test: test clusters --inspect-brk and --debug-brk

test/parallel/test-cluster-inspector-debug-brk.js

@@ -0,0 +1,47 @@
+'use strict';
+// Flags: --inspect={PORT}
+// This test ensures that flag --inspect-brk and --debug-brk works properly
+const common = require('../common');
+const assert = require('assert');
+const cluster = require('cluster');
+const net = require('net');
+
+const debuggerPort = common.PORT;
+const script = common.fixturesDir + '/empty.js';
+
+function fail() {
+  assert(0); // `node --debug-brk script.js` should not quit
+}
+
+if (cluster.isMaster) {
+
+  function fork(offset, execArgv) {
+    cluster.setupMaster(execArgv);
+    let worker = cluster.fork();
+
+    worker.on('exit', fail);
+
+    let socket = net.connect(debuggerPort + offset, () => {
+      socket.end();
+      worker.removeListener('exit', fail);
+      worker.kill();
+    });
+
+    return worker;
+  }
+
+  assert.strictEqual(process.debugPort, debuggerPort);
+
+  let workers = [
+    fork(1, [`--inspect-brk`, script]),
+    fork(2, [`--inspect-brk=${debuggerPort}`, script]),
+    fork(3, [`--debug-brk`, script]),
+    fork(4, [`--debug-brk=${debuggerPort}`, script])
+  ];
+
+  process.on('exit', function() {
+    workers.map((wk) => {
+      assert.equal(wk.process.killed, true);
+    });
+  });
+}