Revize da0fc952

Added a global error handler for CryptographyException errors.
Added a dependency ony pytest-mock library in order to be able to mock method calls in tests.
Covered the added global CryptographyException error handler in a test.

src/controllers/certificates_controller.py

@@ -65 +65 @@
 E_INVALID_EXTENSIONS = {"success": False, "data": "Error occurred while creating a certificate. "
                                                   "It may be caused by wrong format of extensions."}
 
+E_UNHANDLED_CRYPTOGRAPHY_ERROR = {"success": False, "data": "An unknown error has happened in the cryptography library."}
+
 
 class CertController:
     USAGE_KEY_MAP = {'CA': CA_ID, 'SSL': SSL_ID, 'digitalSignature': SIGNATURE_ID, 'authentication': AUTHENTICATION_ID}
@@ -768 +770 @@
                                                                                           identity_name,
                                                                                           identity_password)
                     return Response(identity_byte_array, mimetype='application/x-pkcs12')
+
+    @staticmethod
+    def handle_cryptography_error(e):
+        Logger.error(f"An unhandled CryptographyException has been raised: {str(e)}")
+        return E_UNHANDLED_CRYPTOGRAPHY_ERROR, C_INTERNAL_SERVER_ERROR