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test/parallel/test-worker-message-port-arraybuffer.js

@@ -0,0 +1,26 @@
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+
+const { MessageChannel } = require('worker_threads');
+
+{
+  const { port1, port2 } = new MessageChannel();
+
+  const arrayBuffer = new ArrayBuffer(40);
+  const typedArray = new Uint32Array(arrayBuffer);
+  typedArray[0] = 0x12345678;
+
+  port1.postMessage(typedArray, [ arrayBuffer ]);
+  assert.strictEqual(arrayBuffer.byteLength, 0);
+  // Transferring again should throw a DataCloneError.
+  assert.throws(() => port1.postMessage(typedArray, [ arrayBuffer ]), {
+    code: 25,
+    name: 'DataCloneError',
+  });
+
+  port2.on('message', common.mustCall((received) => {
+    assert.strictEqual(received[0], 0x12345678);
+    port2.close(common.mustCall());
+  }));
+}