mirror of
https://github.com/django/django.git
synced 2024-12-01 15:42:04 +01:00
315357ad25
Prior to this change foreign key constraint references could be left pointing at tables dropped during operations simulating unsupported table alterations because of an unexpected failure to disable foreign key constraint checks. SQLite3 does not allow disabling such checks while in a transaction so they must be disabled beforehand. Thanks ezaquarii for the report and Carlton and Tim for the review.
466 lines
18 KiB
Python
466 lines
18 KiB
Python
"""
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Tests for django test runner
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"""
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import unittest
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from unittest import mock
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from admin_scripts.tests import AdminScriptTestCase
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from django import db
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from django.conf import settings
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from django.core.exceptions import ImproperlyConfigured
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from django.core.management import call_command
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from django.core.management.base import SystemCheckError
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from django.test import TransactionTestCase, skipUnlessDBFeature, testcases
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from django.test.runner import DiscoverRunner
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from django.test.testcases import connections_support_transactions
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from django.test.utils import dependency_ordered
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from .models import B, Person, Through
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class DependencyOrderingTests(unittest.TestCase):
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def test_simple_dependencies(self):
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raw = [
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('s1', ('s1_db', ['alpha'])),
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('s2', ('s2_db', ['bravo'])),
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('s3', ('s3_db', ['charlie'])),
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]
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dependencies = {
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'alpha': ['charlie'],
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'bravo': ['charlie'],
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}
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ordered = dependency_ordered(raw, dependencies=dependencies)
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ordered_sigs = [sig for sig, value in ordered]
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self.assertIn('s1', ordered_sigs)
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self.assertIn('s2', ordered_sigs)
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self.assertIn('s3', ordered_sigs)
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self.assertLess(ordered_sigs.index('s3'), ordered_sigs.index('s1'))
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self.assertLess(ordered_sigs.index('s3'), ordered_sigs.index('s2'))
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def test_chained_dependencies(self):
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raw = [
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('s1', ('s1_db', ['alpha'])),
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('s2', ('s2_db', ['bravo'])),
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('s3', ('s3_db', ['charlie'])),
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]
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dependencies = {
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'alpha': ['bravo'],
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'bravo': ['charlie'],
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}
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ordered = dependency_ordered(raw, dependencies=dependencies)
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ordered_sigs = [sig for sig, value in ordered]
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self.assertIn('s1', ordered_sigs)
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self.assertIn('s2', ordered_sigs)
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self.assertIn('s3', ordered_sigs)
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# Explicit dependencies
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self.assertLess(ordered_sigs.index('s2'), ordered_sigs.index('s1'))
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self.assertLess(ordered_sigs.index('s3'), ordered_sigs.index('s2'))
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# Implied dependencies
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self.assertLess(ordered_sigs.index('s3'), ordered_sigs.index('s1'))
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def test_multiple_dependencies(self):
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raw = [
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('s1', ('s1_db', ['alpha'])),
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('s2', ('s2_db', ['bravo'])),
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('s3', ('s3_db', ['charlie'])),
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('s4', ('s4_db', ['delta'])),
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]
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dependencies = {
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'alpha': ['bravo', 'delta'],
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'bravo': ['charlie'],
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'delta': ['charlie'],
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}
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ordered = dependency_ordered(raw, dependencies=dependencies)
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ordered_sigs = [sig for sig, aliases in ordered]
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self.assertIn('s1', ordered_sigs)
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self.assertIn('s2', ordered_sigs)
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self.assertIn('s3', ordered_sigs)
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self.assertIn('s4', ordered_sigs)
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# Explicit dependencies
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self.assertLess(ordered_sigs.index('s2'), ordered_sigs.index('s1'))
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self.assertLess(ordered_sigs.index('s4'), ordered_sigs.index('s1'))
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self.assertLess(ordered_sigs.index('s3'), ordered_sigs.index('s2'))
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self.assertLess(ordered_sigs.index('s3'), ordered_sigs.index('s4'))
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# Implicit dependencies
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self.assertLess(ordered_sigs.index('s3'), ordered_sigs.index('s1'))
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def test_circular_dependencies(self):
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raw = [
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('s1', ('s1_db', ['alpha'])),
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('s2', ('s2_db', ['bravo'])),
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]
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dependencies = {
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'bravo': ['alpha'],
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'alpha': ['bravo'],
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}
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with self.assertRaises(ImproperlyConfigured):
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dependency_ordered(raw, dependencies=dependencies)
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def test_own_alias_dependency(self):
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raw = [
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('s1', ('s1_db', ['alpha', 'bravo']))
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]
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dependencies = {
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'alpha': ['bravo']
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}
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with self.assertRaises(ImproperlyConfigured):
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dependency_ordered(raw, dependencies=dependencies)
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# reordering aliases shouldn't matter
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raw = [
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('s1', ('s1_db', ['bravo', 'alpha']))
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]
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with self.assertRaises(ImproperlyConfigured):
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dependency_ordered(raw, dependencies=dependencies)
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class MockTestRunner:
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def __init__(self, *args, **kwargs):
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pass
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MockTestRunner.run_tests = mock.Mock(return_value=[])
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class ManageCommandTests(unittest.TestCase):
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def test_custom_test_runner(self):
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call_command('test', 'sites',
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testrunner='test_runner.tests.MockTestRunner')
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MockTestRunner.run_tests.assert_called_with(('sites',))
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def test_bad_test_runner(self):
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with self.assertRaises(AttributeError):
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call_command('test', 'sites', testrunner='test_runner.NonexistentRunner')
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class CustomTestRunnerOptionsSettingsTests(AdminScriptTestCase):
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"""
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Custom runners can add command line arguments. The runner is specified
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through a settings file.
