mirror of
https://github.com/django/django.git
synced 2024-12-24 01:55:49 +00:00
638 lines
24 KiB
Python
638 lines
24 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 (
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SimpleTestCase, TransactionTestCase, skipUnlessDBFeature,
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)
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from django.test.runner import DiscoverRunner, reorder_tests
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from django.test.testcases import connections_support_transactions
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from django.test.utils import (
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captured_stderr, dependency_ordered, get_unique_databases_and_mirrors,
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iter_test_cases,
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)
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from django.utils.deprecation import RemovedInDjango50Warning
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from .models import B, Person, Through
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class MySuite:
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def __init__(self):
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self.tests = []
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def addTest(self, test):
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self.tests.append(test)
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def __iter__(self):
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yield from self.tests
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class TestSuiteTests(unittest.TestCase):
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def build_test_suite(self, test_classes, suite=None, suite_class=None):
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if suite_class is None:
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suite_class = unittest.TestSuite
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if suite is None:
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suite = suite_class()
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loader = unittest.defaultTestLoader
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for test_class in test_classes:
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tests = loader.loadTestsFromTestCase(test_class)
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subsuite = suite_class()
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# Only use addTest() to simplify testing a custom TestSuite.
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for test in tests:
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subsuite.addTest(test)
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suite.addTest(subsuite)
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return suite
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def make_test_suite(self, suite=None, suite_class=None):
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class Tests1(unittest.TestCase):
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def test1(self):
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pass
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def test2(self):
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pass
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class Tests2(unittest.TestCase):
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def test1(self):
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pass
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def test2(self):
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pass
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return self.build_test_suite(
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(Tests1, Tests2),
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suite=suite,
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suite_class=suite_class,
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)
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def assertTestNames(self, tests, expected):
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# Each test.id() has a form like the following:
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# "test_runner.tests.IterTestCasesTests.test_iter_test_cases.<locals>.Tests1.test1".
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# It suffices to check only the last two parts.
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names = ['.'.join(test.id().split('.')[-2:]) for test in tests]
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self.assertEqual(names, expected)
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def test_iter_test_cases_basic(self):
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suite = self.make_test_suite()
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tests = iter_test_cases(suite)
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self.assertTestNames(tests, expected=[
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'Tests1.test1', 'Tests1.test2', 'Tests2.test1', 'Tests2.test2',
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])
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def test_iter_test_cases_iterable_of_tests(self):
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class Tests(unittest.TestCase):
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def test1(self):
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pass
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def test2(self):
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pass
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tests = list(unittest.defaultTestLoader.loadTestsFromTestCase(Tests))
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actual_tests = iter_test_cases(tests)
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self.assertTestNames(actual_tests, expected=[
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'Tests.test1', 'Tests.test2',
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])
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def test_iter_test_cases_custom_test_suite_class(self):
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suite = self.make_test_suite(suite_class=MySuite)
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tests = iter_test_cases(suite)
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self.assertTestNames(tests, expected=[
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'Tests1.test1', 'Tests1.test2', 'Tests2.test1', 'Tests2.test2',
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])
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def test_iter_test_cases_mixed_test_suite_classes(self):
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suite = self.make_test_suite(suite=MySuite())
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child_suite = list(suite)[0]
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self.assertNotIsInstance(child_suite, MySuite)
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tests = list(iter_test_cases(suite))
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self.assertEqual(len(tests), 4)
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self.assertNotIsInstance(tests[0], unittest.TestSuite)
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def test_reorder_tests_reverse_with_duplicates(self):
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class Tests1(unittest.TestCase):
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def test1(self):
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pass
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class Tests2(unittest.TestCase):
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def test2(self):
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pass
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def test3(self):
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pass
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suite = self.build_test_suite((Tests1, Tests2))
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subsuite = list(suite)[0]
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suite.addTest(subsuite)
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tests = list(iter_test_cases(suite))
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self.assertTestNames(tests, expected=[
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'Tests1.test1', 'Tests2.test2', 'Tests2.test3', 'Tests1.test1',
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])
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reordered_tests = reorder_tests(tests, classes=[])
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self.assertTestNames(reordered_tests, expected=[
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'Tests1.test1', 'Tests2.test2', 'Tests2.test3',
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])
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reordered_tests = reorder_tests(tests, classes=[], reverse=True)
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self.assertTestNames(reordered_tests, expected=[
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'Tests2.test3', 'Tests2.test2', 'Tests1.test1',
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])
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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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def test_time_recorded(self):
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with captured_stderr() as stderr:
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call_command('test', '--timing', 'sites', testrunner='test_runner.tests.MockTestRunner')
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self.assertIn('Total run took', stderr.getvalue())
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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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super().setUp()
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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 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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super().setUp()
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self.write_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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super().setUp()
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self.write_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 SQLiteInMemoryTestDbs(TransactionTestCase):
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available_apps = ['test_runner']
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databases = {'default', 'other'}
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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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# Assert connections mocking is appropriately applied by preventing
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# any attempts at calling create_test_db on the global connection
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# objects.
