{"ast_node_type":"function","tokens":[{"end":69,"kind":"keyword","start":0,"text":"\"fn"}]}
        "fn foo() {} fn bar() {} fn main() { foo(  5 )  +bar(   ) }",
        "foo($x  ) +    bar() ==>> bar($x)",
        expect![["fn foo() {} fn bar() {} fn main() { bar(5) }"]],