test: Update init tests

Author: AbhiPrasad

packages/cloudflare/test/sdk.test.ts

@@ -1,13 +1,17 @@
 import { describe, expect, test, vi } from 'vitest';
 
 import * as SentryCore from '@sentry/core';
+import { CloudflareClient } from '../src/client';
 import { init } from '../src/sdk';
 
 describe('init', () => {
   test('should call initAndBind with the correct options', () => {
     const initAndBindSpy = vi.spyOn(SentryCore, 'initAndBind');
-    init({});
+    const client = init({});
 
-    expect(initAndBindSpy).toHaveBeenCalledWith(expect.any(Function), expect.any(Object));
+    expect(initAndBindSpy).toHaveBeenCalledWith(CloudflareClient, expect.any(Object));
+
+    expect(client).toBeDefined();
+    expect(client).toBeInstanceOf(CloudflareClient);
   });
 });