test: add values to error message

In test-require-extensions-main, include the values that caused the test
to fail in the messages reporting the failure.

PR-URL: #16831
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>

test/parallel/test-require-extensions-main.js

@@ -3,11 +3,11 @@ require('../common');
 const assert = require('assert');
 const fixtures = require('../common/fixtures');
 
-const fixturesRequire =
-  require(fixtures.path('require-bin', 'bin', 'req.js'));
+const fixturesRequire = require(fixtures.path('require-bin', 'bin', 'req.js'));
 
 assert.strictEqual(
   fixturesRequire,
   '',
-  'test-require-extensions-main failed to import fixture requirements'
+  'test-require-extensions-main failed to import fixture requirements: ' +
+    fixturesRequire
 );