nd(child);

            assert(child.parentNode === container);
            assert(container.childNodes.length === 2);
            assert(container.childNodes[1] === child);
          });

          test('Appends a text node', () => {
            const container = document.createElement('div');
            container.appendChild(document.createElement('div'));

            container.append('This is some text.');

            assert(container.childNodes.length === 2);
            assert(container.childNodes[1