test: use fixtures.path instead of fixturesDir

Updated parallel/test-require-resolve.js to use the fixtures module.

PR-URL: nodejs/node#15984
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>

test/parallel/test-require-resolve.js

@@ -20,20 +20,19 @@
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 'use strict';
-const common = require('../common');
-const fixturesDir = common.fixturesDir;
+require('../common');
+const fixtures = require('../common/fixtures');
 const assert = require('assert');
-const path = require('path');
 
 assert.strictEqual(
-  path.join(__dirname, '../fixtures/a.js').toLowerCase(),
-  require.resolve('../fixtures/a').toLowerCase());
+  fixtures.path('a.js').toLowerCase(),
+  require.resolve(fixtures.path('a').toLowerCase()));
 assert.strictEqual(
-  path.join(fixturesDir, 'a.js').toLowerCase(),
-  require.resolve(path.join(fixturesDir, 'a')).toLowerCase());
+  fixtures.path('a.js').toLowerCase(),
+  require.resolve(fixtures.path('a')).toLowerCase());
 assert.strictEqual(
-  path.join(fixturesDir, 'nested-index', 'one', 'index.js').toLowerCase(),
-  require.resolve('../fixtures/nested-index/one').toLowerCase());
+  fixtures.path('nested-index', 'one', 'index.js').toLowerCase(),
+  require.resolve(fixtures.path('nested-index', 'one').toLowerCase()));
 assert.strictEqual('path', require.resolve('path'));
 
 console.log('ok');