def test_load_from_pillow_exceptions():
"""
Test that exceptions are thrown as appropriate if bitmap_font is asked to
load a pillow font that is not a PIL.ImageFont file, is damaged or does not
include the required font metrics data.
"""
with pytest.raises(SyntaxError) as ex:
filename = get_reference_file(Path('font').joinpath('hd44780a02.pbm'))
bitmap_font.load_pillow_font(filename, FONTDATA['mappings'][1])
assert str(ex.value) == "Not a PIL.ImageFont file"
with pytest.raises(SyntaxError) as ex:
filename = get_reference_file(Path('font').joinpath('hd44780a02_nodata.pil'))
bitmap_font.load_pillow_font(filename, FONTDATA['mappings'][1])
assert str(ex.value) == "PIL.ImageFont file missing metric data"
with pytest.raises(SyntaxError) as ex:
filename = get_reference_file(Path('font').joinpath('hd44780a02_incomplete.pil'))
bitmap_font.load_pillow_font(filename, FONTDATA['mappings'][1])
assert str(ex.value) == "PIL.ImageFont file metric data incomplete"
filename = get_reference_file(Path('font').joinpath('wrong_mode.pil'))
with pytest.raises(OSError) as ex:
bitmap_font.load_pillow_font(filename)
assert str(ex.value) == 'cannot find glyph data file'
def test_load_from_pillow_font():
"""
Test the loading of a pillow font from disk by loading the font from bitmap_font
and PIL.ImageFont, rendering a page of glyphs which each and testing to make
sure the results are the same.
"""
fnt = get_reference_pillow_font('hd44780a02.pil')
filename = get_reference_file(Path('font').joinpath('hd44780a02.pil'))
bmf = bitmap_font.load_pillow_font(filename)
img1 = make_sprite_table(fnt)
img2 = make_sprite_table(bmf)
assert img1 == img2
def test_mapping():
"""
Test to make sure that values that have unicode mappings work correctly
"""
fnt = get_reference_pillow_font('hd44780a02.pil')
filename = get_reference_file(Path('font').joinpath('hd44780a02.pil'))
bmf = bitmap_font.load_pillow_font(filename, FONTDATA['mappings'][1])
size = bmf.getsize('\u0010')
img1 = Image.new('1', size, 0)
img2 = Image.new('1', (5, 8), 0)
drw = ImageDraw.Draw(img1)
drw.text((0, 0), '\u0010', font=fnt, fill='white')
drw = ImageDraw.Draw(img2)
drw.text((0, 0), '\u25b6', font=bmf, fill='white')
assert img1 == img2