test: minor fix to how cookies are passed around (#55259)

api/jest.utils.test.ts

@@ -1,4 +1,4 @@
-import { getCsrfToken } from './jest.utils';
+import { getCsrfToken, getCookies } from './jest.utils';
 
 const fakeCookies = [
   '_csrf=123; Path=/; HttpOnly; SameSite=Strict',
@@ -17,3 +17,18 @@ describe('getCsrfToken', () => {
     ).toBeUndefined();
   });
 });
+
+describe('setCookiesToCookies', () => {
+  test('returns a string of cookies', () => {
+    expect(getCookies(fakeCookies)).toEqual(
+      '_csrf=123; csrf_token=abc-123; sessionId=CV-abc.123'
+    );
+  });
+  test('handles bare cookies', () => {
+    expect(getCookies(['_csrf=123'])).toEqual('_csrf=123');
+  });
+
+  test('throws an error if the cookies are malformed', () => {
+    expect(() => getCookies(['_csrf'])).toThrow();
+  });
+});

api/jest.utils.ts

@@ -34,6 +34,13 @@ export const getCsrfToken = (setCookies: string[]): string | undefined => {
 
 export const ORIGIN = 'https://www.freecodecamp.org';
 
+export const getCookies = (setCookies: string[]): string => {
+  for (const cookie of setCookies) {
+    expect(cookie).toMatch(/.*=.*/);
+  }
+  return setCookies.map(cookie => cookie.split(';')[0]).join('; ');
+};
+
 export function superRequest(
   resource: string,
   config: {
@@ -48,7 +55,7 @@ export function superRequest(
   const req = requests[method](resource).set('Origin', ORIGIN);
 
   if (setCookies) {
-    void req.set('Cookie', setCookies);
+    void req.set('Cookie', getCookies(setCookies));
   }
 
   const csrfToken = (setCookies && getCsrfToken(setCookies)) ?? '';