Function downcast_mut_second_root

libs/error-stack/tests/test_downcast.rs:61–74

()

#[test]
fn downcast_mut_second_root() {
    let mut report = create_report().expand();
    report.push(create_report().attach_opaque(AttachmentA(10)));

    let attachment = report
        .downcast_mut::<AttachmentA>()
        .expect("Attachment not found");
    attachment.0 += 10;

    let attachment = report
        .downcast_ref::<AttachmentA>()
        .expect("Attachment not found");
    assert_eq!(attachment.0, 20);
}

#[test]
fn downcast_mut_returns_outermost() {