Pillow/Tests/test_imagecolor.py
2020-01-27 22:46:52 +11:00

193 lines
7.5 KiB
Python

import pytest
from PIL import Image, ImageColor
def test_hash():
# short 3 components
assert (255, 0, 0) == ImageColor.getrgb("#f00")
assert (0, 255, 0) == ImageColor.getrgb("#0f0")
assert (0, 0, 255) == ImageColor.getrgb("#00f")
# short 4 components
assert (255, 0, 0, 0) == ImageColor.getrgb("#f000")
assert (0, 255, 0, 0) == ImageColor.getrgb("#0f00")
assert (0, 0, 255, 0) == ImageColor.getrgb("#00f0")
assert (0, 0, 0, 255) == ImageColor.getrgb("#000f")
# long 3 components
assert (222, 0, 0) == ImageColor.getrgb("#de0000")
assert (0, 222, 0) == ImageColor.getrgb("#00de00")
assert (0, 0, 222) == ImageColor.getrgb("#0000de")
# long 4 components
assert (222, 0, 0, 0) == ImageColor.getrgb("#de000000")
assert (0, 222, 0, 0) == ImageColor.getrgb("#00de0000")
assert (0, 0, 222, 0) == ImageColor.getrgb("#0000de00")
assert (0, 0, 0, 222) == ImageColor.getrgb("#000000de")
# case insensitivity
assert ImageColor.getrgb("#DEF") == ImageColor.getrgb("#def")
assert ImageColor.getrgb("#CDEF") == ImageColor.getrgb("#cdef")
assert ImageColor.getrgb("#DEFDEF") == ImageColor.getrgb("#defdef")
assert ImageColor.getrgb("#CDEFCDEF") == ImageColor.getrgb("#cdefcdef")
# not a number
with pytest.raises(ValueError):
ImageColor.getrgb("#fo0")
with pytest.raises(ValueError):
ImageColor.getrgb("#fo00")
with pytest.raises(ValueError):
ImageColor.getrgb("#fo0000")
with pytest.raises(ValueError):
ImageColor.getrgb("#fo000000")
# wrong number of components
with pytest.raises(ValueError):
ImageColor.getrgb("#f0000")
with pytest.raises(ValueError):
ImageColor.getrgb("#f000000")
with pytest.raises(ValueError):
ImageColor.getrgb("#f00000000")
with pytest.raises(ValueError):
ImageColor.getrgb("#f000000000")
with pytest.raises(ValueError):
ImageColor.getrgb("#f00000 ")
def test_colormap():
assert (0, 0, 0) == ImageColor.getrgb("black")
assert (255, 255, 255) == ImageColor.getrgb("white")
assert (255, 255, 255) == ImageColor.getrgb("WHITE")
with pytest.raises(ValueError):
ImageColor.getrgb("black ")
def test_functions():
# rgb numbers
assert (255, 0, 0) == ImageColor.getrgb("rgb(255,0,0)")
assert (0, 255, 0) == ImageColor.getrgb("rgb(0,255,0)")
assert (0, 0, 255) == ImageColor.getrgb("rgb(0,0,255)")
# percents
assert (255, 0, 0) == ImageColor.getrgb("rgb(100%,0%,0%)")
assert (0, 255, 0) == ImageColor.getrgb("rgb(0%,100%,0%)")
assert (0, 0, 255) == ImageColor.getrgb("rgb(0%,0%,100%)")
# rgba numbers
assert (255, 0, 0, 0) == ImageColor.getrgb("rgba(255,0,0,0)")
assert (0, 255, 0, 0) == ImageColor.getrgb("rgba(0,255,0,0)")
assert (0, 0, 255, 0) == ImageColor.getrgb("rgba(0,0,255,0)")
assert (0, 0, 0, 255) == ImageColor.getrgb("rgba(0,0,0,255)")
assert (255, 0, 0) == ImageColor.getrgb("hsl(0,100%,50%)")
assert (255, 0, 0) == ImageColor.getrgb("hsl(360,100%,50%)")
assert (0, 255, 255) == ImageColor.getrgb("hsl(180,100%,50%)")
assert (255, 0, 0) == ImageColor.getrgb("hsv(0,100%,100%)")
assert (255, 0, 0) == ImageColor.getrgb("hsv(360,100%,100%)")
assert (0, 255, 255) == ImageColor.getrgb("hsv(180,100%,100%)")
# alternate format
assert ImageColor.getrgb("hsb(0,100%,50%)") == ImageColor.getrgb("hsv(0,100%,50%)")
# floats
assert (254, 3, 3) == ImageColor.getrgb("hsl(0.1,99.2%,50.3%)")
assert (255, 0, 0) == ImageColor.getrgb("hsl(360.,100.0%,50%)")
assert (253, 2, 2) == ImageColor.getrgb("hsv(0.1,99.2%,99.3%)")
assert (255, 0, 0) == ImageColor.getrgb("hsv(360.,100.0%,100%)")
