QUnit.test(
    "JS error when stack ID's are strings in Highcharts 3D.(#4532)",
    function (assert) {
        var chart = $('#container')
            .highcharts({
                chart: {
                    type: 'column',
                    options3d: {
                        enabled: true,
                        alpha: 6,
                        beta: 15,
                        viewDistance: 0,
                        depth: 40
                    }
                },
                series: [
                    {
                        data: [5, 10],
                        stack: 'm1'
                    },
                    {
                        data: [2, 4],
                        stack: 'm1'
                    }
                ]
            })
            .highcharts();

        assert.strictEqual(
            chart.series[0].points && chart.series[0].points.length === 2,
            true,
            'No error.'
        );
    }
);
