Function maps_duplicate_keys

tests/all/component_model/dynamic.rs:313–342

()

#[test]
fn maps_duplicate_keys() -> Result<()> {
    let engine = super::map_engine();
    let mut store = Store::new(&engine, ());

    let component = Component::new(&engine, make_echo_component("(map u32 string)", 8))?;
    let instance = Linker::new(&engine).instantiate(&mut store, &component)?;
    let func = instance.get_func(&mut store, "echo").unwrap();

    // Create a map with duplicate keys - Vec preserves all entries
    let input_map = vec![
        (Val::U32(1), Val::String("first".into())),
        (Val::U32(1), Val::String("last".into())), // Duplicate key
        (Val::U32(2), Val::String("two".into())),
    ];
    let input = Val::Map(input_map);

    let mut output = [Val::Bool(false)];
    func.call(&mut store, &[input.clone()], &mut output)?;

    // Verify all entries are preserved (Vec doesn't deduplicate)
    match &output[0] {
        Val::Map(output_map) => {
            // Should have 3 entries (Vec preserves duplicates)
            assert_eq!(output_map.len(), 3);
        }
        _ => panic!("expected map"),
    }

    Ok(())
}

#[test]
fn maps_all_primitive_types() -> Result<()> {