Fix validation for Swedish IBANs in clearing code 3300

Account for the fact that, for this clearing number, the account number may start with a 0 (specifically for account holders born in the 2000s).

.gitignore

@@ -2,3 +2,4 @@ Gemfile.lock
 .bundle
 *.gem
 .DS_Store
+.idea

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 1.23.0 - February 14, 2025
+
+- Fix validation for SE IBANs for clearing code 3300 where the account number starts with a 0
+
 ## 1.22.0 - January 22, 2025
 
 - Remove support for Ruby < 3.1, add support for Ruby >= 3.4

data/raw/swedish_bank_lookup.yml

@@ -79,10 +79,11 @@
   :bank: Nordea Personkonto
   # NOTE: We're routing Nordea Personkonto to the main Nordea bank code, but
   # it may belong at one of the other Nordea codes we're not currently using.
+  # Account numbers for this clearing number are the same as personal ID numbers.
   :bank_code: 300
   :clearing_code_length: 4
   :serial_number_length: 10
-  :zerofill_serial_number: false
+  :zerofill_serial_number: true
   :include_clearing_code: false
   :validation_scheme: '2.1'
 - :range: [3301, 3399]
@@ -117,7 +118,7 @@
   :clearing_code_length: 4
   :serial_number_length: 10
   :zerofill_serial_number: false
-  :include_clearing_code: fase
+  :include_clearing_code: false
   :validation_scheme: '2.1'
 - :range: [3783, 3999]
   :bank: Nordea

lib/ibandit/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Ibandit
-  VERSION = "1.22.0"
+  VERSION = "1.23.0"
 end

spec/ibandit/iban_spec.rb

@@ -200,6 +200,90 @@
       its(:to_s) { is_expected.to eq("SE5412000000012810105723") }
     end
 
+    context "when the IBAN was created from a Swedish IBAN" do
+      context "where the clearing code is part of the account number" do
+        let(:arg) { "SE4730000000031231234567" }
+
+        its(:country_code) { is_expected.to eq("SE") }
+        its(:bank_code) { is_expected.to be_nil }
+        its(:branch_code) { is_expected.to be_nil }
+        its(:account_number) { is_expected.to be_nil }
+        its(:swift_bank_code) { is_expected.to eq("300") }
+        its(:swift_branch_code) { is_expected.to be_nil }
+        its(:swift_account_number) { is_expected.to eq("00000031231234567") }
+        its(:iban) { is_expected.to eq("SE4730000000031231234567") }
+        its(:pseudo_iban) { is_expected.to be_nil }
+        its(:to_s) { is_expected.to eq("SE4730000000031231234567") }
+        its(:valid?) { is_expected.to eq(true) }
+      end
+
+      context "where the clearing code is not part of the account number" do
+        let(:arg) { "SE7160000000000123456789" }
+
+        its(:country_code) { is_expected.to eq("SE") }
+        its(:bank_code) { is_expected.to be_nil }
+        its(:branch_code) { is_expected.to be_nil }
+        its(:account_number) { is_expected.to be_nil }
+        its(:swift_bank_code) { is_expected.to eq("600") }
+        its(:swift_branch_code) { is_expected.to be_nil }
+        its(:swift_account_number) { is_expected.to eq("00000000123456789") }
+        its(:iban) { is_expected.to eq("SE7160000000000123456789") }
+        its(:pseudo_iban) { is_expected.to be_nil }
+        its(:to_s) { is_expected.to eq("SE7160000000000123456789") }
+        its(:valid?) { is_expected.to eq(true) }
+      end
+
+      context "where the clearing code is 3300, and therefore the account number is the national ID" do
+        context "where the person was born in the 1990s" do
+          let(:arg) { "SE2130000000009308127392" }
+
+          its(:country_code) { is_expected.to eq("SE") }
+          its(:bank_code) { is_expected.to be_nil }
+          its(:branch_code) { is_expected.to be_nil }
+          its(:account_number) { is_expected.to be_nil }
+          its(:swift_bank_code) { is_expected.to eq("300") }
+          its(:swift_branch_code) { is_expected.to be_nil }
+          its(:swift_account_number) { is_expected.to eq("00000009308127392") }
+          its(:iban) { is_expected.to eq("SE2130000000009308127392") }
+          its(:pseudo_iban) { is_expected.to be_nil }
+          its(:to_s) { is_expected.to eq("SE2130000000009308127392") }
+          its(:valid?) { is_expected.to eq(true) }
+        end
+
+        context "where the person was born in the 2000s" do
+          let(:arg) { "SE9430000000000607274287" }
+
+          its(:country_code) { is_expected.to eq("SE") }
+          its(:bank_code) { is_expected.to be_nil }
+          its(:branch_code) { is_expected.to be_nil }
+          its(:account_number) { is_expected.to be_nil }
+          its(:swift_bank_code) { is_expected.to eq("300") }
+          its(:swift_branch_code) { is_expected.to be_nil }
+          its(:swift_account_number) { is_expected.to eq("00000000607274287") }
+          its(:iban) { is_expected.to eq("SE9430000000000607274287") }
+          its(:pseudo_iban) { is_expected.to be_nil }
+          its(:to_s) { is_expected.to eq("SE9430000000000607274287") }
+          its(:valid?) { is_expected.to eq(true) }
+        end
+
+        context "where the person was born in the year 2000" do
+          let(:arg) { "SE3830000000000007134937" }
+
+          its(:country_code) { is_expected.to eq("SE") }
+          its(:bank_code) { is_expected.to be_nil }
+          its(:branch_code) { is_expected.to be_nil }
+          its(:account_number) { is_expected.to be_nil }
+          its(:swift_bank_code) { is_expected.to eq("300") }
+          its(:swift_branch_code) { is_expected.to be_nil }
+          its(:swift_account_number) { is_expected.to eq("00000000007134937") }
+          its(:iban) { is_expected.to eq("SE3830000000000007134937") }
+          its(:pseudo_iban) { is_expected.to be_nil }
+          its(:to_s) { is_expected.to eq("SE3830000000000007134937") }
+          its(:valid?) { is_expected.to eq(true) }
+        end
+      end
+    end
+
     context "when the IBAN was created with local details for Australia" do
       let(:arg) do
         {