Function _assert

test/jasmine/tests/hover_label_test.js:2200–2213

(msg, exp)

        it('hovermode:x common label should fit in the graph div width', function (done) {
            function _assert(msg, exp) {
                return function () {
                    var label = d3Select('g.axistext');
                    if (label.node()) {
                        expect(label.text()).toBe(exp.txt, 'common label text| ' + msg);
                        expect(Drawing.getTranslate(label).x).toBeWithin(exp.lx, 5, 'common label translate-x| ' + msg);

                        var startOfPath = label.select('path').attr('d').split('L')[0];
                        expect(startOfPath).not.toBe('M0,0', 'offset start of label path| ' + msg);
                    } else {
                        fail('fail to generate common hover label');
                    }
                };
            }

            function _hoverLeft() {
                return _hover(gd, 30, 300);