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for connection in db.connections.all():
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create_test_db = mock.patch.object(
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connection.creation,
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'create_test_db',
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side_effect=AssertionError("Global connection object shouldn't be manipulated.")
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)
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create_test_db.start()
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self.addCleanup(create_test_db.stop)
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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.test.utils.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 = (
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"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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)
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# Transaction support is 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 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_databases() 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(SimpleTestCase):
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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_setup_test_database_aliases(self):
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"""
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The default database must be the first because data migrations
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use the default alias by default.
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"""
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tested_connections = db.ConnectionHandler({
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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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'default': {
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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.test.utils.connections', new=tested_connections):
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test_databases, _ = get_unique_databases_and_mirrors()
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self.assertEqual(
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test_databases,
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{
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('', '', 'django.db.backends.dummy', 'test_dbname'): (
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'dbname',
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['default', 'other'],
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),
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},
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)
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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)
|
|
|
|
def test_serialization(self):
|
|
tested_connections = db.ConnectionHandler({
|
|
'default': {
|
|
'ENGINE': 'django.db.backends.dummy',
|
|
},
|
|
})
|
|
with mock.patch('django.db.backends.dummy.base.DatabaseWrapper.creation_class') as mocked_db_creation:
|
|
with mock.patch('django.test.utils.connections', new=tested_connections):
|
|
self.runner_instance.setup_databases()
|
|
mocked_db_creation.return_value.create_test_db.assert_called_once_with(
|
|
verbosity=0, autoclobber=False, serialize=True, keepdb=False
|
|
)
|
|
|
|
def test_serialized_off(self):
|
|
tested_connections = db.ConnectionHandler({
|
|
'default': {
|
|
'ENGINE': 'django.db.backends.dummy',
|
|
'TEST': {'SERIALIZE': False},
|
|
},
|
|
})
|
|
msg = (
|
|
'The SERIALIZE test database setting is deprecated as it can be '
|
|
'inferred from the TestCase/TransactionTestCase.databases that '
|
|
'enable the serialized_rollback feature.'
|
|
)
|
|
with mock.patch('django.db.backends.dummy.base.DatabaseWrapper.creation_class') as mocked_db_creation:
|
|
with mock.patch('django.test.utils.connections', new=tested_connections):
|
|
with self.assertWarnsMessage(RemovedInDjango50Warning, msg):
|
|
self.runner_instance.setup_databases()
|
|
mocked_db_creation.return_value.create_test_db.assert_called_once_with(
|
|
verbosity=0, autoclobber=False, serialize=False, keepdb=False
|
|
)
|
|
|
|
|
|
@skipUnlessDBFeature('supports_sequence_reset')
|
|
class AutoIncrementResetTest(TransactionTestCase):
|
|
"""
|
|
Creating the same models in different test methods receive the same PK
|
|
values since the sequences are reset before each test method.
