Files
node/test/parallel/test-bench-cli.js
T
James M Snell 57860ef5d4 test: expand test coverage of node:bench
Signed-off-by: James M Snell <jasnell@gmail.com>
Assisted-by: Opencode
PR-URL: https://github.com/nodejs/node/pull/65631
Reviewed-By: Filip Skokan <panva.ip@gmail.com>
2026-09-05 02:49:07 +00:00

839 lines
26 KiB
JavaScript

'use strict';
const common = require('../common');
const assert = require('assert');
const { spawnSync } = require('child_process');
const fs = require('fs');
const fixtures = require('../common/fixtures');
const tmpdir = require('../common/tmpdir');
const basicPattern = fixtures.path('bench-runner/[ab].*');
const spawnTimeout = common.platformTimeout(30_000);
tmpdir.refresh();
function spawnNode(args, options = undefined) {
const result = spawnSync(process.execPath, args, {
__proto__: null,
encoding: 'utf8',
timeout: spawnTimeout,
...options,
});
assert.ifError(result.error);
assert.strictEqual(result.signal, null);
return result;
}
function spawnBench(args, options = undefined) {
return spawnNode(['--no-warnings', '--bench', ...args], options);
}
function parseRecords(result) {
assert.strictEqual(result.stderr, '');
return parseOutput(result.stdout);
}
function parseOutput(output) {
return output.trim().split('\n').map((line) => JSON.parse(line));
}
{
const result = spawnBench([]);
assert.strictEqual(result.status, 1);
assert.strictEqual(result.stdout, '');
assert.match(result.stderr, /--bench requires at least one file or glob/);
}
{
const result = spawnBench(['does-not-exist-*.js']);
assert.strictEqual(result.status, 1);
assert.strictEqual(result.stdout, '');
assert.match(result.stderr, /^Could not find/);
}
if (common.canCreateSymLink()) {
const dangling = tmpdir.resolve('dangling.cjs');
fs.symlinkSync(tmpdir.resolve('missing.cjs'), dangling);
const result = spawnBench([dangling]);
assert.strictEqual(result.status, 1);
assert.strictEqual(result.stdout, '');
assert.match(result.stderr, /^Could not find/);
}
for (const { patterns, message } of [
{
patterns: [
fixtures.path('bench-runner/a.cjs'),
fixtures.path('bench-runner/b.mjs'),
],
message: /benchmark child process requires exactly one file/,
},
{
patterns: [fixtures.path('bench-runner/missing.cjs')],
message: /^Could not find/,
},
]) {
const result = spawnNode([
'--no-warnings',
'--require', fixtures.path('bench-runner/fake-ipc.cjs'),
'--bench',
...patterns,
], {
__proto__: null,
env: { __proto__: null, ...process.env, NODE_BENCH_CONTEXT: 'child' },
});
assert.strictEqual(result.status, 1);
assert.strictEqual(result.stdout, '');
assert.match(result.stderr, message);
}
{
const result = spawnBench(['--bench-reporter=json', basicPattern]);
assert.strictEqual(result.status, 0);
const records = parseRecords(result);
const plans = records.filter(
({ type }) => type === 'bench:plan').map(({ data }) => data);
const completions = records.filter(
({ type }) => type === 'bench:complete');
assert.deepStrictEqual(plans.map(({ name }) => name), ['alpha', 'beta']);
assert.deepStrictEqual(completions.map(({ data }) => data.name), [
'alpha',
'beta',
]);
assert.notStrictEqual(
completions[0].data.params.pid,
completions[1].data.params.pid,
);
assert.deepStrictEqual(completions.map(({ data }) => data.params.file), [
'a',
'b',
]);
assert.match(completions[0].data.samples[0].duration_ns, /^\d+$/);
assert(Number.isFinite(completions[0].data.summary.mean));
const summaries = records.filter(
({ type }) => type === 'bench:summary');
assert.strictEqual(summaries.length, 1);
assert.strictEqual(summaries[0].data.file, null);
