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Fixed #31183 -- Added a feature flag for "<db> only supports UNBOUNDED together with PRECEDING and FOLLOWING".

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This commit is contained in:
Tim Graham
2020-01-19 18:30:54 -05:00
committed by Mariusz Felisiak
parent 2a2ea4ee18
commit 227d0c7365
5 changed files with 19 additions and 18 deletions
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14
tests/expressions_window/tests.py
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@@ -1,5 +1,5 @@
import datetime
from unittest import mock, skipIf, skipUnless
from unittest import mock, skipIf
from django.core.exceptions import FieldError
from django.db import NotSupportedError, connection
@@ -750,9 +750,9 @@ class WindowFunctionTests(TestCase):
frame=RowRange(end='a'),
)))
@skipUnless(connection.vendor == 'postgresql', 'Frame construction not allowed on PostgreSQL')
def test_postgresql_illegal_range_frame_start(self):
msg = 'PostgreSQL only supports UNBOUNDED together with PRECEDING and FOLLOWING.'
@skipUnlessDBFeature('only_supports_unbounded_with_preceding_and_following')
def test_unsupported_range_frame_start(self):
msg = '%s only supports UNBOUNDED together with PRECEDING and FOLLOWING.' % connection.display_name
with self.assertRaisesMessage(NotSupportedError, msg):
list(Employee.objects.annotate(test=Window(
expression=Sum('salary'),
@@ -760,9 +760,9 @@ class WindowFunctionTests(TestCase):
frame=ValueRange(start=-1),
)))
@skipUnless(connection.vendor == 'postgresql', 'Frame construction not allowed on PostgreSQL')
def test_postgresql_illegal_range_frame_end(self):
msg = 'PostgreSQL only supports UNBOUNDED together with PRECEDING and FOLLOWING.'
@skipUnlessDBFeature('only_supports_unbounded_with_preceding_and_following')
def test_unsupported_range_frame_end(self):
msg = '%s only supports UNBOUNDED together with PRECEDING and FOLLOWING.' % connection.display_name
with self.assertRaisesMessage(NotSupportedError, msg):
list(Employee.objects.annotate(test=Window(
expression=Sum('salary'),