mirror of
https://github.com/django/django.git
synced 2024-12-28 03:55:50 +00:00
697 lines
26 KiB
Python
697 lines
26 KiB
Python
import datetime
|
|
from unittest import skipUnless
|
|
|
|
from django.conf import settings
|
|
from django.db import connection
|
|
from django.db.models import (
|
|
CASCADE,
|
|
CharField,
|
|
DateTimeField,
|
|
ForeignKey,
|
|
Index,
|
|
Model,
|
|
Q,
|
|
)
|
|
from django.db.models.functions import Lower
|
|
from django.test import (
|
|
TestCase,
|
|
TransactionTestCase,
|
|
ignore_warnings,
|
|
skipIfDBFeature,
|
|
skipUnlessDBFeature,
|
|
)
|
|
from django.test.utils import isolate_apps, override_settings
|
|
from django.utils import timezone
|
|
from django.utils.deprecation import RemovedInDjango51Warning
|
|
|
|
from .models import Article, ArticleTranslation, IndexedArticle2
|
|
|
|
|
|
class SchemaIndexesTests(TestCase):
|
|
"""
|
|
Test index handling by the db.backends.schema infrastructure.
|
|
"""
|
|
|
|
def test_index_name_hash(self):
|
|
"""
|
|
Index names should be deterministic.
|
|
"""
|
|
editor = connection.schema_editor()
|
|
index_name = editor._create_index_name(
|
|
table_name=Article._meta.db_table,
|
|
column_names=("c1",),
|
|
suffix="123",
|
|
)
|
|
self.assertEqual(index_name, "indexes_article_c1_a52bd80b123")
|
|
|
|
def test_index_name(self):
|
|
"""
|
|
Index names on the built-in database backends::
|
|
* Are truncated as needed.
|
|
* Include all the column names.
|
|
* Include a deterministic hash.
|
|
"""
|
|
long_name = "l%sng" % ("o" * 100)
|
|
editor = connection.schema_editor()
|
|
index_name = editor._create_index_name(
|
|
table_name=Article._meta.db_table,
|
|
column_names=("c1", "c2", long_name),
|
|
suffix="ix",
|
|
)
|
|
expected = {
|
|
"mysql": "indexes_article_c1_c2_looooooooooooooooooo_255179b2ix",
|
|
"oracle": "indexes_a_c1_c2_loo_255179b2ix",
|
|
"postgresql": "indexes_article_c1_c2_loooooooooooooooooo_255179b2ix",
|
|
"sqlite": "indexes_article_c1_c2_l%sng_255179b2ix" % ("o" * 100),
|
|
}
|
|
if connection.vendor not in expected:
|
|
self.skipTest(
|
|
"This test is only supported on the built-in database backends."
|
|
)
|
|
self.assertEqual(index_name, expected[connection.vendor])
|
|
|
|
def test_quoted_index_name(self):
|
|
editor = connection.schema_editor()
|
|
index_sql = [str(statement) for statement in editor._model_indexes_sql(Article)]
|
|
self.assertEqual(len(index_sql), 1)
|
|
# Ensure the index name is properly quoted.
|
|
self.assertIn(
|
|
connection.ops.quote_name(Article._meta.indexes[0].name),
|
|
index_sql[0],
|
|
)
|
|
|
|
@ignore_warnings(category=RemovedInDjango51Warning)
|
|
@isolate_apps("indexes")
|
|
def test_index_together_single_list(self):
|
|
class IndexTogetherSingleList(Model):
|
|
headline = CharField(max_length=100)
|
|
pub_date = DateTimeField()
|
|
|
|
class Meta:
|
|
index_together = ["headline", "pub_date"]
|
|
|
|
index_sql = connection.schema_editor()._model_indexes_sql(
|
|
IndexTogetherSingleList
|
|
)
|
|
self.assertEqual(len(index_sql), 1)
|
|
|
|
def test_columns_list_sql(self):
|
|
index = Index(fields=["headline"], name="whitespace_idx")
|
|
editor = connection.schema_editor()
|
|
self.assertIn(
|
|
"(%s)" % editor.quote_name("headline"),
|
|
str(index.create_sql(Article, editor)),
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_index_column_ordering")
|
|
def test_descending_columns_list_sql(self):
|
|
index = Index(fields=["-headline"], name="whitespace_idx")
|
|
editor = connection.schema_editor()
|
|
self.assertIn(
|
|
"(%s DESC)" % editor.quote_name("headline"),
|
|
str(index.create_sql(Article, editor)),
|
|
)
|
|
|
|
|
|
class SchemaIndexesNotPostgreSQLTests(TransactionTestCase):
|
|
available_apps = ["indexes"]
|
|
|
|
def test_create_index_ignores_opclasses(self):
