[squash] convert test-benchmark-dns

test/parallel/test-benchmark-dns.js

@@ -2,26 +2,9 @@
 
 require('../common');
 
-// Minimal test for dns benchmarks. This makes sure the benchmarks aren't
-// horribly broken but nothing more than that.
-
-const assert = require('assert');
-const fork = require('child_process').fork;
-const path = require('path');
-
-const runjs = path.join(__dirname, '..', '..', 'benchmark', 'run.js');
+const runBenchmark = require('../common/benchmark');
 
 const env = Object.assign({}, process.env,
                           { NODEJS_BENCHMARK_ZERO_ALLOWED: 1 });
 
-const child = fork(runjs,
-                   ['--set', 'n=1',
-                    '--set', 'all=false',
-                    '--set', 'name=127.0.0.1',
-                    'dns'],
-                   { env });
-
-child.on('exit', (code, signal) => {
-  assert.strictEqual(code, 0);
-  assert.strictEqual(signal, null);
-});
+runBenchmark('dns', ['n=1', 'all=false', 'name=127.0.0.1'], env);