def test_roundtrip(pair):
rgb, lch = pair
argb = convert(*convert(*rgb,
src=cs.rgb,
dst=cs.lch), src=cs.lch, dst=cs.rgb)
for v in argb:
assert v > -0.0001
assert v < 1.0001
assert _near(argb, rgb, 0.1)
def test_roundtrip(pair):
rgb, lch = pair
argb = convert(*convert(*rgb, src=cs.rgb, dst=cs.lch),
src=cs.lch,
dst=cs.rgb)
for v in argb:
assert v > -0.0001
assert v < 1.0001
assert _near(argb, rgb, 0.1)
def assert_color_roundtrip(color, src, dst, tolerance):
"""Asserts roundtrip of color correction within a given tolerance
Helper function for tests below.
"""
other = convert(*color, src=src, dst=dst)
rio_roundtrip = convert(*other, src=dst, dst=src)
if _near(rio_roundtrip, color, tol=tolerance):
return True
else:
# Did not roundtrip properly, can colormath do it?
src_cm = to_colormath[src]
dst_cm = to_colormath[dst]
cm_roundtrip = convert_color(
convert_color(src_cm(*color), dst_cm, illuminant="d65"),
src_cm, illuminant="d65").get_value_tuple()
assert _near(rio_roundtrip, cm_roundtrip, tol=tolerance)
def assert_color_roundtrip(color, src, dst, tolerance):
"""Asserts roundtrip of color correction within a given tolerance
Helper function for tests below.
"""
other = convert(*color, src=src, dst=dst)
rio_roundtrip = convert(*other, src=dst, dst=src)
if _near(rio_roundtrip, color, tol=tolerance):
return True
else:
# Did not roundtrip properly, can colormath do it?
src_cm = to_colormath[src]
dst_cm = to_colormath[dst]
cm_roundtrip = convert_color(
convert_color(src_cm(*color), dst_cm, illuminant="d65"),
src_cm,
illuminant="d65",
).get_value_tuple()
assert _near(rio_roundtrip, cm_roundtrip, tol=tolerance)
def test_lch2rgb(pair):
rgb, lch = pair
argb = convert(*lch, src=cs.lch, dst=cs.rgb)
assert _near(argb, rgb, (1.0, 1.0, 0.1))
def test_rgb2lch(pair):
rgb, lch = pair
alch = convert(*rgb, src=cs.rgb, dst=cs.lch)
assert alch[0] >= 0
assert _near(alch, lch, (1.0, 1.0, 0.25))
def test_bad_colorspace_invalid_enum():
"""Invalid colorspace enum names raise AttributeError"""
with pytest.raises(AttributeError):
convert(0.1, 0.1, 0.1, src=cs.foo, dst=cs.bar)
def test_bad_colorspace_invalid_int():
"""Invalid colorspace integers raise ValueError"""
with pytest.raises(ValueError):
convert(0.1, 0.1, 0.1, src=999, dst=999)
def test_bad_colorspace_string():
"""String colorspaces raise ValueError"""
with pytest.raises(ValueError):
convert(0.1, 0.1, 0.1, src="FOO", dst="RGB")
def test_lch2rgb(pair):
rgb, lch = pair
argb = convert(*lch, src=cs.lch, dst=cs.rgb)
assert _near(argb, rgb, (1.0, 1.0, 0.1))
def test_rgb2lch(pair):
rgb, lch = pair
alch = convert(*rgb, src=cs.rgb, dst=cs.lch)
assert alch[0] >= 0
assert _near(alch, lch, (1.0, 1.0, 0.25))
def test_bad_colorspace_invalid_enum():
"""Invalid colorspace enum names raise AttributeError"""
with pytest.raises(AttributeError):
convert(0.1, 0.1, 0.1, src=cs.foo, dst=cs.bar)
def test_bad_colorspace_invalid_int():
"""Invalid colorspace integers raise ValueError"""
with pytest.raises(ValueError):
convert(0.1, 0.1, 0.1, src=999, dst=999)
def test_bad_colorspace_string():
"""String colorspaces raise ValueError"""
with pytest.raises(ValueError):
convert(0.1, 0.1, 0.1, src='FOO', dst='RGB')