updated tests with error check

Author: vitpavlenko

test/parallel/test-crypto-encoding-validation-error.js

@@ -17,7 +17,7 @@ const createCipher = () => {
 
   assert.throws(
     () => cipher.update('test', 'bad1', 'hex'),
-    { message: /^Unknown encoding bad1$/ }
+    { message: /^Unknown encoding bad1$/, code: 'ERR_CRYPTO_UNKNOWN_ENCODING' }
   );
 }
 
@@ -27,7 +27,7 @@ const createCipher = () => {
 
   assert.throws(
     () => cipher.final('bad2'),
-    { message: /^Unknown encoding bad2$/ }
+    { message: /^Unknown encoding bad2$/, code: 'ERR_CRYPTO_UNKNOWN_ENCODING' }
   );
 }
 
@@ -36,6 +36,6 @@ const createCipher = () => {
 
   assert.throws(
     () => cipher.update('test', 'utf-8', 'bad3'),
-    { message: /^Unknown encoding bad3$/ }
+    { message: /^Unknown encoding bad3$/, code: 'ERR_CRYPTO_UNKNOWN_ENCODING' }
   );
 }