Handling SEPA Direct Payment

2026-10-04 16:47:15 +02:00
parent 9e9ea0cfd5
commit d511dbdd66
25 changed files with 801 additions and 43 deletions
@@ -0,0 +1,45 @@
+<?php
+
+namespace Tests\Unit;
+
+use App\Support\CreditorId;
+use PHPUnit\Framework\TestCase;
+
+class CreditorIdTest extends TestCase
+{
+    public function test_normalizes_spaces_and_case(): void
+    {
+        $this->assertSame('DE98ZZZ09999999999', CreditorId::normalize(' de98 zzz 0999 9999 999 '));
+    }
+
+    public function test_accepts_the_bundesbank_test_id(): void
+    {
+        $this->assertTrue(CreditorId::isValid('DE98ZZZ09999999999'));
+        $this->assertTrue(CreditorId::isValid('de98 zzz 09999999999'));
+    }
+
+    public function test_business_code_does_not_affect_the_check_digit(): void
+    {
+        // Die Geschäftsbereichskennung (Stellen 5-7) wählt der Gläubiger selbst -- die Prüfziffer bleibt.
+        $this->assertTrue(CreditorId::isValid('DE98ABC09999999999'));
+    }
+
+    public function test_rejects_a_wrong_check_digit(): void
+    {
+        $this->assertFalse(CreditorId::isValid('DE97ZZZ09999999999'));
+        $this->assertFalse(CreditorId::isValid('DE98ZZZ09999999998'));
+    }
+
+    public function test_rejects_a_wrong_german_length(): void
+    {
+        $this->assertFalse(CreditorId::isValid('DE98ZZZ0999999999'));
+        $this->assertFalse(CreditorId::isValid('DE98ZZZ099999999990'));
+    }
+
+    public function test_rejects_malformed_input(): void
+    {
+        $this->assertFalse(CreditorId::isValid(''));
+        $this->assertFalse(CreditorId::isValid('DE02120300000000202051')); // eine IBAN
+        $this->assertFalse(CreditorId::isValid('DEXXZZZ09999999999'));
+    }
+}