add hw2

node_modules/thread-stream/test/post-message.test.js

@@ -0,0 +1,24 @@
+'use strict'
+
+const { test } = require('tap')
+const { join } = require('path')
+const { once } = require('events')
+const { MessageChannel } = require('worker_threads')
+const ThreadStream = require('..')
+
+test('message events emitted on the stream are posted to the worker', async function (t) {
+  t.plan(1)
+
+  const { port1, port2 } = new MessageChannel()
+  const stream = new ThreadStream({
+    filename: join(__dirname, 'on-message.js'),
+    sync: false
+  })
+  t.teardown(() => {
+    stream.end()
+  })
+
+  stream.emit('message', { text: 'hello', takeThisPortPlease: port1 }, [port1])
+  const [confirmation] = await once(port2, 'message')
+  t.equal(confirmation, 'received: hello')
+})