|
|
index = Index(
|
|
name="test_ops_class",
|
|
fields=["headline"],
|
|
opclasses=["varchar_pattern_ops"],
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
# This would error if opclasses weren't ignored.
|
|
editor.add_index(IndexedArticle2, index)
|
|
|
|
|
|
# The `condition` parameter is ignored by databases that don't support partial
|
|
# indexes.
|
|
@skipIfDBFeature("supports_partial_indexes")
|
|
class PartialIndexConditionIgnoredTests(TransactionTestCase):
|
|
available_apps = ["indexes"]
|
|
|
|
def test_condition_ignored(self):
|
|
index = Index(
|
|
name="test_condition_ignored",
|
|
fields=["published"],
|
|
condition=Q(published=True),
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
# This would error if condition weren't ignored.
|
|
editor.add_index(Article, index)
|
|
|
|
self.assertNotIn(
|
|
"WHERE %s" % editor.quote_name("published"),
|
|
str(index.create_sql(Article, editor)),
|
|
)
|
|
|
|
|
|
@skipUnless(connection.vendor == "postgresql", "PostgreSQL tests")
|
|
class SchemaIndexesPostgreSQLTests(TransactionTestCase):
|
|
available_apps = ["indexes"]
|
|
get_opclass_query = """
|
|
SELECT opcname, c.relname FROM pg_opclass AS oc
|
|
JOIN pg_index as i on oc.oid = ANY(i.indclass)
|
|
JOIN pg_class as c on c.oid = i.indexrelid
|
|
WHERE c.relname = '%s'
|
|
"""
|
|
|
|
def test_text_indexes(self):
|
|
"""Test creation of PostgreSQL-specific text indexes (#12234)"""
|
|
from .models import IndexedArticle
|
|
|
|
index_sql = [
|
|
str(statement)
|
|
for statement in connection.schema_editor()._model_indexes_sql(
|
|
IndexedArticle
|
|
)
|
|
]
|
|
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])
|
|
|
|
def test_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)
|
|
|
|
def test_ops_class(self):
|
|
index = Index(
|
|
name="test_ops_class",
|
|
fields=["headline"],
|
|
opclasses=["varchar_pattern_ops"],
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(IndexedArticle2, index)
|
|
with editor.connection.cursor() as cursor:
|
|
cursor.execute(self.get_opclass_query % "test_ops_class")
|
|
self.assertEqual(
|
|
cursor.fetchall(), [("varchar_pattern_ops", "test_ops_class")]
|
|
)
|
|
|
|
def test_ops_class_multiple_columns(self):
|
|
index = Index(
|
|
name="test_ops_class_multiple",
|
|
fields=["headline", "body"],
|
|
opclasses=["varchar_pattern_ops", "text_pattern_ops"],
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(IndexedArticle2, index)
|
|
with editor.connection.cursor() as cursor:
|
|
cursor.execute(self.get_opclass_query % "test_ops_class_multiple")
|
|
expected_ops_classes = (
|
|
("varchar_pattern_ops", "test_ops_class_multiple"),
|
|
("text_pattern_ops", "test_ops_class_multiple"),
|
|
)
|
|
self.assertCountEqual(cursor.fetchall(), expected_ops_classes)
|
|
|
|
def test_ops_class_partial(self):
|
|
index = Index(
|
|
name="test_ops_class_partial",
|
|
fields=["body"],
|
|
opclasses=["text_pattern_ops"],
|
|
condition=Q(headline__contains="China"),
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(IndexedArticle2, index)
|
|
with editor.connection.cursor() as cursor:
|
|
cursor.execute(self.get_opclass_query % "test_ops_class_partial")
|
|
self.assertCountEqual(
|
|
cursor.fetchall(), [("text_pattern_ops", "test_ops_class_partial")]
|
|
)
|
|
|
|
def test_ops_class_partial_tablespace(self):
|
|
indexname = "test_ops_class_tblspace"
|
|
index = Index(
|
|
name=indexname,
|
|
fields=["body"],
|
|
opclasses=["text_pattern_ops"],
|
|
condition=Q(headline__contains="China"),
|
|
db_tablespace="pg_default",
