add arg parser to font_test for testing bitmapped fonts

font_test.py

@@ -97,15 +97,17 @@ def display(data, hmap, height, width, reverse):
 # Basic test of Font class functionality
 # Usage font_test.font_test()
 def font_test():
-    fnt = Font('FreeSans.ttf', 20)
+    charset = 'WM_eg!.,'
-    for char in 'WM_eg!.,':
+    fnt = Font('FreeSans.ttf', 20, charset, False)
+    for char in charset:
         fnt[char][0].display()
     print(fnt.width)
 
+
 # Font character streaming
 # Usage font_test.test_stream('abc', 20, False, False, False)
 def test_stream(string, height, monospaced, hmap, reverse):
-    fnt = Font("FreeSans.ttf", height, monospaced)
+    fnt = Font("FreeSans.ttf", height, string, monospaced)
     height = fnt.height
     for char in string:
         width = fnt[char][1]
@@ -121,7 +123,7 @@ def chr_addr(index, ordch):
 # Font.build_arrays
 # Usage font_test.test_arrays('abc', 20, False, False, False)
 def test_arrays(string, height, monospaced, hmap, reverse):
-    fnt = Font("FreeSans.ttf", height, monospaced)
+    fnt = Font("FreeSans.ttf", height, string, monospaced)
     height = fnt.height
     data, index = fnt.build_arrays(hmap, reverse)
     for char in string:
@@ -140,23 +142,18 @@ def test_font(fontfile, string):
         del sys.modules[fontfile]  # force reload
     myfont = import_module(fontfile)
 
-    height = myfont.height()
+    _display_bitmapped_string(myfont, string)
-    for row in range(height):
-        for char in string:
-            data, _, width = myfont.get_char(char)
-            if myfont.hmap():
-                render_row_hmap(data, row, height, width, myfont.reverse())
-            else:
-                render_row_vmap(data, row, height, width, myfont.reverse())
-        print()
 
 
 # Create font file, render a string to REPL using it
 # usage font_test.test_file('FreeSans.ttf', 20, 'xyz')
 def test_file(fontfile, height, string, *, minchar=32, maxchar=126, defchar=ord('?'),
-              fixed=False, hmap=False, reverse=False):
+              fixed=False, hmap=False, lmap=False, reverse=False):
+    charset = [chr(x) for x in range(minchar, maxchar+1)]
+    if chr(defchar) not in charset:
+        charset += chr(defchar)
     if not write_font('myfont.py', fontfile, height, fixed,
-                      hmap, reverse, minchar, maxchar, defchar):
+                      hmap, lmap, reverse, charset):
         print('Failed to create font file.')
         return
 
@@ -164,6 +161,11 @@ def test_file(fontfile, height, string, *, minchar=32, maxchar=126, defchar=ord(
         del sys.modules['myfont']  # force reload
     import myfont
 
+    _display_bitmapped_string(myfont, string)
+    os.unlink('myfont.py')
+
+
+def _display_bitmapped_string(myfont, string):
     height = myfont.height()
     for row in range(height):
         for char in string:
@@ -173,4 +175,27 @@ def test_file(fontfile, height, string, *, minchar=32, maxchar=126, defchar=ord(
             else:
                 render_row_vmap(data, row, height, width, myfont.reverse())
         print()
-    os.unlink('myfont.py')
+
+
+if __name__ == '__main__':
+    import argparse
+    parser = argparse.ArgumentParser(description='Test font_to_py')
+    parser.add_argument('-f', '--font', dest='font',
+                        help='Name of a Python font module generated by font_to_py')
+    parser.add_argument('-F', '--fontfile', dest='fontfile',
+                        help='Path to a TTF font file to test')
+    parser.add_argument('-s', '--size', dest='size', default=20)
+    parser.add_argument('test_string', nargs='?', default='ABCD.efghij 123!')
+    args = parser.parse_args()
+
+    if args.fontfile:
+        if not os.path.exists(args.fontfile):
+            exit('Sorry, could not find a font file at {}.'.format(args.fontfile))
+        print('Running test_file with source font {}:'.format(args.fontfile))
+        test_file(args.fontfile, int(args.size), args.test_string)
+
+    elif args.font:
+        if '.py' in args.font:
+            args.font = args.font[:-3]
+        print('Running test_font with py font module {}:'.format(args.font))
+        test_font(args.font, args.test_string)