diff --git a/src/hooks.server.test.ts b/src/hooks.server.test.ts
index 3fc4de1..e7a051c 100644
--- a/src/hooks.server.test.ts
+++ b/src/hooks.server.test.ts
@@ -1,6 +1,7 @@
 /* eslint-disable @typescript-eslint/no-explicit-any */
 import { describe, it, expect, vi, beforeEach, afterEach } from "vitest";
 import { handle } from "./hooks.server";
+import { mockCookies } from "$lib/tests/const";
 
 // Mock the startup service
 vi.mock("$lib/server/services/startup-service", () => ({
@@ -61,7 +62,7 @@ describe("hooks.server", () => {
       return {
         url: new URL("http://localhost/api/health"),
         request,
-        cookies: {} as any,
+        cookies: mockCookies as any,
         fetch: {} as any,
         getClientAddress: () => ip,
         locals: {},
@@ -131,7 +132,7 @@ describe("hooks.server", () => {
           "x-forwarded-for": "192.168.2.1", // Different IP for CORS tests
         },
       }),
-      cookies: {} as any,
+      cookies: mockCookies as any,
       fetch: {} as any,
       getClientAddress: () => "192.168.2.1",
       locals: {},
@@ -178,7 +179,7 @@ describe("hooks.server", () => {
           "x-forwarded-for": "192.168.3.1", // Different IP for security tests
         },
       }),
-      cookies: {} as any,
+      cookies: mockCookies as any,
       fetch: {} as any,
       getClientAddress: () => "192.168.3.1",
       locals: {},
diff --git a/src/lib/tests/const.ts b/src/lib/tests/const.ts
new file mode 100644
index 0000000..900d6a8
--- /dev/null
+++ b/src/lib/tests/const.ts
@@ -0,0 +1,5 @@
+export const mockCookies = {
+  get: () => undefined,
+  set: () => undefined,
+  delete: () => undefined,
+};
diff --git a/src/routes/api/auth/invite/__tests__/invite.test.ts b/src/routes/api/auth/invite/__tests__/invite.test.ts
index ce41de0..79c9dd7 100644
--- a/src/routes/api/auth/invite/__tests__/invite.test.ts
+++ b/src/routes/api/auth/invite/__tests__/invite.test.ts
@@ -29,6 +29,7 @@ vi.mock("$env/dynamic/private", () => ({
 import { TenantAdminService } from "$lib/server/services/tenant-admin-service";
 import { InviteService } from "$lib/server/services/invite-service";
 import { sendUserInviteEmail } from "$lib/server/email/email-service";
+import { mockCookies } from "$lib/tests/const";
 
 describe("POST /api/auth/invite", () => {
   const mockTenant = {
@@ -73,7 +74,7 @@ describe("POST /api/auth/invite", () => {
       url: new URL("http://localhost/api/auth/invite"),
       params: {},
       route: { id: "/api/auth/invite" } as any,
-      cookies: {} as any,
+      cookies: mockCookies as any,
       fetch: {} as any,
       getClientAddress: () => "127.0.0.1",
       isDataRequest: false,
diff --git a/src/routes/api/auth/session/__tests__/server.test.ts b/src/routes/api/auth/session/__tests__/server.test.ts
index 99ed6d3..614d6ba 100644
--- a/src/routes/api/auth/session/__tests__/server.test.ts
+++ b/src/routes/api/auth/session/__tests__/server.test.ts
@@ -2,6 +2,7 @@
 import { describe, it, expect, vi } from "vitest";
 import { GET } from "../+server";
 import type { RequestEvent } from "@sveltejs/kit";
+import { mockCookies } from "$lib/tests/const";
 
 // Mock the logger
 vi.mock("$lib/logger", () => ({
@@ -25,7 +26,7 @@ const createMockRequestEvent = (locals: any): RequestEvent =>
     url: new URL("http://localhost/api/auth/session"),
     params: {},
     route: { id: "/api/auth/session" },
-    cookies: {} as any,
+    cookies: mockCookies as any,
     fetch: fetch,
     getClientAddress: () => "127.0.0.1",
     isDataRequest: false,
diff --git a/src/routes/api/tenants/tenants.test.ts b/src/routes/api/tenants/tenants.test.ts
index 2685f74..9a5cb21 100644
--- a/src/routes/api/tenants/tenants.test.ts
+++ b/src/routes/api/tenants/tenants.test.ts
@@ -3,6 +3,7 @@ import { describe, it, expect, vi, beforeEach } from "vitest";
 import { POST } from "./+server.js";
 import { GET } from "./config/defaults/+server.js";
 import { ERRORS } from "$lib/errors.js";
+import { mockCookies } from "$lib/tests/const.js";
 
 // Mock the TenantAdminService
 vi.mock("$lib/server/services/tenant-admin-service", () => ({
@@ -67,7 +68,7 @@ describe("/api/tenants", () => {
         url: new URL("http://localhost"),
         params: {},
         route: { id: "" },
-        cookies: {} as any,
+        cookies: mockCookies as any,
         fetch: {} as any,
         getClientAddress: () => "",
         isDataRequest: false,
@@ -118,7 +119,7 @@ describe("/api/tenants", () => {
         url: new URL("http://localhost"),
         params: {},
         route: { id: "" },
-        cookies: {} as any,
+        cookies: mockCookies as any,
         fetch: {} as any,
         getClientAddress: () => "",
         isDataRequest: false,
@@ -167,7 +168,7 @@ describe("/api/tenants", () => {
         url: new URL("http://localhost"),
         params: {},
         route: { id: "" },
-        cookies: {} as any,
+        cookies: mockCookies as any,
         fetch: {} as any,
         getClientAddress: () => "",
         isDataRequest: false,
@@ -207,7 +208,7 @@ describe("/api/tenants", () => {
         url: new URL("http://localhost"),
         params: {},
         route: { id: "" },
-        cookies: {} as any,
+        cookies: mockCookies as any,
         fetch: {} as any,
         getClientAddress: () => "",
         isDataRequest: false,
@@ -247,7 +248,7 @@ describe("/api/tenants", () => {
         url: new URL("http://localhost"),
         params: {},
         route: { id: "" },
-        cookies: {} as any,
+        cookies: mockCookies as any,
         fetch: {} as any,
         getClientAddress: () => "",
         isDataRequest: false,
@@ -293,7 +294,7 @@ describe("/api/tenants", () => {
         url: new URL("http://localhost"),
         params: {},
         route: { id: "" },
-        cookies: {} as any,
+        cookies: mockCookies as any,
         fetch: {} as any,
         getClientAddress: () => "",
         isDataRequest: false,
@@ -321,7 +322,7 @@ describe("/api/tenants", () => {
         url: new URL("http://localhost"),
         params: {},
         route: { id: "" },
-        cookies: {} as any,
+        cookies: mockCookies as any,
         fetch: {} as any,
         getClientAddress: () => "",
         isDataRequest: false,