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#!/usr/bin/env python3
# *****************************************************************************
# Copyright (C) 2019-2021 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
# This file is part of the thcolor project, which is MIT-licensed.
# *****************************************************************************
""" Unit tests for the thcolor color decoding and management module. """
from typing import Any
import pytest
from thcolor.angles import * # NOQA
from thcolor.colors import * # NOQA
from thcolor.decoders import * # NOQA
from thcolor.errors import * # NOQA
class TestInvalidDecoders:
""" Test the exceptions raised when an invalid decoder is created. """
def test_unknown_data_type(self):
with pytest.raises(TypeError, match=r'neither an alias'):
class BogusDecoder(MetaColorDecoder):
hello = 'hello'
def test_circular_aliases(self):
with pytest.raises(ValueError, match=r'cyclic dependency'):
class BogusDecoder(MetaColorDecoder):
a = alias('b')
b = alias('a')
def test_alias_unknown_argument(self):
with pytest.raises(ValueError, match=r'not an argument'):
class BogusDecoder(MetaColorDecoder):
def f(a: int) -> int:
return a
g = alias('f', args=('b',))
def test_alias_non_default_argument(self):
with pytest.raises(ValueError, match=r'left without value'):
class BogusDecoder(MetaColorDecoder):
def f(a: int, b: int = 0) -> int:
return a + b
g = alias('f', args=('b',))
def test_varargs(self):
with pytest.raises(ValueError, match=r'variable arg'):
class BogusDecoder(MetaColorDecoder):
def f(a: int, b: int = 0, *args) -> int:
return a + b + sum(args)
class TestBaseDecoder:
""" Test the base decoder with no options enabled. """
@pytest.fixture
def decoder(self):
class StrictDecoder(MetaColorDecoder):
B20 = 12.34
heLLo = 56.78
return StrictDecoder()
@pytest.mark.parametrize('test_input,expected', (
('1 / 2 , 3', (
1, 2, 3.0,
)),
('20deg 4turn 3,, 3. 3.0 .2 50%', (
DegreesAngle(20), TurnsAngle(4), 3, None, 3.0, 3.0, 0.2, 0.5,
)),
('#12345F', (
SRGBColor.frombytes(18, 52, 95, 1.00),
)),
))
def test_syntax(self, decoder, test_input, expected):
""" Test basic syntax.
Tests syntaxes that are always available, with separators.
"""
result = decoder.decode(test_input)
assert result == expected
@pytest.mark.parametrize('test_input,expected', (
('20.5, 20 / 19.5deg', (
DegreesAngle(20.5), DegreesAngle(20), DegreesAngle(19.5),
)),
))
def test_coersce_into_angles(self, decoder, test_input, expected):
""" Test the decoding while indicating that we want angles. """
result = decoder.decode(test_input, prefer_angles=True)
assert result == expected
def test_existing_variable(self, decoder):
""" Test getting an existing variable. """
result = decoder.decode('hello')
assert result == (56.78,)
def test_non_existing_variable(self, decoder):
""" Test getting a non-existing variable. """
with pytest.raises(ColorExpressionSyntaxError, match=r'unknown value'):
decoder.decode('nonexisting')
def test_existing_variable_ncol_format(self, decoder):
""" Test decoding an expression using an NCol-like variable.
We want to avoid the NCol subsytem from shadowing
existing variables when NCol support is disabled.
"""
result = decoder.decode('B20')
assert result == (12.34,)
def test_non_existing_variable_ncol_format(self, decoder):
""" Test decoding an expression using an NCol-like variable.
We want to avoid the NCol subsystem intercepting errors
in case of non-existing variables.
"""
with pytest.raises(ColorExpressionSyntaxError, match=r'unknown value'):
decoder.decode('Y40')
def test_disabled_extended_hex(self, decoder):
""" Test decoding an expression using an extended hex color.
This should be disabled in this state.
"""
with pytest.raises(ColorExpressionSyntaxError, match=r'extended hex'):
decoder.decode('#1234')
class TestExtendedHexDecoder:
""" Test base decoder with extended hex support. """
@pytest.fixture
def decoder(self):
class Decoder(MetaColorDecoder):
__extended_hex_support__ = True
return Decoder()
@pytest.mark.parametrize('test_input,expected', (
('#0003', SRGBColor(0, 0, 0, alpha=.2)),
('#000A', SRGBColor(0, 0, 0, alpha=.666667)),
))
def test_extended_hex(self, decoder, test_input, expected):
assert decoder.decode(test_input) == (expected,)
class TestNColDecoder:
""" Test base decoder with ncol support. """
@pytest.fixture
def decoder(self):
class Decoder(MetaColorDecoder):
__ncol_support__ = True
def sum2(a: int, b: int) -> int:
return a + b
def sum5(a: int, b: int, c: int, d: int, e: int) -> int:
return a + b + c + d + e
def col(a) -> Any:
return a
return Decoder()
@pytest.mark.parametrize('test_input,expected', (
(
'B20 / 50% 32%',
HWBColor(DegreesAngle(252), .5, .32, 1.00),
),
(
'B20 / / 16%',
HWBColor(DegreesAngle(252), 0, .16, 1.00),
),
(
'Y40, 33%, 55%',
HWBColor(DegreesAngle(84), 0.33, 0.55, 1.00),
),
(
'Y40, sum2(35, -2), 55%',
HWBColor(DegreesAngle(84), 0.33, 0.55, 1.00),
),
(
'Y40, sum5(1, 1, 1, 1, 29), 55%',
HWBColor(DegreesAngle(84), 0.33, 0.55, 1.00),
),
(
'Y40',
HWBColor(DegreesAngle(84), 0, 0),
),
(
'col(Y40)',
HWBColor(DegreesAngle(84), 0, 0),
),
))
def test_ncol(self, decoder, test_input, expected):
""" Test natural colors. """
result = decoder.decode(test_input)
assert result == (expected,)
def test_invalid_ncol(self, decoder):
with pytest.raises(ColorExpressionSyntaxError, match=r'unknown value'):
assert decoder.decode('Y105, 50%, 50%')
class TestNetscapeDecoder:
""" Test base decoder with netscape color support. """
@pytest.fixture
def decoder(self):
class Decoder(MetaColorDecoder):
__ncol_support__ = False
__defaults_to_netscape_color__ = True
return Decoder()
@pytest.mark.parametrize('test_input,expected', (
('chucknorris', SRGBColor.frombytes(192, 0, 0, 1.00)),
(
'6db6ec49efd278cd0bc92d1e5e072d680',
SRGBColor.frombytes(110, 205, 224),
),
))
def test_netscape_colors(self, decoder, test_input, expected):
""" Test decoding using Netscape colors. """
result = decoder.decode(test_input, prefer_colors=True)
assert result == (expected,)
@pytest.mark.parametrize('test_input,expected', (
('#123', SRGBColor.frombytes(17, 34, 51, 1.00)),
('123', SRGBColor.frombytes(1, 2, 3, 1.00)),
('123.0', SRGBColor.frombytes(18, 48, 0, 1.00)),
))
def test_coersce_into_colors(self, decoder, test_input, expected):
""" Test the decoding while indicating that we want colors.
It is expected from the decoder to use Netscape color name
style decoding in this scenario.
"""
result = decoder.decode(test_input, prefer_colors=True)
assert result == (expected,)
# End of file.
|
