test: add http benchmark test

PR-URL: #12121
Refs: #12068
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

test/sequential/test-benchmark-http.js

@@ -0,0 +1,34 @@
+'use strict';
+
+const common = require('../common');
+
+if (!common.enoughTestMem) {
+  common.skip('Insufficient memory for HTTP benchmark test');
+  return;
+}
+
+// Minimal test for http benchmarks. This makes sure the benchmarks aren't
+// horribly broken but nothing more than that.
+
+// Because the http benchmarks use hardcoded ports, this should be in sequential
+// rather than parallel to make sure it does not conflict with tests that choose
+// random available ports.
+
+const assert = require('assert');
+const fork = require('child_process').fork;
+const path = require('path');
+
+const runjs = path.join(__dirname, '..', '..', 'benchmark', 'run.js');
+
+const child = fork(runjs, ['--set', 'dur=0.1',
+                           '--set', 'n=1',
+                           '--set', 'len=1',
+                           '--set', 'c=1',
+                           '--set', 'chunks=0',
+                           '--set', 'benchmarker=test-double',
+                           'http'],
+                   {env: {NODEJS_BENCHMARK_ZERO_ALLOWED: 1}});
+child.on('exit', (code, signal) => {
+  assert.strictEqual(code, 0);
+  assert.strictEqual(signal, null);
+});