Function context

libs/error-stack/tests/test_frame.rs:95–122

()

#[test]
fn context() {
    let mut report = create_report().change_context(ContextA(10));

    let flow = report.frames_mut(|frame| {
        assert_eq!(frame.sources().len(), 1);
        assert!(frame.is::<Location>(), "not a location frame");

        let source = frame
            .sources_mut()
            .first_mut()
            .expect("no source frame found");

        let context = source
            .downcast_mut::<ContextA>()
            .expect("not a context frame");
        context.0 += 10;
        ControlFlow::Break(())
    });
    assert!(flow.is_break(), "No location frame found");

    let frame = report.frames().next().expect("No location frame found");
    assert_eq!(frame.sources().len(), 1);
    let source = frame.sources().first().expect("no source frame found");
    let context = source
        .downcast_ref::<ContextA>()
        .expect("not a context frame");
    assert_eq!(context.0, 20);
}

#[test]
fn type_id() {