gecko-dev/browser/devtools/performance/test/browser_profiler_tree-view-07.js

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

/**
 * Tests if the profiler's tree view implementation works properly and
 * has the correct 'root', 'parent', 'level' etc. accessors on child nodes.
 */

function spawnTest () {
  let { ThreadNode } = devtools.require("devtools/shared/profiler/tree-model");
  let { CallView } = devtools.require("devtools/shared/profiler/tree-view");

  let threadNode = new ThreadNode(gThread);
  // Don't display the synthesized (root) and the real (root) node twice.
  threadNode.calls = threadNode.calls[0].calls;
  let treeRoot = new CallView({ frame: threadNode });

  let container = document.createElement("vbox");
  container.id = "call-tree-container";
  treeRoot.attachTo(container);

  let A = treeRoot.getChild();
  let B = A.getChild();
  let D = B.getChild();

  is(D.root, treeRoot,
    "The .A.B.D node has the correct root.");
  is(D.parent, B,
    "The .A.B.D node has the correct parent.");
  is(D.level, 3,
    "The .A.B.D node has the correct level.");
  is(D.target.className, "call-tree-item",
    "The .A.B.D node has the correct target node.");
  is(D.container.id, "call-tree-container",
    "The .A.B.D node has the correct container node.");
}

let gThread = synthesizeProfileForTest([{
  time: 5,
  frames: [
    { category: 8,  location: "(root)" },
    { category: 8,  location: "A (http://foo/bar/baz:12)" },
    { category: 16, location: "B (http://foo/bar/baz:34)" },
    { category: 32, location: "C (http://foo/bar/baz:56)" }
  ]
}, {
  time: 5 + 1,
  frames: [
    { category: 8,  location: "(root)" },
    { category: 8,  location: "A (http://foo/bar/baz:12)" },
    { category: 16, location: "B (http://foo/bar/baz:34)" },
    { category: 64, location: "D (http://foo/bar/baz:78)" }
  ]
}, {
  time: 5 + 1 + 2,
  frames: [
    { category: 8,  location: "(root)" },
    { category: 8,  location: "A (http://foo/bar/baz:12)" },
    { category: 16, location: "B (http://foo/bar/baz:34)" },
    { category: 64, location: "D (http://foo/bar/baz:78)" }
  ]
}, {
  time: 5 + 1 + 2 + 7,
  frames: [
    { category: 8,   location: "(root)" },
    { category: 8,   location: "A (http://foo/bar/baz:12)" },
    { category: 128, location: "E (http://foo/bar/baz:90)" },
    { category: 256, location: "F (http://foo/bar/baz:99)" }
  ]
}]);