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fix(errorsn): Try harder to confine the user. (#388)

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Evan Carroll 2020-05-06 14:12:15 -05:00 committed by GitHub
parent 1b4590b42b
commit 2b20c8a0f5
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1 changed files with 8 additions and 2 deletions
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10
exercises/error_handling/errorsn.rs
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@ -2,8 +2,10 @@
// This is a bigger error exercise than the previous ones! // This is a bigger error exercise than the previous ones!
// You can do it! :) // You can do it! :)
// //
// Edit the `read_and_validate` function so that it compiles and // Edit the `read_and_validate` function ONLY. Don't create any Errors
// passes the tests... so many things could go wrong! // that do not already exist.
//
// So many things could go wrong!
// //
// - Reading from stdin could produce an io::Error // - Reading from stdin could produce an io::Error
// - Parsing the input could produce a num::ParseIntError // - Parsing the input could produce a num::ParseIntError
@ -30,6 +32,10 @@ fn read_and_validate(b: &mut dyn io::BufRead) -> Result<PositiveNonzeroInteger,
answer answer
} }
//
// Nothing below this needs to be modified
//
// This is a test helper function that turns a &str into a BufReader. // This is a test helper function that turns a &str into a BufReader.
fn test_with_str(s: &str) -> Result<PositiveNonzeroInteger, Box<dyn error::Error>> { fn test_with_str(s: &str) -> Result<PositiveNonzeroInteger, Box<dyn error::Error>> {
let mut b = io::BufReader::new(s.as_bytes()); let mut b = io::BufReader::new(s.as_bytes());