test: add minimal test for net benchmarks

test/sequential/test-benchmark-net.js

@@ -0,0 +1,22 @@
+'use strict';
+
+require('../common');
+
+// Minimal test for net benchmarks. This makes sure the benchmarks aren't
+// horribly broken but nothing more than that.
+
+// Because the net 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', 'net']);
+child.on('exit', (code, signal) => {
+  assert.strictEqual(code, 0);
+  assert.strictEqual(signal, null);
+});