              initialTreeDepth: 3,
                        animationDurationUpdate: 750
                    }
                ]
            };

            const chart1 = testHelper.create(echarts, 'main1', {
                title: [
                    'test the radial tree',
                ],
                option: option1
            });
        });
        </script>

        <script>
            require([
                'echarts',
            ], function (echarts) {
                const option2 = {
