from __future__ import annotations import os import pytest from PIL import FontFile, Image, ImageDraw, ImageFont, PcfFontFile from .helper import ( assert_image_equal_tofile, assert_image_similar_tofile, skip_unless_feature, ) fontname = "Tests/fonts/10x20-ISO8859-1.pcf" message = "hello, world" pytestmark = skip_unless_feature("zlib") def save_font(request, tmp_path): with open(fontname, "rb") as test_file: font = PcfFontFile.PcfFontFile(test_file) assert isinstance(font, FontFile.FontFile) # check the number of characters in the font assert len([_f for _f in font.glyph if _f]) == 223 tempname = str(tmp_path / "temp.pil") def delete_tempfile(): try: os.remove(tempname[:-4] + ".pbm") except OSError: pass # report? request.addfinalizer(delete_tempfile) font.save(tempname) with Image.open(tempname.replace(".pil", ".pbm")) as loaded: assert_image_equal_tofile(loaded, "Tests/fonts/10x20.pbm") with open(tempname, "rb") as f_loaded: with open("Tests/fonts/10x20.pil", "rb") as f_target: assert f_loaded.read() == f_target.read() return tempname def test_sanity(request, tmp_path): save_font(request, tmp_path) def test_less_than_256_characters(): with open("Tests/fonts/10x20-ISO8859-1-fewer-characters.pcf", "rb") as test_file: font = PcfFontFile.PcfFontFile(test_file) assert isinstance(font, FontFile.FontFile) # check the number of characters in the font assert len([_f for _f in font.glyph if _f]) == 127 def test_invalid_file(): with open("Tests/images/flower.jpg", "rb") as fp: with pytest.raises(SyntaxError): PcfFontFile.PcfFontFile(fp) def test_draw(request, tmp_path): tempname = save_font(request, tmp_path) font = ImageFont.load(tempname) im = Image.new("L", (130, 30), "white") draw = ImageDraw.Draw(im) draw.text((0, 0), message, "black", font=font) assert_image_similar_tofile(im, "Tests/images/test_draw_pbm_target.png", 0) def test_textsize(request, tmp_path): tempname = save_font(request, tmp_path) font = ImageFont.load(tempname) for i in range(255): (ox, oy, dx, dy) = font.getbbox(chr(i)) assert ox == 0 assert oy == 0 assert dy == 20 assert dx in (0, 10) assert font.getlength(chr(i)) == dx for i in range(len(message)): msg = message[: i + 1] assert font.getlength(msg) == len(msg) * 10 assert font.getbbox(msg) == (0, 0, len(msg) * 10, 20) def _test_high_characters(request, tmp_path, message): tempname = save_font(request, tmp_path) font = ImageFont.load(tempname) im = Image.new("L", (750, 30), "white") draw = ImageDraw.Draw(im) draw.text((0, 0), message, "black", font=font) assert_image_similar_tofile(im, "Tests/images/high_ascii_chars.png", 0) def test_high_characters(request, tmp_path): message = "".join(chr(i + 1) for i in range(140, 232)) _test_high_characters(request, tmp_path, message) # accept bytes instances. _test_high_characters(request, tmp_path, message.encode("latin1"))