browser_webconsole_telemetry_object_expanded.js

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/* Any copyright is dedicated to the Public Domain.

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

// Tests the object_expanded telemetry event.

"use strict";

const TEST_URI = `data:text/html,<!DOCTYPE html><meta charset=utf8><script>

  console.log("test message", [1,2,3]);

</script>`;

const ALL_CHANNELS = Ci.nsITelemetry.DATASET_ALL_CHANNELS;

add_task(async function () {

  // Let's reset the counts.

  Services.telemetry.clearEvents();

  // Ensure no events have been logged

  const snapshot = Services.telemetry.snapshotEvents(ALL_CHANNELS, true);

  ok(!snapshot.parent, "No events have been logged for the main process");

  const hud = await openNewTabAndConsole(TEST_URI);

  const message = await waitFor(() =>

    findConsoleAPIMessage(hud, "test message")

);

  info("Click on the arrow icon to expand the node");

  const arrowIcon = message.querySelector(".arrow");

  arrowIcon.click();

  // let's wait until we have 2 arrows (i.e. the object was expanded)

  await waitFor(() => message.querySelectorAll(".arrow").length === 2);

  let events = getObjectExpandedEventsExtra();

  is(events.length, 1, "There was 1 event logged");

  const [event] = events;

  Assert.greater(

    Number(event.session_id),

0,

    "There is a valid session_id in the logged event"

);

  info("Click on the second arrow icon to expand the prototype node");

  const secondArrowIcon = message.querySelectorAll(".arrow")[1];

  secondArrowIcon.click();

  // let's wait until we have more than 2 arrows displayed, i.e. the prototype node was

  // expanded.

  await waitFor(() => message.querySelectorAll(".arrow").length > 2);

  events = getObjectExpandedEventsExtra();

  is(events.length, 1, "There was an event logged when expanding a child node");

  info("Click the first arrow to collapse the object");

  arrowIcon.click();

  // Let's wait until there's only one arrow visible, i.e. the node is collapsed.

  await waitFor(() => message.querySelectorAll(".arrow").length === 1);

  ok(!snapshot.parent, "There was no event logged when collapsing the node");

});

function getObjectExpandedEventsExtra() {

  // Retrieve and clear telemetry events.

  const snapshot = Services.telemetry.snapshotEvents(ALL_CHANNELS, true);

  const events = snapshot.parent.filter(

    event =>

      event[1] === "devtools.main" &&

      event[2] === "object_expanded" &&

      event[3] === "webconsole"

);

  // Since we already know we have the correct event, we only return the `extra` field

  // that was passed to it (which is event[5] here).

  return events.map(event => event[5]);