assert.deepStrictEqual(summaries[0].data.counts, {
completed: 2,
failed: 0,
skipped: 0,
total: 2,
});
}
for (const isolation of ['process', 'none']) {
const result = spawnBench([
`--bench-isolation=${isolation}`,
'--bench-reporter=json',
fixtures.path('bench-runner/identity-entry-*.cjs'),
]);
assert.strictEqual(result.status, 0);
const records = parseRecords(result);
const plans = records.filter(
({ type }) => type === 'bench:plan').map(({ data }) => data);
const completions = records.filter(
({ type }) => type === 'bench:complete').map(({ data }) => data);
const summary = records.at(-1).data;
assert.strictEqual(plans.length, 2);
for (const plan of plans) {
const planIndex = records.findIndex(({ type, data }) =>
type === 'bench:plan' && data.fileRunId === plan.fileRunId);
const startIndex = records.findIndex(({ type, data }) =>
type === 'bench:start' && data.fileRunId === plan.fileRunId);
assert(planIndex < startIndex);
}
assert.strictEqual(completions.length, 2);
assert.strictEqual(completions[0].benchId, completions[1].benchId);
assert.strictEqual(completions[0].runId, completions[1].runId);
assert.strictEqual(completions[0].runId, summary.runId);
assert.notStrictEqual(
completions[0].fileRunId, completions[1].fileRunId);
assert.deepStrictEqual(completions.map(({ entryFile }) => entryFile), [
fixtures.path('bench-runner/identity-entry-a.cjs'),
fixtures.path('bench-runner/identity-entry-b.cjs'),
]);
assert.deepStrictEqual(completions.map(({ namePath }) => namePath), [
['shared suite', 'shared identity'],
['shared suite', 'shared identity'],
]);
assert.strictEqual(summary.fileRunId, null);
assert.strictEqual(summary.entryFile, null);
}
{
const result = spawnBench([
'--bench-reporter=json',
fixtures.path('bench-runner/identity-suite.cjs'),
]);
assert.strictEqual(result.status, 0);
const records = parseRecords(result);
const completions = records.filter(
({ type }) => type === 'bench:complete').map(({ data }) => data);
const parentId = JSON.stringify([
fixtures.path('bench-runner/identity-suite.cjs'),
['cross-module suite'],
]);
assert.deepStrictEqual(completions.map(({ name }) => name), [
'child a',
'child b',
]);
assert(completions.every((completion) =>
completion.parentId === parentId));
assert.deepStrictEqual(completions.map(({ namePath }) => namePath), [
['cross-module suite', 'child a'],
['cross-module suite', 'child b'],
]);
assert(completions.every(({ entryFile }) =>
entryFile === fixtures.path('bench-runner/identity-suite.cjs')));
}
for (const isolation of ['process', 'none']) {
const result = spawnBench([
'--require', fixtures.path('bench-runner/identity-preload.cjs'),
`--bench-isolation=${isolation}`,
'--bench-reporter=json',
fixtures.path('bench-runner/identity-entry-*.cjs'),
]);
assert.strictEqual(result.status, 0);
const records = parseRecords(result);
const preloads = records.filter(
({ type, data }) => type === 'bench:complete' &&
data.name === 'preload identity').map(({ data }) => data);
assert.strictEqual(preloads.length, isolation === 'process' ? 2 : 1);
assert.strictEqual(
new Set(preloads.map(({ fileRunId }) => fileRunId)).size,
preloads.length,
);
assert(preloads.every(({ entryFile }) => entryFile === null));
assert(preloads.every(
({ runId }) => runId === records.at(-1).data.runId));
}
{
const result = spawnBench([
'--bench-isolation=none',
'--bench-reporter=json',
fixtures.path('bench-runner/a.cjs'),
fixtures.path('bench-runner/identity-hook.cjs'),
]);
assert.strictEqual(result.status, 1);
const records = parseRecords(result);
const diagnostic = records.find(
({ type, data }) => type === 'bench:diagnostic' &&
