mirror of
https://github.com/django/django.git
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489421b015
Thanks Shai Berger, Tim Graham and Aymeric Augustin for reviews and Renbi Yu for the initial patch.
85 lines
3.9 KiB
Python
85 lines
3.9 KiB
Python
"""Tests for django.db.backends.utils"""
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from decimal import Decimal, Rounded
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from django.db import connection
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from django.db.backends.utils import format_number, truncate_name
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from django.db.utils import NotSupportedError
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from django.test import (
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SimpleTestCase, TransactionTestCase, skipIfDBFeature, skipUnlessDBFeature,
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)
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class TestUtils(SimpleTestCase):
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def test_truncate_name(self):
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self.assertEqual(truncate_name('some_table', 10), 'some_table')
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self.assertEqual(truncate_name('some_long_table', 10), 'some_la38a')
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self.assertEqual(truncate_name('some_long_table', 10, 3), 'some_loa38')
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self.assertEqual(truncate_name('some_long_table'), 'some_long_table')
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# "user"."table" syntax
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self.assertEqual(truncate_name('username"."some_table', 10), 'username"."some_table')
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self.assertEqual(truncate_name('username"."some_long_table', 10), 'username"."some_la38a')
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self.assertEqual(truncate_name('username"."some_long_table', 10, 3), 'username"."some_loa38')
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def test_format_number(self):
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def equal(value, max_d, places, result):
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self.assertEqual(format_number(Decimal(value), max_d, places), result)
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equal('0', 12, 3, '0.000')
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equal('0', 12, 8, '0.00000000')
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equal('1', 12, 9, '1.000000000')
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equal('0.00000000', 12, 8, '0.00000000')
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equal('0.000000004', 12, 8, '0.00000000')
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equal('0.000000008', 12, 8, '0.00000001')
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equal('0.000000000000000000999', 10, 8, '0.00000000')
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equal('0.1234567890', 12, 10, '0.1234567890')
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equal('0.1234567890', 12, 9, '0.123456789')
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equal('0.1234567890', 12, 8, '0.12345679')
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equal('0.1234567890', 12, 5, '0.12346')
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equal('0.1234567890', 12, 3, '0.123')
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equal('0.1234567890', 12, 1, '0.1')
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equal('0.1234567890', 12, 0, '0')
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equal('0.1234567890', None, 0, '0')
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equal('1234567890.1234567890', None, 0, '1234567890')
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equal('1234567890.1234567890', None, 2, '1234567890.12')
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equal('0.1234', 5, None, '0.1234')
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equal('123.12', 5, None, '123.12')
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with self.assertRaises(Rounded):
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equal('0.1234567890', 5, None, '0.12346')
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with self.assertRaises(Rounded):
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equal('1234567890.1234', 5, None, '1234600000')
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class CursorWrapperTests(TransactionTestCase):
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available_apps = []
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def _test_procedure(self, procedure_sql, params, param_types, kparams=None):
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with connection.cursor() as cursor:
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cursor.execute(procedure_sql)
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# Use a new cursor because in MySQL a procedure can't be used in the
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# same cursor in which it was created.
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with connection.cursor() as cursor:
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cursor.callproc('test_procedure', params, kparams)
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with connection.schema_editor() as editor:
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editor.remove_procedure('test_procedure', param_types)
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@skipUnlessDBFeature('create_test_procedure_without_params_sql')
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def test_callproc_without_params(self):
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self._test_procedure(connection.features.create_test_procedure_without_params_sql, [], [])
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@skipUnlessDBFeature('create_test_procedure_with_int_param_sql')
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def test_callproc_with_int_params(self):
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self._test_procedure(connection.features.create_test_procedure_with_int_param_sql, [1], ['INTEGER'])
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@skipUnlessDBFeature('create_test_procedure_with_int_param_sql', 'supports_callproc_kwargs')
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def test_callproc_kparams(self):
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self._test_procedure(connection.features.create_test_procedure_with_int_param_sql, [], ['INTEGER'], {'P_I': 1})
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@skipIfDBFeature('supports_callproc_kwargs')
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def test_unsupported_callproc_kparams_raises_error(self):
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msg = 'Keyword parameters for callproc are not supported on this database backend.'
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with self.assertRaisesMessage(NotSupportedError, msg):
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with connection.cursor() as cursor:
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cursor.callproc('test_procedure', [], {'P_I': 1})
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