benchmark: add test-reporters

Author: avivkeller

benchmark/fixtures/basic-test-runner.js

@@ -0,0 +1,11 @@
+const { test } = require('node:test');
+
+test('should pass', () => {});
+test('should fail', () => { throw new Error('fail'); });
+test('should skip', { skip: true }, () => {});
+test('parent', (t) => {
+  t.test('should fail', () => { throw new Error('fail'); });
+  t.test('should pass but parent fail', (t, done) => {
+    setImmediate(done);
+  });
+});

benchmark/test_runner/test-reporters.js

@@ -0,0 +1,41 @@
+'use strict';
+
+const common = require('../common');
+const { run } = require('node:test');
+const reporters = require('node:test/reporters');
+const { Readable } = require('node:stream');
+const assert = require('node:assert');
+
+const bench = common.createBenchmark(main, {
+  n: [1e4],
+  reporter: Object.keys(reporters),
+});
+
+// No need to run this for every benchmark,
+// it should always be the same data.
+const stream = run({
+  files: ['../fixtures/basic-test-runner.js'],
+});
+let testResults;
+
+async function main({ n, reporter: r }) {
+  testResults ??= await stream.toArray();
+
+  // Create readable streams for each iteration
+  const readables = Array.from({ length: n }, () => Readable.from(testResults));
+
+  // Get the selected reporter
+  const reporter = reporters[r];
+
+  bench.start();
+
+  let noDead;
+  for (const readable of readables) {
+    // Process each readable stream through the reporter
+    noDead = await readable.compose(reporter).toArray();
+  }
+
+  bench.end(n);
+
+  assert.ok(noDead);
+}