michael/itoa
michael
/
itoa
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Assert formatted integer parses back to the same value

This commit is contained in:
David Tolnay 2022-05-15 13:50:29 -07:00
parent 4f1481a12a
commit 9825ed8b12
No known key found for this signature in database
GPG Key ID: F9BA143B95FF6D82
1 changed files with 27 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
fuzz/fuzz_targets/fuzz_itoa.rs
View File

@ -20,21 +20,32 @@ enum IntegerInput {
Usize(usize),
}
fuzz_target!(|input: IntegerInput| {
let mut buffer = itoa::Buffer::new();
let string = match input {
IntegerInput::I8(val) => buffer.format(val),
IntegerInput::U8(val) => buffer.format(val),
IntegerInput::I16(val) => buffer.format(val),
IntegerInput::U16(val) => buffer.format(val),
IntegerInput::I32(val) => buffer.format(val),
IntegerInput::U32(val) => buffer.format(val),
IntegerInput::I64(val) => buffer.format(val),
IntegerInput::U64(val) => buffer.format(val),
IntegerInput::I128(val) => buffer.format(val),
IntegerInput::U128(val) => buffer.format(val),
IntegerInput::Isize(val) => buffer.format(val),
IntegerInput::Usize(val) => buffer.format(val),
macro_rules! test_itoa {
($val:expr) => {
match $val {
val => {
let mut buffer = itoa::Buffer::new();
let string = buffer.format(val);
assert!(string.len() <= mem::size_of::<itoa::Buffer>());
assert_eq!(val, string.parse().unwrap());
}
}
};
assert!(string.len() <= mem::size_of::<itoa::Buffer>());
}
fuzz_target!(|input: IntegerInput| {
match input {
IntegerInput::I8(val) => test_itoa!(val),
IntegerInput::U8(val) => test_itoa!(val),
IntegerInput::I16(val) => test_itoa!(val),
IntegerInput::U16(val) => test_itoa!(val),
IntegerInput::I32(val) => test_itoa!(val),
IntegerInput::U32(val) => test_itoa!(val),
IntegerInput::I64(val) => test_itoa!(val),
IntegerInput::U64(val) => test_itoa!(val),
IntegerInput::I128(val) => test_itoa!(val),
IntegerInput::U128(val) => test_itoa!(val),
IntegerInput::Isize(val) => test_itoa!(val),
IntegerInput::Usize(val) => test_itoa!(val),
}
});