From a646425aaf8e4441cce516c1da313e647e911640 Mon Sep 17 00:00:00 2001
From: Mael Arnaud <mael.arnaud@gmail.com>
Date: Fri, 19 Jul 2024 10:28:50 +0200
Subject: [PATCH] feat: add whitespace filtering to iban validator

- add a new function to filter whitespace to IBAN validator
---
 src/validators/iban.py | 13 +++++++++++--
 tests/test_iban.py     | 10 +++++++++-
 2 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/src/validators/iban.py b/src/validators/iban.py
index 2b1a4d4d..726aa7a4 100644
--- a/src/validators/iban.py
+++ b/src/validators/iban.py
@@ -12,6 +12,11 @@ def _char_value(char: str):
     return char if char.isdigit() else str(10 + ord(char) - ord("A"))
 
 
+def _filter_whitespace(value: str):
+    """Remove all kind of unicode whitespace from the string."""
+    return "".join(filter(lambda x: not x.isspace(), value))
+
+
 def _mod_check(value: str):
     """Check if the value string passes the mod97-test."""
     # move country code and check numbers to end
@@ -37,8 +42,12 @@ def iban(value: str, /):
         (Literal[True]): If `value` is a valid IBAN code.
         (ValidationError): If `value` is an invalid IBAN code.
     """
+    filtered_value = _filter_whitespace(value)
     return (
-        (re.match(r"^[a-z]{2}[0-9]{2}[a-z0-9]{11,30}$", value, re.IGNORECASE) and _mod_check(value))
-        if value
+        (
+            re.match(r"^[a-z]{2}[0-9]{2}[a-z0-9]{11,30}$", filtered_value, re.IGNORECASE)
+            and _mod_check(filtered_value)
+        )
+        if filtered_value
         else False
     )
diff --git a/tests/test_iban.py b/tests/test_iban.py
index e3b0798f..3e9688aa 100644
--- a/tests/test_iban.py
+++ b/tests/test_iban.py
@@ -7,7 +7,15 @@
 from validators import ValidationError, iban
 
 
-@pytest.mark.parametrize("value", ["GB82WEST12345698765432", "NO9386011117947"])
+@pytest.mark.parametrize(
+    "value",
+    [
+        "GB82WEST12345698765432",
+        "NO9386011117947",
+        "GB 82WE ST12 3456 9876 5432",
+        "NO 9386 0111 1794 7",
+    ],
+)
 def test_returns_true_on_valid_iban(value: str):
     """Test returns true on valid iban."""
     assert iban(value)