def test_string_vs_ast():
expression = "2 * (3 + 4)"
parsed = parser.parse(expression)
assert evaljs(expression) == evaljs(parsed)
def test_expressions(expression, names):
assert eval(expression, names) == evaljs(expression, names)
def test_jsonly_expressions(expression, output, names):
assert evaljs(expression, names) == output
def eval_vegajs(expression: str, datum: ibis.Expr = None) -> ibis.Expr:
"""Evaluate a vega expression"""
namespace = {"datum": datum} if datum is not None else {}
namespace.update(VEGAJS_NAMESPACE)
return evaljs(expression, namespace)