use super::{MetroHash128, MetroHash64};
use std::mem::{self, size_of};
use std::fmt::Write;
use std::hash::Hasher;
const TEST_KEY_63: &'static [u8] = b"012345678901234567890123456789012345678901234567890123456789012";
fn hexlify<T>(value: &T) -> String {
let mut result = String::with_capacity(size_of::<T>());
unsafe {
let value_bytes: *const u8 = mem::transmute(value);
for i in 0..result.capacity() {
write!(result, "{:02X}", *value_bytes.offset(i as isize)).unwrap();
}
}
result
}
macro_rules! impl_test {
($test_fn: ident, $test_hasher: ident, $seed: expr, $expected: expr) => (
#[test]
fn $test_fn() {
let mut hasher = $test_hasher::with_seed($seed);
hasher.write(TEST_KEY_63);
let hash = hasher.finish();
assert_eq!(hexlify(&hash), hexlify(&$expected));
}
)
}
impl_test!(
test_metrohash64_0,
MetroHash64,
0,
[0x6Bu8, 0x75, 0x3D, 0xAE, 0x06, 0x70, 0x4B, 0xAD]
);
impl_test!(
test_metrohash64_1,
MetroHash64,
1,
[0x3Bu8, 0x0D, 0x48, 0x1C, 0xF4, 0xB9, 0xB8, 0xDF]
);
impl_test!(
test_metrohash128_0,
MetroHash128,
0,
[
0xC7u8,
0x7C,
0xE2,
0xBF,
0xA4,
0xED,
0x9F,
0x9B
]
);
impl_test!(
test_metrohash128_1,
MetroHash128,
1,
[
0x45u8,
0xA3,
0xCD,
0xB8,
0x38,
0x19,
0x9D,
0x7F
]
);