message: Test for Constants
diff: @@ -38,3 +38,20 @@ impl Constants {
  *Lazy::force(&RES)
  }
  }
  +
  +#[cfg(test)]
  +mod tests {
  + use crate::{environment::Globals, eval::compiler::constants::Constants};
  +
  + #[test]
  + fn test_constants() {
  + assert_eq!(
  + Globals::standard().get_frozen("len").unwrap(),
  + Constants::new().fn_len
  + );
  + assert_eq!(
  + Globals::extended().get_frozen("len").unwrap(),
  + Constants::new().fn_len
  + );
  + }
  +}
  