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django/tests/backends/oracle/test_introspection.py
2023-06-27 13:50:42 +02:00

87 lines
3.6 KiB
Python

import unittest
from django.db import connection
from django.test import TransactionTestCase, skipUnlessDBFeature
from ..models import Person, Square
@unittest.skipUnless(connection.vendor == "oracle", "Oracle tests")
class DatabaseSequenceTests(TransactionTestCase):
available_apps = []
def test_get_sequences(self):
with connection.cursor() as cursor:
seqs = connection.introspection.get_sequences(
cursor, Square._meta.db_table, Square._meta.local_fields
)
self.assertEqual(len(seqs), 1)
self.assertIsNotNone(seqs[0]["name"])
self.assertEqual(seqs[0]["table"], Square._meta.db_table)
self.assertEqual(seqs[0]["column"], "id")
def test_get_sequences_manually_created_index(self):
with connection.cursor() as cursor:
with connection.schema_editor() as editor:
editor._drop_identity(Square._meta.db_table, "id")
seqs = connection.introspection.get_sequences(
cursor, Square._meta.db_table, Square._meta.local_fields
)
self.assertEqual(
seqs, [{"table": Square._meta.db_table, "column": "id"}]
)
# Recreate model, because adding identity is impossible.
editor.delete_model(Square)
editor.create_model(Square)
@skipUnlessDBFeature("supports_collation_on_charfield")
def test_get_table_description_view_default_collation(self):
person_table = connection.introspection.identifier_converter(
Person._meta.db_table
)
first_name_column = connection.ops.quote_name(
Person._meta.get_field("first_name").column
)
person_view = connection.introspection.identifier_converter("TEST_PERSON_VIEW")
with connection.cursor() as cursor:
cursor.execute(
f"CREATE VIEW {person_view} "
f"AS SELECT {first_name_column} FROM {person_table}"
)
try:
columns = connection.introspection.get_table_description(
cursor, person_view
)
self.assertEqual(len(columns), 1)
self.assertIsNone(columns[0].collation)
finally:
cursor.execute(f"DROP VIEW {person_view}")
@skipUnlessDBFeature("supports_collation_on_charfield")
def test_get_table_description_materialized_view_non_default_collation(self):
person_table = connection.introspection.identifier_converter(
Person._meta.db_table
)
first_name_column = connection.ops.quote_name(
Person._meta.get_field("first_name").column
)
person_mview = connection.introspection.identifier_converter(
"TEST_PERSON_MVIEW"
)
collation = connection.features.test_collations.get("ci")
with connection.cursor() as cursor:
cursor.execute(
f"CREATE MATERIALIZED VIEW {person_mview} "
f"DEFAULT COLLATION {collation} "
f"AS SELECT {first_name_column} FROM {person_table}"
)
try:
columns = connection.introspection.get_table_description(
cursor, person_mview
)
self.assertEqual(len(columns), 1)
self.assertIsNotNone(columns[0].collation)
self.assertNotEqual(columns[0].collation, collation)
finally:
cursor.execute(f"DROP MATERIALIZED VIEW {person_mview}")