suite.test('hasContent', function () {
   setupHtml('<span contentEditable="false">1</span>');
   const caretContainerBlock = CaretContainer.insertBlock('p', getRoot().firstChild, true);
   LegacyUnit.equal(CaretContainer.hasContent(caretContainerBlock), false);
   caretContainerBlock.insertBefore(document.createTextNode('a'), caretContainerBlock.firstChild);
   LegacyUnit.equal(CaretContainer.hasContent(caretContainerBlock), true);
 });
 suite.test('showCaretContainerBlock', function () {
   setupHtml('<span contentEditable="false">1</span>');
   const caretContainerBlock = CaretContainer.insertBlock('p', getRoot().firstChild, true);
   caretContainerBlock.insertBefore(document.createTextNode('a'), caretContainerBlock.firstChild);
   CaretContainer.showCaretContainerBlock(caretContainerBlock);
   LegacyUnit.equal(caretContainerBlock.outerHTML, '<p>a</p>');
 });
    Step.sync(function () {
      setupHtml('<span contentEditable="false">1</span><span contentEditable="false">2</span>');

      CaretContainer.insertBlock('p', getRoot().childNodes[1], true);
      Assertions.assertEq('Should be block container', true, CaretContainer.isCaretContainerBlock(getRoot().childNodes[1]));

      const pos = CaretContainerRemove.removeAndReposition(getRoot().childNodes[1], new CaretPosition(getRoot(), 3));
      Assertions.assertEq('Should be changed offset', 2, pos.offset());
      Assertions.assertDomEq('Should be unchanged container', Element.fromDom(getRoot()), Element.fromDom(pos.container()));
      Assertions.assertEq('Should not be block container', false, CaretContainer.isCaretContainerBlock(getRoot().childNodes[1]));
    })
 suite.test('insertBlock after element', function () {
   setupHtml('<span contentEditable="false">1</span>');
   LegacyUnit.equalDom(CaretContainer.insertBlock('p', getRoot().firstChild, false), getRoot().lastChild);
   LegacyUnit.equal(CaretContainer.isCaretContainerBlock(getRoot().lastChild), true);
 });
 suite.test('insertInline between elements', function () {
   setupHtml('<span contentEditable="false">1</span><span contentEditable="false">1</span>');
   LegacyUnit.equalDom(CaretContainer.insertBlock('p', getRoot().lastChild, true), getRoot().childNodes[1]);
   LegacyUnit.equal(CaretContainer.isCaretContainerBlock(getRoot().childNodes[1]), true);
 });