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test: Generate distinct hashes

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Gen::just is the constant generator. Don't just return that!

(cherry picked from commit 8406da28773f050e00a006e4812e3ecbf919a2a9)
Change-Id: Ibfd0bd40f90942077a4720086ce0cd3bfabef79d
This commit is contained in:
Robert Hensing 2024-01-30 18:31:28 +01:00 committed by eldritch horrors
parent 2eec547d7d
commit 4b3dc66386
1 changed files with 11 additions and 4 deletions
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15
tests/unit/libutil-support/tests/hash.cc
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@ -11,10 +11,17 @@ using namespace nix;
Gen<Hash> Arbitrary<Hash>::arbitrary() Gen<Hash> Arbitrary<Hash>::arbitrary()
{ {
Hash hash(htSHA1); Hash prototype(htSHA1);
for (size_t i = 0; i < hash.hashSize; ++i) return
hash.hash[i] = *gen::arbitrary<uint8_t>(); gen::apply(
return gen::just(hash); [](const std::vector<uint8_t> & v) {
Hash hash(htSHA1);
assert(v.size() == hash.hashSize);
std::copy(v.begin(), v.end(), hash.hash);
return hash;
},
gen::container<std::vector<uint8_t>>(prototype.hashSize, gen::arbitrary<uint8_t>())
);
} }
} }