add test cases

note: bezahlcode encoding changed slightly due to actually url-encoding all parameters (comma is now encoded as %2C). i tested with ING app, it accepts both.

before: 'bank://singlepaymentsepa?name=Verein%20f%C3%BCr%20Testzwecke%20e.V.&iban=DE37796500000069799047&bic=BYLADEM1MIL&amount=123,00&reason=TESTVERANST-12345&currency=EUR'

after: 'bank://singlepaymentsepa?name=Verein%20f%C3%BCr%20Testzwecke%20e.V.&iban=DE37796500000069799047&bic=BYLADEM1MIL&amount=123%2C00&reason=TESTVERANST-12345&currency=EUR'

src/pretix/helpers/payment.py

@@ -1,5 +1,5 @@
 import text_unidecode
-from django.utils.http import urlencode
+from urllib.parse import urlencode, quote
 from django.utils.safestring import mark_safe
 from django.utils.translation import gettext_lazy as _
 
@@ -85,13 +85,13 @@ def euro_bezahlcode(
         return
 
     qr_data = f"bank://singlepaymentsepa?" + urlencode({
-        "name": bank_details_sepa_name,
-        "iban":bank_details_sepa_iban,
-        "bic": bank_details_sepa_bic,
+        "name": str(bank_details_sepa_name),
+        "iban": str(bank_details_sepa_iban),
+        "bic": str(bank_details_sepa_bic),
         "amount": commadecimal(amount),
-        "reason": code,
-        "currency": event.currency,
-    })
+        "reason": str(code),
+        "currency": str(event.currency),
+    }, quote_via=quote)
     return {
         "id": "bezahlcode",
         "label": "BezahlCode",

src/tests/helpers/test_payment.py

@@ -0,0 +1,102 @@
+from datetime import timedelta
+from decimal import Decimal
+
+import pytest
+from django.utils.timezone import now
+
+from pretix.base.models import Organizer, Event
+from pretix.helpers.payment import generate_payment_qr_codes
+
+
+@pytest.fixture
+def env():
+    o = Organizer.objects.create(name='Verein für Testzwecke e.V.', slug='testverein')
+    event = Event.objects.create(
+        organizer=o, name='Testveranstaltung', slug='testveranst',
+        date_from=now() + timedelta(days=10),
+        live=True, is_public=False, currency='EUR',
+    )
+    event.settings.invoice_address_from = 'Verein für Testzwecke e.V.'
+    event.settings.invoice_address_from_zipcode = '1234'
+    event.settings.invoice_address_from_city = 'Testhausen'
+    event.settings.invoice_address_from_country = 'CH'
+
+    return o, event
+
+
+@pytest.mark.django_db
+def test_payment_qr_codes_euro(env):
+    o, event = env
+    codes = generate_payment_qr_codes(
+        event=event,
+        code='TESTVERANST-12345',
+        amount=Decimal('123.00'),
+        bank_details_sepa_bic='BYLADEM1MIL',
+        bank_details_sepa_iban='DE37796500000069799047',
+        bank_details_sepa_name='Verein für Testzwecke e.V.',
+    )
+    assert len(codes) == 2
+    assert codes[0]['label'] == 'EPC-QR'
+    assert codes[0]['qr_data'] == '''BCD
+002
+2
+SCT
+BYLADEM1MIL
+Verein fur Testzwecke e.V.
+DE37796500000069799047
+EUR123.00
+
+
+TESTVERANST-12345
+
+'''
+
+    assert codes[1]['label'] == 'BezahlCode'
+    assert codes[1]['qr_data'] == 'bank://singlepaymentsepa?name=Verein%20f%C3%BCr%20Testzwecke%20e.V.&iban=DE37796500000069799047&bic=BYLADEM1MIL&amount=123%2C00&reason=TESTVERANST-12345&currency=EUR'
+
+
+@pytest.mark.django_db
+def test_payment_qr_codes_swiss(env):
+    o, event = env
+    codes = generate_payment_qr_codes(
+        event=event,
+        code='TESTVERANST-12345',
+        amount=Decimal('123.00'),
+        bank_details_sepa_bic='TESTCHXXXXX',
+        bank_details_sepa_iban='CH6389144757654882127',
+        bank_details_sepa_name='Verein für Testzwecke e.V.',
+    )
+    assert codes[0]['label'] == 'QR-bill'
+    assert codes[0]['qr_data'] == "\r\n".join([
+        "SPC",
+        "0200",
+        "1",
+        "CH6389144757654882127",
+        "K",
+        "Verein fur Testzwecke e.V.",
+        "Verein fur Testzwecke e.V.",
+        "1234 Testhausen",
+        "",
+        "",
+        "CH",
+        "",
+        "",
+        "",
+        "",
+        "",
+        "",
+        "",
+        "123.00",
+        "EUR",
+        "",
+        "",
+        "",
+        "",
+        "",
+        "",
+        "",
+        "NON",
+        "",
+        "TESTVERANST-12345",
+        "EPD",
+    ])