assertNoIntersect = function(a, b, opt_c) {
  'use strict';
  _validateArguments(2, arguments);
  const element = nonCommentArg(1, 2, arguments);
  const otherElement = nonCommentArg(2, 2, arguments);

  _assert(
      commentArg(1, arguments),
      !goog.testing.style.intersects(element, otherElement),
      'Elements should not intersect.');
}
Asserts that the two specified elements do not intersect.
@param {Element|string} a The first element or optionally the comment string.
@param {Element} b The second element or the first element if comment string
    is present.
@param {Element=} opt_c The second element if comment string is present.