Macro k9::assert_err [−][src]
macro_rules! assert_err {
($left : expr) => { ... };
($left : expr, $description : expr) => { ... };
}
Expand description
Asserts if value is Err(E). panics if it is not
use k9::assert_err;
let result: Result<(), _> = Err("invalid path");
assert_err!(result);