test: refactor test-net-server-bind

* Use common.mustNotCall() and common.mustCall() as appropriate
* Use block scoping
* Move assertions out of `exit` handler and into callbacks
* Order assert.strictEqual() args per docs
* Remove console.log() calls
* Move test from `parallel` to `sequential` so `common.PORT` can be used
  without conflicting with OS-provided ports in other `parallel` tests

PR-URL: https://github.com/nodejs/node/pull/13273
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

test/parallel/test-net-server-bind.js

@@ -1,86 +0,0 @@
-'use strict';
-const common = require('../common');
-const assert = require('assert');
-const net = require('net');
-
-
-// With only a callback, server should get a port assigned by the OS
-
-let address0;
-const server0 = net.createServer(common.noop);
-
-server0.listen(function() {
-  address0 = server0.address();
-  console.log('address0 %j', address0);
-  server0.close();
-});
-
-
-// No callback to listen(), assume we can bind in 100 ms
-
-let address1;
-let connectionKey1;
-const server1 = net.createServer(common.noop);
-
-server1.listen(common.PORT);
-
-setTimeout(function() {
-  address1 = server1.address();
-  connectionKey1 = server1._connectionKey;
-  console.log('address1 %j', address1);
-  server1.close();
-}, 100);
-
-
-// Callback to listen()
-
-let address2;
-const server2 = net.createServer(common.noop);
-
-server2.listen(common.PORT + 1, function() {
-  address2 = server2.address();
-  console.log('address2 %j', address2);
-  server2.close();
-});
-
-
-// Backlog argument
-
-let address3;
-const server3 = net.createServer(common.noop);
-
-server3.listen(common.PORT + 2, '0.0.0.0', 127, function() {
-  address3 = server3.address();
-  console.log('address3 %j', address3);
-  server3.close();
-});
-
-
-// Backlog argument without host argument
-
-let address4;
-const server4 = net.createServer(common.noop);
-
-server4.listen(common.PORT + 3, 127, function() {
-  address4 = server4.address();
-  console.log('address4 %j', address4);
-  server4.close();
-});
-
-
-process.on('exit', function() {
-  assert.ok(address0.port > 100);
-  assert.strictEqual(common.PORT, address1.port);
-
-  let expectedConnectionKey1;
-
-  if (address1.family === 'IPv6')
-    expectedConnectionKey1 = `6::::${address1.port}`;
-  else
-    expectedConnectionKey1 = `4:0.0.0.0:${address1.port}`;
-
-  assert.strictEqual(connectionKey1, expectedConnectionKey1);
-  assert.strictEqual(common.PORT + 1, address2.port);
-  assert.strictEqual(common.PORT + 2, address3.port);
-  assert.strictEqual(common.PORT + 3, address4.port);
-});

test/sequential/test-net-server-bind.js

@@ -0,0 +1,64 @@
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const net = require('net');
+
+
+// With only a callback, server should get a port assigned by the OS
+{
+  const server = net.createServer(common.mustNotCall());
+
+  server.listen(common.mustCall(function() {
+    assert.ok(server.address().port > 100);
+    server.close();
+  }));
+}
+
+// No callback to listen(), assume we can bind in 100 ms
+{
+  const server = net.createServer(common.mustNotCall());
+
+  server.listen(common.PORT);
+
+  setTimeout(function() {
+    const address = server.address();
+    assert.strictEqual(address.port, common.PORT);
+
+    if (address.family === 'IPv6')
+      assert.strictEqual(server._connectionKey, `6::::${address.port}`);
+    else
+      assert.strictEqual(server._connectionKey, `4:0.0.0.0:${address.port}`);
+
+    server.close();
+  }, 100);
+}
+
+// Callback to listen()
+{
+  const server = net.createServer(common.mustNotCall());
+
+  server.listen(common.PORT + 1, common.mustCall(function() {
+    assert.strictEqual(server.address().port, common.PORT + 1);
+    server.close();
+  }));
+}
+
+// Backlog argument
+{
+  const server = net.createServer(common.mustNotCall());
+
+  server.listen(common.PORT + 2, '0.0.0.0', 127, common.mustCall(function() {
+    assert.strictEqual(server.address().port, common.PORT + 2);
+    server.close();
+  }));
+}
+
+// Backlog argument without host argument
+{
+  const server = net.createServer(common.mustNotCall());
+
+  server.listen(common.PORT + 3, 127, common.mustCall(function() {
+    assert.strictEqual(server.address().port, common.PORT + 3);
+    server.close();
+  }));
+}