Revert "Fix test import statements"

This reverts commit 25300aa.

The previous commit changed import statements for firebase-admin
and firebase-functions to default imports, which caused the extension
deployment to fail with runtime errors (Cannot read properties of
undefined (reading 'auth')). The correct usage is to use namespace
imports (import * as admin from 'firebase-admin'). This revert
restores the working import style and fixes the deployment issue.

Author: trentrand

firestore-stripe-payments/functions/__tests__/helpers/collections.ts

@@ -1,4 +1,4 @@
-import admin from 'firebase-admin';
+import * as admin from 'firebase-admin';
 import { DocumentReference, DocumentData } from '@google-cloud/firestore';
 import {
   waitForDocumentToExistInCollection,

firestore-stripe-payments/functions/__tests__/helpers/utils.ts

@@ -1,4 +1,4 @@
-import admin from 'firebase-admin';
+import * as admin from 'firebase-admin';
 import { Query, DocumentData } from '@google-cloud/firestore';
 import { UserRecord } from 'firebase-functions/v1/auth';
 

firestore-stripe-payments/functions/__tests__/tests/checkoutsessions/createCheckoutSession.test.ts

@@ -1,4 +1,4 @@
-import admin from 'firebase-admin';
+import * as admin from 'firebase-admin';
 import { DocumentReference, DocumentData } from '@google-cloud/firestore';
 import { UserRecord } from 'firebase-functions/v1/auth';
 import setupEmulator from '../../helpers/setupEmulator';

firestore-stripe-payments/functions/__tests__/tests/checkoutsessions/subscriptionCheckoutSessions.test.ts

@@ -1,4 +1,4 @@
-import admin from 'firebase-admin';
+import * as admin from 'firebase-admin';
 import runCheckout from '../../helpers/forms/runCheckout';
 
 import { UserRecord } from 'firebase-functions/v1/auth';

firestore-stripe-payments/functions/__tests__/tests/customers/createCustomer.test.ts

@@ -1,4 +1,4 @@
-import admin from 'firebase-admin';
+import * as admin from 'firebase-admin';
 import { DocumentData } from '@google-cloud/firestore';
 
 import setupEmulator from '../../helpers/setupEmulator';

firestore-stripe-payments/functions/__tests__/tests/customers/customerDataDeleted.test.ts

@@ -1,4 +1,4 @@
-import admin from 'firebase-admin';
+import * as admin from 'firebase-admin';
 import { DocumentData } from '@google-cloud/firestore';
 import setupEmulator from './../../helpers/setupEmulator';
 import { findCustomer } from './../../helpers/stripeApi/customers';

firestore-stripe-payments/functions/__tests__/tests/portalLinks/createPortalLink.test.ts

@@ -1,4 +1,4 @@
-import admin from 'firebase-admin';
+import * as admin from 'firebase-admin';
 import { DocumentData } from '@google-cloud/firestore';
 import functions from 'firebase-functions-test';
 import * as cloudFunctions from '../../../src';

firestore-stripe-payments/functions/__tests__/tests/webhookevents/handleWebhookEvents.test.ts

@@ -1,4 +1,4 @@
-import admin from 'firebase-admin';
+import * as admin from 'firebase-admin';
 import { DocumentData } from '@google-cloud/firestore';
 import { Product } from '../../../src/interfaces';
 import setupEmulator from '../../helpers/setupEmulator';

firestore-stripe-payments/functions/__tests__/tests/webhookevents/subscriptions.test.ts

@@ -1,4 +1,4 @@
-import admin from 'firebase-admin';
+import * as admin from 'firebase-admin';
 import { DocumentData } from '@google-cloud/firestore';
 import { Subscription } from '../../../src/interfaces';
 import setupEmulator from '../../helpers/setupEmulator';

firestore-stripe-payments/functions/src/index.ts

@@ -14,9 +14,9 @@
  * limitations under the License.
  */
 
-import admin from 'firebase-admin';
+import * as admin from 'firebase-admin';
 import { getEventarc } from 'firebase-admin/eventarc';
-import functions from 'firebase-functions';
+import * as functions from 'firebase-functions';
 import Stripe from 'stripe';
 import {
   Product,