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Refs: https://github.com/nodejs/node/pull/32745#discussion_r406564208 PR-URL: https://github.com/nodejs/node/pull/32815 Reviewed-By: Zeyu Yang <himself65@outlook.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Richard Lau <riclau@uk.ibm.com> Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
34 lines
1.2 KiB
JavaScript
34 lines
1.2 KiB
JavaScript
'use strict';
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const common = require('../common');
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const assert = require('assert');
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const { MessageChannel, receiveMessageOnPort } = require('worker_threads');
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const { port1, port2 } = new MessageChannel();
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const message1 = { hello: 'world' };
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const message2 = { foo: 'bar' };
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// Make sure receiveMessageOnPort() works in a FIFO way, the same way it does
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// when we’re using events.
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assert.deepStrictEqual(receiveMessageOnPort(port2), undefined);
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port1.postMessage(message1);
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port1.postMessage(message2);
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assert.deepStrictEqual(receiveMessageOnPort(port2), { message: message1 });
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assert.deepStrictEqual(receiveMessageOnPort(port2), { message: message2 });
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assert.deepStrictEqual(receiveMessageOnPort(port2), undefined);
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assert.deepStrictEqual(receiveMessageOnPort(port2), undefined);
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// Make sure message handlers aren’t called.
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port2.on('message', common.mustNotCall());
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port1.postMessage(message1);
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assert.deepStrictEqual(receiveMessageOnPort(port2), { message: message1 });
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port1.close();
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for (const value of [null, 0, -1, {}, []]) {
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assert.throws(() => receiveMessageOnPort(value), {
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name: 'TypeError',
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code: 'ERR_INVALID_ARG_TYPE',
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message: 'The "port" argument must be a MessagePort instance'
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});
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}
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