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from unittest import skipUnless
from django.core.management.color import no_style
from django.db import connections, DEFAULT_DB_ALIAS
from django.test import TestCase
from .models import Article, IndexTogetherSingleList
class IndexesTests(TestCase):
def test_index_together(self):
connection = connections[DEFAULT_DB_ALIAS]
index_sql = connection.creation.sql_indexes_for_model(Article, no_style())
self.assertEqual(len(index_sql), 1)
def test_index_together_single_list(self):
# Test for using index_together with a single list (#22172)
connection = connections[DEFAULT_DB_ALIAS]
index_sql = connection.creation.sql_indexes_for_model(IndexTogetherSingleList, no_style())
self.assertEqual(len(index_sql), 1)
@skipUnless(connections[DEFAULT_DB_ALIAS].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
connection = connections[DEFAULT_DB_ALIAS]
index_sql = connection.creation.sql_indexes_for_model(IndexedArticle, no_style())
self.assertEqual(len(index_sql), 5)
self.assertIn('("headline" varchar_pattern_ops)', index_sql[1])
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])
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