+#[cfg(feature = "borsh")]

+

+mod borsh_tests {

+ use borsh::BorshDeserialize;

+ use smol_str::{SmolStr, ToSmolStr};

+ use std::io::Cursor;

+

+ #[test]

+ fn borsh_serialize_stack() {

+ let smolstr_on_stack = "aßΔCaßδc".to_smolstr();

+ let mut buffer = Vec::new();

+ borsh::BorshSerialize::serialize(&smolstr_on_stack, &mut buffer).unwrap();

+ let mut cursor = Cursor::new(buffer);

+ let decoded: SmolStr = borsh::BorshDeserialize::deserialize_reader(&mut cursor).unwrap();

+ assert_eq!(smolstr_on_stack, decoded);

+ }

+ #[test]

+ fn borsh_serialize_heap() {

+ let smolstr_on_heap = "aßΔCaßδcaßΔCaßδcaßΔCaßδcaßΔCaßδcaßΔCaßδcaßΔCaßδcaßΔCaßδcaßΔCaßδcaßΔCaßδcaßΔCaßδcaßΔCaßδc".to_smolstr();

+ let mut buffer = Vec::new();

+ borsh::BorshSerialize::serialize(&smolstr_on_heap, &mut buffer).unwrap();

+ let mut cursor = Cursor::new(buffer);

+ let decoded: SmolStr = borsh::BorshDeserialize::deserialize_reader(&mut cursor).unwrap();

+ assert_eq!(smolstr_on_heap, decoded);

+ }

+ #[test]

+ fn borsh_non_utf8_stack() {

+ let invalid_utf8: Vec<u8> = vec![0xF0, 0x9F, 0x8F]; // Incomplete UTF-8 sequence

+

+ let wrong_utf8 = SmolStr::from(unsafe { String::from_utf8_unchecked(invalid_utf8) });

+ let mut buffer = Vec::new();

+ borsh::BorshSerialize::serialize(&wrong_utf8, &mut buffer).unwrap();

+ let mut cursor = Cursor::new(buffer);

+ let result = SmolStr::deserialize_reader(&mut cursor);

+ assert!(result.is_err());

+ }

+

+ #[test]

+ fn borsh_non_utf8_heap() {

+ let invalid_utf8: Vec<u8> = vec![

+ 0xC1, 0x8A, 0x5F, 0xE2, 0x3A, 0x9E, 0x3B, 0xAA, 0x01, 0x08, 0x6F, 0x2F, 0xC0, 0x32,

+ 0xAB, 0xE1, 0x9A, 0x2F, 0x4A, 0x3F, 0x25, 0x0D, 0x8A, 0x2A, 0x19, 0x11, 0xF0, 0x7F,

+ 0x0E, 0x80,

+ ];

+ let wrong_utf8 = SmolStr::from(unsafe { String::from_utf8_unchecked(invalid_utf8) });

+ let mut buffer = Vec::new();

+ borsh::BorshSerialize::serialize(&wrong_utf8, &mut buffer).unwrap();

+ let mut cursor = Cursor::new(buffer);

+ let result = SmolStr::deserialize_reader(&mut cursor);

+ assert!(result.is_err());

+ }

+}