mirror of
https://github.com/django/django.git
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690 lines
26 KiB
Python
690 lines
26 KiB
Python
import datetime
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from unittest import skipUnless
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from django.conf import settings
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from django.db import connection
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from django.db.models import CASCADE, CharField, ForeignKey, Index, Q
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from django.db.models.functions import Lower
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from django.test import (
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TestCase,
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TransactionTestCase,
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skipIfDBFeature,
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skipUnlessDBFeature,
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)
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from django.test.utils import override_settings
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from django.utils import timezone
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from .models import Article, ArticleTranslation, IndexedArticle2
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class SchemaIndexesTests(TestCase):
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"""
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Test index handling by the db.backends.schema infrastructure.
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"""
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def test_index_name_hash(self):
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"""
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Index names should be deterministic.
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"""
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editor = connection.schema_editor()
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index_name = editor._create_index_name(
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table_name=Article._meta.db_table,
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column_names=("c1",),
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suffix="123",
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)
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self.assertEqual(index_name, "indexes_article_c1_a52bd80b123")
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def test_index_name(self):
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"""
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Index names on the built-in database backends::
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* Are truncated as needed.
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* Include all the column names.
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* Include a deterministic hash.
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"""
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long_name = "l%sng" % ("o" * 100)
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editor = connection.schema_editor()
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index_name = editor._create_index_name(
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table_name=Article._meta.db_table,
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column_names=("c1", "c2", long_name),
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suffix="ix",
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)
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expected = {
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"mysql": "indexes_article_c1_c2_looooooooooooooooooo_255179b2ix",
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"oracle": "indexes_a_c1_c2_loo_255179b2ix",
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"postgresql": "indexes_article_c1_c2_loooooooooooooooooo_255179b2ix",
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"sqlite": "indexes_article_c1_c2_l%sng_255179b2ix" % ("o" * 100),
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}
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if connection.vendor not in expected:
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self.skipTest(
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"This test is only supported on the built-in database backends."
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)
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self.assertEqual(index_name, expected[connection.vendor])
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def test_quoted_index_name(self):
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editor = connection.schema_editor()
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index_sql = [str(statement) for statement in editor._model_indexes_sql(Article)]
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self.assertEqual(len(index_sql), 1)
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# Ensure the index name is properly quoted.
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self.assertIn(
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connection.ops.quote_name(Article._meta.indexes[0].name),
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index_sql[0],
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)
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def test_columns_list_sql(self):
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index = Index(fields=["headline"], name="whitespace_idx")
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editor = connection.schema_editor()
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self.assertIn(
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"(%s)" % editor.quote_name("headline"),
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str(index.create_sql(Article, editor)),
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)
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@skipUnlessDBFeature("supports_index_column_ordering")
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def test_descending_columns_list_sql(self):
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index = Index(fields=["-headline"], name="whitespace_idx")
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editor = connection.schema_editor()
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self.assertIn(
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"(%s DESC)" % editor.quote_name("headline"),
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str(index.create_sql(Article, editor)),
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)
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@skipUnlessDBFeature("can_create_inline_fk", "can_rollback_ddl")
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def test_alter_field_unique_false_removes_deferred_sql(self):
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field_added = CharField(max_length=127, unique=True)
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field_added.set_attributes_from_name("charfield_added")
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field_to_alter = CharField(max_length=127, unique=True)
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field_to_alter.set_attributes_from_name("charfield_altered")
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altered_field = CharField(max_length=127, unique=False)
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altered_field.set_attributes_from_name("charfield_altered")
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with connection.schema_editor() as editor:
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editor.add_field(ArticleTranslation, field_added)
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editor.add_field(ArticleTranslation, field_to_alter)
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self.assertEqual(len(editor.deferred_sql), 2)
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editor.alter_field(ArticleTranslation, field_to_alter, altered_field)
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self.assertEqual(len(editor.deferred_sql), 1)
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self.assertIn("charfield_added", str(editor.deferred_sql[0].parts["name"]))
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class SchemaIndexesNotPostgreSQLTests(TransactionTestCase):
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available_apps = ["indexes"]
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def test_create_index_ignores_opclasses(self):
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index = Index(
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name="test_ops_class",
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fields=["headline"],
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opclasses=["varchar_pattern_ops"],
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)
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with connection.schema_editor() as editor:
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# This would error if opclasses weren't ignored.
