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django/tests/regressiontests/test_utils/tests_25.py

29 lines
782 B
Python

from __future__ import with_statement
from django.test import TestCase
from models import Person
class AssertNumQueriesTests(TestCase):
def test_simple(self):
with self.assertNumQueries(0):
pass
with self.assertNumQueries(1):
Person.objects.count()
with self.assertNumQueries(2):
Person.objects.count()
Person.objects.count()
def test_failure(self):
with self.assertRaises(AssertionError) as exc_info:
with self.assertNumQueries(2):
Person.objects.count()
self.assertIn("1 queries executed, 2 expected", str(exc_info.exception))
with self.assertRaises(TypeError):
with self.assertNumQueries(4000):
raise TypeError