mirror of
https://github.com/django/django.git
synced 2025-03-12 18:30:48 +00:00
a469397dd3
Co-authored-by: Simon Charette <charette.s@gmail.com> Backport of 5a2c1bc07d126ce32efaa157e712a8f3a7457b74 from main.
111 lines
3.9 KiB
Python
111 lines
3.9 KiB
Python
import unittest
|
|
|
|
from django.core.management.color import no_style
|
|
from django.db import connection, models
|
|
from django.test import TestCase
|
|
|
|
from ..models import Person, Tag
|
|
|
|
|
|
@unittest.skipUnless(connection.vendor == "sqlite", "SQLite tests.")
|
|
class SQLiteOperationsTests(TestCase):
|
|
def test_sql_flush(self):
|
|
self.assertEqual(
|
|
connection.ops.sql_flush(
|
|
no_style(),
|
|
[Person._meta.db_table, Tag._meta.db_table],
|
|
),
|
|
[
|
|
'DELETE FROM "backends_person";',
|
|
'DELETE FROM "backends_tag";',
|
|
],
|
|
)
|
|
|
|
def test_sql_flush_allow_cascade(self):
|
|
statements = connection.ops.sql_flush(
|
|
no_style(),
|
|
[Person._meta.db_table, Tag._meta.db_table],
|
|
allow_cascade=True,
|
|
)
|
|
self.assertEqual(
|
|
# The tables are processed in an unordered set.
|
|
sorted(statements),
|
|
[
|
|
'DELETE FROM "backends_person";',
|
|
'DELETE FROM "backends_tag";',
|
|
'DELETE FROM "backends_verylongmodelnamezzzzzzzzzzzzzzzzzzzzzz'
|
|
"zzzzzzzzzzzzzzzzzzzz_m2m_also_quite_long_zzzzzzzzzzzzzzzzzzzz"
|
|
'zzzzzzzzzzzzzzzzzzzzzzz";',
|
|
],
|
|
)
|
|
|
|
def test_sql_flush_sequences(self):
|
|
self.assertEqual(
|
|
connection.ops.sql_flush(
|
|
no_style(),
|
|
[Person._meta.db_table, Tag._meta.db_table],
|
|
reset_sequences=True,
|
|
),
|
|
[
|
|
'DELETE FROM "backends_person";',
|
|
'DELETE FROM "backends_tag";',
|
|
'UPDATE "sqlite_sequence" SET "seq" = 0 WHERE "name" IN '
|
|
"('backends_person', 'backends_tag');",
|
|
],
|
|
)
|
|
|
|
def test_sql_flush_sequences_allow_cascade(self):
|
|
statements = connection.ops.sql_flush(
|
|
no_style(),
|
|
[Person._meta.db_table, Tag._meta.db_table],
|
|
reset_sequences=True,
|
|
allow_cascade=True,
|
|
)
|
|
self.assertEqual(
|
|
# The tables are processed in an unordered set.
|
|
sorted(statements[:-1]),
|
|
[
|
|
'DELETE FROM "backends_person";',
|
|
'DELETE FROM "backends_tag";',
|
|
'DELETE FROM "backends_verylongmodelnamezzzzzzzzzzzzzzzzzzzzzz'
|
|
"zzzzzzzzzzzzzzzzzzzz_m2m_also_quite_long_zzzzzzzzzzzzzzzzzzzz"
|
|
'zzzzzzzzzzzzzzzzzzzzzzz";',
|
|
],
|
|
)
|
|
self.assertIs(
|
|
statements[-1].startswith(
|
|
'UPDATE "sqlite_sequence" SET "seq" = 0 WHERE "name" IN ('
|
|
),
|
|
True,
|
|
)
|
|
self.assertIn("'backends_person'", statements[-1])
|
|
self.assertIn("'backends_tag'", statements[-1])
|
|
self.assertIn(
|
|
"'backends_verylongmodelnamezzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz"
|
|
"zzzz_m2m_also_quite_long_zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz"
|
|
"zzz'",
|
|
statements[-1],
|
|
)
|
|
|
|
def test_bulk_batch_size(self):
|
|
self.assertEqual(connection.ops.bulk_batch_size([], [Person()]), 1)
|
|
first_name_field = Person._meta.get_field("first_name")
|
|
last_name_field = Person._meta.get_field("last_name")
|
|
self.assertEqual(
|
|
connection.ops.bulk_batch_size([first_name_field], [Person()]), 500
|
|
)
|
|
self.assertEqual(
|
|
connection.ops.bulk_batch_size(
|
|
[first_name_field, last_name_field], [Person()]
|
|
),
|
|
connection.features.max_query_params // 2,
|
|
)
|
|
composite_pk = models.CompositePrimaryKey("first_name", "last_name")
|
|
composite_pk.fields = [first_name_field, last_name_field]
|
|
self.assertEqual(
|
|
connection.ops.bulk_batch_size(
|
|
[composite_pk, first_name_field], [Person()]
|
|
),
|
|
connection.features.max_query_params // 3,
|
|
)
|