fix: test

Author: dotob

packages/pg-pool/index.js

@@ -402,7 +402,7 @@ class Pool extends EventEmitter {
       return response.result
     }
 
-    // allow plain text query without values
+    // allow plain text query without values, but callback
     if (typeof values === 'function') {
       cb = values
       values = undefined

packages/pg/lib/client.js

@@ -589,7 +589,7 @@ class Client extends EventEmitter {
           throw err
         })
       } else {
-        if (!(typeof values === 'function')) {
+        if (!(typeof query.callback === 'function')) {
           throw new Error('callback is not a function')
         }
       }