/* Any copyright is dedicated to the Public Domain.
   http://creativecommons.org/publicdomain/zero/1.0/ */
"use strict";

/**
 * Tests that the js flamegraphs get rerendered when toggling `flatten-tree-recursion`.
 */

const { SIMPLE_URL } = require("devtools/client/performance/test/helpers/urls");
const {
  UI_FLATTEN_RECURSION_PREF,
} = require("devtools/client/performance/test/helpers/prefs");
const {
  initPerformanceInNewTab,
  teardownToolboxAndRemoveTab,
} = require("devtools/client/performance/test/helpers/panel-utils");
const {
  startRecording,
  stopRecording,
} = require("devtools/client/performance/test/helpers/actions");
const {
  once,
} = require("devtools/client/performance/test/helpers/event-utils");

add_task(async function() {
  const { panel } = await initPerformanceInNewTab({
    url: SIMPLE_URL,
    win: window,
  });

  const {
    EVENTS,
    PerformanceController,
    DetailsView,
    JsFlameGraphView,
  } = panel.panelWin;
  const {
    FlameGraphUtils,
  } = require("devtools/client/shared/widgets/FlameGraph");

  Services.prefs.setBoolPref(UI_FLATTEN_RECURSION_PREF, true);

  await startRecording(panel);
  await stopRecording(panel);

  let rendered = once(JsFlameGraphView, EVENTS.UI_JS_FLAMEGRAPH_RENDERED);
  await DetailsView.selectView("js-flamegraph");
  await rendered;

  const thread1 = PerformanceController.getCurrentRecording().getProfile()
    .threads[0];
  const rendering1 = FlameGraphUtils._cache.get(thread1);

  ok(thread1, "The samples were retrieved from the controller.");
  ok(rendering1, "The rendering data was cached.");

  rendered = once(JsFlameGraphView, EVENTS.UI_JS_FLAMEGRAPH_RENDERED);
  Services.prefs.setBoolPref(UI_FLATTEN_RECURSION_PREF, false);
  await rendered;
  ok(true, "JsFlameGraphView rerendered when toggling flatten-tree-recursion.");

  const thread2 = PerformanceController.getCurrentRecording().getProfile()
    .threads[0];
  const rendering2 = FlameGraphUtils._cache.get(thread2);

  is(
    thread1,
    thread2,
    "The same samples data should be retrieved from the controller (1)."
  );
  isnot(
    rendering1,
    rendering2,
    "The rendering data should be different because other options were used (1)."
  );

  rendered = once(JsFlameGraphView, EVENTS.UI_JS_FLAMEGRAPH_RENDERED);
  Services.prefs.setBoolPref(UI_FLATTEN_RECURSION_PREF, true);
  await rendered;
  ok(
    true,
    "JsFlameGraphView rerendered when toggling back flatten-tree-recursion."
  );

  const thread3 = PerformanceController.getCurrentRecording().getProfile()
    .threads[0];
  const rendering3 = FlameGraphUtils._cache.get(thread3);

  is(
    thread2,
    thread3,
    "The same samples data should be retrieved from the controller (2)."
  );
  isnot(
    rendering2,
    rendering3,
    "The rendering data should be different because other options were used (2)."
  );

  await teardownToolboxAndRemoveTab(panel);
});