Add test for error kind mapping

This commit is contained in:
Matthias Beyer 2016-06-25 18:36:04 +02:00
parent 320c1e4bd8
commit 5c8dbac34d

View file

@ -324,4 +324,48 @@ mod test {
assert_eq!(TestErrorKind::TestErrorKindA, e.err_type()); assert_eq!(TestErrorKind::TestErrorKindA, e.err_type());
assert_eq!(String::from("[testerrorkind B]"), format!("{}", e.cause().unwrap())); assert_eq!(String::from("[testerrorkind B]"), format!("{}", e.cause().unwrap()));
} }
#[test]
fn test_error_kind_mapping() {
use std::io::{Error, ErrorKind};
use self::error::{OkOrErr, MapErrInto};
use self::error::TestErrorKind;
let err : Result<(), _> = Err(Error::new(ErrorKind::Other, ""));
let err : Result<(), _> = err.map_err_into(TestErrorKind::TestErrorKindA);
assert!(err.is_err());
let err = err.unwrap_err();
match err.err_type() {
TestErrorKind::TestErrorKindA => assert!(true),
_ => assert!(false),
}
}
#[test]
fn test_error_kind_double_mapping() {
use std::io::{Error, ErrorKind};
use self::error::{OkOrErr, MapErrInto};
use self::error::TestErrorKind;
let err : Result<(), _> = Err(Error::new(ErrorKind::Other, ""));
let err : Result<(), _> = err.map_err_into(TestErrorKind::TestErrorKindA)
.map_err_into(TestErrorKind::TestErrorKindB);
assert!(err.is_err());
let err = err.unwrap_err();
match err.err_type() {
TestErrorKind::TestErrorKindB => assert!(true),
_ => assert!(false),
}
// not sure how to test that the inner error is of TestErrorKindA, actually...
match err.cause() {
Some(_) => assert!(true),
None => assert!(false),
}
}
} }