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"""
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def setUp(self):
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settings = {
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'TEST_RUNNER': '\'test_runner.runner.CustomOptionsTestRunner\'',
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}
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self.write_settings('settings.py', sdict=settings)
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def tearDown(self):
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self.remove_settings('settings.py')
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def test_default_options(self):
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args = ['test', '--settings=test_project.settings']
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out, err = self.run_django_admin(args)
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self.assertNoOutput(err)
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self.assertOutput(out, '1:2:3')
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def test_default_and_given_options(self):
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args = ['test', '--settings=test_project.settings', '--option_b=foo']
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out, err = self.run_django_admin(args)
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self.assertNoOutput(err)
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self.assertOutput(out, '1:foo:3')
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def test_option_name_and_value_separated(self):
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args = ['test', '--settings=test_project.settings', '--option_b', 'foo']
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out, err = self.run_django_admin(args)
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self.assertNoOutput(err)
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self.assertOutput(out, '1:foo:3')
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def test_all_options_given(self):
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args = ['test', '--settings=test_project.settings', '--option_a=bar',
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'--option_b=foo', '--option_c=31337']
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out, err = self.run_django_admin(args)
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self.assertNoOutput(err)
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self.assertOutput(out, 'bar:foo:31337')
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class CustomTestRunnerOptionsCmdlineTests(AdminScriptTestCase):
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"""
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Custom runners can add command line arguments when the runner is specified
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using --testrunner.
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"""
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def setUp(self):
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self.write_settings('settings.py')
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def tearDown(self):
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self.remove_settings('settings.py')
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def test_testrunner_option(self):
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args = [
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'test', '--testrunner', 'test_runner.runner.CustomOptionsTestRunner',
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'--option_a=bar', '--option_b=foo', '--option_c=31337'
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]
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out, err = self.run_django_admin(args, 'test_project.settings')
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self.assertNoOutput(err)
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self.assertOutput(out, 'bar:foo:31337')
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def test_testrunner_equals(self):
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args = [
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'test', '--testrunner=test_runner.runner.CustomOptionsTestRunner',
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'--option_a=bar', '--option_b=foo', '--option_c=31337'
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]
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out, err = self.run_django_admin(args, 'test_project.settings')
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self.assertNoOutput(err)
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self.assertOutput(out, 'bar:foo:31337')
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def test_no_testrunner(self):
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args = ['test', '--testrunner']
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out, err = self.run_django_admin(args, 'test_project.settings')
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self.assertIn('usage', err)
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self.assertNotIn('Traceback', err)
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self.assertNoOutput(out)
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class Ticket17477RegressionTests(AdminScriptTestCase):
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def setUp(self):
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self.write_settings('settings.py')
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def tearDown(self):
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self.remove_settings('settings.py')
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def test_ticket_17477(self):
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"""'manage.py help test' works after r16352."""
