Add a failing test of custom fonts.
Add a failing test of custom fonts.

bjpop/saveSvgAsPng,flamilton/saveSvgAsPng,cool-Blue/saveSvgAsPng,zky829/saveSvgAsPng,flamilton/saveSvgAsPng,raiyankamal/saveSvgAsPng,bjpop/saveSvgAsPng,raiyankamal/saveSvgAsPng,cool-Blue/saveSvgAsPng,zky829/saveSvgAsPng,exupero/saveSvgAsPng,exupero/saveSvgAsPng