Function testSingle

test/parallel/test-worker-message-port-transfer-closed.js:16–36

(closedPort, potentiallyOpenPort)

port2.onmessage = common.mustNotCall();

function testSingle(closedPort, potentiallyOpenPort) {
  assert.throws(common.mustCall(() => {
    potentiallyOpenPort.postMessage(null, [arrayBuf, closedPort]);
  }), common.mustCall((err) => {
    assert.strictEqual(err.name, 'DataCloneError');
    assert.strictEqual(err.message,
                       'MessagePort in transfer list is already detached');
    assert.strictEqual(err.code, 25);
    assert.ok(err instanceof Error);

    const DOMException = err.constructor;
    assert.ok(err instanceof DOMException);
    assert.strictEqual(DOMException.name, 'DOMException');

    return true;
  }));

  // arrayBuf must not be transferred, even though it is present earlier in the
  // transfer list than the closedPort.
  assert.strictEqual(arrayBuf.byteLength, 10);
}

function testBothClosed() {
  testSingle(port1, port2);