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editor.add_index(IndexedArticle2, index)
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# The `condition` parameter is ignored by databases that don't support partial
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# indexes.
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@skipIfDBFeature("supports_partial_indexes")
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class PartialIndexConditionIgnoredTests(TransactionTestCase):
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available_apps = ["indexes"]
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def test_condition_ignored(self):
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index = Index(
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name="test_condition_ignored",
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fields=["published"],
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condition=Q(published=True),
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)
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with connection.schema_editor() as editor:
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# This would error if condition weren't ignored.
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editor.add_index(Article, index)
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self.assertNotIn(
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"WHERE %s" % editor.quote_name("published"),
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str(index.create_sql(Article, editor)),
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)
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@skipUnless(connection.vendor == "postgresql", "PostgreSQL tests")
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class SchemaIndexesPostgreSQLTests(TransactionTestCase):
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available_apps = ["indexes"]
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get_opclass_query = """
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SELECT opcname, c.relname FROM pg_opclass AS oc
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JOIN pg_index as i on oc.oid = ANY(i.indclass)
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JOIN pg_class as c on c.oid = i.indexrelid
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WHERE c.relname = '%s'
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"""
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def test_text_indexes(self):
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"""Test creation of PostgreSQL-specific text indexes (#12234)"""
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from .models import IndexedArticle
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index_sql = [
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str(statement)
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for statement in connection.schema_editor()._model_indexes_sql(
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IndexedArticle
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)
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]
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self.assertEqual(len(index_sql), 5)
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self.assertIn('("headline" varchar_pattern_ops)', index_sql[1])
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self.assertIn('("body" text_pattern_ops)', index_sql[3])
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# unique=True and db_index=True should only create the varchar-specific
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# index (#19441).
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self.assertIn('("slug" varchar_pattern_ops)', index_sql[4])
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def test_virtual_relation_indexes(self):
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"""Test indexes are not created for related objects"""
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index_sql = connection.schema_editor()._model_indexes_sql(Article)
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self.assertEqual(len(index_sql), 1)
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def test_ops_class(self):
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index = Index(
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name="test_ops_class",
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fields=["headline"],
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opclasses=["varchar_pattern_ops"],
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)
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with connection.schema_editor() as editor:
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editor.add_index(IndexedArticle2, index)
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with editor.connection.cursor() as cursor:
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cursor.execute(self.get_opclass_query % "test_ops_class")
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self.assertEqual(
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cursor.fetchall(), [("varchar_pattern_ops", "test_ops_class")]
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)
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def test_ops_class_multiple_columns(self):
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index = Index(
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name="test_ops_class_multiple",
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fields=["headline", "body"],
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opclasses=["varchar_pattern_ops", "text_pattern_ops"],
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)
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with connection.schema_editor() as editor:
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editor.add_index(IndexedArticle2, index)
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with editor.connection.cursor() as cursor:
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cursor.execute(self.get_opclass_query % "test_ops_class_multiple")
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expected_ops_classes = (
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("varchar_pattern_ops", "test_ops_class_multiple"),
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("text_pattern_ops", "test_ops_class_multiple"),
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)
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self.assertCountEqual(cursor.fetchall(), expected_ops_classes)
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def test_ops_class_partial(self):
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index = Index(
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name="test_ops_class_partial",
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fields=["body"],
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opclasses=["text_pattern_ops"],
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condition=Q(headline__contains="China"),
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)
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with connection.schema_editor() as editor:
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editor.add_index(IndexedArticle2, index)
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with editor.connection.cursor() as cursor:
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cursor.execute(self.get_opclass_query % "test_ops_class_partial")
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self.assertCountEqual(
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cursor.fetchall(), [("text_pattern_ops", "test_ops_class_partial")]
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)
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def test_ops_class_partial_tablespace(self):
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indexname = "test_ops_class_tblspace"
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index = Index(
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name=indexname,
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fields=["body"],
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opclasses=["text_pattern_ops"],
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condition=Q(headline__contains="China"),
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db_tablespace="pg_default",
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)
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with connection.schema_editor() as editor:
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editor.add_index(IndexedArticle2, index)
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self.assertIn(
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'TABLESPACE "pg_default" ',
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str(index.create_sql(IndexedArticle2, editor)),
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)
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with editor.connection.cursor() as cursor:
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cursor.execute(self.get_opclass_query % indexname)
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self.assertCountEqual(cursor.fetchall(), [("text_pattern_ops", indexname)])
