Assert that none of x are in y

None of x are in y

assert_not_in(
  x,
  y,
  message = "none of %s can be in %s",
  name_x = deparse(substitute(x)),
  name_y = nice_format(y)
)

Arguments

x	Value(s) to check are not in y
y	Set of values x must not be in
message	Message to output if some of x are in y
name_x	Name of x
name_y	Name of y

Details

None of x are in y