You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
63 lines
1.3 KiB
63 lines
1.3 KiB
4 months ago
|
use anyhow::anyhow;
|
||
|
|
use std::error::Error as StdError;
|
||
|
|
use std::fmt::{self, Display};
|
||
|
|
use std::io;
|
||
|
|
|
||
|
|
#[derive(Debug)]
|
||
|
|
enum TestError {
|
||
|
|
Io(io::Error),
|
||
|
|
}
|
||
|
|
|
||
|
|
impl Display for TestError {
|
||
|
|
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
|
||
|
|
match self {
|
||
|
|
TestError::Io(e) => Display::fmt(e, formatter),
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
impl StdError for TestError {
|
||
|
|
fn source(&self) -> Option<&(dyn StdError + 'static)> {
|
||
|
|
match self {
|
||
|
|
TestError::Io(io) => Some(io),
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn test_literal_source() {
|
||
|
|
let error = anyhow!("oh no!");
|
||
|
|
assert!(error.source().is_none());
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn test_variable_source() {
|
||
|
|
let msg = "oh no!";
|
||
|
|
let error = anyhow!(msg);
|
||
|
|
assert!(error.source().is_none());
|
||
|
|
|
||
|
|
let msg = msg.to_owned();
|
||
|
|
let error = anyhow!(msg);
|
||
|
|
assert!(error.source().is_none());
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn test_fmt_source() {
|
||
|
|
let error = anyhow!("{} {}!", "oh", "no");
|
||
|
|
assert!(error.source().is_none());
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn test_io_source() {
|
||
|
|
let io = io::Error::new(io::ErrorKind::Other, "oh no!");
|
||
|
|
let error = anyhow!(TestError::Io(io));
|
||
|
|
assert_eq!("oh no!", error.source().unwrap().to_string());
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn test_anyhow_from_anyhow() {
|
||
|
|
let error = anyhow!("oh no!").context("context");
|
||
|
|
let error = anyhow!(error);
|
||
|
|
assert_eq!("oh no!", error.source().unwrap().to_string());
|
||
|
|
}
|