data.message === 'scoped hook failed').data;
const completion = records.find(
({ type, data }) => type === 'bench:complete' &&
data.name === 'scoped hook benchmark').data;
assert.strictEqual(diagnostic.entryFile,
fixtures.path('bench-runner/identity-hook.cjs'));
assert.strictEqual(diagnostic.fileRunId, completion.fileRunId);
}
{
const result = spawnBench([
'--bench-reporter=json',
'--bench-isolation=none',
basicPattern,
]);
assert.strictEqual(result.status, 0);
const records = parseRecords(result);
const completions = records.filter(
({ type }) => type === 'bench:complete');
assert.strictEqual(completions.length, 2);
assert.strictEqual(
completions[0].data.params.pid,
completions[1].data.params.pid,
);
assert.strictEqual(records.at(-1).data.file, null);
}
{
const result = spawnBench([
'--bench-reporter=json',
'--bench-name-pattern=selected',
'--bench-samples=2',
'--bench-warmup=3',
fixtures.path('bench-runner/options.cjs'),
]);
assert.strictEqual(result.status, 0);
const records = parseRecords(result);
const plans = records.filter(
({ type }) => type === 'bench:plan').map(({ data }) => data);
const samples = records.filter(({ type }) => type === 'bench:sample');
assert.deepStrictEqual(samples.map(({ data }) => data.operations), [4, 5]);
assert.deepStrictEqual(plans.map((plan) => ({
name: plan.name,
samples: plan.samples,
selected: plan.selected,
skip: plan.skip,
timeout: plan.timeout,
warmup: plan.warmup,
yieldBetweenSamples: plan.yieldBetweenSamples,
})), [
{
name: 'selected',
samples: 2,
selected: true,
skip: undefined,
timeout: null,
warmup: 3,
yieldBetweenSamples: true,
},
{
name: 'filtered out',
samples: 2,
selected: false,
skip: 'name pattern',
timeout: null,
warmup: 3,
yieldBetweenSamples: true,
},
]);
const completions = records.filter(
({ type }) => type === 'bench:complete');
const selected = completions.find(({ data }) => data.name === 'selected').data;
assert.deepStrictEqual(selected.params, {
boolean: true,
number: 42,
string: 'value',
});
assert.strictEqual(selected.samples.length, 2);
assert.strictEqual(
selected.summary.mean,
(selected.samples[0].rate + selected.samples[1].rate) / 2,
);
assert(Number.isFinite(selected.summary.medianConfidenceInterval.lower));
const filtered = completions.find(
({ data }) => data.name === 'filtered out').data;
assert.strictEqual(filtered.skip, 'name pattern');
}
{
const result = spawnBench([
'--bench-reporter=json',
fixtures.path('bench-runner/error.cjs'),
]);
assert.strictEqual(result.status, 1);
const records = parseRecords(result);
const failure = records.find(
({ type }) => type === 'bench:complete').data;
assert.deepStrictEqual(failure.params, { kind: 'structured-error' });
assert.strictEqual(failure.error.name, 'Error');
assert.strictEqual(failure.error.message, 'benchmark fixture failed');
assert.strictEqual(failure.error.code, 'ERR_BENCHMARK_FIXTURE');
assert.deepStrictEqual(failure.error.cause, { value: '42' });
assert.match(failure.error.stack, /error\.cjs/);
assert.strictEqual(records.at(-1).data.success, false);
}
{
const result = spawnBench([
'--bench-isolation=none',
'--bench-reporter=json',
fixtures.path('bench-runner/throws-null.cjs'),
]);
assert.strictEqual(result.status, 1);
const records = parseRecords(result);
const diagnostic = records.find(
({ type }) => type === 'bench:diagnostic').data;
assert.strictEqual(diagnostic.message, 'null');
assert.strictEqual(records.at(-1).data.success, false);
}
for (const isolation of ['process', 'none']) {
const result = spawnBench([
`--bench-isolation=${isolation}`,
'--bench-reporter=json',
