test_imageloader: Add missing test for ImageIO
test_imageloader: Add missing test for ImageIO

rnixx/kivy,inclement/kivy,rnixx/kivy,akshayaurora/kivy,LogicalDash/kivy,inclement/kivy,LogicalDash/kivy,akshayaurora/kivy,rnixx/kivy,akshayaurora/kivy,kivy/kivy,matham/kivy,kivy/kivy,kivy/kivy,matham/kivy,matham/kivy,LogicalDash/kivy,matham/kivy,inclement/kivy,LogicalDash/kivy