mod file_lib_tests {
    use flesh::ast::{eval, lex, SymTable};
    use flesh::stdlib::static_stdlib;

    #[test]
    fn test_fexists() {
        let document = "(exists? \"/tmp\")";
        let result = "true";

        let mut syms = SymTable::new();
        static_stdlib(&mut syms);
        assert_eq!(
            *eval(&lex(&document.to_string()).unwrap(), &mut syms)
                .unwrap()
                .to_string(),
            result.to_string(),
        );
    }

    #[test]
    fn test_fexists_doesnt() {
        let document = "(exists? \"cargo.timtam\")";
        let result = "false";

        let mut syms = SymTable::new();
        static_stdlib(&mut syms);
        assert_eq!(
            *eval(&lex(&document.to_string()).unwrap(), &mut syms)
                .unwrap()
                .to_string(),
            result.to_string(),
        );
    }

    #[test]
    fn test_write_file() {
        let document = "
          (let ((s \"test\")
                (t \"/tmp/flesh-lib-test-file-1\"))
            (write-file t s)
            (echo (read-file t))
            (eq? (read-file t) s))";
        let result = "true";

        let mut syms = SymTable::new();
        static_stdlib(&mut syms);
        assert_eq!(
            *eval(&lex(&document.to_string()).unwrap(), &mut syms)
                .unwrap()
                .to_string(),
            result.to_string(),
        );
    }

    #[test]
    fn test_append_file() {
        let document = "
          (let ((s \"test\")
                (t \"/tmp/flesh-lib-test-file-2\"))
            (write-file t s)
            (append-file t s)
            (eq? (read-file t)
                (concat s s)))";
        let result = "true";

        let mut syms = SymTable::new();
        static_stdlib(&mut syms);
        assert_eq!(
            *eval(&lex(&document.to_string()).unwrap(), &mut syms)
                .unwrap()
                .to_string(),
            result.to_string(),
        );
    }

}