{"ast_node_type":"function","tokens":[{"end":36,"kind":"keyword","start":0,"text":"fn"}]}
    fn flip_binexpr_works_for_eq() {
    #[test]
        check_assist(flip_binexpr, "fn f() { let res = 1 ==$0 2; }", "fn f() { let res = 2 == 1; }")