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1d64b59664
The previous implementation swapped lower and upper 64-bits of a result of modular addition, so the function was non-associative.
15 lines
606 B
Rust
15 lines
606 B
Rust
use super::*;
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// Check that `combine_commutative` is order independent.
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#[test]
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fn combine_commutative_is_order_independent() {
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let a = Fingerprint::new(0xf6622fb349898b06, 0x70be9377b2f9c610);
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let b = Fingerprint::new(0xa9562bf5a2a5303c, 0x67d9b6c82034f13d);
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let c = Fingerprint::new(0x0d013a27811dbbc3, 0x9a3f7b3d9142ec43);
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let permutations = [(a, b, c), (a, c, b), (b, a, c), (b, c, a), (c, a, b), (c, b, a)];
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let f = a.combine_commutative(b).combine_commutative(c);
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for p in &permutations {
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assert_eq!(f, p.0.combine_commutative(p.1).combine_commutative(p.2));
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}
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}
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