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union-parity test: find the vectors by walking up, so the test runs from source as well as from dist-test

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Meta Vens 2026-10-11 03:54:30 +02:00
commit 21dec1ef56
1 changed files with 8 additions and 1 deletions
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9
packages/cultcache-ts/test/union-parity.test.ts
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@ -1,4 +1,5 @@
import assert from "node:assert/strict";
import { existsSync } from "node:fs";
import { mkdtemp, readFile, writeFile } from "node:fs/promises";
import { tmpdir } from "node:os";
import { join, resolve } from "node:path";
@ -18,7 +19,13 @@ const { boolean, bytes, lazy, list, nullable, number, slots, string, union, unit
// The golden is tests/vectors/union-parity, written by the C# reference. Everything below that is bytes or an expected
// outcome is read from those committed files; only the value the payload must decode to is spelled here.
const vectors = resolve(__dirname, "../../../../tests/vectors/union-parity");
function findVectors(from: string): string {
for (let dir = from; ; dir = resolve(dir, "..")) {
if (existsSync(join(dir, "tests", "vectors", "union-parity"))) return join(dir, "tests", "vectors", "union-parity");
if (resolve(dir, "..") === dir) throw new Error("tests/vectors/union-parity not found above the test.");
}
}
const vectors = findVectors(__dirname);
const read = async (name: string) => new Uint8Array(await readFile(join(vectors, name)));
// The string the C# writer put inside every refusal payload, to prove a refusal never echoes the payload.