fixtures.path('bench-runner/load-error-after-declaration.cjs'),
]);
assert.strictEqual(result.status, 1);
const records = parseRecords(result);
assert(records.some(({ type, data }) =>
type === 'bench:diagnostic' &&
data.message === 'load failed after declaration'));
const plan = records.find(({ type }) => type === 'bench:plan').data;
const completion = records.find(
({ type }) => type === 'bench:complete').data;
assert.strictEqual(plan.name, 'declared before load error');
assert.strictEqual(plan.selected, true);
assert.strictEqual(completion.name, plan.name);
assert.strictEqual(completion.error, undefined);
assert.strictEqual(completion.samples.length, 1);
assert.strictEqual(records.at(-1).data.counts.completed, 1);
}
{
const result = spawnBench([
'--bench-reporter=json',
fixtures.path('bench-runner/recorded-detail.cjs'),
]);
assert.strictEqual(result.status, 0);
const records = parseRecords(result);
const completion = records.find(
({ type }) => type === 'bench:complete').data;
assert.strictEqual(completion.samples.length, 1);
const { rate, ...sample } = completion.samples[0];
assert.deepStrictEqual(sample, {
detail: { index: 0, phase: 'measurement', value: '42' },
duration_ns: '4',
operations: 2,
});
assert(Math.abs(rate - 500_000_000) < 1);
}
{
const result = spawnBench([
'--bench-reporter=json',
fixtures.path('bench-runner/diagnostic.cjs'),
]);
assert.strictEqual(result.status, 0);
const records = parseRecords(result);
const diagnostic = records.find(
({ type }) => type === 'bench:diagnostic').data;
const completion = records.find(
({ type }) => type === 'bench:complete').data;
assert.deepStrictEqual(diagnostic.message, {
name: 'node:bench:test:diagnostic',
message: { value: '42' },
});
assert.strictEqual(diagnostic.level, 'info');
assert.strictEqual(diagnostic.phase, 'measurement');
assert.strictEqual(diagnostic.index, 0);
assert.strictEqual(diagnostic.detail, undefined);
assert.strictEqual(diagnostic.benchId, completion.benchId);
assert.strictEqual(diagnostic.fileRunId, completion.fileRunId);
assert.strictEqual(completion.error, undefined);
}
for (const { file, status } of [
{ file: 'a.cjs', status: 0 },
{ file: 'error.cjs', status: 1 },
]) {
const result = spawnBench([
`--bench-reporter=${fixtures.fileURL('bench-runner/verifying-reporter.cjs')}`,
fixtures.path(`bench-runner/${file}`),
]);
assert.strictEqual(result.status, status);
assert.strictEqual(result.stderr, '');
assert.strictEqual(result.stdout, 'verified\n');
}
{
const result = spawnBench([
'--require',
fixtures.path('bench-runner/preload.cjs'),
'--bench-reporter=json',
fixtures.path('bench-runner/preloaded.cjs'),
]);
assert.strictEqual(result.status, 0);
const records = parseRecords(result);
const completion = records.find(
({ type }) => type === 'bench:complete');
assert.deepStrictEqual(completion.data.params, { preloaded: true });
}
for (const isolation of ['process', 'none']) {
const result = spawnBench([
`--bench-isolation=${isolation}`,
'--bench-reporter=json',
'--import', fixtures.fileURL('bench-runner/import.mjs'),
fixtures.path('bench-runner/imported.cjs'),
]);
assert.strictEqual(result.status, 0);
const records = parseRecords(result);
const completion = records.find(
({ type }) => type === 'bench:complete');
assert.deepStrictEqual(completion.data.params, { imported: 'loaded' });
}
{
const lock = tmpdir.resolve('serial.lock');
const result = spawnBench([
'--bench-reporter=json',
fixtures.path('bench-runner/serial-[ab].cjs'),
], {
env: { __proto__: null, ...process.env, NODE_BENCH_LOCK: lock },
});
assert.strictEqual(result.status, 0);
