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Wasm: test for LEB-128 decoder

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Brian Carroll 2022-01-09 11:11:37 +00:00
parent 9c0abcd0da
commit 3067358a33
1 changed files with 14 additions and 0 deletions
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14
compiler/gen_wasm/src/wasm_module/serialize.rs
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@ -436,4 +436,18 @@ mod tests {
&[0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x7f],
);
}
#[test]
fn test_decode_u32() {
assert_eq!(decode_u32(&[0]), Ok((0, 1)));
assert_eq!(decode_u32(&[64]), Ok((64, 1)));
assert_eq!(decode_u32(&[0x7f]), Ok((0x7f, 1)));
assert_eq!(decode_u32(&[0x80, 0x01]), Ok((0x80, 2)));
assert_eq!(decode_u32(&[0xff, 0x7f]), Ok((0x3fff, 2)));
assert_eq!(decode_u32(&[0x80, 0x80, 0x01]), Ok((0x4000, 3)));
assert_eq!(decode_u32(&[0xff, 0xff, 0xff, 0xff, 0x0f]), Ok((u32::MAX, 5)));
assert!(matches!(decode_u32(&[0x80; 6]), Err(_)));
assert!(matches!(decode_u32(&[0x80; 2]), Err(_)));
assert!(matches!(decode_u32(&[]), Err(_)));
}
}