onnxruntime/js/web/test/e2e/common.js

// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.

'use strict';

function assert(cond) {
  if (!cond) throw new Error();
}

function createSession(ort, options) {
  return ort.InferenceSession.create('./model.onnx', options || {});
}

function delay(ms) {
  return new Promise(resolve => setTimeout(resolve, ms));
}

async function testFunction(ort, options) {
  setupEnvFlags(ort);

  const session = await createSession(ort, options);

  const dataA = Float32Array.from([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]);
  const dataB = Float32Array.from([10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120]);

  const fetches =
      await session.run({a: new ort.Tensor('float32', dataA, [3, 4]), b: new ort.Tensor('float32', dataB, [4, 3])});

  const c = fetches.c;

  assert(c instanceof ort.Tensor);
  assert(c.dims.length === 2 && c.dims[0] === 3 && c.dims[1] === 3);
  assert(c.data[0] === 700);
  assert(c.data[1] === 800);
  assert(c.data[2] === 900);
  assert(c.data[3] === 1580);
  assert(c.data[4] === 1840);
  assert(c.data[5] === 2100);
  assert(c.data[6] === 2460);
  assert(c.data[7] === 2880);
  assert(c.data[8] === 3300);
}

// parse command line arguments. to make it simple, we assign the arguments to global object.
if (typeof __karma__ !== 'undefined' && __karma__.config.args) {
  for (const arg of __karma__.config.args) {
    const [key, value] = arg.split('=', 2);
    globalThis['__ort_arg_' + key] = value;
  }
}

function setupEnvFlags(ort) {
  if (typeof __ort_arg_num_threads === 'undefined') {
    globalThis.__ort_arg_num_threads = '1';
  }
  const numThreads = parseInt(__ort_arg_num_threads);
  console.log(`numThreads = ${numThreads}`);
  ort.env.wasm.numThreads = numThreads;

  if (typeof __ort_arg_proxy === 'undefined') {
    globalThis.__ort_arg_proxy = '0';
  }
  const proxy = __ort_arg_proxy === '1';
  console.log(`proxy = ${proxy}`);
  ort.env.wasm.proxy = proxy;
}

// delay 1000ms before each test to avoid "Failed to fetch" error in karma.
beforeEach(async () => {
  await delay(1000);
  console.log('----------------------------------------');
});

if (typeof module === 'object') {
  module.exports = testFunction;
}