test: add crypto.scrypt test case with different encoding

PR-URL: #23578
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

test/parallel/test-crypto-scrypt.js

@@ -189,6 +189,24 @@ for (const options of toobig) {
   }));
 }
 
+{
+  const defaultEncoding = crypto.DEFAULT_ENCODING;
+  const defaults = { N: 16384, p: 1, r: 8 };
+  const expected = crypto.scryptSync('pass', 'salt', 1, defaults);
+
+  const testEncoding = 'latin1';
+  crypto.DEFAULT_ENCODING = testEncoding;
+  const actual = crypto.scryptSync('pass', 'salt', 1);
+  assert.deepStrictEqual(actual, expected.toString(testEncoding));
+
+  crypto.scrypt('pass', 'salt', 1, common.mustCall((err, actual) => {
+    assert.ifError(err);
+    assert.deepStrictEqual(actual, expected.toString(testEncoding));
+  }));
+
+  crypto.DEFAULT_ENCODING = defaultEncoding;
+}
+
 for (const { args, expected } of badargs) {
   common.expectsError(() => crypto.scrypt(...args), expected);
   common.expectsError(() => crypto.scryptSync(...args), expected);