# case insensitivity
assert ImageColor.getrgb("RGB(255,0,0)") == ImageColor.getrgb("rgb(255,0,0)")
assert ImageColor.getrgb("RGB(100%,0%,0%)") == ImageColor.getrgb("rgb(100%,0%,0%)")
assert ImageColor.getrgb("RGBA(255,0,0,0)") == ImageColor.getrgb("rgba(255,0,0,0)")
assert ImageColor.getrgb("HSL(0,100%,50%)") == ImageColor.getrgb("hsl(0,100%,50%)")
assert ImageColor.getrgb("HSV(0,100%,50%)") == ImageColor.getrgb("hsv(0,100%,50%)")
assert ImageColor.getrgb("HSB(0,100%,50%)") == ImageColor.getrgb("hsb(0,100%,50%)")
# space agnosticism
assert (255, 0, 0) == ImageColor.getrgb("rgb( 255 , 0 , 0 )")
assert (255, 0, 0) == ImageColor.getrgb("rgb( 100% , 0% , 0% )")
assert (255, 0, 0, 0) == ImageColor.getrgb("rgba( 255 , 0 , 0 , 0 )")
assert (255, 0, 0) == ImageColor.getrgb("hsl( 0 , 100% , 50% )")
assert (255, 0, 0) == ImageColor.getrgb("hsv( 0 , 100% , 100% )")
# wrong number of components
with pytest.raises(ValueError):
ImageColor.getrgb("rgb(255,0)")
with pytest.raises(ValueError):
ImageColor.getrgb("rgb(255,0,0,0)")
with pytest.raises(ValueError):
ImageColor.getrgb("rgb(100%,0%)")
with pytest.raises(ValueError):
ImageColor.getrgb("rgb(100%,0%,0)")
with pytest.raises(ValueError):
ImageColor.getrgb("rgb(100%,0%,0 %)")
with pytest.raises(ValueError):
ImageColor.getrgb("rgb(100%,0%,0%,0%)")
with pytest.raises(ValueError):
ImageColor.getrgb("rgba(255,0,0)")
with pytest.raises(ValueError):
ImageColor.getrgb("rgba(255,0,0,0,0)")
with pytest.raises(ValueError):
ImageColor.getrgb("hsl(0,100%)")
with pytest.raises(ValueError):
ImageColor.getrgb("hsl(0,100%,0%,0%)")
with pytest.raises(ValueError):
ImageColor.getrgb("hsl(0%,100%,50%)")
with pytest.raises(ValueError):
ImageColor.getrgb("hsl(0,100,50%)")
with pytest.raises(ValueError):
ImageColor.getrgb("hsl(0,100%,50)")
with pytest.raises(ValueError):
ImageColor.getrgb("hsv(0,100%)")
with pytest.raises(ValueError):
ImageColor.getrgb("hsv(0,100%,0%,0%)")
with pytest.raises(ValueError):
ImageColor.getrgb("hsv(0%,100%,50%)")
with pytest.raises(ValueError):
ImageColor.getrgb("hsv(0,100,50%)")
with pytest.raises(ValueError):
ImageColor.getrgb("hsv(0,100%,50)")
# look for rounding errors (based on code by Tim Hatch)
def test_rounding_errors():
for color in ImageColor.colormap:
expected = Image.new("RGB", (1, 1), color).convert("L").getpixel((0, 0))
actual = ImageColor.getcolor(color, "L")
assert expected == actual
assert (0, 255, 115) == ImageColor.getcolor("rgba(0, 255, 115, 33)", "RGB")
Image.new("RGB", (1, 1), "white")
assert (0, 0, 0, 255) == ImageColor.getcolor("black", "RGBA")
assert (255, 255, 255, 255) == ImageColor.getcolor("white", "RGBA")
assert (0, 255, 115, 33) == ImageColor.getcolor("rgba(0, 255, 115, 33)", "RGBA")
Image.new("RGBA", (1, 1), "white")
assert 0 == ImageColor.getcolor("black", "L")
assert 255 == ImageColor.getcolor("white", "L")
assert 163 == ImageColor.getcolor("rgba(0, 255, 115, 33)", "L")
Image.new("L", (1, 1), "white")
assert 0 == ImageColor.getcolor("black", "1")
assert 255 == ImageColor.getcolor("white", "1")
# The following test is wrong, but is current behavior
# The correct result should be 255 due to the mode 1
assert 163 == ImageColor.getcolor("rgba(0, 255, 115, 33)", "1")
# Correct behavior
# assert
# 255, ImageColor.getcolor("rgba(0, 255, 115, 33)", "1"))
Image.new("1", (1, 1), "white")
assert (0, 255) == ImageColor.getcolor("black", "LA")
assert (255, 255) == ImageColor.getcolor("white", "LA")
assert (163, 33) == ImageColor.getcolor("rgba(0, 255, 115, 33)", "LA")
Image.new("LA", (1, 1), "white")