import sys from io import StringIO from django.apps import apps from django.core import checks from django.core.checks import Error, Warning from django.core.checks.messages import CheckMessage from django.core.checks.registry import CheckRegistry from django.core.management import call_command from django.core.management.base import CommandError from django.db import models from django.test import SimpleTestCase from django.test.utils import ( isolate_apps, override_settings, override_system_checks, ) from .models import SimpleModel, my_check class DummyObj: def __repr__(self): return "obj" class SystemCheckFrameworkTests(SimpleTestCase): def test_register_and_run_checks(self): def f(**kwargs): calls[0] += 1 return [1, 2, 3] def f2(**kwargs): return [4] def f3(**kwargs): return [5] calls = [0] # test register as decorator registry = CheckRegistry() registry.register()(f) registry.register("tag1", "tag2")(f2) registry.register("tag2", deploy=True)(f3) # test register as function registry2 = CheckRegistry() registry2.register(f) registry2.register(f2, "tag1", "tag2") registry2.register(f3, "tag2", deploy=True) # check results errors = registry.run_checks() errors2 = registry2.run_checks() self.assertEqual(errors, errors2) self.assertEqual(sorted(errors), [1, 2, 3, 4]) self.assertEqual(calls[0], 2) errors = registry.run_checks(tags=["tag1"]) errors2 = registry2.run_checks(tags=["tag1"]) self.assertEqual(errors, errors2) self.assertEqual(sorted(errors), [4]) errors = registry.run_checks(tags=["tag1", "tag2"], include_deployment_checks=True) errors2 = registry2.run_checks(tags=["tag1", "tag2"], include_deployment_checks=True) self.assertEqual(errors, errors2) self.assertEqual(sorted(errors), [4, 5]) def test_register_no_kwargs_error(self): registry = CheckRegistry() msg = 'Check functions must accept keyword arguments (**kwargs).' with self.assertRaisesMessage(TypeError, msg): @registry.register def no_kwargs(app_configs, databases): pass def test_register_run_checks_non_iterable(self): registry = CheckRegistry() @registry.register def return_non_iterable(**kwargs): return Error('Message') msg = ( 'The function %r did not return a list. All functions registered ' 'with the checks registry must return a list.' % return_non_iterable ) with self.assertRaisesMessage(TypeError, msg): registry.run_checks() class MessageTests(SimpleTestCase): def test_printing(self): e = Error("Message", hint="Hint", obj=DummyObj()) expected = "obj: Message\n\tHINT: Hint" self.assertEqual(str(e), expected) def test_printing_no_hint(self): e = Error("Message", obj=DummyObj()) expected = "obj: Message" self.assertEqual(str(e), expected) def test_printing_no_object(self): e = Error("Message", hint="Hint") expected = "?: Message\n\tHINT: Hint" self.assertEqual(str(e), expected) def test_printing_with_given_id(self): e = Error("Message", hint="Hint", obj=DummyObj(), id="ID") expected = "obj: (ID) Message\n\tHINT: Hint" self.assertEqual(str(e), expected) def test_printing_field_error(self): field = SimpleModel._meta.get_field('field') e = Error("Error", obj=field) expected = "check_framework.SimpleModel.field: Error" self.assertEqual(str(e), expected) def test_printing_model_error(self): e = Error("Error", obj=SimpleModel) expected = "check_framework.SimpleModel: Error" self.assertEqual(str(e), expected) def test_printing_manager_error(self): manager = SimpleModel.manager e = Error("Error", obj=manager) expected = "check_framework.SimpleModel.manager: Error" self.assertEqual(str(e), expected) def test_equal_to_self(self): e = Error("Error", obj=SimpleModel) self.assertEqual(e, e) def test_equal_to_same_constructed_check(self): e1 = Error("Error", obj=SimpleModel) e2 = Error("Error", obj=SimpleModel) self.assertEqual(e1, e2) def test_not_equal_to_different_constructed_check(self): e1 = Error("Error", obj=SimpleModel) e2 = Error("Error2", obj=SimpleModel) self.assertNotEqual(e1, e2) def test_not_equal_to_non_check(self): e = Error("Error", obj=DummyObj()) self.assertNotEqual(e, 'a string') def test_invalid_level(self): msg = 'The first argument should be level.' with self.assertRaisesMessage(TypeError, msg): CheckMessage('ERROR', 'Message') def simple_system_check(**kwargs): simple_system_check.kwargs = kwargs return [] def tagged_system_check(**kwargs): tagged_system_check.kwargs = kwargs return [checks.Warning('System Check')] tagged_system_check.tags = ['simpletag'] def deployment_system_check(**kwargs): deployment_system_check.kwargs = kwargs return [checks.Warning('Deployment Check')] deployment_system_check.tags = ['deploymenttag'] class CheckCommandTests(SimpleTestCase): def setUp(self): simple_system_check.kwargs = None tagged_system_check.kwargs = None self.old_stdout, self.old_stderr = sys.stdout, sys.stderr sys.stdout, sys.stderr = StringIO(), StringIO() def tearDown(self): sys.stdout, sys.stderr = self.old_stdout, self.old_stderr @override_system_checks([simple_system_check, tagged_system_check]) def test_simple_call(self): call_command('check') self.assertEqual(simple_system_check.kwargs, {'app_configs': None, 'databases': None}) self.assertEqual(tagged_system_check.kwargs, {'app_configs': None, 'databases': None}) @override_system_checks([simple_system_check, tagged_system_check]) def