For each plot, brush over the rectangle. Each one should say "Pass". Then resize the browser window. Each one should still say "Pass".
This application should be tested on both Retina and non-Retina displays.
Note: there are two types of resizes for renderCachedPlot. For small changes in size, it will simply scale the image in the browser. For large changes in size, the server will render a new plot and send it to the browser. Both types of resizes should keep a passing status.