macro_export not working?

code.rs

mod code {

    use macros; // compiler warning: unused import :-(

    #[test]
    fn asserts() {
        assert_eq!(1, 1);
        assert_ne!(1, 2); // compiler error: macro undefined :-(
    }
}

crate.rs

#[link(name = "junk", vers = "0.0")];
#[crate_type = "lib"];
#[warn(non_camel_case_types)];
#[warn(non_uppercase_statics)];
#[warn(unnecessary_qualification)];
extern mod std;
extern mod extra;
pub mod code;
pub mod macros;

macros.rs

#[macro_escape]
mod macros {

    // Same as the `assert_eq!` macro, but expect the values to be different
    // instead of the same.
    macro_rules! assert_ne (
        ($given:expr , $unexpected:expr) => (
            {
                let given_val = $given;
                let unexpected_val = $unexpected;
                // Check both directions of (in)equality....
                if (given_val == unexpected_val) || (unexpected_val == given_val) {
                    fail!("assertion failed: `!((left == right) || (right == left))` (left: `%?`, right: `%?`)",
                          given_val, unexpected_val);
                }
            }
        )
    )
}