@tensorflow/tfjs-core/dist/worker_node_test.js

/**
 * @license
 * Copyright 2019 Google LLC. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * =============================================================================
 */
import { describeWithFlags, HAS_NODE_WORKER } from './jasmine_util';
import { expectArraysClose } from './test_util';
// tslint:disable:no-require-imports
const fn2String = (fn) => {
    const funcStr = '(' + fn.toString() + ')()';
    return funcStr;
};
// The source code of a web worker.
const workerTestNode = () => {
    // Web worker scripts in node live relative to the CWD, not to the dir of the
    // file that spawned them.
    const tf = require('@tensorflow/tfjs');
    const { parentPort } = require('worker_threads');
    let a = tf.tensor1d([1, 2, 3]);
    const b = tf.tensor1d([3, 2, 1]);
    a = a.add(b);
    parentPort.postMessage({ data: a.dataSync() });
};
describeWithFlags('computation in worker (node env)', HAS_NODE_WORKER, () => {
    // tslint:disable-next-line: ban
    it('tensor in worker', (done) => {
        const { Worker } = require('worker_threads');
        const worker = new Worker(fn2String(workerTestNode), { eval: true });
        // tslint:disable-next-line:no-any
        worker.on('message', (msg) => {
            const data = msg.data;
            expectArraysClose(data, [4, 4, 4]);
            done();
        });
    });
});
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