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args = ['help', 'test']
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out, err = self.run_manage(args)
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self.assertNoOutput(err)
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class Sqlite3InMemoryTestDbs(TransactionTestCase):
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multi_db = True
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available_apps = ['test_runner']
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@unittest.skipUnless(all(db.connections[conn].vendor == 'sqlite' for conn in db.connections),
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"This is an sqlite-specific issue")
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def test_transaction_support(self):
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"""Ticket #16329: sqlite3 in-memory test databases"""
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for option_key, option_value in (
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('NAME', ':memory:'), ('TEST', {'NAME': ':memory:'})):
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tested_connections = db.ConnectionHandler({
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'default': {
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'ENGINE': 'django.db.backends.sqlite3',
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option_key: option_value,
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},
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'other': {
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'ENGINE': 'django.db.backends.sqlite3',
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option_key: option_value,
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},
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})
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with mock.patch('django.db.connections', new=tested_connections):
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with mock.patch('django.test.testcases.connections', new=tested_connections):
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other = tested_connections['other']
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DiscoverRunner(verbosity=0).setup_databases()
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msg = ("DATABASES setting '%s' option set to sqlite3's ':memory:' value "
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"shouldn't interfere with transaction support detection." % option_key)
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# Transaction support should be properly initialized for the 'other' DB
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self.assertTrue(other.features.supports_transactions, msg)
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# And all the DBs should report that they support transactions
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self.assertTrue(connections_support_transactions(), msg)
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class DummyBackendTest(unittest.TestCase):
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def test_setup_databases(self):
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"""
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setup_databases() doesn't fail with dummy database backend.
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"""
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tested_connections = db.ConnectionHandler({})
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with mock.patch('django.test.utils.connections', new=tested_connections):
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runner_instance = DiscoverRunner(verbosity=0)
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old_config = runner_instance.setup_databases()
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runner_instance.teardown_databases(old_config)
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class AliasedDefaultTestSetupTest(unittest.TestCase):
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def test_setup_aliased_default_database(self):
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"""
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setup_datebases() doesn't fail when 'default' is aliased
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"""
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tested_connections = db.ConnectionHandler({
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'default': {
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'NAME': 'dummy'
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},
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'aliased': {
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'NAME': 'dummy'
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}
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})
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with mock.patch('django.test.utils.connections', new=tested_connections):
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runner_instance = DiscoverRunner(verbosity=0)
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old_config = runner_instance.setup_databases()
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runner_instance.teardown_databases(old_config)
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class SetupDatabasesTests(unittest.TestCase):
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def setUp(self):
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self.runner_instance = DiscoverRunner(verbosity=0)
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def test_setup_aliased_databases(self):
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tested_connections = db.ConnectionHandler({
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'default': {
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'ENGINE': 'django.db.backends.dummy',
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'NAME': 'dbname',
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},
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'other': {
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'ENGINE': 'django.db.backends.dummy',
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'NAME': 'dbname',
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}
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})
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with mock.patch('django.db.backends.dummy.base.DatabaseWrapper.creation_class') as mocked_db_creation:
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with mock.patch('django.test.utils.connections', new=tested_connections):
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old_config = self.runner_instance.setup_databases()
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self.runner_instance.teardown_databases(old_config)
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mocked_db_creation.return_value.destroy_test_db.assert_called_once_with('dbname', 0, False)
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def test_destroy_test_db_restores_db_name(self):
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tested_connections = db.ConnectionHandler({
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'default': {
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'ENGINE': settings.DATABASES[db.DEFAULT_DB_ALIAS]["ENGINE"],
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'NAME': 'xxx_test_database',
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},
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})
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# Using the real current name as old_name to not mess with the test suite.
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old_name = settings.DATABASES[db.DEFAULT_DB_ALIAS]["NAME"]
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with mock.patch('django.db.connections', new=tested_connections):
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tested_connections['default'].creation.destroy_test_db(old_name, verbosity=0, keepdb=True)
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self.assertEqual(tested_connections['default'].settings_dict["NAME"], old_name)
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def test_serialization(self):
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tested_connections = db.ConnectionHandler({
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'default': {
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'ENGINE': 'django.db.backends.dummy',
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},
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})
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with mock.patch('django.db.backends.dummy.base.DatabaseWrapper.creation_class') as mocked_db_creation:
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with mock.patch('django.test.utils.connections', new=tested_connections):
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self.runner_instance.setup_databases()
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mocked_db_creation.return_value.create_test_db.assert_called_once_with(
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verbosity=0, autoclobber=False, serialize=True, keepdb=False
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)
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def test_serialized_off(self):
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tested_connections = db.ConnectionHandler({
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'default': {
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'ENGINE': 'django.db.backends.dummy',
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'TEST': {'SERIALIZE': False},
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},
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})
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with mock.patch('django.db.backends.dummy.base.DatabaseWrapper.creation_class') as mocked_db_creation:
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with mock.patch('django.test.utils.connections', new=tested_connections):
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self.runner_instance.setup_databases()
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mocked_db_creation.return_value.create_test_db.assert_called_once_with(
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verbosity=0, autoclobber=False, serialize=False, keepdb=False
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)
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@skipUnlessDBFeature('supports_sequence_reset')
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class AutoIncrementResetTest(TransactionTestCase):
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"""
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Creating the same models in different test methods receive the same PK
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values since the sequences are reset before each test method.
