update tests again

python/im.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+convert $1 \
+    -background Red -density 300 \
+    -font /usr/share/fonts/truetype/msttcorefonts/Arial.ttf \
+    -pointsize 12 -gravity south -splice 0x150 \
+    -gravity southwest -annotate +50+50 "left corner" \
+    -gravity southeast -annotate +50+50 'right corner' \
+    +repage \
+    $2

python/try12.py

@@ -2,24 +2,20 @@
 
 import sys
 
-#import logging
-#logging.basicConfig(level = logging.DEBUG)
-
 from gi.repository import Vips 
 from vips8 import vips
 
-im = Vips.Image.new_from_file(sys.argv[1])
-
-im = im | im
+im = Vips.Image.new_from_file(sys.argv[1], access = Vips.Access.SEQUENTIAL)
 
 black = Vips.Image.black(im.width, 150)
-red = black + [255, 0, 0]
-left = Vips.Image.text("Left corner").embed(50, 50, im.width, 150)
-right_text = Vips.Image.text("Right corner")
+red = (black + [255, 0, 0]).cast(Vips.BandFormat.UCHAR)
+left_text = Vips.Image.text("left corner", dpi = 300)
+right_text = Vips.Image.text("right corner", dpi = 300)
+
+left = left_text.embed(50, 50, im.width, 150)
 right = right_text.embed(im.width - right_text.width - 50, 50, im.width, 150)
+footer = (left | right).ifthenelse(black, red, blend = True)
 
-footer = (left | right).blend(black, red)
-
-im = im.insert(footer, 0, im.height - footer.height)
+im = im.insert(footer, 0, im.height, expand = True)
 
 im.write_to_file(sys.argv[2])