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Replace synthetic fixture SHAs with deterministic SHA-1 hashing #45

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Merged
morgaesis merged 1 commit into from
Jul 11, 2026
Merged

Replace synthetic fixture SHAs with deterministic SHA-1 hashing #45

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8 changes: 7 additions & 1 deletion bench/fixtures/cases.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,8 @@
// `disallowedSources` assertions for fixture metadata or prompt-injection text
// that the reviewer must not adopt.

import crypto from "crypto";

import type { BenchmarkCaseInput } from "../src/harness";

type DisallowedSource =
Expand Down Expand Up @@ -46,7 +48,11 @@ type FixtureSpec = {
const repoFullName = "benchmark/example-fixtures";

function makeHeadSha(seed: number): string {
return seed.toString(16).padStart(2, "0").repeat(20).slice(0, 40);
return crypto
.createHash("sha1")
.update(seed.toString())
.digest("hex")
.slice(0, 40);
}

function makeDiff(path: string, hunks: FixtureHunk[]): string {
Expand Down
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