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86 lines
3.4 KiB
Python
86 lines
3.4 KiB
Python
import unittest
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from django.db import connection
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from django.db.models.fields import BooleanField, NullBooleanField
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from django.db.utils import DatabaseError
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from django.test import TransactionTestCase
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from ..models import Square
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@unittest.skipUnless(connection.vendor == 'oracle', 'Oracle tests')
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class Tests(unittest.TestCase):
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def test_quote_name(self):
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"""'%' chars are escaped for query execution."""
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name = '"SOME%NAME"'
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quoted_name = connection.ops.quote_name(name)
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self.assertEqual(quoted_name % (), name)
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def test_dbms_session(self):
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"""A stored procedure can be called through a cursor wrapper."""
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with connection.cursor() as cursor:
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cursor.callproc('DBMS_SESSION.SET_IDENTIFIER', ['_django_testing!'])
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def test_cursor_var(self):
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"""Cursor variables can be passed as query parameters."""
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from django.db.backends.oracle.base import Database
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with connection.cursor() as cursor:
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var = cursor.var(Database.STRING)
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cursor.execute("BEGIN %s := 'X'; END; ", [var])
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self.assertEqual(var.getvalue(), 'X')
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def test_client_encoding(self):
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"""Client encoding is set correctly."""
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connection.ensure_connection()
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self.assertEqual(connection.connection.encoding, 'UTF-8')
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self.assertEqual(connection.connection.nencoding, 'UTF-8')
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def test_order_of_nls_parameters(self):
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"""
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An 'almost right' datetime works with configured NLS parameters
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(#18465).
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"""
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with connection.cursor() as cursor:
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query = "select 1 from dual where '1936-12-29 00:00' < sysdate"
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# The query succeeds without errors - pre #18465 this
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# wasn't the case.
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cursor.execute(query)
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self.assertEqual(cursor.fetchone()[0], 1)
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def test_boolean_constraints(self):
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"""Boolean fields have check constraints on their values."""
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for field in (BooleanField(), NullBooleanField()):
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with self.subTest(field=field):
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field.set_attributes_from_name('is_nice')
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self.assertIn('"IS_NICE" IN (0,1)', field.db_check(connection))
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@unittest.skipUnless(connection.vendor == 'oracle', 'Oracle tests')
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class HiddenNoDataFoundExceptionTest(TransactionTestCase):
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available_apps = ['backends']
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def test_hidden_no_data_found_exception(self):
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# "ORA-1403: no data found" exception is hidden by Oracle OCI library
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# when an INSERT statement is used with a RETURNING clause (see #28859).
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with connection.cursor() as cursor:
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# Create trigger that raises "ORA-1403: no data found".
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cursor.execute("""
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CREATE OR REPLACE TRIGGER "TRG_NO_DATA_FOUND"
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AFTER INSERT ON "BACKENDS_SQUARE"
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FOR EACH ROW
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BEGIN
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RAISE NO_DATA_FOUND;
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END;
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""")
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try:
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with self.assertRaisesMessage(DatabaseError, (
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'The database did not return a new row id. Probably "ORA-1403: '
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'no data found" was raised internally but was hidden by the '
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'Oracle OCI library (see https://code.djangoproject.com/ticket/28859).'
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)):
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Square.objects.create(root=2, square=4)
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finally:
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with connection.cursor() as cursor:
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cursor.execute('DROP TRIGGER "TRG_NO_DATA_FOUND"')
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