Merge pull request #8783 from radarhere/bdf

Improved BdfFontFile test coverage

Author: radarhere

Tests/test_font_bdf.py

@@ -1,5 +1,7 @@
 from __future__ import annotations
 
+import io
+
 import pytest
 
 from PIL import BdfFontFile, FontFile
@@ -8,13 +10,20 @@
 
 
 def test_sanity() -> None:
-    with open(filename, "rb") as test_file:
-        font = BdfFontFile.BdfFontFile(test_file)
+    with open(filename, "rb") as fp:
+        font = BdfFontFile.BdfFontFile(fp)
 
     assert isinstance(font, FontFile.FontFile)
     assert len([_f for _f in font.glyph if _f]) == 190
 
 
+def test_zero_width_chars() -> None:
+    with open(filename, "rb") as fp:
+        data = fp.read()
+        data = data[:2650] + b"\x00\x00" + data[2652:]
+        BdfFontFile.BdfFontFile(io.BytesIO(data))
+
+
 def test_invalid_file() -> None:
     with open("Tests/images/flower.jpg", "rb") as fp:
         with pytest.raises(SyntaxError):