Add a runner for Node's test/parallel files

tests/node-parallel/run.mjs builds files from a Node.js checkout's
test/parallel with scriptc, runs each executable in that directory, and
compares its exit status with Node's, writing a pass, fail or refused
verdict and the first error line per file (results.json, results.md).
--common minimal (the default) runs the files against a minimal
test/common (common/index.cjs, common/wpt.cjs) whose helpers keep Node's
semantics, so a verdict measures the module under test; --common node
uses Node's own test/common.
This commit is contained in:
Chris Tate
2026-10-24 00:30:36 -05:00
parent de5557ce5a
commit bfb360a659
4 changed files with 320 additions and 0 deletions
+23
View File
@@ -0,0 +1,23 @@
# Node test/parallel files
`run.mjs` builds files from a Node.js checkout's `test/parallel` with scriptc, runs each executable in that directory, and compares its exit status with Node's. It records a verdict per file: `pass` (same exit status), `fail` (different exit status), or `refused` (the build failed), with the first error line.
```bash
git clone --depth 1 --branch v24.22.0 https://github.com/nodejs/node /path/to/node
node tests/node-parallel/run.mjs --node /path/to/node --pattern '^test-(url-|whatwg-url-|querystring)'
```
Options:
- `--node`: a Node.js checkout, or its `test` directory. Use the version in `.node-version`.
- `--pattern`: a regular expression over file names in `test/parallel`.
- `--common`: `minimal` (the default) or `node`.
- `minimal` copies the selected files into `<out>/tree/test/parallel` and uses `common/index.cjs` and `common/wpt.cjs` from this directory as `test/common/index.js` and `test/common/wpt.js`, with the checkout's `test/fixtures` and `test/common/fixtures.js`. The minimal common has the helpers these files use (`mustCall`, `mustNotCall`, `skip`, `expectWarning`, `invalidArgTypeHelper`, `spawnPromisified`, `hasIntl`, `isWindows`, ...) with Node's semantics, so a verdict measures the module under test rather than Node's full `test/common`.
- `node` builds the files in place against Node's own `test/common`.
- `--out`: where executables and results go (default `node_modules/.cache/scriptc-node-parallel`).
- `--cli`: the scriptc CLI entry (default `packages/cli/dist/main.js`).
- `--jobs`: concurrent files (default 4).
Node runs each file with its `// Flags:` line. Results are written to `<out>/results.json` and `<out>/results.md`.
Before a lane relies on the minimal common, run its files under Node in `<out>/tree/test/parallel`: they should all pass there.
+131
View File
@@ -0,0 +1,131 @@
"use strict";
// A minimal test/common for building Node's test/parallel files with scriptc:
// the helpers those files use, with the semantics of Node's
// test/common/index.js. Add a helper here, with Node's semantics, when a
// lane's files need it.
const assert = require("assert");
const { inspect } = require("util");
const hasIntl = true;
const isDebug = false;
const isWindows = process.platform === "win32";
const mustCallChecks = [];
function runCallChecks(exitCode) {
if (exitCode !== 0) return;
const failed = mustCallChecks.filter((context) => {
if ("minimum" in context) return context.actual < context.minimum;
return context.actual !== context.exact;
});
for (const context of failed) {
console.log(
"Mismatched %s function calls. Expected %s, actual %d.",
context.name,
String(context.exact ?? context.minimum),
context.actual,
);
}
if (failed.length) process.exit(1);
}
function noop() {}
function mustCallInner(fn, criteria, field) {
if (typeof fn === "number") {
criteria = fn;
fn = noop;
} else if (fn === undefined) {
fn = noop;
}
if (criteria === undefined) criteria = 1;
const context = { actual: 0, name: fn.name || "<anonymous>" };
context[field] = criteria;
if (mustCallChecks.length === 0) process.on("exit", runCallChecks);
mustCallChecks.push(context);
return function (...args) {
context.actual++;
return fn.apply(this, args);
};
}
function mustCall(fn, exact) {
return mustCallInner(fn, exact, "exact");
}
function mustCallAtLeast(fn, minimum) {
return mustCallInner(fn, minimum, "minimum");
}
function mustNotCall(msg) {
return function mustNotCall() {
assert.fail(msg || "function should not have been called");
};
}
function skip(msg) {
console.log(`1..0 # Skipped: ${msg}`);
process.exit(0);
