Fix #549 -- Multiple PDF ticket layouts (#938)

- [x] Data model
- [x] CRUD
- [x] Editor
- [x] Migration from old settings
- [x] Clone files when copying events
  - [x] badges?
- [x] Actual ticket output
- [x] Default layout on event creation
- [x] Link well from ticketing settings
- [x] Tests
- [x] Shipping plugin
  - [x] Migration
  - [x] Settings
  - [x] Create default
- [x] API

src/tests/plugins/ticketoutputpdf/test_ticketoutputpdf.py

@@ -0,0 +1,51 @@
+from datetime import timedelta
+from decimal import Decimal
+from io import BytesIO
+
+import pytest
+from django.utils.timezone import now
+from PyPDF2 import PdfFileReader
+
+from pretix.base.models import (
+    Event, Item, ItemVariation, Order, OrderPosition, Organizer,
+)
+from pretix.plugins.ticketoutputpdf.ticketoutput import PdfTicketOutput
+
+
+@pytest.fixture
+def env0():
+    o = Organizer.objects.create(name='Dummy', slug='dummy')
+    event = Event.objects.create(
+        organizer=o, name='Dummy', slug='dummy',
+        date_from=now(), live=True
+    )
+    o1 = Order.objects.create(
+        code='FOOBAR', event=event, email='dummy@dummy.test',
+        status=Order.STATUS_PENDING,
+        datetime=now(), expires=now() + timedelta(days=10),
+        total=Decimal('13.37'), payment_provider='banktransfer'
+    )
+    shirt = Item.objects.create(event=event, name='T-Shirt', default_price=12)
+    shirt_red = ItemVariation.objects.create(item=shirt, default_price=14, value="Red")
+    OrderPosition.objects.create(
+        order=o1, item=shirt, variation=shirt_red,
+        price=12, attendee_name=None, secret='1234'
+    )
+    OrderPosition.objects.create(
+        order=o1, item=shirt, variation=shirt_red,
+        price=12, attendee_name=None, secret='5678'
+    )
+    return event, o1
+
+
+@pytest.mark.django_db
+def test_generate_pdf(env0):
+    event, order = env0
+    event.settings.set('ticketoutput_pdf_code_x', 30)
+    event.settings.set('ticketoutput_pdf_code_y', 50)
+    event.settings.set('ticketoutput_pdf_code_s', 2)
+    o = PdfTicketOutput(event)
+    fname, ftype, buf = o.generate(order.positions.first())
+    assert ftype == 'application/pdf'
+    pdf = PdfFileReader(BytesIO(buf))
+    assert pdf.numPages == 1