const records = parseRecords(result);
assert.deepStrictEqual(records.filter(
({ type }) => type === 'bench:complete').map(({ data }) => data.name), [
'serial a',
'serial b',
]);
assert.strictEqual(fs.existsSync(lock), false);
}
{
const result = spawnBench([
'--bench-reporter=json',
fixtures.path('bench-runner/ipc.cjs'),
]);
assert.strictEqual(result.status, 0);
const records = parseRecords(result);
assert.strictEqual(records.find(
({ type }) => type === 'bench:complete').data.name, 'user IPC');
assert.strictEqual(records.at(-1).data.file,
fixtures.path('bench-runner/ipc.cjs'));
}
for (const { kind, message } of [
{ kind: 'sequence', message: /valid record sequence/ },
{ kind: 'record', message: /not a valid benchmark record/ },
{ kind: 'identity', message: /not a valid benchmark record/ },
{ kind: 'name-path', message: /not a valid benchmark record/ },
{ kind: 'plan', message: /not a valid benchmark plan/ },
{ kind: 'timeout', message: /not a valid benchmark plan/ },
{ kind: 'diagnostic', message: /not a valid benchmark diagnostic/ },
{ kind: 'diagnostic-order', message: /valid lifecycle sequence/ },
{ kind: 'summary', message: /not a valid benchmark summary/ },
]) {
const result = spawnBench([
'--bench-reporter=json',
fixtures.path('bench-runner/malformed-record.cjs'),
], {
env: {
__proto__: null,
...process.env,
NODE_BENCH_MALFORMED_RECORD: kind,
},
});
assert.strictEqual(result.status, 1);
const records = parseRecords(result);
const diagnostics = records.filter(
({ type }) => type === 'bench:diagnostic');
assert(diagnostics.some(({ data }) => message.test(data.message)));
assert.strictEqual(records.at(-1).data.success, false);
}
{
const result = spawnBench([
'--bench-reporter=json',
fixtures.path('bench-runner/malformed-plan-order.mjs'),
]);
assert.strictEqual(result.status, 1);
const records = parseRecords(result);
const diagnostics = records.filter(
({ type }) => type === 'bench:diagnostic');
assert(diagnostics.some(
({ data }) => /valid lifecycle sequence/.test(data.message)));
assert.strictEqual(records.at(-1).data.success, false);
}
{
const result = spawnBench([
'--bench-isolation=none',
'--bench-reporter=json',
fixtures.path('bench-runner/a.cjs'),
fixtures.path('bench-runner/exit-code.cjs'),
]);
assert.strictEqual(result.status, 1);
const records = parseRecords(result);
const diagnostic = records.find(({ type, data }) =>
type === 'bench:diagnostic' && /set exit code/.test(data.message)).data;
assert.strictEqual(diagnostic.entryFile, null);
assert.strictEqual(diagnostic.fileRunId, null);
assert.strictEqual(diagnostic.file, null);
}
for (const { mode, message } of [
{ mode: 'code', message: /failed with exit code 2/ },
{ mode: 'late', message: /failed with exit code 2/ },
...common.isWindows ? [] : [
{ mode: 'signal', message: /failed with signal SIGTERM/ },
],
]) {
const result = spawnBench([
'--bench-reporter=json',
fixtures.path('bench-runner/abrupt-exit.cjs'),
], {
env: {
__proto__: null,
...process.env,
NODE_BENCH_EXIT_MODE: mode,
},
});
assert.strictEqual(result.status, 1);
const records = parseRecords(result);
const diagnostics = records.filter(
({ type }) => type === 'bench:diagnostic');
assert(diagnostics.some(({ data }) => message.test(data.message)));
}
for (const mode of ['callback', 'throw']) {
const result = spawnBench([
'--bench-reporter=json',
fixtures.path('bench-runner/send-error.cjs'),
], {
env: {
__proto__: null,
...process.env,
NODE_BENCH_SEND_ERROR: mode,
},
});
assert.strictEqual(result.status, 1);
const records = parseRecords(result);
const diagnostics = records.filter(
