Function _makeWrapper

test/jasmine/tests/sankey_test.js:1139–1165

(eventType, mouseFn)

        afterEach(destroyGraphDiv);

        function _makeWrapper(eventType, mouseFn) {
            var posByElementType = {
                node: [410, 300],
                link: [450, 300]
            };

            return function(elType) {
                return new Promise(function(resolve, reject) {
                    const handler = (d) => {
                        Lib.clearThrottle();
                        const isNode = d.points[0].hasOwnProperty('sourceLinks');
                        const isExpectedType = (elType === 'node') ? isNode : !isNode;
                        if (!isExpectedType) {
                            gd.once(eventType, handler);
                            return;
                        }
                        resolve(d);
                    }
                    gd.once(eventType, handler);

                    mouseFn(posByElementType[elType]);
                    setTimeout(function() {
                        reject(eventType + ' did not get called!');
                    }, 100);
                });
            };
        }

        var _hover = _makeWrapper('plotly_hover', function(pos) {
            mouseEvent('mouseover', pos[0], pos[1]);