test: fix test-heapdump-zlib

PR-URL: #34499 Refs: #34048 Reviewed-By: Richard Lau <[email protected]> Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Rich Trott <[email protected]>

Author: puzpuzpuz

test/pummel/test-heapdump-zlib.js

@@ -1,17 +1,28 @@
 // Flags: --expose-internals
 'use strict';
-require('../common');
+constcommon=require('../common');
 const{ validateSnapshotNodes }=require('../common/heap');
 constzlib=require('zlib');
 
 validateSnapshotNodes('Node / ZlibStream',[]);
-// eslint-disable-next-line no-unused-vars
-constgunzip=zlib.createGunzip();
+
+constgzip=zlib.createGzip();
 validateSnapshotNodes('Node / ZlibStream',[
 {
 children: [
-{node_name: 'Zlib',edge_name: 'wrapped'},
-{node_name: 'Node / zlib_memory',edge_name: 'zlib_memory'}
+{node_name: 'Zlib',edge_name: 'wrapped'}
+// No entry for memory because zlib memory is initialized lazily.
 ]
 }
 ]);
+
+gzip.write('hello world',common.mustCall(()=>{
+validateSnapshotNodes('Node / ZlibStream',[
+{
+children: [
+{node_name: 'Zlib',edge_name: 'wrapped'},
+{node_name: 'Node / zlib_memory',edge_name: 'zlib_memory'}
+]
+}
+]);
+}));