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def test_ops_class_descending(self):
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indexname = "test_ops_class_ordered"
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index = Index(
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name=indexname,
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fields=["-body"],
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opclasses=["text_pattern_ops"],
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)
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with connection.schema_editor() as editor:
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editor.add_index(IndexedArticle2, index)
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with editor.connection.cursor() as cursor:
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cursor.execute(self.get_opclass_query % indexname)
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self.assertCountEqual(cursor.fetchall(), [("text_pattern_ops", indexname)])
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def test_ops_class_descending_partial(self):
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indexname = "test_ops_class_ordered_partial"
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index = Index(
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name=indexname,
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fields=["-body"],
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opclasses=["text_pattern_ops"],
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condition=Q(headline__contains="China"),
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)
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with connection.schema_editor() as editor:
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editor.add_index(IndexedArticle2, index)
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with editor.connection.cursor() as cursor:
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cursor.execute(self.get_opclass_query % indexname)
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self.assertCountEqual(cursor.fetchall(), [("text_pattern_ops", indexname)])
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@skipUnlessDBFeature("supports_covering_indexes")
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def test_ops_class_include(self):
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index_name = "test_ops_class_include"
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index = Index(
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name=index_name,
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fields=["body"],
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opclasses=["text_pattern_ops"],
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include=["headline"],
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)
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with connection.schema_editor() as editor:
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editor.add_index(IndexedArticle2, index)
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with editor.connection.cursor() as cursor:
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cursor.execute(self.get_opclass_query % index_name)
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self.assertCountEqual(cursor.fetchall(), [("text_pattern_ops", index_name)])
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@skipUnlessDBFeature("supports_covering_indexes")
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def test_ops_class_include_tablespace(self):
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index_name = "test_ops_class_include_tblspace"
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index = Index(
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name=index_name,
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fields=["body"],
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opclasses=["text_pattern_ops"],
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include=["headline"],
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db_tablespace="pg_default",
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)
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with connection.schema_editor() as editor:
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editor.add_index(IndexedArticle2, index)
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self.assertIn(
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'TABLESPACE "pg_default"',
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str(index.create_sql(IndexedArticle2, editor)),
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)
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with editor.connection.cursor() as cursor:
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cursor.execute(self.get_opclass_query % index_name)
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self.assertCountEqual(cursor.fetchall(), [("text_pattern_ops", index_name)])
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def test_ops_class_columns_lists_sql(self):
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index = Index(
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fields=["headline"],
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name="whitespace_idx",
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opclasses=["text_pattern_ops"],
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)
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with connection.schema_editor() as editor:
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self.assertIn(
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"(%s text_pattern_ops)" % editor.quote_name("headline"),
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str(index.create_sql(Article, editor)),
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)
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def test_ops_class_descending_columns_list_sql(self):
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index = Index(
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fields=["-headline"],
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name="whitespace_idx",
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opclasses=["text_pattern_ops"],
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)
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with connection.schema_editor() as editor:
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self.assertIn(
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"(%s text_pattern_ops DESC)" % editor.quote_name("headline"),
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str(index.create_sql(Article, editor)),
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)
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@skipUnless(connection.vendor == "mysql", "MySQL tests")
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class SchemaIndexesMySQLTests(TransactionTestCase):
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available_apps = ["indexes"]
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def test_no_index_for_foreignkey(self):
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"""
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MySQL on InnoDB already creates indexes automatically for foreign keys.
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(#14180). An index should be created if db_constraint=False (#26171).
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"""
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with connection.cursor() as cursor:
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storage = connection.introspection.get_storage_engine(
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cursor,
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ArticleTranslation._meta.db_table,
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)
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if storage != "InnoDB":
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self.skipTest("This test only applies to the InnoDB storage engine")
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index_sql = [
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str(statement)
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for statement in connection.schema_editor()._model_indexes_sql(
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ArticleTranslation
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)
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]
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self.assertEqual(
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index_sql,
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[
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"CREATE INDEX "
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"`indexes_articletranslation_article_no_constraint_id_d6c0806b` "
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"ON `indexes_articletranslation` (`article_no_constraint_id`)"
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],
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)
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# The index also shouldn't be created if the ForeignKey is added after
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# the model was created.
