yoga/javascript/tests/Facebook.Yoga/YGMeasureCacheTest.js

/**
 * Copyright (c) 2014-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

var Yoga = Yoga || require("../../sources/entry-" + process.env.TEST_ENTRY);

it("measure_once_single_flexible_child", function () {
  var root = Yoga.Node.create();
  root.setFlexDirection(Yoga.FLEX_DIRECTION_ROW);
  root.setAlignItems(Yoga.ALIGN_FLEX_START);
  root.setWidth(100);
  root.setHeight(100);

  var measureCounter = getMeasureCounterMax(Yoga);

  var root_child0 = Yoga.Node.create();
  root_child0.setMeasureFunc(measureCounter.inc);
  root_child0.setFlexGrow(1);
  root.insertChild(root_child0, 0);

  root.calculateLayout(Yoga.UNDEFINED, Yoga.UNDEFINED, Yoga.DIRECTION_LTR);

  console.assert(1 === measureCounter.get(), "1 === measureCounter.get()");

  if (typeof root !== "undefined")
    root.freeRecursive();

  (typeof gc !== "undefined") && gc();
  console.assert(0 === Yoga.getInstanceCount(), "0 === Yoga.getInstanceCount() (" + Yoga.getInstanceCount() + ")");
});