let input = "use asdf::qwop;
assert_eq!(2+2, 4);";
let expected = "#![allow(unused)]
-extern crate asdf;
+extern crate r#asdf;
fn main() {
use asdf::qwop;
assert_eq!(2+2, 4);
let input = "use asdf::qwop;
assert_eq!(2+2, 4);";
let expected = "#![feature(sick_rad)]
-extern crate asdf;
+extern crate r#asdf;
fn main() {
use asdf::qwop;
assert_eq!(2+2, 4);
opts.attrs.push("feature(hella_dope)".to_string());
let expected = "#![feature(sick_rad)]
#![feature(hella_dope)]
-extern crate asdf;
+extern crate r#asdf;
fn main() {
use asdf::qwop;
assert_eq!(2+2, 4);
let expected = "#![allow(unused)]
extern crate hella_qwop;
-extern crate asdf;
+extern crate r#asdf;
fn main() {
assert_eq!(asdf::foo, 4);
}"