Helper and docs for offlinesales API (#5302)

src/tests/__init__.py

@@ -19,37 +19,3 @@
 # You should have received a copy of the GNU Affero General Public License along with this program.  If not, see
 # <https://www.gnu.org/licenses/>.
 #
-from django.db import DEFAULT_DB_ALIAS, connections
-from django.test.utils import CaptureQueriesContext
-
-
-class _AssertNumQueriesContext(CaptureQueriesContext):
-    # Inspired by /django/test/testcases.py
-    # but copied over to work without the unit test module
-    def __init__(self, num, connection):
-        self.num = num
-        super(_AssertNumQueriesContext, self).__init__(connection)
-
-    def __exit__(self, exc_type, exc_value, traceback):
-        super(_AssertNumQueriesContext, self).__exit__(exc_type, exc_value, traceback)
-        if exc_type is not None:
-            return
-        executed = len(self)
-        assert executed == self.num, "%d queries executed, %d expected\nCaptured queries were:\n%s" % (
-            executed, self.num,
-            '\n'.join(
-                query['sql'] for query in self.captured_queries
-            )
-        )
-
-
-def assert_num_queries(num, func=None, *args, **kwargs):
-    using = kwargs.pop("using", DEFAULT_DB_ALIAS)
-    conn = connections[using]
-
-    context = _AssertNumQueriesContext(num, conn)
-    if func is None:
-        return context
-
-    with context:
-        func(*args, **kwargs)

src/tests/api/test_events.py

@@ -43,13 +43,13 @@ from django.core.files.base import ContentFile
 from django.utils.timezone import now
 from django_countries.fields import Country
 from django_scopes import scope, scopes_disabled
-from tests import assert_num_queries
 from tests.const import SAMPLE_PNG
 
 from pretix.base.models import (
     Event, InvoiceAddress, Order, OrderPosition, Organizer, SeatingPlan,
 )
 from pretix.base.models.orders import OrderFee
+from pretix.testutils.queries import assert_num_queries
 
 
 @pytest.fixture

src/tests/base/test_cross_selling.py

@@ -28,10 +28,10 @@ import pytest
 from django.utils.timezone import now
 from django_scopes import scopes_disabled
 from freezegun import freeze_time
-from tests import assert_num_queries
 
 from pretix.base.models import CartPosition, Discount, Event, Organizer
 from pretix.base.services.cross_selling import CrossSellingService
+from pretix.testutils.queries import assert_num_queries
 
 
 @pytest.fixture

src/tests/multidomain/test_urlreverse.py

@@ -23,11 +23,11 @@ import pytest
 from django.test import override_settings
 from django.utils.timezone import now
 from django_scopes import scopes_disabled
-from tests import assert_num_queries
 
 from pretix.base.models import Event, Organizer
 from pretix.multidomain.models import KnownDomain
 from pretix.multidomain.urlreverse import build_absolute_uri, eventreverse
+from pretix.testutils.queries import assert_num_queries
 
 
 @pytest.fixture