inspector, test: verify reported console message

Many Inspector protocol clients rely on the top frame reported for the
console messages. This test makes sure correct location is reported.

PR-URL: #25455
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

test/parallel/test-inspector-console-top-frame.js

@@ -0,0 +1,31 @@
+'use strict';
+
+// Verify that the line containing console.log is reported as a top stack frame
+// of the consoleAPICalled notification.
+// Changing this will break many Inspector protocol clients, including
+// debuggers that use that value for navigating from console messages to code.
+
+const common = require('../common');
+common.skipIfInspectorDisabled();
+
+const assert = require('assert');
+const { Session } = require('inspector');
+const { basename } = require('path');
+
+function logMessage() {
+  console.log('Log a message');
+}
+
+const session = new Session();
+let topFrame;
+session.once('Runtime.consoleAPICalled', (notification) => {
+  topFrame = (notification.params.stackTrace.callFrames[0]);
+});
+session.connect();
+session.post('Runtime.enable');
+
+logMessage();  // Triggers Inspector notification
+
+session.disconnect();
+assert.strictEqual(basename(topFrame.url), basename(__filename));
+assert.strictEqual(topFrame.lineNumber, 15);