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Add tests to the CRC32 module

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Mathijs van de Nes 2015-06-24 08:43:23 +02:00
parent 6cd6b752e3
commit d3f0743bfa
1 changed files with 19 additions and 0 deletions
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19
src/crc32.rs
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@ -103,3 +103,22 @@ impl<R: Read> Read for Crc32Reader<R>
Ok(count)
}
}
#[cfg(test)]
mod test {
#[test]
fn samples() {
assert_eq!(super::update(0, b""), 0);
// test vectors from the iPXE project (input and output are bitwise negated)
assert_eq!(super::update(!0x12345678, b""), !0x12345678);
assert_eq!(super::update(!0xffffffff, b"hello world"), !0xf2b5ee7a);
assert_eq!(super::update(!0xffffffff, b"hello"), !0xc9ef5979);
assert_eq!(super::update(!0xc9ef5979, b" world"), !0xf2b5ee7a);
// Some vectors found on Rosetta code
assert_eq!(super::update(0, b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"), 0x190A55AD);
assert_eq!(super::update(0, b"\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF"), 0xFF6CAB0B);
assert_eq!(super::update(0, b"\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0A\x0B\x0C\x0D\x0E\x0F\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1A\x1B\x1C\x1D\x1E\x1F"), 0x91267E8A);
}
}