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import unittest
from django.db import connection
from django.db.models.expressions import RawSQL
from django.test import TestCase
from ..models import Square
@unittest.skipUnless(connection.vendor == "postgresql", "PostgreSQL tests")
class BulkCreateUnnestTests(TestCase):
def test_single_object(self):
with self.assertNumQueries(1) as ctx:
Square.objects.bulk_create([Square(root=2, square=4)])
self.assertNotIn("UNNEST", ctx[0]["sql"])
def test_non_literal(self):
with self.assertNumQueries(1) as ctx:
Square.objects.bulk_create(
[Square(root=2, square=RawSQL("%s", (4,))), Square(root=3, square=9)]
)
self.assertNotIn("UNNEST", ctx[0]["sql"])
def test_unnest_eligible(self):
with self.assertNumQueries(1) as ctx:
Square.objects.bulk_create(
[Square(root=2, square=4), Square(root=3, square=9)]
)
self.assertIn("UNNEST", ctx[0]["sql"])
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