test: fix test-debugger-pid

The current format that prints the process PID before the actual
message.

Adapt the test so it also passes on Windows, that emits a different
message from the rest of platforms.

Move the test to parallel.

PR-URL: #6584
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Rich Trott <rtrott@gmail.com>

test/parallel/test-debugger-pid.js

@@ -0,0 +1,54 @@
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const spawn = require('child_process').spawn;
+
+var buffer = '';
+
+// connect to debug agent
+var interfacer = spawn(process.execPath, ['debug', '-p', '655555']);
+
+console.error(process.execPath, 'debug', '-p', '655555');
+interfacer.stdout.setEncoding('utf-8');
+interfacer.stderr.setEncoding('utf-8');
+var onData = function(data) {
+  data = (buffer + data).split('\n');
+  buffer = data.pop();
+  data.forEach(function(line) {
+    interfacer.emit('line', line);
+  });
+};
+interfacer.stdout.on('data', onData);
+interfacer.stderr.on('data', onData);
+
+var lineCount = 0;
+interfacer.on('line', function(line) {
+  var expected;
+  const pid = interfacer.pid;
+  if (common.isWindows) {
+    switch (++lineCount) {
+      case 1:
+        line = line.replace(/^(debug> *)+/, '');
+        var msg = 'There was an internal error in Node\'s debugger. ' +
+                  'Please report this bug.';
+        expected = `(node:${pid}) ${msg}`;
+        break;
+
+      case 2:
+        expected = 'The parameter is incorrect.';
+        break;
+
+      default:
+        return;
+    }
+  } else {
+    line = line.replace(/^(debug> *)+/, '');
+    expected = `(node:${pid}) Target process: 655555 doesn\'t exist.`;
+  }
+
+  assert.strictEqual(expected, line);
+});
+
+interfacer.on('exit', function(code, signal) {
+  assert.ok(code == 1, 'Got unexpected code: ' + code);
+});