PYTHON-3469 Error if RewrapManyDataKey is called with masterKey and without provider (#1214)

Author: blink1073

pymongo/encryption.py

@@ -1033,6 +1033,8 @@ def rewrap_many_data_key(
 
         .. versionadded:: 4.2
         """
+        if master_key is not None and provider is None:
+            raise ConfigurationError("A provider must be given if a master_key is given")
         self._check_closed()
         with _wrap_encryption_errors():
             raw_result = self._encryption.rewrap_many_data_key(filter, provider, master_key)

test/test_encryption.py

@@ -2387,6 +2387,12 @@ def run_test(self, src_provider, dst_provider):
         decrypt_result2 = client_encryption2.decrypt(cipher_text)
         self.assertEqual(decrypt_result2, "test")
 
+        # 8. Case 2. Provider is not optional when master_key is given.
+        with self.assertRaises(ConfigurationError):
+            rewrap_many_data_key_result = client_encryption2.rewrap_many_data_key(
+                {}, master_key=self.MASTER_KEYS[dst_provider]
+            )
+
 
 # https://github.com/mongodb/specifications/blob/5cf3ed/source/client-side-encryption/tests/README.rst#on-demand-aws-credentials
 class TestOnDemandAWSCredentials(EncryptionIntegrationTest):