({ type }) => type === 'bench:diagnostic');
const messages = diagnostics.map(({ data }) => data.message).join('');
assert.match(messages, /benchmark send/);
}
{
const result = spawnBench([
'--bench-reporter=json',
'--random-seed=17',
'--stack-trace-limit=17',
fixtures.path('bench-runner/v8-option.cjs'),
]);
assert.strictEqual(result.status, 0);
const records = parseRecords(result);
assert.strictEqual(records.find(
({ type }) => type === 'bench:complete').data.name, 'V8 option');
}
if (common.hasInspector) {
const result = spawnBench([
'--inspect=0',
'--bench-reporter=json',
fixtures.path('bench-runner/inspector.cjs'),
]);
assert.strictEqual(result.status, 0);
const records = parseRecords(result);
const diagnostics = records.filter(
({ type }) => type === 'bench:diagnostic')
.map(({ data }) => data.message).join('');
assert.match(diagnostics, /Debugger listening on ws:\/\//);
const completion = records.find(
({ type }) => type === 'bench:complete').data;
assert.strictEqual(completion.params.inspectPort, '--inspect-port=0');
}
{
const result = spawnBench([
'--bench-reporter=json',
'--bench-reporter-destination=stderr',
fixtures.path('bench-runner/output.cjs'),
]);
assert.strictEqual(result.status, 0);
assert.strictEqual(result.stdout, '');
const records = parseOutput(result.stderr);
const diagnostics = records.filter(
({ type }) => type === 'bench:diagnostic');
assert.deepStrictEqual(diagnostics.map(({ data }) => data.stream).sort(), [
'stderr',
'stdout',
]);
assert(diagnostics.some(
({ data }) => data.message === 'benchmark stdout\n'));
assert(diagnostics.some(
({ data }) => data.message === 'benchmark stderr\n'));
}
{
const result = spawnBench([
'--bench-reporter=json',
fixtures.path('bench-runner/utf8-output.cjs'),
]);
assert.strictEqual(result.status, 0);
const records = parseRecords(result);
const output = records.filter(
({ type, data }) => type === 'bench:diagnostic' &&
data.stream === 'stdout').map(({ data }) => data.message).join('');
assert.strictEqual(output, 'split:\u20ac\n');
}
{
const result = spawnBench([
'--bench-reporter=json',
fixtures.path('bench-runner/run.cjs'),
]);
assert.strictEqual(result.status, 1);
const records = parseRecords(result);
const diagnostic = records.find(
({ type }) => type === 'bench:diagnostic');
assert.match(diagnostic.data.message,
/run\(\) cannot be called from a file run with --bench/);
assert.strictEqual(records.at(-1).data.success, false);
}
{
const result = spawnBench([
`--bench-reporter=${fixtures.fileURL('bench-runner/failing-reporter.cjs')}`,
fixtures.path('bench-runner/a.cjs'),
]);
assert.strictEqual(result.status, 1);
assert.match(result.stderr, /benchmark reporter failed/);
}
{
const result = spawnBench([
`--bench-reporter=${fixtures.fileURL('bench-runner/slow-reporter.cjs')}`,
fixtures.path('bench-runner/many-records.cjs'),
]);
assert.strictEqual(result.status, 0);
assert.strictEqual(result.stderr, '');
const report = JSON.parse(result.stdout);
assert.strictEqual(report.samples, 30);
assert.strictEqual(report.stdout,
Array.from({ length: 30 }, (_, i) => `${i}\n`).join(''));
}
{
const result = spawnBench([
'--bench-reporter=json',
fixtures.path('bench-runner/acknowledged-records.mjs'),
]);
assert.strictEqual(result.status, 0);
assert.strictEqual(result.stderr, '');
const records = parseRecords(result);
const diagnostics = records.filter(
({ type }) => type === 'bench:diagnostic');
assert.strictEqual(diagnostics.length, 32);
assert(diagnostics.every(
({ data }) => /^acknowledged 10\d{3}$/.test(data.message)));
assert.strictEqual(records.at(-1).data.success, true);
}
{
