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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
/* eslint-env node */
const fs = require("fs");
const path = require("path");
module.exports = async function (context, commands) {
context.log.info(
"Starting a pageload for which we will first enable the dev tools network throttler"
);
await commands.navigate("about:blank");
await commands.wait.byTime(1000);
// Load the throttling script
let throttler_script = null;
let throttlerScriptPath = path.join(
`${path.resolve(__dirname)}`,
"utils",
"NetworkThrottlingUtils.js"
);
try {
throttler_script = fs.readFileSync(throttlerScriptPath, "utf8");
} catch (error) {
throw Error(
`Failed to load network throttler script ${throttlerScriptPath}`
);
}
// Create a throttler and configure the network
let usage = `
let networkThrottler = new NetworkThrottler();
let throttleData = {
latencyMean: 50,
latencyMax: 50,
downloadBPSMean: 250000,
downloadBPSMax: 250000,
uploadBPSMean: 250000,
uploadBPSMax: 250000
};
networkThrottler.start(throttleData);
`;
throttler_script += usage;
commands.js.runPrivileged(throttler_script);
await commands.measure.start(url);
context.log.info("Throttled pageload test finished.");
return true;
};