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(IndexedArticle2, index)
|
|
self.assertIn(
|
|
'TABLESPACE "pg_default" ',
|
|
str(index.create_sql(IndexedArticle2, editor)),
|
|
)
|
|
with editor.connection.cursor() as cursor:
|
|
cursor.execute(self.get_opclass_query % indexname)
|
|
self.assertCountEqual(cursor.fetchall(), [("text_pattern_ops", indexname)])
|
|
|
|
def test_ops_class_descending(self):
|
|
indexname = "test_ops_class_ordered"
|
|
index = Index(
|
|
name=indexname,
|
|
fields=["-body"],
|
|
opclasses=["text_pattern_ops"],
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(IndexedArticle2, index)
|
|
with editor.connection.cursor() as cursor:
|
|
cursor.execute(self.get_opclass_query % indexname)
|
|
self.assertCountEqual(cursor.fetchall(), [("text_pattern_ops", indexname)])
|
|
|
|
def test_ops_class_descending_partial(self):
|
|
indexname = "test_ops_class_ordered_partial"
|
|
index = Index(
|
|
name=indexname,
|
|
fields=["-body"],
|
|
opclasses=["text_pattern_ops"],
|
|
condition=Q(headline__contains="China"),
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(IndexedArticle2, index)
|
|
with editor.connection.cursor() as cursor:
|
|
cursor.execute(self.get_opclass_query % indexname)
|
|
self.assertCountEqual(cursor.fetchall(), [("text_pattern_ops", indexname)])
|
|
|
|
@skipUnlessDBFeature("supports_covering_indexes")
|
|
def test_ops_class_include(self):
|
|
index_name = "test_ops_class_include"
|
|
index = Index(
|
|
name=index_name,
|
|
fields=["body"],
|
|
opclasses=["text_pattern_ops"],
|
|
include=["headline"],
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(IndexedArticle2, index)
|
|
with editor.connection.cursor() as cursor:
|
|
cursor.execute(self.get_opclass_query % index_name)
|
|
self.assertCountEqual(cursor.fetchall(), [("text_pattern_ops", index_name)])
|
|
|
|
@skipUnlessDBFeature("supports_covering_indexes")
|
|
def test_ops_class_include_tablespace(self):
|
|
index_name = "test_ops_class_include_tblspace"
|
|
index = Index(
|
|
name=index_name,
|
|
fields=["body"],
|
|
opclasses=["text_pattern_ops"],
|
|
include=["headline"],
|
|
db_tablespace="pg_default",
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(IndexedArticle2, index)
|
|
self.assertIn(
|
|
'TABLESPACE "pg_default"',
|
|
str(index.create_sql(IndexedArticle2, editor)),
|
|
)
|
|
with editor.connection.cursor() as cursor:
|
|
cursor.execute(self.get_opclass_query % index_name)
|
|
self.assertCountEqual(cursor.fetchall(), [("text_pattern_ops", index_name)])
|
|
|
|
def test_ops_class_columns_lists_sql(self):
|
|
index = Index(
|
|
fields=["headline"],
|
|
name="whitespace_idx",
|
|
opclasses=["text_pattern_ops"],
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
self.assertIn(
|
|
"(%s text_pattern_ops)" % editor.quote_name("headline"),
|
|
str(index.create_sql(Article, editor)),
|
|
)
|
|
|
|
def test_ops_class_descending_columns_list_sql(self):
|
|
index = Index(
|
|
fields=["-headline"],
|
|
name="whitespace_idx",
|
|
opclasses=["text_pattern_ops"],
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
self.assertIn(
|
|
"(%s text_pattern_ops DESC)" % editor.quote_name("headline"),
|
|
str(index.create_sql(Article, editor)),
|
|
)
|
|
|
|
|
|
@skipUnless(connection.vendor == "mysql", "MySQL tests")
|
|
class SchemaIndexesMySQLTests(TransactionTestCase):
|
|
available_apps = ["indexes"]
|
|
|
|
def test_no_index_for_foreignkey(self):
|
|
"""
|
|
MySQL on InnoDB already creates indexes automatically for foreign keys.
|
|
(#14180). An index should be created if db_constraint=False (#26171).
