function checkContainerEntry(entry, identifier, last_element_id, beforeRender) {
  assert_equals(entry.entryType, 'container');
  assert_equals(entry.name, 'container-paints');
  assert_equals(entry.identifier, identifier, 'identifier does not match');
  if (last_element_id != null) {
    assert_equals(entry.lastPaintedElement.id, last_element_id);
  }

  assert_equals(entry.duration, 0, 'duration should be 0');
  assert_greater_than_equal(
      entry.firstRenderTime, beforeRender,
      'firstRenderTime greater than beforeRender');
  assert_greater_than_equal(
      entry.startTime, entry.firstRenderTime,
      'startTime greater than beforeRender');
  assert_greater_than_equal(
      performance.now(), entry.startTime, 'startTime bound by now()')
}

function checkContainerSize(entry, size) {
  assert_equals(entry.size, size);
}