fix: add expect import to REST_test.js for jest-style assertions

Author: kobenguyent

test/rest/REST_test.js

@@ -1,6 +1,7 @@
 import path from 'path'
 import fs from 'fs'
 import { fileURLToPath } from 'url'
+import { expect } from 'expect'
 
 const __filename = fileURLToPath(import.meta.url)
 const __dirname = path.dirname(__filename)