|
|
"""
|
|
with connection.cursor() as cursor:
|
|
storage = connection.introspection.get_storage_engine(
|
|
cursor,
|
|
ArticleTranslation._meta.db_table,
|
|
)
|
|
if storage != "InnoDB":
|
|
self.skipTest("This test only applies to the InnoDB storage engine")
|
|
index_sql = [
|
|
str(statement)
|
|
for statement in connection.schema_editor()._model_indexes_sql(
|
|
ArticleTranslation
|
|
)
|
|
]
|
|
self.assertEqual(
|
|
index_sql,
|
|
[
|
|
"CREATE INDEX "
|
|
"`indexes_articletranslation_article_no_constraint_id_d6c0806b` "
|
|
"ON `indexes_articletranslation` (`article_no_constraint_id`)"
|
|
],
|
|
)
|
|
|
|
# The index also shouldn't be created if the ForeignKey is added after
|
|
# the model was created.
|
|
field_created = False
|
|
try:
|
|
with connection.schema_editor() as editor:
|
|
new_field = ForeignKey(Article, CASCADE)
|
|
new_field.set_attributes_from_name("new_foreign_key")
|
|
editor.add_field(ArticleTranslation, new_field)
|
|
field_created = True
|
|
# No deferred SQL. The FK constraint is included in the
|
|
# statement to add the field.
|
|
self.assertFalse(editor.deferred_sql)
|
|
finally:
|
|
if field_created:
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_field(ArticleTranslation, new_field)
|
|
|
|
|
|
@skipUnlessDBFeature("supports_partial_indexes")
|
|
# SQLite doesn't support timezone-aware datetimes when USE_TZ is False.
|
|
@override_settings(USE_TZ=True)
|
|
class PartialIndexTests(TransactionTestCase):
|
|
# Schema editor is used to create the index to test that it works.
|
|
available_apps = ["indexes"]
|
|
|
|
def test_partial_index(self):
|
|
with connection.schema_editor() as editor:
|
|
index = Index(
|
|
name="recent_article_idx",
|
|
fields=["pub_date"],
|
|
condition=Q(
|
|
pub_date__gt=datetime.datetime(
|
|
year=2015,
|
|
month=1,
|
|
day=1,
|
|
# PostgreSQL would otherwise complain about the lookup
|
|
# being converted to a mutable function (by removing
|
|
# the timezone in the cast) which is forbidden.
|
|
tzinfo=timezone.get_current_timezone(),
|
|
),
|
|
),
|
|
)
|
|
self.assertIn(
|
|
"WHERE %s" % editor.quote_name("pub_date"),
|
|
str(index.create_sql(Article, schema_editor=editor)),
|
|
)
|
|
editor.add_index(index=index, model=Article)
|
|
with connection.cursor() as cursor:
|
|
self.assertIn(
|
|
index.name,
|
|
connection.introspection.get_constraints(
|
|
cursor=cursor,
|
|
table_name=Article._meta.db_table,
|
|
),
|
|
)
|
|
editor.remove_index(index=index, model=Article)
|
|
|
|
def test_integer_restriction_partial(self):
|
|
with connection.schema_editor() as editor:
|
|
index = Index(
|
|
name="recent_article_idx",
|
|
fields=["id"],
|
|
condition=Q(pk__gt=1),
|
|
)
|
|
self.assertIn(
|
|
"WHERE %s" % editor.quote_name("id"),
|
|
str(index.create_sql(Article, schema_editor=editor)),
|
|
)
|
|
editor.add_index(index=index, model=Article)
|
|
with connection.cursor() as cursor:
|
|
self.assertIn(
|
|
index.name,
|
|
connection.introspection.get_constraints(
|
|
cursor=cursor,
|
|
table_name=Article._meta.db_table,
|
|
),
|
|
)
|
|
editor.remove_index(index=index, model=Article)
|
|
|
|
def test_boolean_restriction_partial(self):
|
|
with connection.schema_editor() as editor:
|
|
index = Index(
|
|
name="published_index",
|
|
fields=["published"],
|
|
condition=Q(published=True),
|
|
)
|
|
self.assertIn(
|
|
"WHERE %s" % editor.quote_name("published"),
|
|
str(index.create_sql(Article, schema_editor=editor)),
|
|
)
|
|
editor.add_index(index=index, model=Article)
|
|
with connection.cursor() as cursor:
|
|
self.assertIn(
|
|
index.name,
|
|
connection.introspection.get_constraints(
|
|
cursor=cursor,
|
|
table_name=Article._meta.db_table,
|
|
),
|
|
)
|
|
editor.remove_index(index=index, model=Article)
|
|
|
|
@skipUnlessDBFeature("supports_functions_in_partial_indexes")
|
|
def test_multiple_conditions(self):
|
|
with connection.schema_editor() as editor:
|
|
index = Index(
|
|
name="recent_article_idx",
|
|
fields=["pub_date", "headline"],
|
|
condition=(
|
|
Q(
|
|
pub_date__gt=datetime.datetime(
|
|
year=2015,
|
|
month=1,
|
|
day=1,
|
|
tzinfo=timezone.get_current_timezone(),
|
|
)
|
|
)
|
|
& Q(headline__contains="China")
|
|
),
|
|
)
|
|
sql = str(index.create_sql(Article, schema_editor=editor))
|
|
where = sql.find("WHERE")
|
|
self.assertIn("WHERE (%s" % editor.quote_name("pub_date"), sql)