test_given_app(self): call_command('check', 'auth', 'admin') auth_config = apps.get_app_config('auth') admin_config = apps.get_app_config('admin') self.assertEqual(simple_system_check.kwargs, {'app_configs': [auth_config, admin_config], 'databases': None}) self.assertEqual(tagged_system_check.kwargs, {'app_configs': [auth_config, admin_config], 'databases': None}) @override_system_checks([simple_system_check, tagged_system_check]) def test_given_tag(self): call_command('check', tags=['simpletag']) self.assertIsNone(simple_system_check.kwargs) self.assertEqual(tagged_system_check.kwargs, {'app_configs': None, 'databases': None}) @override_system_checks([simple_system_check, tagged_system_check]) def test_invalid_tag(self): msg = 'There is no system check with the "missingtag" tag.' with self.assertRaisesMessage(CommandError, msg): call_command('check', tags=['missingtag']) @override_system_checks([simple_system_check]) def test_list_tags_empty(self): call_command('check', list_tags=True) self.assertEqual('\n', sys.stdout.getvalue()) @override_system_checks([tagged_system_check]) def test_list_tags(self): call_command('check', list_tags=True) self.assertEqual('simpletag\n', sys.stdout.getvalue()) @override_system_checks([tagged_system_check], deployment_checks=[deployment_system_check]) def test_list_deployment_check_omitted(self): call_command('check', list_tags=True) self.assertEqual('simpletag\n', sys.stdout.getvalue()) @override_system_checks([tagged_system_check], deployment_checks=[deployment_system_check]) def test_list_deployment_check_included(self): call_command('check', deploy=True, list_tags=True) self.assertEqual('deploymenttag\nsimpletag\n', sys.stdout.getvalue()) @override_system_checks([tagged_system_check], deployment_checks=[deployment_system_check]) def test_tags_deployment_check_omitted(self): msg = 'There is no system check with the "deploymenttag" tag.' with self.assertRaisesMessage(CommandError, msg): call_command('check', tags=['deploymenttag']) @override_system_checks([tagged_system_check], deployment_checks=[deployment_system_check]) def test_tags_deployment_check_included(self): call_command('check', deploy=True, tags=['deploymenttag']) self.assertIn('Deployment Check', sys.stderr.getvalue()) @override_system_checks([tagged_system_check]) def test_fail_level(self): with self.assertRaises(CommandError): call_command('check', fail_level='WARNING') def custom_error_system_check(app_configs, **kwargs): return [Error('Error', id='myerrorcheck.E001')] def custom_warning_system_check(app_configs, **kwargs): return [Warning('Warning', id='mywarningcheck.E001')] class SilencingCheckTests(SimpleTestCase): def setUp(self): self.old_stdout, self.old_stderr = sys.stdout, sys.stderr self.stdout, self.stderr = StringIO(), StringIO() sys.stdout, sys.stderr = self.stdout, self.stderr def tearDown(self): sys.stdout, sys.stderr = self.old_stdout, self.old_stderr @override_settings(SILENCED_SYSTEM_CHECKS=['myerrorcheck.E001']) @override_system_checks([custom_error_system_check]) def test_silenced_error(self): out = StringIO() err = StringIO() call_command('check', stdout=out, stderr=err) self.assertEqual(out.getvalue(), 'System check identified no issues (1 silenced).\n') self.assertEqual(err.getvalue(), '') @override_settings(SILENCED_SYSTEM_CHECKS=['mywarningcheck.E001']) @override_system_checks([custom_warning_system_check]) def test_silenced_warning(self): out = StringIO() err = StringIO() call_command('check', stdout=out, stderr=err) self.assertEqual(out.getvalue(), 'System check identified no issues (1 silenced).\n') self.assertEqual(err.getvalue(), '') class CheckFrameworkReservedNamesTests(SimpleTestCase): @isolate_apps('check_framework', kwarg_name='apps') @override_system_checks([checks.model_checks.check_all_models]) def test_model_check_method_not_shadowed(self, apps): class ModelWithAttributeCalledCheck(models.Model): check = 42 class ModelWithFieldCalledCheck(models.Model): check = models.IntegerField() class ModelWithRelatedManagerCalledCheck(models.Model): pass class ModelWithDescriptorCalledCheck(models.Model): check = models.ForeignKey(ModelWithRelatedManagerCalledCheck, models.CASCADE) article = models.ForeignKey( ModelWithRelatedManagerCalledCheck, models.CASCADE, related_name='check', ) errors = checks.run_checks(app_configs=apps.get_app_configs()) expected = [ Error( "The 'ModelWithAttributeCalledCheck.check()' class method is " "currently overridden by 42.", obj=ModelWithAttributeCalledCheck, id='models.E020' ), Error( "The 'ModelWithFieldCalledCheck.check()' class method is " "currently overridden by %r." % ModelWithFieldCalledCheck.check, obj=ModelWithFieldCalledCheck, id='models.E020' ), Error( "The 'ModelWithRelatedManagerCalledCheck.check()' class method is " "currently overridden by %r." % ModelWithRelatedManagerCalledCheck.check, obj=ModelWithRelatedManagerCalledCheck, id='models.E020' ), Error( "The 'ModelWithDescriptorCalledCheck.check()' class method is " "currently overridden by %r." % ModelWithDescriptorCalledCheck.check, obj=ModelWithDescriptorCalledCheck, id='models.E020' ), ] self.assertEqual(errors, expected) class ChecksRunDuringTests(SimpleTestCase): def test_registered_check_did_run(self): self.assertTrue(my_check.did_run)