test(express-mongo-sanitize): pin the <5 express folder the plugin supports

Author: BridgeAR

packages/datadog-instrumentations/test/express-mongo-sanitize.spec.js

@@ -22,9 +22,10 @@ describe('express-mongo-sanitize', () => {
       })
 
       before((done) => {
-        // Highest version of express that supports express-mongo-sanitize is <5
-        // This is defined in externals.js
-        const express = require('../../../versions/express').get()
+        // Highest version of express that supports express-mongo-sanitize is <5 (express 5 makes req.query a
+        // getter-only property). The unversioned `versions/express` folder tracks the latest express (now 5.x), so
+        // pin the <5 range that externals.js installs for this plugin.
+        const express = require('../../../versions/express@>=4 <5').get()
         const expressMongoSanitize = require(`../../../versions/express-mongo-sanitize@${version}`).get()
         const app = express()