test: make sure WriteWrap tests are actually async

PR-URL: https://github.com/nodejs/node/pull/18676
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

test/async-hooks/test-writewrap.js

@@ -47,6 +47,7 @@ function checkDestroyedWriteWraps(n, stage) {
 }
 
 function onconnection(conn) {
+  conn.write('hi');  // Let the client know we're ready.
   conn.resume();
   //
   // Server received client connection
@@ -60,15 +61,35 @@ function onconnect() {
   //
   checkDestroyedWriteWraps(0, 'client connected');
 
+  this.once('data', common.mustCall(ondata));
+}
+
+function ondata() {
   //
-  // Destroying client socket
+  // Writing data to client socket
   //
-  this.write('f'.repeat(128000), () => onafterwrite(this));
+  const write = () => {
+    let writeFinished = false;
+    this.write('f'.repeat(1280000), () => {
+      writeFinished = true;
+    });
+    process.nextTick(() => {
+      if (writeFinished) {
+        // Synchronous finish, write more data immediately.
+        writeFinished = false;
+        write();
+      } else {
+        // Asynchronous write; this is what we are here for.
+        onafterwrite(this);
+      }
+    });
+  };
+  write();
 }
 
 function onafterwrite(self) {
   checkDestroyedWriteWraps(1, 'client destroyed');
-  self.destroy();
+  self.end();
 
   checkDestroyedWriteWraps(1, 'client destroyed');
 

test/sequential/test-async-wrap-getasyncid.js

@@ -197,7 +197,6 @@ if (common.hasCrypto) { // eslint-disable-line crypto-check
     const handle = new tcp_wrap.TCP(tcp_wrap.constants.SOCKET);
     const req = new tcp_wrap.TCPConnectWrap();
     const sreq = new stream_wrap.ShutdownWrap();
-    const wreq = new stream_wrap.WriteWrap();
     testInitialized(handle, 'TCP');
     testUninitialized(req, 'TCPConnectWrap');
     testUninitialized(sreq, 'ShutdownWrap');
@@ -206,20 +205,25 @@ if (common.hasCrypto) { // eslint-disable-line crypto-check
       handle.close();
     });
 
+    req.oncomplete = common.mustCall(writeData);
+    function writeData() {
+      const wreq = new stream_wrap.WriteWrap();
       wreq.handle = handle;
-    wreq.oncomplete = common.mustCall(() => {
+      wreq.oncomplete = () => {
         handle.shutdown(sreq);
         testInitialized(sreq, 'ShutdownWrap');
-    });
+      };
-    wreq.async = true;
-
-    req.oncomplete = common.mustCall(() => {
-      // Use a long string to make sure the write happens asynchronously.
       const err = handle.writeLatin1String(wreq, 'hi'.repeat(100000));
       if (err)
         throw new Error(`write failed: ${getSystemErrorName(err)}`);
+      if (!wreq.async) {
+        testUninitialized(wreq, 'WriteWrap');
+        // Synchronous finish. Write more data until we hit an
+        // asynchronous write.
+        return writeData();
+      }
       testInitialized(wreq, 'WriteWrap');
-    });
+    }
     req.address = common.localhostIPv4;
     req.port = server.address().port;
     const err = handle.connect(req, req.address, req.port);