test: add more test cases of server.listen option

* Test listening with different handle and fd
* Test listening without callback

PR-URL: https://github.com/nodejs/node/pull/11778/
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Sam Roberts <vieuxtech@gmail.com>

test/parallel/test-net-server-listen-handle.js

@@ -0,0 +1,152 @@
+'use strict';
+
+const common = require('../common');
+const assert = require('assert');
+const net = require('net');
+const fs = require('fs');
+const uv = process.binding('uv');
+const TCP = process.binding('tcp_wrap').TCP;
+const Pipe = process.binding('pipe_wrap').Pipe;
+
+common.refreshTmpDir();
+
+function closeServer() {
+  return common.mustCall(function() {
+    this.close();
+  });
+}
+
+// server.listen(pipe) creates a new pipe wrap,
+// so server.close() doesn't actually unlink this existing pipe.
+// It needs to be unlinked separately via handle.close()
+function closePipeServer(handle) {
+  return common.mustCall(function() {
+    this.close();
+    handle.close();
+  });
+}
+
+let counter = 0;
+
+// Avoid conflict with listen-path
+function randomPipePath() {
+  return common.PIPE + '-listen-handle-' + (counter++);
+}
+
+function randomHandle(type) {
+  let handle, errno, handleName;
+  if (type === 'tcp') {
+    handle = new TCP();
+    errno = handle.bind('0.0.0.0', 0);
+    handleName = 'arbitrary tcp port';
+  } else {
+    const path = randomPipePath();
+    handle = new Pipe();
+    errno = handle.bind(path);
+    handleName = `pipe ${path}`;
+  }
+
+  if (errno < 0) {  // uv.errname requires err < 0
+    assert(errno >= 0, `unable to bind ${handleName}: ${uv.errname(errno)}`);
+  }
+  if (!common.isWindows) {  // fd doesn't work on windows
+    // err >= 0 but fd = -1, should not happen
+    assert.notStrictEqual(handle.fd, -1,
+                          `Bound ${handleName} has fd -1 and errno ${errno}`);
+  }
+  return handle;
+}
+
+// Not a public API, used by child_process
+{
+  // Test listen(tcp)
+  net.createServer()
+    .listen(randomHandle('tcp'))
+    .on('listening', closeServer());
+  // Test listen(tcp, cb)
+  net.createServer()
+    .listen(randomHandle('tcp'), closeServer());
+}
+
+function randomPipes(number) {
+  const arr = [];
+  for (let i = 0; i < number; ++i) {
+    arr.push(randomHandle('pipe'));
+  }
+  return arr;
+}
+
+// Not a public API, used by child_process
+if (!common.isWindows) {  // Windows doesn't support {fd: <n>}
+  const handles = randomPipes(2);  // generate pipes in advance
+  // Test listen(pipe)
+  net.createServer()
+    .listen(handles[0])
+    .on('listening', closePipeServer(handles[0]));
+  // Test listen(pipe, cb)
+  net.createServer()
+    .listen(handles[1], closePipeServer(handles[1]));
+}
+
+{
+  // Test listen({handle: tcp}, cb)
+  net.createServer()
+    .listen({handle: randomHandle('tcp')}, closeServer());
+  // Test listen({handle: tcp})
+  net.createServer()
+    .listen({handle: randomHandle('tcp')})
+    .on('listening', closeServer());
+  // Test listen({_handle: tcp}, cb)
+  net.createServer()
+    .listen({_handle: randomHandle('tcp')}, closeServer());
+  // Test listen({_handle: tcp})
+  net.createServer()
+    .listen({_handle: randomHandle('tcp')})
+    .on('listening', closeServer());
+}
+
+if (!common.isWindows) {  // Windows doesn't support {fd: <n>}
+  // Test listen({fd: tcp.fd}, cb)
+  net.createServer()
+    .listen({fd: randomHandle('tcp').fd}, closeServer());
+  // Test listen({fd: tcp.fd})
+  net.createServer()
+    .listen({fd: randomHandle('tcp').fd})
+    .on('listening', closeServer());
+}
+
+if (!common.isWindows) {  // Windows doesn't support {fd: <n>}
+  const handles = randomPipes(6);  // generate pipes in advance
+  // Test listen({handle: pipe}, cb)
+  net.createServer()
+    .listen({handle: handles[0]}, closePipeServer(handles[0]));
+  // Test listen({handle: pipe})
+  net.createServer()
+    .listen({handle: handles[1]})
+    .on('listening', closePipeServer(handles[1]));
+  // Test listen({_handle: pipe}, cb)
+  net.createServer()
+    .listen({_handle: handles[2]}, closePipeServer(handles[2]));
+  // Test listen({_handle: pipe})
+  net.createServer()
+    .listen({_handle: handles[3]})
+    .on('listening', closePipeServer(handles[3]));
+  // Test listen({fd: pipe.fd}, cb)
+  net.createServer()
+    .listen({fd: handles[4].fd}, closePipeServer(handles[4]));
+  // Test listen({fd: pipe.fd})
+  net.createServer()
+    .listen({fd: handles[5].fd})
+    .on('listening', closePipeServer(handles[5]));
+}
+
+if (!common.isWindows) {  // Windows doesn't support {fd: <n>}
+  // Test invalid fd
+  const fd = fs.openSync(__filename, 'r');
+  net.createServer()
+    .listen({fd: fd}, common.mustNotCall())
+    .on('error', common.mustCall(function(err) {
+      assert.strictEqual(err + '', 'Error: listen EINVAL');
+      this.close();
+    }));
+}

test/parallel/test-net-server-listen-options.js

@@ -22,6 +22,11 @@ function listenError(literals, ...values) {
   net.createServer().listen().on('listening', common.mustCall(close));
   // Test listen(cb)
   net.createServer().listen(common.mustCall(close));
+  // Test listen(port)
+  net.createServer().listen(0).on('listening', common.mustCall(close));
+  // Test listen({port})
+  net.createServer().listen({port: 0})
+    .on('listening', common.mustCall(close));
 }
 
 // Test listen(port, cb) and listen({port: port}, cb) combinations

test/parallel/test-net-server-listen-path.js

@@ -0,0 +1,49 @@
+'use strict';
+
+const common = require('../common');
+const net = require('net');
+
+common.refreshTmpDir();
+
+function closeServer() {
+  return common.mustCall(function() {
+    this.close();
+  });
+}
+
+let counter = 0;
+
+// Avoid conflict with listen-handle
+function randomPipePath() {
+  return common.PIPE + '-listen-path-' + (counter++);
+}
+
+// Test listen(path)
+{
+  const handlePath = randomPipePath();
+  net.createServer()
+    .listen(handlePath)
+    .on('listening', closeServer());
+}
+
+// Test listen({path})
+{
+  const handlePath = randomPipePath();
+  net.createServer()
+    .listen({path: handlePath})
+    .on('listening', closeServer());
+}
+
+// Test listen(path, cb)
+{
+  const handlePath = randomPipePath();
+  net.createServer()
+    .listen(handlePath, closeServer());
+}
+
+// Test listen(path, cb)
+{
+  const handlePath = randomPipePath();
+  net.createServer()
+    .listen({path: handlePath}, closeServer());
+}