mirror of
https://github.com/django/django.git
synced 2024-11-28 02:27:42 +01:00
63 lines
2.6 KiB
Python
63 lines
2.6 KiB
Python
from unittest import skipUnless
|
|
|
|
from django.db import connection
|
|
from django.test import TestCase
|
|
|
|
from .models import Article, ArticleTranslation, IndexTogetherSingleList
|
|
|
|
|
|
class SchemaIndexesTests(TestCase):
|
|
"""
|
|
Test index handling by the db.backends.schema infrastructure.
|
|
"""
|
|
def test_index_together(self):
|
|
editor = connection.schema_editor()
|
|
index_sql = editor._model_indexes_sql(Article)
|
|
self.assertEqual(len(index_sql), 1)
|
|
# Ensure the index name is properly quoted
|
|
self.assertIn(
|
|
connection.ops.quote_name(
|
|
editor._create_index_name(Article, ['headline', 'pub_date'], suffix='_idx')
|
|
),
|
|
index_sql[0]
|
|
)
|
|
|
|
def test_index_together_single_list(self):
|
|
# Test for using index_together with a single list (#22172)
|
|
index_sql = connection.schema_editor()._model_indexes_sql(IndexTogetherSingleList)
|
|
self.assertEqual(len(index_sql), 1)
|
|
|
|
@skipUnless(connection.vendor == 'postgresql',
|
|
"This is a postgresql-specific issue")
|
|
def test_postgresql_text_indexes(self):
|
|
"""Test creation of PostgreSQL-specific text indexes (#12234)"""
|
|
from .models import IndexedArticle
|
|
index_sql = connection.schema_editor()._model_indexes_sql(IndexedArticle)
|
|
self.assertEqual(len(index_sql), 5)
|
|
self.assertIn('("headline" varchar_pattern_ops)', index_sql[2])
|
|
self.assertIn('("body" text_pattern_ops)', index_sql[3])
|
|
# unique=True and db_index=True should only create the varchar-specific
|
|
# index (#19441).
|
|
self.assertIn('("slug" varchar_pattern_ops)', index_sql[4])
|
|
|
|
@skipUnless(connection.vendor == 'postgresql',
|
|
"This is a postgresql-specific issue")
|
|
def test_postgresql_virtual_relation_indexes(self):
|
|
"""Test indexes are not created for related objects"""
|
|
index_sql = connection.schema_editor()._model_indexes_sql(Article)
|
|
self.assertEqual(len(index_sql), 1)
|
|
|
|
@skipUnless(connection.vendor == 'mysql', "This is a mysql-specific issue")
|
|
def test_no_index_for_foreignkey(self):
|
|
"""
|
|
MySQL on InnoDB already creates indexes automatically for foreign keys.
|
|
(#14180).
|
|
"""
|
|
storage = connection.introspection.get_storage_engine(
|
|
connection.cursor(), ArticleTranslation._meta.db_table
|
|
)
|
|
if storage != "InnoDB":
|
|
self.skip("This test only applies to the InnoDB storage engine")
|
|
index_sql = connection.schema_editor()._model_indexes_sql(ArticleTranslation)
|
|
self.assertEqual(index_sql, [])
|