browser_net_throttle.js

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/* Any copyright is dedicated to the Public Domain.

   http://creativecommons.org/publicdomain/zero/1.0/ */

// Network throttling integration test.

"use strict";

requestLongerTimeout(2);

add_task(async function () {

  await throttleTest({ throttle: true, addLatency: true });

  await throttleTest({ throttle: true, addLatency: false });

  await throttleTest({ throttle: false, addLatency: false });

});

async function throttleTest(options) {

  const { throttle, addLatency } = options;

  const { monitor } = await initNetMonitor(SIMPLE_URL, { requestCount: 1 });

  const { store, windowRequire, connector } = monitor.panelWin;

  const { ACTIVITY_TYPE } = windowRequire(

    "devtools/client/netmonitor/src/constants"

);

  const { updateNetworkThrottling, triggerActivity } = connector;

  const { getSortedRequests } = windowRequire(

    "devtools/client/netmonitor/src/selectors/index"

);

  info(`Starting test... (throttle = ${throttle}, addLatency = ${addLatency})`);

  // When throttling, must be smaller than the length of the content

  // of SIMPLE_URL in bytes.

  const size = throttle ? 200 : 0;

  const latency = addLatency ? 100 : 0;

  const throttleProfile = {

    latency,

    download: size,

    upload: 10000,

};

  info("sending throttle request");

  await updateNetworkThrottling(true, throttleProfile);

  const wait = waitForNetworkEvents(monitor, 1);

  await triggerActivity(ACTIVITY_TYPE.RELOAD.WITH_CACHE_DISABLED);

  await wait;

  await waitForRequestData(store, ["eventTimings"]);

  const requestItem = getSortedRequests(store.getState())[0];

  const reportedOneSecond = requestItem.eventTimings.timings.receive > 1000;

  if (throttle) {

    ok(reportedOneSecond, "download reported as taking more than one second");

  } else {

    ok(!reportedOneSecond, "download reported as taking less than one second");

  await teardown(monitor);