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