const result = spawnBench([
`--bench-reporter=${fixtures.fileURL('bench-runner/destroying-reporter.cjs')}`,
fixtures.path('bench-runner/a.cjs'),
]);
assert.strictEqual(result.status, 1);
assert.match(result.stderr, /benchmark reporter closed the stream/);
}
{
const result = spawnBench([
'--bench-reporter=json',
'--bench-reporter-destination=stdout',
'--bench-reporter=data:text/javascript,export default 0',
'--bench-reporter-destination=stderr',
fixtures.path('bench-runner/a.cjs'),
]);
assert.strictEqual(result.status, 1);
assert.match(result.stderr, /is not a valid reporter/);
}
{
const result = spawnBench([
'--bench-reporter=json',
fixtures.path('bench-runner/exit-code.cjs'),
]);
assert.strictEqual(result.status, 1);
const records = parseRecords(result);
assert(records.some(({ type, data }) =>
type === 'bench:diagnostic' && /set exit code/.test(data.message)));
assert.strictEqual(records.at(-1).data.success, false);
}
{
const result = spawnNode([
'--no-warnings',
`--experimental-config-file=${fixtures.path('bench-runner/node.config.json')}`,
fixtures.path('bench-runner/a.cjs'),
]);
assert.strictEqual(result.status, 0);
const records = parseRecords(result);
assert.strictEqual(records.find(
({ type }) => type === 'bench:complete').data.samples.length, 1);
}
{
const destination = tmpdir.resolve('bench.txt');
const result = spawnBench([
'--bench-reporter=json',
'--bench-reporter-destination=stdout',
'--bench-reporter=spec',
`--bench-reporter-destination=${destination}`,
fixtures.path('bench-runner/a.cjs'),
]);
assert.strictEqual(result.status, 0);
parseRecords(result);
assert.match(fs.readFileSync(destination, 'utf8'),
/^benchmark \| samples \| mean rate/);
}
{
const result = spawnBench([fixtures.path('bench-runner/a.cjs')]);
assert.strictEqual(result.status, 0);
assert.strictEqual(result.stderr, '');
assert.match(result.stdout, /^benchmark \| samples \| mean rate/);
assert.match(result.stdout, /1 completed, 0 failed, 0 skipped/);
}
{
const result = spawnBench([
'--bench-reporter=json',
'--bench-reporter=spec',
fixtures.path('bench-runner/a.cjs'),
]);
assert.strictEqual(result.status, 1);
assert.strictEqual(result.stdout, '');
assert.match(result.stderr,
/must match the number of specified '.*destination'/);
}
for (const { args, message } of [
{
args: ['--bench-isolation=invalid', 'unused.js'],
message: /invalid value for --bench-isolation/,
},
{
args: ['--bench-samples=0', 'unused.js'],
message: /--bench-samples must be greater than 0/,
},
{
args: ['--bench-warmup=4294967296', 'unused.js'],
message: /--bench-warmup.*out of range/,
},
{
args: ['--bench-samples=2x', 'unused.js'],
message: /invalid value for --bench-samples/,
},
{
args: ['--bench-warmup=abc', 'unused.js'],
message: /invalid value for --bench-warmup/,
},
{
args: ['--bench-name-pattern=[', 'unused.js'],
message: /invalid regular expression/,
},
{
args: ['--eval=1', 'unused.js'],
message: /either --bench or --eval can be used, not both/,
},
{
args: ['--interactive', 'unused.js'],
message: /either --bench or --interactive can be used, not both/,
},
{
args: ['--watch', 'unused.js'],
message: /either --bench or --watch can be used, not both/,
},
{
args: ['--watch-path=.', 'unused.js'],
message: /either --bench or --watch can be used, not both/,
},
{
args: ['--check', 'unused.js'],
message: /either --bench or --check can be used, not both/,
},
{
args: ['--test', 'unused.js'],
message: /either --bench or --test can be used, not both/,
},
]) {
const result = spawnBench(args);
assert.notStrictEqual(result.status, 0);
assert.match(result.stderr, message);
}