Improved coverage

Author: radarhere

Tests/test_fontfile.py

@@ -1,12 +1,22 @@
 from __future__ import annotations
 
+from io import BytesIO
 from pathlib import Path
 
 import pytest
 
 from PIL import FontFile, Image
 
 
+def test_puti16() -> None:
+    fp = BytesIO()
+    FontFile.puti16(fp, (0, 1, 2, 3, 4, 5, 6, 7, 8, 9))
+    assert fp.getvalue() == (
+        b"\x00\x00\x00\x01\x00\x02\x00\x03\x00\x04"
+        b"\x00\x05\x00\x06\x00\x07\x00\x08\x00\t"
+    )
+
+
 def test_compile() -> None:
     font = FontFile.FontFile()
     font.glyph[0] = ((0, 0), (0, 0, 0, 0), (0, 0, 0, 1), Image.new("L", (0, 0)))
@@ -24,5 +34,11 @@ def test_save(tmp_path: Path) -> None:
     tempname = str(tmp_path / "temp.pil")
 
     font = FontFile.FontFile()
-    with pytest.raises(ValueError):
+    with pytest.raises(ValueError, match="No bitmap created"):
         font.save(tempname)
+
+
+def test_to_imagefont() -> None:
+    font = FontFile.FontFile()
+    with pytest.raises(ValueError, match="No bitmap created"):
+        font.to_imagefont()