|
|
# Because each backend has different syntax for the operators,
|
|
# check ONLY the occurrence of headline in the SQL.
|
|
self.assertGreater(sql.rfind("headline"), where)
|
|
editor.add_index(index=index, model=Article)
|
|
with connection.cursor() as cursor:
|
|
self.assertIn(
|
|
index.name,
|
|
connection.introspection.get_constraints(
|
|
cursor=cursor,
|
|
table_name=Article._meta.db_table,
|
|
),
|
|
)
|
|
editor.remove_index(index=index, model=Article)
|
|
|
|
def test_is_null_condition(self):
|
|
with connection.schema_editor() as editor:
|
|
index = Index(
|
|
name="recent_article_idx",
|
|
fields=["pub_date"],
|
|
condition=Q(pub_date__isnull=False),
|
|
)
|
|
self.assertIn(
|
|
"WHERE %s IS NOT NULL" % editor.quote_name("pub_date"),
|
|
str(index.create_sql(Article, schema_editor=editor)),
|
|
)
|
|
editor.add_index(index=index, model=Article)
|
|
with connection.cursor() as cursor:
|
|
self.assertIn(
|
|
index.name,
|
|
connection.introspection.get_constraints(
|
|
cursor=cursor,
|
|
table_name=Article._meta.db_table,
|
|
),
|
|
)
|
|
editor.remove_index(index=index, model=Article)
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_partial_func_index(self):
|
|
index_name = "partial_func_idx"
|
|
index = Index(
|
|
Lower("headline").desc(),
|
|
name=index_name,
|
|
condition=Q(pub_date__isnull=False),
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(index=index, model=Article)
|
|
sql = index.create_sql(Article, schema_editor=editor)
|
|
table = Article._meta.db_table
|
|
self.assertIs(sql.references_column(table, "headline"), True)
|
|
sql = str(sql)
|
|
self.assertIn("LOWER(%s)" % editor.quote_name("headline"), sql)
|
|
self.assertIn(
|
|
"WHERE %s IS NOT NULL" % editor.quote_name("pub_date"),
|
|
sql,
|
|
)
|
|
self.assertGreater(sql.find("WHERE"), sql.find("LOWER"))
|
|
with connection.cursor() as cursor:
|
|
constraints = connection.introspection.get_constraints(
|
|
cursor=cursor,
|
|
table_name=table,
|
|
)
|
|
self.assertIn(index_name, constraints)
|
|
if connection.features.supports_index_column_ordering:
|
|
self.assertEqual(constraints[index_name]["orders"], ["DESC"])
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_index(Article, index)
|
|
with connection.cursor() as cursor:
|
|
self.assertNotIn(
|
|
index_name,
|
|
connection.introspection.get_constraints(
|
|
cursor=cursor,
|
|
table_name=table,
|
|
),
|
|
)
|
|
|
|
|
|
@skipUnlessDBFeature("supports_covering_indexes")
|
|
class CoveringIndexTests(TransactionTestCase):
|
|
available_apps = ["indexes"]
|
|
|
|
def test_covering_index(self):
|
|
index = Index(
|
|
name="covering_headline_idx",
|
|
fields=["headline"],
|
|
include=["pub_date", "published"],
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
self.assertIn(
|
|
"(%s) INCLUDE (%s, %s)"
|
|
% (
|
|
editor.quote_name("headline"),
|
|
editor.quote_name("pub_date"),
|
|
editor.quote_name("published"),
|
|
),
|
|
str(index.create_sql(Article, editor)),
|
|
)
|
|
editor.add_index(Article, index)
|
|
with connection.cursor() as cursor:
|
|
constraints = connection.introspection.get_constraints(
|
|
cursor=cursor,
|
|
table_name=Article._meta.db_table,
|
|
)
|
|
self.assertIn(index.name, constraints)
|
|
self.assertEqual(
|
|
