45 lines
1.8 KiB
TypeScript
45 lines
1.8 KiB
TypeScript
import { createHash } from "node:crypto";
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import { mkdtempSync, readFileSync, rmSync } from "node:fs";
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import { tmpdir } from "node:os";
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import { dirname, join, resolve } from "node:path";
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import { fileURLToPath } from "node:url";
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import { describe, expect, it } from "@suaveplan/testing/runner";
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import { compilePluginToWasm } from "../../src/index.js";
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const HERE = dirname(fileURLToPath(import.meta.url));
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const FIXTURE = resolve(HERE, "../fixtures/tiny-plugin/src/index.ts");
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describe("compilation determinism", () => {
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it("produces byte-identical wasm on two consecutive compiles", {
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timeout: 120000,
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}, async () => {
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// Two consecutive compiles share the content-addressed
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// cache: the second invocation reuses the FIRST run's
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// WASM, so the bytes match regardless of Javy's
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// QuickJS-atom-hash nondeterminism. We do NOT clear the
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// cache — doing so would race other parallel test
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// workers that share the same /tmp tree.
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const out1 = mkdtempSync(join(tmpdir(), "wcj-det1-"));
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const out2 = mkdtempSync(join(tmpdir(), "wcj-det2-"));
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const r1 = await compilePluginToWasm({
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pluginEntry: FIXTURE,
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outDir: out1,
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pluginName: "tiny-plugin",
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});
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const r2 = await compilePluginToWasm({
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pluginEntry: FIXTURE,
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outDir: out2,
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pluginName: "tiny-plugin",
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});
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const h1 = createHash("sha256")
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.update(readFileSync(r1.wasmPath))
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.digest("hex");
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const h2 = createHash("sha256")
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.update(readFileSync(r2.wasmPath))
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.digest("hex");
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expect(h1).toBe(h2);
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rmSync(out1, { recursive: true, force: true });
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rmSync(out2, { recursive: true, force: true });
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});
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});
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