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fix(core/rust): fix overflow in tests by properly using 0-terminated strings

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This commit is contained in:
matejcik 2022-06-09 12:48:24 +02:00 committed by matejcik
parent b4145b69a3
commit c7b6e8986e
1 changed files with 15 additions and 8 deletions
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23
core/embed/rust/src/trezorhal/bip39.rs
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@ -96,33 +96,40 @@ impl Wordlist {
#[cfg(test)]
mod tests {
use super::*;
use cstr_core::cstr;
const BIP39_WORD_COUNT: usize = ffi::BIP39_WORD_COUNT as usize;
#[test]
fn test_prefix_cmp() {
assert_eq!(unsafe { prefix_cmp("", "".as_ptr() as _) }, Ordering::Equal);
assert_eq!(unsafe { prefix_cmp("b", "".as_ptr() as _) }, Ordering::Less);
assert_eq!(
unsafe { prefix_cmp("b", "a".as_ptr() as _) },
unsafe { prefix_cmp("", cstr!("").as_ptr()) },
Ordering::Equal
);
assert_eq!(
unsafe { prefix_cmp("b", cstr!("").as_ptr()) },
Ordering::Less
);
assert_eq!(
unsafe { prefix_cmp("b", "b".as_ptr() as _) },
unsafe { prefix_cmp("b", cstr!("a").as_ptr()) },
Ordering::Less
);
assert_eq!(
unsafe { prefix_cmp("b", cstr!("b").as_ptr()) },
Ordering::Equal
);
assert_eq!(
unsafe { prefix_cmp("b", "below".as_ptr() as _) },
unsafe { prefix_cmp("b", cstr!("below").as_ptr()) },
Ordering::Equal
);
assert_eq!(
unsafe { prefix_cmp("b", "c".as_ptr() as _) },
unsafe { prefix_cmp("b", cstr!("c").as_ptr()) },
Ordering::Greater
);
assert_eq!(
unsafe { prefix_cmp("bartender", "bar".as_ptr() as _) },
unsafe { prefix_cmp("bartender", cstr!("bar").as_ptr()) },
Ordering::Less
);
}