move test for lua into separate resource file

resources/test.lua

+
+local r = { left = 10, top = 10, right = 100, bottom = 80 }
+local x = 0;
+
+local paint = Sk.newPaint();
+paint:setAntiAlias(true);
+
+local image     -- = Sk.loadImage('/skia/sailboat.jpg');
+function setImageFilename(filename)
+    image = Sk.loadImage(filename)
+end
+
+
+local color = {a = 1, r = 1, g = 0, b = 0};
+
+function rnd(range) 
+   return math.random() * range;
+end 
+
+rndX = function () return rnd(640) end 
+rndY = function () return rnd(480) end 
+
+function draw_rand_path(canvas);
+   if not path_paint then 
+       path_paint = Sk.newPaint();
+       path_paint:setAntiAlias(true);
+   end 
+   path_paint:setColor({a = 1, r = math.random(), g = math.random(), b = math.random() });
+
+   local path = Sk.newPath();
+   path:moveTo(rndX(), rndY());
+   for i = 0, 50 do 
+       path:quadTo(rndX(), rndY(), rndX(), rndY());
+   end 
+   canvas:drawPath(path, path_paint);
+
+   paint:setColor{a=1,r=0,g=0,b=1};
+   local align = { 'left', 'center', 'right' };
+   paint:setTextSize(30);
+   for k, v in next, align do 
+       paint:setTextAlign(v);
+       canvas:drawText('Hamburgefons', 320, 200 + 30*k, paint);
+   end 
+end 
+
+function onStartup()
+    local paint = Sk.newPaint();
+    paint:setColor{a=1, r=1, g=0, b=0};
+    if false then
+        local doc = Sk.newDocumentPDF('/skia/trunk/test.pdf');
+        local canvas = doc:beginPage(72*8.5, 72*11);
+        canvas:drawText('Hello Lua', 300, 300, paint);
+        doc:close();
+        doc = nil;
+    end
+end 
+
+function onDrawContent(canvas)
+    draw_rand_path(canvas);
+    color.g = x / 100;
+    paint:setColor(color) 
+    canvas:translate(x, 0);
+    canvas:drawOval(r, paint) 
+    x = x + 1;
+    local r2 = {}
+    r2.left = x;
+    r2.top = r.bottom + 50;
+    r2.right = r2.left + image:width() * 1;
+    r2.bottom = r2.top + image:height() * 1;
+    canvas:drawImageRect(image, nil, r2, 0.75);
+    if x > 200 then x = 0 end;
+end
+
+onStartup()