inspector: added --inspect-publish-uid

This flag specifies how inspector websocket url should be reported.
Tthre options are supported:
- stderr - reports websocket as a message to stderr,
- http - exposes /json/list endpoint that contains inspector websocket
  url,
- binding - require('inspector').url().

Related discussion: https://github.com/nodejs/diagnostics/issues/303

PR-URL: https://github.com/nodejs/node/pull/27741
Reviewed-By: Eugene Ostroukhov <eostroukhov@google.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>

1 files changed, 42 insertions, 0 deletions

diff --git a/test/parallel/test-inspect-publish-uid.js b/test/parallel/test-inspect-publish-uid.js
new file mode 100644
index 0000000000..58d651e97d
--- /dev/null
+++ b/test/parallel/test-inspect-publish-uid.js
@@ -0,0 +1,42 @@
+'use strict';
+const common = require('../common');
+
+common.skipIfInspectorDisabled();
+
+const assert = require('assert');
+const { spawnSync } = require('child_process');
+
+(async function test() {
+  await testArg('stderr');
+  await testArg('http');
+  await testArg('http,stderr');
+})();
+
+async function testArg(argValue) {
+  console.log('Checks ' + argValue + '..');
+  const hasHttp = argValue.split(',').includes('http');
+  const hasStderr = argValue.split(',').includes('stderr');
+
+  const nodeProcess = spawnSync(process.execPath, [
+    '--inspect=0',
+    `--inspect-publish-uid=${argValue}`,
+    '-e', `(${scriptMain.toString()})(${hasHttp ? 200 : 404})`
+  ]);
+  const hasWebSocketInStderr = checkStdError(
+    nodeProcess.stderr.toString('utf8'));
+  assert.strictEqual(hasWebSocketInStderr, hasStderr);
+
+  function checkStdError(data) {
+    const matches = data.toString('utf8').match(/ws:\/\/.+:(\d+)\/.+/);
+    return !!matches;
+  }
+
+  function scriptMain(code) {
+    const url = require('inspector').url();
+    const { host } = require('url').parse(url);
+    require('http').get('http://' + host + '/json/list', (response) => {
+      assert.strictEqual(response.statusCode, code);
+      response.destroy();
+    });
+  }
+}