constraints[index.name]["columns"],
|
|
["headline", "pub_date", "published"],
|
|
)
|
|
editor.remove_index(Article, index)
|
|
with connection.cursor() as cursor:
|
|
self.assertNotIn(
|
|
index.name,
|
|
connection.introspection.get_constraints(
|
|
cursor=cursor,
|
|
table_name=Article._meta.db_table,
|
|
),
|
|
)
|
|
|
|
def test_covering_partial_index(self):
|
|
index = Index(
|
|
name="covering_partial_headline_idx",
|
|
fields=["headline"],
|
|
include=["pub_date"],
|
|
condition=Q(pub_date__isnull=False),
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
extra_sql = ""
|
|
if settings.DEFAULT_INDEX_TABLESPACE:
|
|
extra_sql = "TABLESPACE %s " % editor.quote_name(
|
|
settings.DEFAULT_INDEX_TABLESPACE
|
|
)
|
|
self.assertIn(
|
|
"(%s) INCLUDE (%s) %sWHERE %s "
|
|
% (
|
|
editor.quote_name("headline"),
|
|
editor.quote_name("pub_date"),
|
|
extra_sql,
|
|
editor.quote_name("pub_date"),
|
|
),
|
|
str(index.create_sql(Article, editor)),
|
|
)
|
|
editor.add_index(Article, index)
|
|
with connection.cursor() as cursor:
|
|
constraints = connection.introspection.get_constraints(
|
|
cursor=cursor,
|
|
table_name=Article._meta.db_table,
|
|
)
|
|
self.assertIn(index.name, constraints)
|
|
self.assertEqual(
|
|
constraints[index.name]["columns"],
|
|
["headline", "pub_date"],
|
|
)
|
|
editor.remove_index(Article, index)
|
|
with connection.cursor() as cursor:
|
|
self.assertNotIn(
|
|
index.name,
|
|
connection.introspection.get_constraints(
|
|
cursor=cursor,
|
|
table_name=Article._meta.db_table,
|
|
),
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_expression_indexes")
|
|
def test_covering_func_index(self):
|
|
index_name = "covering_func_headline_idx"
|
|
index = Index(Lower("headline"), name=index_name, include=["pub_date"])
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(index=index, model=Article)
|
|
sql = index.create_sql(Article, schema_editor=editor)
|
|
table = Article._meta.db_table
|
|
self.assertIs(sql.references_column(table, "headline"), True)
|
|
sql = str(sql)
|
|
self.assertIn("LOWER(%s)" % editor.quote_name("headline"), sql)
|
|
self.assertIn("INCLUDE (%s)" % editor.quote_name("pub_date"), sql)
|
|
self.assertGreater(sql.find("INCLUDE"), sql.find("LOWER"))
|
|
with connection.cursor() as cursor:
|
|
constraints = connection.introspection.get_constraints(
|
|
cursor=cursor,
|
|
table_name=table,
|
|
)
|
|
self.assertIn(index_name, constraints)
|
|
self.assertIn("pub_date", constraints[index_name]["columns"])
|
|
with connection.schema_editor() as editor:
|
|
editor.remove_index(Article, index)
|
|
with connection.cursor() as cursor:
|
|
self.assertNotIn(
|
|
index_name,
|
|
connection.introspection.get_constraints(
|
|
cursor=cursor,
|
|
table_name=table,
|
|
),
|
|
)
|
|
|
|
|
|
@skipIfDBFeature("supports_covering_indexes")
|
|
class CoveringIndexIgnoredTests(TransactionTestCase):
|
|
available_apps = ["indexes"]
|
|
|
|
def test_covering_ignored(self):
|
|
index = Index(
|
|
name="test_covering_ignored",
|
|
fields=["headline"],
|
|
include=["pub_date"],
|
|
)
|
|
with connection.schema_editor() as editor:
|
|
editor.add_index(Article, index)
|
|
self.assertNotIn(
|
|
"INCLUDE (%s)" % editor.quote_name("headline"),
|
|
str(index.create_sql(Article, editor)),
|
|
)
|