
-  { id: 2, nom: "Informatique" },
-  { id: 3, nom: "Physique" },
+  { id: "JIN702C", nom: "Optimisation" },
+  { id: "JIN703C", nom: "Informatique" },
+  { id: "JIN704C", nom: "Physique" },
 ];
 
 export const notes: Note[] = [
-  { note: 15, numEtud: 1, idModule: 1 },
-  { note: 12, numEtud: 1, idModule: 2 },
-  { note: 18, numEtud: 2, idModule: 1 },
-  { note: 9, numEtud: 3, idModule: 3 },
+  { note: 15.5, numEtud: 21212006, idModule: "JIN702C" },
+  { note: 12.0, numEtud: 21212006, idModule: "JIN703C" },
+  { note: 18.0, numEtud: 21212007, idModule: "JIN702C" },
+  { note: 9.0, numEtud: 21212008, idModule: "JIN704C" },
 ];
 
 export const ues: UE[] = [
-  { id: 1, nom: "Sciences fondamentales" },
-  { id: 2, nom: "Sciences appliquées" },
+  { id: 1, nom: "UE Informatique" },
+  { id: 2, nom: "UE Mathématiques" },
 ];
 
 export const ueModules: UeModule[] = [
-  { idModule: 1, idUE: 1, idPromo: 1, coeff: 3 },
-  { idModule: 2, idUE: 2, idPromo: 1, coeff: 4 },
-  { idModule: 3, idUE: 1, idPromo: 2, coeff: 2 },
+  { idModule: "JIN702C", idUE: 1, idPromo: "4AFISE25/26", coeff: 3.0 },
+  { idModule: "JIN703C", idUE: 2, idPromo: "4AFISE25/26", coeff: 4.0 },
+  { idModule: "JIN704C", idUE: 1, idPromo: "3AFISE25/26", coeff: 2.0 },
 ];
 
 export const enseignements: Enseignement[] = [
-  { idProf: 1, idModule: 1, idPromo: 1 },
-  { idProf: 2, idModule: 2, idPromo: 1 },
-  { idProf: 1, idModule: 3, idPromo: 2 },
+  { idProf: 1, idModule: "JIN702C", idPromo: "4AFISE25/26" },
+  { idProf: 2, idModule: "JIN703C", idPromo: "4AFISE25/26" },
+  { idProf: 1, idModule: "JIN704C", idPromo: "3AFISE25/26" },
 ];
 
 export const ajustements: Ajustement[] = [
-  { numEtud: 1, idUE: 1, valeur: 0.5 },
-  { numEtud: 3, idUE: 1, valeur: -1 },
+  { numEtud: 21212006, idUE: 1, valeur: 13.25 },
+  { numEtud: 21212008, idUE: 1, valeur: 11.0 },
 ];
+
+// --- Réponses d'erreur standard ---
+
+export const ERROR_NOT_FOUND: ApiError = { error: "Ressource introuvable" };
+export const ERROR_CONFLICT: ApiError = { error: "Ressource déjà existante" };
+export const ERROR_BAD_REQUEST: ApiError = { error: "Requête invalide" };
+export const ERROR_UNAUTHORIZED: ApiError = { error: "Non authentifié" };
+export const ERROR_FORBIDDEN: ApiError = { error: "Accès interdit" };