Function sources

libs/error-stack/tests/test_frame.rs:38–64

()

#[test]
fn sources() {
    let mut report_a = create_report().attach_opaque(AttachmentA(10)).expand();
    let report_b = create_report().attach_opaque(AttachmentA(20));
    report_a.push(report_b);
    let mut report = report_a.attach_opaque(AttachmentB(30));

    let flow = report.frames_mut(|frame| {
        assert_eq!(frame.sources().len(), 2);

        for source in frame.sources_mut() {
            let attachment = source
                .downcast_mut::<AttachmentA>()
                .expect("Wrong source frame");
            attachment.0 += 5;
        }
        ControlFlow::Break(())
    });
    assert!(flow.is_break(), "No frames");

    let frame = report.frames().next().expect("No frames");
    for (source, expect) in zip(frame.sources(), [15, 25]) {
        let attachment = source
            .downcast_ref::<AttachmentA>()
            .expect("Wrong source frame");
        assert_eq!(attachment.0, expect);
    }
}

#[test]
fn printable_attachment() {