}
function expectWarning(name, expected, code) {
if (typeof expected === "string") expected = [[expected, code]];
else if (expected.length !== 0 && !Array.isArray(expected[0]))
expected = [[expected[0], expected[1]]];
const check = mustCall((warning) => {
const [message, warningCode] = expected.shift();
assert.strictEqual(warning.name, name);
if (typeof message === "string") assert.strictEqual(warning.message, message);
else assert.match(warning.message, message);
assert.strictEqual(warning.code, warningCode);
}, expected.length);
process.on("warning", (warning) => {
if (warning.name !== name)
throw new TypeError(`"${warning.name}" was triggered without being expected.`);
check(warning);
});
}
function invalidArgTypeHelper(input) {
if (input == null) return ` Received ${input}`;
if (typeof input === "function") return ` Received function ${input.name}`;
if (typeof input === "object") {
const name = input.constructor?.name;
if (typeof name === "string" && name !== "") return ` Received an instance of ${name}`;
return ` Received ${inspect(input, { depth: -1 })}`;
}
let inspected = inspect(input, { colors: false });
if (inspected.length > 28) inspected = `${inspected.slice(inspected, 0, 25)}...`;
return ` Received type ${typeof input} (${inspected})`;
}
function spawnPromisified(...args) {
const { spawn } = require("child_process");
let stderr = "";
let stdout = "";
const child = spawn(...args);
child.stderr.setEncoding("utf8");
child.stderr.on("data", (data) => {
stderr += data;
});
child.stdout.setEncoding("utf8");
child.stdout.on("data", (data) => {
stdout += data;
});
return new Promise((resolve, reject) => {
child.on("close", (code, signal) => resolve({ code, signal, stderr, stdout }));
child.on("error", (code, signal) => reject({ code, signal, stderr, stdout }));
});
}
module.exports = {
hasIntl,
isDebug,
isWindows,
mustCall,
mustCallAtLeast,
mustNotCall,
skip,
expectWarning,
invalidArgTypeHelper,
spawnPromisified,
};
+32
View File
@@ -0,0 +1,32 @@
"use strict";
// The harness object of Node's test/common/wpt.js, without its WPT runner.
const assert = require("assert");
const harness = {
test: (fn, desc) => {
try {
fn();
} catch (err) {
console.error(`In ${desc}:`);
throw err;
}
},
assert_equals: assert.strictEqual,
assert_true: (value, message) => assert.strictEqual(value, true, message),
assert_false: (value, message) => assert.strictEqual(value, false, message),
assert_throws: (code, func, desc) => {
assert.throws(
func,
function (err) {
return typeof err === "object" && "name" in err && err.name.startsWith(code.name);
},
desc,
);
},
assert_array_equals: assert.deepStrictEqual,
assert_unreached(desc) {
assert.fail(`Reached unreachable code: ${desc}`);
},
};
module.exports = { harness };
+134
View File
@@ -0,0 +1,134 @@
// Builds Node's test/parallel files with scriptc and runs them next to Node.
// See README.md for the options.
import { spawn } from "node:child_process";
import {
cpSync,
existsSync,
mkdirSync,
readFileSync,
readdirSync,
rmSync,
symlinkSync,
writeFileSync,
} from "node:fs";
import { dirname, join, resolve } from "node:path";
import { fileURLToPath } from "node:url";
import { parseArgs } from "node:util";
const here = dirname(fileURLToPath(import.meta.url));
const repo = resolve(here, "../..");
const { values } = parseArgs({
options: {
node: { type: "string" },
pattern: { type: "string" },
common: { type: "string", default: "minimal" },
out: { type: "string", default: join(repo, "node_modules/.cache/scriptc-node-parallel") },
cli: { type: "string", default: join(repo, "packages/cli/dist/main.js") },
jobs: { type: "string", default: "4" },
},
});
if (!values.node || !values.pattern || !["minimal", "node"].includes(values.common)) {
console.error(
"usage: node tests/node-parallel/run.mjs --node <node checkout> --pattern <regex> [--common minimal|node] [--out <dir>] [--cli <scriptc main.js>] [--jobs <n>]",
);
process.exit(2);
}
const nodeTest = existsSync(join(values.node, "test", "parallel"))
? join(values.node, "test")
: values.node;
const pattern = new RegExp(values.pattern);
const out = resolve(values.out);
mkdirSync(out, { recursive: true });
// The minimal lane copies the selected files into a tree whose test/common is
// this directory's index.cjs and wpt.cjs, next to the checkout's fixtures and
// common/fixtures.js.
