#[cfg(test)]
mod test_grammar_display {
    use crate::test_grammar_helper::new_grammar;

    #[test]
    fn test_display() -> Result<(), Box<dyn std::error::Error>> {
        new_grammar().map(|g| println!("{g}"))
    }
}

#[cfg(test)]
mod test_grammar_firsts {
    use crate::test_grammar_helper::new_grammar;
    use std::io::Write;

    #[test]
    fn test_firsts() -> Result<(), Box<dyn std::error::Error>> {
        let mut grammar = new_grammar()?;

        grammar.compute_firsts()?;

        let mut lock = std::io::stdout().lock();

        writeln!(lock, "grammar firsts: {:?}", grammar.firsts)?;
        writeln!(lock, "grammar first nodes: {:?}", grammar.first_nodes).map_err(Into::into)
    }
}

#[cfg(test)]
mod test_grammar_left_closure;