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>

Author: intercity-technology

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

@@ -3,11 +3,11 @@ require('../common');
 constassert=require('assert');
 constfixtures=require('../common/fixtures');
 
-constfixturesRequire=
-require(fixtures.path('require-bin','bin','req.js'));
+constfixturesRequire=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
 );