frontend/src/lib/auth/SignupForm.test.ts

@@ -163,6 +163,18 @@ describe('SignupForm', () => {
 		expect(screen.getByText('Ungültige E-Mail-Adresse')).toBeInTheDocument();
 	});
 
+	it('shows all three validation errors when form submitted empty', async () => {
+		const user = userEvent.setup();
+		render(SignupForm);
+
+		const submit = screen.getByRole('button', { name: /konto erstellen/i });
+		await user.click(submit);
+
+		expect(screen.getByText('Name ist erforderlich')).toBeInTheDocument();
+		expect(screen.getByText('Ungültige E-Mail-Adresse')).toBeInTheDocument();
+		expect(screen.getByText('Mindestens 8 Zeichen')).toBeInTheDocument();
+	});
+
 	it('renders placeholders on inputs', () => {
 		render(SignupForm);
 		expect(screen.getByPlaceholderText('z.B. Sarah')).toBeInTheDocument();