test_utils_deepEquals.js

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_("Make sure Utils.deepEquals correctly finds items that are deeply equal");

Services.prefs.setBoolPref("security.allow_eval_with_system_principal", true);

registerCleanupFunction(() => {

  Services.prefs.clearUserPref("security.allow_eval_with_system_principal");

});

function run_test() {

  let data =

    '[NaN, undefined, null, true, false, Infinity, 0, 1, "a", "b", {a: 1}, {a: "a"}, [{a: 1}], [{a: true}], {a: 1, b: 2}, [1, 2], [1, 2, 3]]';

  _("Generating two copies of data:", data);

  /* eslint-disable no-eval */

  let d1 = eval(data);

  let d2 = eval(data);

  /* eslint-enable no-eval */

  d1.forEach(function (a) {

    _("Testing", a, typeof a, JSON.stringify([a]));

    let numMatch = 0;

    d2.forEach(function (b) {

      if (Utils.deepEquals(a, b)) {

        numMatch++;

        _("Found a match", b, typeof b, JSON.stringify([b]));

});

    let expect = 1;

    if (isNaN(a) && typeof a == "number") {

      expect = 0;

      _("Checking NaN should result in no matches");

    _("Making sure we found the correct # match:", expect);

    _("Actual matches:", numMatch);

    Assert.equal(numMatch, expect);

});

  _("Make sure adding undefined properties doesn't affect equalness");

  let a = {};

  let b = { a: undefined };

  Assert.ok(Utils.deepEquals(a, b));

  a.b = 5;

  Assert.ok(!Utils.deepEquals(a, b));

  b.b = 5;

  Assert.ok(Utils.deepEquals(a, b));

  a.c = undefined;

  Assert.ok(Utils.deepEquals(a, b));

  b.d = undefined;

  Assert.ok(Utils.deepEquals(a, b));