def test_all_operators_and_levels_match_non_contained(self):
expression = Expression("x + Derivative(x + x**2, x)", is_latex=False)
sub_expression = Expression("Derivative(x**2)", is_latex=False)
self.assertFalse(expression.operators_and_levels_match(sub_expression))
def there_is_a_chance_to_apply_to(self, expression: Expression):
return expression.operators_and_levels_match(self.left)
def test_all_operators_and_levels_match_long_expression(self):
expression = Expression(
"Derivative(x + x**2, x) + Derivative(x + x**2, x) + Derivative(x + x**2, x)",
is_latex=False)
sub_expression = Expression("Derivative(x + x**2, x)", is_latex=False)
self.assertTrue(expression.operators_and_levels_match(sub_expression))