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"""
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available_apps = ['test_runner']
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reset_sequences = True
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def _test(self):
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# Regular model
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p = Person.objects.create(first_name='Jack', last_name='Smith')
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self.assertEqual(p.pk, 1)
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# Auto-created many-to-many through model
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p.friends.add(Person.objects.create(first_name='Jacky', last_name='Smith'))
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self.assertEqual(p.friends.through.objects.first().pk, 1)
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# Many-to-many through model
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b = B.objects.create()
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t = Through.objects.create(person=p, b=b)
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self.assertEqual(t.pk, 1)
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def test_autoincrement_reset1(self):
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self._test()
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def test_autoincrement_reset2(self):
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self._test()
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class EmptyDefaultDatabaseTest(unittest.TestCase):
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def test_empty_default_database(self):
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"""
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An empty default database in settings does not raise an ImproperlyConfigured
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error when running a unit test that does not use a database.
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"""
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testcases.connections = db.ConnectionHandler({'default': {}})
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connection = testcases.connections[db.utils.DEFAULT_DB_ALIAS]
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self.assertEqual(connection.settings_dict['ENGINE'], 'django.db.backends.dummy')
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connections_support_transactions()
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class RunTestsExceptionHandlingTests(unittest.TestCase):
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def test_run_checks_raises(self):
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"""
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Teardown functions are run when run_checks() raises SystemCheckError.
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"""
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with mock.patch('django.test.runner.DiscoverRunner.setup_test_environment'), \
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mock.patch('django.test.runner.DiscoverRunner.setup_databases'), \
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mock.patch('django.test.runner.DiscoverRunner.build_suite'), \
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mock.patch('django.test.runner.DiscoverRunner.run_checks', side_effect=SystemCheckError), \
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mock.patch('django.test.runner.DiscoverRunner.teardown_databases') as teardown_databases, \
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mock.patch('django.test.runner.DiscoverRunner.teardown_test_environment') as teardown_test_environment:
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runner = DiscoverRunner(verbosity=0, interactive=False)
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with self.assertRaises(SystemCheckError):
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runner.run_tests(['test_runner_apps.sample.tests_sample.TestDjangoTestCase'])
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self.assertTrue(teardown_databases.called)
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self.assertTrue(teardown_test_environment.called)
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def test_run_checks_raises_and_teardown_raises(self):
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"""
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SystemCheckError is surfaced when run_checks() raises SystemCheckError
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and teardown databases() raises ValueError.
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"""
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with mock.patch('django.test.runner.DiscoverRunner.setup_test_environment'), \
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mock.patch('django.test.runner.DiscoverRunner.setup_databases'), \
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mock.patch('django.test.runner.DiscoverRunner.build_suite'), \
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mock.patch('django.test.runner.DiscoverRunner.run_checks', side_effect=SystemCheckError), \
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mock.patch('django.test.runner.DiscoverRunner.teardown_databases', side_effect=ValueError) \
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as teardown_databases, \
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mock.patch('django.test.runner.DiscoverRunner.teardown_test_environment') as teardown_test_environment:
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runner = DiscoverRunner(verbosity=0, interactive=False)
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with self.assertRaises(SystemCheckError):
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runner.run_tests(['test_runner_apps.sample.tests_sample.TestDjangoTestCase'])
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self.assertTrue(teardown_databases.called)
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self.assertFalse(teardown_test_environment.called)
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def test_run_checks_passes_and_teardown_raises(self):
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"""
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Exceptions on teardown are surfaced if no exceptions happen during
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run_checks().
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"""
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with mock.patch('django.test.runner.DiscoverRunner.setup_test_environment'), \
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mock.patch('django.test.runner.DiscoverRunner.setup_databases'), \
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mock.patch('django.test.runner.DiscoverRunner.build_suite'), \
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mock.patch('django.test.runner.DiscoverRunner.run_checks'), \
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mock.patch('django.test.runner.DiscoverRunner.teardown_databases', side_effect=ValueError) \
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as teardown_databases, \
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mock.patch('django.test.runner.DiscoverRunner.teardown_test_environment') as teardown_test_environment:
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runner = DiscoverRunner(verbosity=0, interactive=False)
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with self.assertRaises(ValueError):
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# Suppress the output when running TestDjangoTestCase.
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with mock.patch('sys.stderr'):
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runner.run_tests(['test_runner_apps.sample.tests_sample.TestDjangoTestCase'])
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self.assertTrue(teardown_databases.called)
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self.assertFalse(teardown_test_environment.called)
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