error-stack 0.2.0

A context-aware error-handling library that supports arbitrary attached user data
Documentation 
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#![cfg(feature = "std")]
#![cfg_attr(nightly, feature(provide_any))]
#![cfg_attr(all(nightly, feature = "std"), feature(error_generic_member_access))]

mod common;

use common::*;
use error_stack::Report;

#[test]
#[allow(deprecated)]
fn debug() {
    Report::set_debug_hook(|_report, fmt| fmt.write_str("debug hook")).expect("Unable to set hook");
    assert_eq!(format!("{:?}", create_report()), "debug hook");

    Report::set_debug_hook(|_, _| Ok(())).expect("Could not set the hook twice");
    assert_eq!(format!("{:?}", create_report()), "")
}

#[test]
#[allow(deprecated)]
fn display() {
    Report::set_display_hook(|_report, fmt| fmt.write_str("display hook"))
        .expect("Unable to set hook");
    assert_eq!(create_report().to_string(), "display hook");

    Report::set_display_hook(|_, _| Ok(())).expect("Could not set the hook twice");
    assert_eq!(create_report().to_string(), "")
}