(result, position - start_position)
}
-
-macro_rules! impl_test_unsigned_leb128 {
- ($test_name:ident, $write_fn_name:ident, $read_fn_name:ident, $int_ty:ident) => (
- #[test]
- fn $test_name() {
- let mut stream = Vec::new();
-
- for x in 0..62 {
- $write_fn_name(&mut stream, (3u64 << x) as $int_ty);
- }
-
- let mut position = 0;
- for x in 0..62 {
- let expected = (3u64 << x) as $int_ty;
- let (actual, bytes_read) = $read_fn_name(&stream[position ..]);
- assert_eq!(expected, actual);
- position += bytes_read;
- }
- assert_eq!(stream.len(), position);
- }
- )
-}
-
-impl_test_unsigned_leb128!(test_u16_leb128, write_u16_leb128, read_u16_leb128, u16);
-impl_test_unsigned_leb128!(test_u32_leb128, write_u32_leb128, read_u32_leb128, u32);
-impl_test_unsigned_leb128!(test_u64_leb128, write_u64_leb128, read_u64_leb128, u64);
-impl_test_unsigned_leb128!(test_u128_leb128, write_u128_leb128, read_u128_leb128, u128);
-impl_test_unsigned_leb128!(test_usize_leb128, write_usize_leb128, read_usize_leb128, usize);
-
-#[test]
-fn test_signed_leb128() {
- let values: Vec<_> = (-500..500).map(|i| i * 0x12345789ABCDEF).collect();
- let mut stream = Vec::new();
- for &x in &values {
- write_signed_leb128(&mut stream, x);
- }
- let mut pos = 0;
- for &x in &values {
- let (value, bytes_read) = read_signed_leb128(&mut stream, pos);
- pos += bytes_read;
- assert_eq!(x, value);
- }
- assert_eq!(pos, stream.len());
-}