From 3f3de78c83ae919fd44531ac7ae9caed885800d4 Mon Sep 17 00:00:00 2001
From: Jelle Hulter <jellehulter@gmail.com>
Date: Wed, 23 Mar 2022 09:29:48 +0100
Subject: [PATCH] fix: corrected the Costa Rican IBAN format (#646)

---
 src/iban.ts               |  8 +++++--
 test/finance_iban.spec.ts | 44 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 50 insertions(+), 2 deletions(-)

diff --git a/src/iban.ts b/src/iban.ts
index 3f10e91be2e..b608357ee93 100644
--- a/src/iban.ts
+++ b/src/iban.ts
@@ -206,8 +206,12 @@ export = {
     },
     {
       country: 'CR',
-      total: 21,
+      total: 22,
       bban: [
+        {
+          type: 'n',
+          count: 1,
+        },
         {
           type: 'n',
           count: 3,
@@ -217,7 +221,7 @@ export = {
           count: 14,
         },
       ],
-      format: 'CRkk bbbc cccc cccc cccc c',
+      format: 'CRkk xbbb cccc cccc cccc cc',
     },
     {
       country: 'HR',
diff --git a/test/finance_iban.spec.ts b/test/finance_iban.spec.ts
index 23768387d85..5c3fb9c9b6b 100644
--- a/test/finance_iban.spec.ts
+++ b/test/finance_iban.spec.ts
@@ -255,6 +255,50 @@ describe('finance_iban', () => {
             'the result should be equal to 1'
           ).toBe(1);
         });
+
+        it('IBAN for Costa Rica is correct', () => {
+          // Costa Rica
+          // https://wise.com/us/iban/costa-rica
+          // Length 22
+          // BBAN 1n,3n,14n
+          // CRkk xbbb cccc cccc cccc cccc cccc
+          // x = reserve digit
+          // b = National bank code (digits)
+          // c = Account number (digits)
+
+          // example IBAN CR05 0152 0200 1026 2840 66
+
+          const iban = faker.finance.iban(false, 'CR');
+
+          expect(iban).satisfy(validator.isIBAN);
+
+          const ibanFormated = iban.match(/.{1,4}/g).join(' ');
+          const bban = iban.substring(4) + iban.substring(0, 4);
+
+          expect(
+            22,
+            `CR IBAN would be 22 chars length, given is ${iban.length}`
+          ).toBe(iban.length);
+
+          expect(
+            iban.substring(0, 2),
+            iban.substring(0, 2) +
+              "must start with 'CR' in CR IBAN " +
+              ibanFormated
+          ).to.eq('CR');
+
+          expect(
+            iban.substring(2, 22),
+            iban.substring(2, 22) +
+              ' must contains only digit in AZ IBAN ' +
+              ibanFormated
+          ).match(/^\d{20}$/);
+
+          expect(
+            ibanLib.mod97(ibanLib.toDigitString(bban)),
+            'the result should be equal to 1'
+          ).toBe(1);
+        });
       });
     }
   });