test: update contact api test to mock nodemailer

tests/api-contact.test.ts

@@ -6,6 +6,16 @@ const { mockCreate, mockSendEmail } = vi.hoisted(() => ({
   mockSendEmail: vi.fn(),
 }));
 
+// Mock Nodemailer
+const mockSendMail = vi.fn();
+vi.mock("nodemailer", () => ({
+  default: {
+    createTransport: vi.fn().mockReturnValue({
+      sendMail: mockSendMail,
+    }),
+  },
+}));
+
 vi.mock("payload", () => ({
   getPayload: vi.fn().mockResolvedValue({
     create: mockCreate,
@@ -101,7 +111,7 @@ describe("Contact API Integration", () => {
 
     // But it actually does NOTHING internally
     expect(mockCreate).not.toHaveBeenCalled();
-    expect(mockSendEmail).not.toHaveBeenCalled();
+    expect(mockSendMail).not.toHaveBeenCalled();
   });
 
   it("should successfully save to Payload and send emails", async () => {
@@ -140,10 +150,10 @@ describe("Contact API Integration", () => {
     });
 
     // 2. Verify Email Sending
-    // Note: sendEmail is called twice (Notification + User Confirmation)
+    // Note: sendMail is called twice (Notification + User Confirmation)
-    expect(mockSendEmail).toHaveBeenCalledTimes(2);
+    expect(mockSendMail).toHaveBeenCalledTimes(2);
 
-    expect(mockSendEmail).toHaveBeenNthCalledWith(
+    expect(mockSendMail).toHaveBeenNthCalledWith(
       1,
       expect.objectContaining({
         subject: "Kontaktanfrage von Jane Doe",
@@ -151,7 +161,7 @@ describe("Contact API Integration", () => {
       }),
     );
 
-    expect(mockSendEmail).toHaveBeenNthCalledWith(
+    expect(mockSendMail).toHaveBeenNthCalledWith(
       2,
       expect.objectContaining({
         to: "jane@example.com",