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Add downcast_ref and downcast_mut tests

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This commit is contained in:
David Tolnay 2019-10-08 11:16:07 -07:00
parent 4d051e4b76
commit 3a1a7e855c
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1 changed files with 40 additions and 0 deletions
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40
tests/test_downcast.rs
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@ -22,3 +22,43 @@ fn test_downcast() {
.to_string(), .to_string(),
); );
} }
#[test]
fn test_downcast_ref() {
assert_eq!(
"oh no!",
*bail_literal().unwrap_err().downcast_ref::<&str>().unwrap(),
);
assert_eq!(
"oh no!",
bail_fmt().unwrap_err().downcast_ref::<String>().unwrap(),
);
assert_eq!(
"oh no!",
bail_error()
.unwrap_err()
.downcast_ref::<io::Error>()
.unwrap()
.to_string(),
);
}
#[test]
fn test_downcast_mut() {
assert_eq!(
"oh no!",
*bail_literal().unwrap_err().downcast_mut::<&str>().unwrap(),
);
assert_eq!(
"oh no!",
bail_fmt().unwrap_err().downcast_mut::<String>().unwrap(),
);
assert_eq!(
"oh no!",
bail_error()
.unwrap_err()
.downcast_mut::<io::Error>()
.unwrap()
.to_string(),
);
}