test: check writeReport when error with one line stack

PR-URL: #28433
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

test/report/test-report-writereport.js

@@ -37,6 +37,14 @@ function validate() {
   validate();
 }
 
+{
+  // Test with an error with one line stack
+  const error = new Error();
+  error.stack = 'only one line';
+  process.report.writeReport(error);
+  validate();
+}
+
 {
   // Test with a file argument.
   const file = process.report.writeReport('custom-name-1.json');