Length checks added, validations added

lib/iban_ex/error.ex

@@ -7,6 +7,8 @@ defmodule IbanEx.Error do
           | :invalid_length
           | :invalid_checksum
           | :can_not_parse_map
+          | :length_to_long
+          | :length_to_short
           | atom()
   @type errors() :: [error()]
   @errors [
@@ -14,15 +16,19 @@ defmodule IbanEx.Error do
     :invalid_format,
     :invalid_length,
     :invalid_checksum,
-    :can_not_parse_map
-  ]
+    :can_not_parse_map,
+    :length_to_long,
+    :length_to_short
+]
 
   @messages [
     unsupported_country_code: "Unsupported country code",
     invalid_format: "IBAN violates required format",
     invalid_length: "IBAN violates the required length",
     invalid_checksum: "IBAN's checksum is invalid",
-    can_not_parse_map: "Can't parse map to IBAN struct"
+    can_not_parse_map: "Can't parse map to IBAN struct",
+    length_to_long: "IBAN longer then required length",
+    length_to_short: "IBAN shorter then required length"
   ]
 
   @spec message(error()) :: String.t()