def __init__(self, is_sass=False):
self.css = Scss()
self.namespace = self.css.root_namespace
self.options = self.css.scss_opts
self.source_file = SourceFile.from_string('',
'<shell>',
line_numbers=False,
is_sass=is_sass)
self.calculator = Calculator(self.namespace)
def test_functions(calc):
ns = Namespace(functions=CORE_LIBRARY)
calc = Calculator(ns).calculate
assert calc('grayscale(red)') == Color.from_rgb(0.5, 0.5, 0.5)
assert calc('grayscale(1)') == String(
'grayscale(1)',
quotes=None) # Misusing css built-in functions (with scss counterpart)
assert calc('skew(1)') == String(
'skew(1)', quotes=None) # Missing css-only built-in functions
with pytest.raises(SassEvaluationError):
calc('unitless("X")') # Misusing non-css built-in scss funtions
def test_reference_operations():
"""Test the example expressions in the reference document:
http://sass-lang.com/docs/yardoc/file.SASS_REFERENCE.html#operations
"""
# TODO: break this into its own file and add the entire reference guide
# Need to build the calculator manually to get at its namespace, and need
# to use calculate() instead of evaluate_expression() so interpolation
# works
ns = Namespace(functions=CORE_LIBRARY)
calc = Calculator(ns).calculate
# Simple example
assert calc('1in + 8pt') == Number(1.11111111, "in")
# Division
ns.set_variable('$width', Number(1000, "px"))
ns.set_variable('$font-size', Number(12, "px"))
ns.set_variable('$line-height', Number(30, "px"))
assert calc('10px/8px') == String('10px / 8px') # plain CSS; no division
assert calc('$width/2') == Number(500, "px") # uses a variable; does division
assert calc('(500px/2)') == Number(250, "px") # uses parens; does division
assert calc('5px + 8px/2px') == Number(9, "px") # uses +; does division
# TODO: Ruby doesn't include these spaces
assert calc('#{$font-size}/#{$line-height}') == String('12px / 30px')
# uses #{}; does no division
# Color operations
ns.set_variable('$translucent-red', Color.from_rgb(1, 0, 0, 0.5))
ns.set_variable('$green', Color.from_name('lime'))
assert calc('#010203 + #040506') == Color.from_hex('#050709')
assert calc('#010203 * 2') == Color.from_hex('#020406')
assert calc('rgba(255, 0, 0, 0.75) + rgba(0, 255, 0, 0.75)') == Color.from_rgb(1, 1, 0, 0.75)
assert calc('opacify($translucent-red, 0.3)') == Color.from_rgb(1, 0, 0, 0.9)
assert calc('transparentize($translucent-red, 0.25)') == Color.from_rgb(1, 0, 0, 0.25)
assert calc("progid:DXImageTransform.Microsoft.gradient(enabled='false', startColorstr='#{ie-hex-str($green)}', endColorstr='#{ie-hex-str($translucent-red)}')"
) == "progid:DXImageTransform.Microsoft.gradient(enabled='false', startColorstr=#FF00FF00, endColorstr=#80FF0000)"
# String operations
ns.set_variable('$value', Null())
assert calc('e + -resize') == 'e-resize'
assert calc('"Foo " + Bar') == '"Foo Bar"'
assert calc('sans- + "serif"') == 'sans-serif'
assert calc('3px + 4px auto') == '7px auto'
assert calc('"I ate #{5 + 10} pies!"') == '"I ate 15 pies!"'
assert calc('"I ate #{$value} pies!"') == '"I ate pies!"'
def calc():
ns = Namespace(functions=COMPASS_HELPERS_LIBRARY)
return Calculator(ns).evaluate_expression
def calc():
return Calculator().evaluate_expression
