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_api.py

@@ -0,0 +1,61 @@
+import copy
+import json
+
+import pytest
+from django.utils.timezone import now
+
+from pretix.base.models import Event, Item, Organizer, Team, User
+from pretix.plugins.ticketoutputpdf.models import TicketLayoutItem
+
+
+@pytest.fixture
+def env():
+    o = Organizer.objects.create(name='Dummy', slug='dummy')
+    event = Event.objects.create(
+        organizer=o, name='Dummy', slug='dummy',
+        date_from=now(), plugins='pretix.plugins.banktransfer'
+    )
+    user = User.objects.create_user('dummy@dummy.dummy', 'dummy')
+    t = Team.objects.create(organizer=event.organizer)
+    t.members.add(user)
+    t.limit_events.add(event)
+    item1 = Item.objects.create(event=event, name="Ticket", default_price=23)
+    tl = event.ticket_layouts.create(name="Foo", default=True, layout='[{"a": 2}]')
+    TicketLayoutItem.objects.create(layout=tl, item=item1)
+    return event, user, tl, item1
+
+
+RES_LAYOUT = {
+    'id': 1,
+    'name': 'Foo',
+    'default': True,
+    'item_assignments': [{'item': 1}],
+    'layout': [{'a': 2}],
+    'background': None
+}
+
+
+@pytest.mark.django_db
+def test_api_list(env, client):
+    res = copy.copy(RES_LAYOUT)
+    res['id'] = env[2].pk
+    res['item_assignments'][0]['item'] = env[3].pk
+    client.login(email='dummy@dummy.dummy', password='dummy')
+    r = json.loads(
+        client.get('/api/v1/organizers/{}/events/{}/ticketlayouts/'.format(
+            env[0].slug, env[0].organizer.slug)).content.decode('utf-8')
+    )
+    assert r['results'] == [res]
+
+
+@pytest.mark.django_db
+def test_api_detail(env, client):
+    res = copy.copy(RES_LAYOUT)
+    res['id'] = env[2].pk
+    res['item_assignments'][0]['item'] = env[3].pk
+    client.login(email='dummy@dummy.dummy', password='dummy')
+    r = json.loads(
+        client.get('/api/v1/organizers/{}/events/{}/ticketlayouts/{}/'.format(
+            env[0].slug, env[0].organizer.slug, env[2].pk)).content.decode('utf-8')
+    )
+    assert r == res