;
        var inputContent = Polymer.dom(container.root).querySelector('.input-content');
        var line = Polymer.dom(container.root).querySelector('.underline');

        input.bindValue = '123123';

        assert.isTrue(container.invalid, 'invalid is true');
        assert.isTrue(inputContent.classList.contains('is-invalid'), 'label has invalid styling when input is invalid');
        assert.isTrue(line.classList.contains('is-invalid'), 'underline has invalid styling when input is invalid');
      });