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field_created = False
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try:
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with connection.schema_editor() as editor:
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new_field = ForeignKey(Article, CASCADE)
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new_field.set_attributes_from_name("new_foreign_key")
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editor.add_field(ArticleTranslation, new_field)
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field_created = True
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# No deferred SQL. The FK constraint is included in the
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# statement to add the field.
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self.assertFalse(editor.deferred_sql)
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finally:
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if field_created:
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with connection.schema_editor() as editor:
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editor.remove_field(ArticleTranslation, new_field)
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@skipUnlessDBFeature("supports_partial_indexes")
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# SQLite doesn't support timezone-aware datetimes when USE_TZ is False.
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@override_settings(USE_TZ=True)
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class PartialIndexTests(TransactionTestCase):
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# Schema editor is used to create the index to test that it works.
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available_apps = ["indexes"]
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def test_partial_index(self):
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with connection.schema_editor() as editor:
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index = Index(
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name="recent_article_idx",
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fields=["pub_date"],
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condition=Q(
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pub_date__gt=datetime.datetime(
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year=2015,
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month=1,
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day=1,
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# PostgreSQL would otherwise complain about the lookup
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# being converted to a mutable function (by removing
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# the timezone in the cast) which is forbidden.
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tzinfo=timezone.get_current_timezone(),
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),
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),
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)
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self.assertIn(
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"WHERE %s" % editor.quote_name("pub_date"),
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str(index.create_sql(Article, schema_editor=editor)),
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)
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editor.add_index(index=index, model=Article)
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with connection.cursor() as cursor:
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self.assertIn(
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index.name,
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connection.introspection.get_constraints(
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cursor=cursor,
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table_name=Article._meta.db_table,
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),
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)
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editor.remove_index(index=index, model=Article)
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def test_integer_restriction_partial(self):
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with connection.schema_editor() as editor:
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index = Index(
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name="recent_article_idx",
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fields=["id"],
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condition=Q(pk__gt=1),
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)
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self.assertIn(
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"WHERE %s" % editor.quote_name("id"),
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str(index.create_sql(Article, schema_editor=editor)),
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)
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editor.add_index(index=index, model=Article)
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with connection.cursor() as cursor:
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self.assertIn(
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index.name,
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connection.introspection.get_constraints(
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cursor=cursor,
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table_name=Article._meta.db_table,
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),
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)
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editor.remove_index(index=index, model=Article)
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def test_boolean_restriction_partial(self):
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with connection.schema_editor() as editor:
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index = Index(
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name="published_index",
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fields=["published"],
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condition=Q(published=True),
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)
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self.assertIn(
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"WHERE %s" % editor.quote_name("published"),
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str(index.create_sql(Article, schema_editor=editor)),
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)
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editor.add_index(index=index, model=Article)
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with connection.cursor() as cursor:
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self.assertIn(
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index.name,
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connection.introspection.get_constraints(
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cursor=cursor,
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table_name=Article._meta.db_table,
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),
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)
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editor.remove_index(index=index, model=Article)
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@skipUnlessDBFeature("supports_functions_in_partial_indexes")
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def test_multiple_conditions(self):
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with connection.schema_editor() as editor:
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index = Index(
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name="recent_article_idx",
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fields=["pub_date", "headline"],
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condition=(
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Q(
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pub_date__gt=datetime.datetime(
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year=2015,
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month=1,
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day=1,
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tzinfo=timezone.get_current_timezone(),
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)
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)
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& Q(headline__contains="China")
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),
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)
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sql = str(index.create_sql(Article, schema_editor=editor))
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where = sql.find("WHERE")
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self.assertIn("WHERE (%s" % editor.quote_name("pub_date"), sql)
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# Because each backend has different syntax for the operators,
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# check ONLY the occurrence of headline in the SQL.
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self.assertGreater(sql.rfind("headline"), where)
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editor.add_index(index=index, model=Article)
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with connection.cursor() as cursor:
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self.assertIn(
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index.name,
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connection.introspection.get_constraints(
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cursor=cursor,
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table_name=Article._meta.db_table,
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),
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)
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editor.remove_index(index=index, model=Article)
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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)),
|
|
)
|