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pj
e3bb9aeeb2
Replace the env-driven parity harness with a shared scenario module and a committed golden the node picker asserts independently. The goja side asserts the same golden, so neither runtime invokes the other at test time.
25 lines
1.0 KiB
TypeScript
25 lines
1.0 KiB
TypeScript
import assert from "node:assert/strict";
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import { readFileSync } from "node:fs";
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import { fileURLToPath } from "node:url";
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import { test } from "node:test";
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import { PARITY_STEPS, runParity } from "./parity-harness.ts";
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const goldenPath = fileURLToPath(new URL("./fixtures/parity-golden.json", import.meta.url));
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const golden = JSON.parse(readFileSync(goldenPath, "utf8"));
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// The node side of the W2 acceptance gate: the shared picker's stream for the
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// fixed parity scenario must match the committed golden byte-for-byte. The goja
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// test asserts the SAME golden, so a match on both sides proves cross-runtime
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// parity. A drift here means pick.ts, the corpus, or the Pcg changed.
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test("node picker matches the cross-runtime golden", () => {
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const stream = runParity();
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assert.equal(stream.length, PARITY_STEPS);
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assert.deepEqual(stream, golden);
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});
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// Determinism: a second run from the same seed yields the identical stream.
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test("node picker is deterministic across repeated runs", () => {
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assert.deepEqual(runParity(), runParity());
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});
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