gecko-dev/devtools/client/shared/test/browser_flame-graph-utils-05.js

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

// Tests that flame graph data is cached, and that the cache may be cleared.

var {FlameGraphUtils} = require("devtools/client/shared/widgets/FlameGraph");

add_task(function*() {
  yield addTab("about:blank");
  yield performTest();
  gBrowser.removeCurrentTab();
});

function* performTest() {
  let out1 = FlameGraphUtils.createFlameGraphDataFromThread(TEST_DATA);
  let out2 = FlameGraphUtils.createFlameGraphDataFromThread(TEST_DATA);
  is(out1, out2, "The outputted data is identical.")

  let out3 = FlameGraphUtils.createFlameGraphDataFromThread(TEST_DATA, { flattenRecursion: true });
  is(out2, out3, "The outputted data is still identical.");

  FlameGraphUtils.removeFromCache(TEST_DATA);
  let out4 = FlameGraphUtils.createFlameGraphDataFromThread(TEST_DATA, { flattenRecursion: true });
  isnot(out3, out4, "The outputted data is not identical anymore.");
}

var TEST_DATA = synthesizeProfileForTest([{
  frames: [{
    location: "A"
  }, {
    location: "A"
  }, {
    location: "A"
  }, {
    location: "B",
  }, {
    location: "B",
  }, {
    location: "C"
  }],
  time: 50,
}]);