def test_from_expression():
expression = Expression()
expression.append(Unit(10, "mm"))
expression.append(true)
expression.lineno = 42
expression.column = 13
expression.is_list = True
arguments = Arguments.from_expression(expression)
assert arguments.nodes == expression.nodes
assert arguments.lineno == expression.lineno
assert arguments.column == expression.column
assert arguments.is_list == expression.is_list
def test_expression_string_first_boolean():
from stilus.nodes.boolean import true
from stilus.nodes.boolean import false
from stilus.nodes.null import null
expression = Expression()
expression.append(true)
expression.append(false)
expression.append(null)
assert str(expression) == "(true false null)"
expression.is_list = True
assert str(expression) == "(true, false, null)"
assert expression.first() is true
assert expression.to_boolean().value is True
def test_property_expression():
from stilus.nodes.boolean import true
from stilus.nodes.boolean import false
from stilus.nodes.null import null
expression = Expression()
expression.append(true)
expression.append(false)
expression.append(null)
property = Property(["foo", "bar"], expression)
assert property.node_name == "property"
assert len(property.segments) == 2
assert property.expr is expression
assert f"{property}" == "property(foobar, (true false null))"
expression.is_list = True
assert f"{property}" == "property(foobar, (true, false, null))"
def test_expression_make_is_list_and_preserve():
expression = Expression()
expression.is_list = True
expression.preserve = True
assert expression.is_list
assert expression.preserve