rhai/src/tests.rs

//! Module containing unit tests.
#![cfg(test)]

/// This test is to make sure no code changes increase the sizes of critical data structures.
#[test]
fn check_struct_sizes() {
    use crate::*;
    use std::mem::size_of;

    const PACKED: bool = cfg!(all(
        target_pointer_width = "32",
        feature = "only_i32",
        feature = "no_float"
    ));

    assert_eq!(size_of::<Dynamic>(), if PACKED { 8 } else { 16 });
    assert_eq!(size_of::<Option<Dynamic>>(), if PACKED { 8 } else { 16 });
    #[cfg(not(feature = "no_position"))]
    assert_eq!(size_of::<Position>(), 4);
    assert_eq!(size_of::<ast::Expr>(), 16);
    assert_eq!(size_of::<Option<ast::Expr>>(), 16);
    assert_eq!(size_of::<ast::Stmt>(), 32);
    assert_eq!(size_of::<Option<ast::Stmt>>(), 32);
    assert_eq!(
        size_of::<FnPtr>(),
        if cfg!(feature = "no_smartstring") {
            64
        } else {
            80
        }
    );
    assert_eq!(size_of::<Scope>(), 464);
    assert_eq!(size_of::<LexError>(), 56);
    assert_eq!(
        size_of::<ParseError>(),
        if cfg!(feature = "no_position") { 8 } else { 16 }
    );
    assert_eq!(size_of::<EvalAltResult>(), 72);
}