test: add a request-response test for MessageChannel

This commit adds a request-response test for MessageChannel. PR-URL: #21514 Reviewed-By: Michaël Zasso <[email protected]> Reviewed-By: Benjamin Gruenbaum <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Trivikram Kamat <[email protected]> Reviewed-By: Tiancheng "Timothy" Gu <[email protected]> Reviewed-By: James M Snell <[email protected]>
nodejs · Jun 30, 2018 · e7abde4 · e7abde4
1 parent 3d3dbae
commit e7abde4
Showing 1 changed file with 15 additions and 0 deletions.
diff --git a/test/parallel/test-message-port.js b/test/parallel/test-message-port.js
@@ -18,6 +18,21 @@ const { MessageChannel, MessagePort } = require('worker_threads');
   }));
 }
 
+{
+  const { port1, port2 } = new MessageChannel();
+
+  port1.onmessage = common.mustCall((message) => {
+    assert.strictEqual(message, 4);
+    port2.close(common.mustCall());
+  });
+
+  port1.postMessage(2);
+
+  port2.onmessage = common.mustCall((message) => {
+    port2.postMessage(message * 2);
+  });
+}
+
 {
   const { port1, port2 } = new MessageChannel();