let testRoot = nodeTest;
const files = readdirSync(join(nodeTest, "parallel"))
.filter((name) => name.endsWith(".js") && pattern.test(name))
.sort();
if (values.common === "minimal") {
testRoot = join(out, "tree", "test");
rmSync(join(out, "tree"), { recursive: true, force: true });
mkdirSync(join(testRoot, "parallel"), { recursive: true });
mkdirSync(join(testRoot, "common"), { recursive: true });
for (const name of files)
cpSync(join(nodeTest, "parallel", name), join(testRoot, "parallel", name));
symlinkSync(join(nodeTest, "fixtures"), join(testRoot, "fixtures"));
cpSync(join(nodeTest, "common", "fixtures.js"), join(testRoot, "common", "fixtures.js"));
cpSync(join(here, "common", "index.cjs"), join(testRoot, "common", "index.js"));
cpSync(join(here, "common", "wpt.cjs"), join(testRoot, "common", "wpt.js"));
}
function run(cmd, args, opts) {
return new Promise((done) => {
const child = spawn(cmd, args, { ...opts, stdio: ["ignore", "pipe", "pipe"] });
let stdout = "";
let stderr = "";
child.stdout.on("data", (d) => (stdout += d));
child.stderr.on("data", (d) => (stderr += d));
const timer = setTimeout(() => child.kill("SIGKILL"), opts.timeout);
child.on("close", (code, signal) => {
clearTimeout(timer);
done({ code, signal, stdout, stderr });
});
});
}
const firstCause = (text) =>
(
text.split("\n").find((line) => /error|Error|assert|SC\d{4}/.test(line)) ??
text.split("\n")[0] ??
""
)
.replaceAll(testRoot, "test")
.trim()
.slice(0, 300);
async function one(file) {
const dir = join(testRoot, "parallel");
const source = readFileSync(join(dir, file), "utf8");
const flags = (/^\/\/ Flags: (.*)$/m.exec(source)?.[1] ?? "").split(/\s+/).filter(Boolean);
const node = await run(process.execPath, [...flags, file], { cwd: dir, timeout: 120_000 });
const exe = join(out, "bin", `${file}.exe`);
mkdirSync(join(out, "bin"), { recursive: true });
const build = await run(process.execPath, [values.cli, "build", file, "-o", exe], {
cwd: dir,
timeout: 900_000,
});
const result = { file, flags: flags.join(" "), nodeExit: node.code };
if (build.code !== 0) {
result.verdict = "refused";
result.cause = firstCause(build.stdout + build.stderr);
return result;
}
const native = await run(exe, [], { cwd: dir, timeout: 120_000 });
result.exit = native.code ?? native.signal;
result.verdict = native.code === node.code ? "pass" : "fail";
if (result.verdict !== "pass") result.cause = firstCause(native.stderr + native.stdout);
return result;
}
const results = [];
const queue = [...files];
await Promise.all(
Array.from({ length: Number(values.jobs) }, async () => {
for (let file = queue.shift(); file !== undefined; file = queue.shift()) {
const result = await one(file);
results.push(result);
console.log(`${result.verdict.padEnd(8)} ${file}${result.cause ? ` ${result.cause}` : ""}`);
}
}),
);
results.sort((a, b) => (a.file < b.file ? -1 : 1));
const count = (verdict) => results.filter((r) => r.verdict === verdict).length;
const table = [
"| file | verdict | first cause |",
"| --- | --- | --- |",
...results.map((r) => `| ${r.file} | ${r.verdict} | ${(r.cause ?? "").replaceAll("|", "\\|")} |`),
"",
`pass ${count("pass")}, fail ${count("fail")}, refused ${count("refused")} of ${results.length} (test/common: ${values.common})`,
];
writeFileSync(join(out, "results.json"), `${JSON.stringify(results, null, 2)}\n`);
writeFileSync(join(out, "results.md"), `${table.join("\n")}\n`);
console.log(table.at(-1));