Function opener

test/jasmine/tests/svg_text_utils_test.js:429–434

(dy)

            textCases.forEach(function(textCase) {
                var node = mockTextSVGElement(textCase);
                function opener(dy) {
                    return '<tspan class="line" dy="' + dy + 'em" x="0" y="0">' +
                        '<tspan style="font-weight:bold">' +
                        '<tspan style="font-style:italic">' +
                        '\u200b<tspan style="font-size:70%" dy="-0.6em">';
                }
                var closer = '</tspan><tspan dy="0.42em">\u200b</tspan>' +
                    '</tspan></tspan></tspan>';
                expect(node.html()).toBe(