|
|
"""
|
|
|
|
available_apps = ['test_runner']
|
|
|
|
reset_sequences = True
|
|
|
|
def _test(self):
|
|
# Regular model
|
|
p = Person.objects.create(first_name='Jack', last_name='Smith')
|
|
self.assertEqual(p.pk, 1)
|
|
# Auto-created many-to-many through model
|
|
p.friends.add(Person.objects.create(first_name='Jacky', last_name='Smith'))
|
|
self.assertEqual(p.friends.through.objects.first().pk, 1)
|
|
# Many-to-many through model
|
|
b = B.objects.create()
|
|
t = Through.objects.create(person=p, b=b)
|
|
self.assertEqual(t.pk, 1)
|
|
|
|
def test_autoincrement_reset1(self):
|
|
self._test()
|
|
|
|
def test_autoincrement_reset2(self):
|
|
self._test()
|
|
|
|
|
|
class EmptyDefaultDatabaseTest(unittest.TestCase):
|
|
def test_empty_default_database(self):
|
|
"""
|
|
An empty default database in settings does not raise an ImproperlyConfigured
|
|
error when running a unit test that does not use a database.
|
|
"""
|
|
tested_connections = db.ConnectionHandler({'default': {}})
|
|
with mock.patch('django.db.connections', new=tested_connections):
|
|
connection = tested_connections[db.utils.DEFAULT_DB_ALIAS]
|
|
self.assertEqual(connection.settings_dict['ENGINE'], 'django.db.backends.dummy')
|
|
connections_support_transactions()
|
|
|
|
|
|
class RunTestsExceptionHandlingTests(unittest.TestCase):
|
|
def test_run_checks_raises(self):
|
|
"""
|
|
Teardown functions are run when run_checks() raises SystemCheckError.
|
|
"""
|
|
with mock.patch('django.test.runner.DiscoverRunner.setup_test_environment'), \
|
|
mock.patch('django.test.runner.DiscoverRunner.setup_databases'), \
|
|
mock.patch('django.test.runner.DiscoverRunner.build_suite'), \
|
|
mock.patch('django.test.runner.DiscoverRunner.run_checks', side_effect=SystemCheckError), \
|
|
mock.patch('django.test.runner.DiscoverRunner.teardown_databases') as teardown_databases, \
|
|
mock.patch('django.test.runner.DiscoverRunner.teardown_test_environment') as teardown_test_environment:
|
|
runner = DiscoverRunner(verbosity=0, interactive=False)
|
|
with self.assertRaises(SystemCheckError):
|
|
runner.run_tests(['test_runner_apps.sample.tests_sample.TestDjangoTestCase'])
|
|
self.assertTrue(teardown_databases.called)
|
|
self.assertTrue(teardown_test_environment.called)
|
|
|
|
def test_run_checks_raises_and_teardown_raises(self):
|
|
"""
|
|
SystemCheckError is surfaced when run_checks() raises SystemCheckError
|
|
and teardown databases() raises ValueError.
|
|
"""
|
|
with mock.patch('django.test.runner.DiscoverRunner.setup_test_environment'), \
|
|
mock.patch('django.test.runner.DiscoverRunner.setup_databases'), \
|
|
mock.patch('django.test.runner.DiscoverRunner.build_suite'), \
|
|
mock.patch('django.test.runner.DiscoverRunner.run_checks', side_effect=SystemCheckError), \
|
|
mock.patch('django.test.runner.DiscoverRunner.teardown_databases', side_effect=ValueError) \
|
|
as teardown_databases, \
|
|
mock.patch('django.test.runner.DiscoverRunner.teardown_test_environment') as teardown_test_environment:
|
|
runner = DiscoverRunner(verbosity=0, interactive=False)
|
|
with self.assertRaises(SystemCheckError):
|
|
runner.run_tests(['test_runner_apps.sample.tests_sample.TestDjangoTestCase'])
|
|
self.assertTrue(teardown_databases.called)
|
|
self.assertFalse(teardown_test_environment.called)
|
|
|
|
def test_run_checks_passes_and_teardown_raises(self):
|
|
"""
|
|
Exceptions on teardown are surfaced if no exceptions happen during
|
|
run_checks().
|
|
"""
|
|
with mock.patch('django.test.runner.DiscoverRunner.setup_test_environment'), \
|
|
mock.patch('django.test.runner.DiscoverRunner.setup_databases'), \
|
|
mock.patch('django.test.runner.DiscoverRunner.build_suite'), \
|
|
mock.patch('django.test.runner.DiscoverRunner.run_checks'), \
|
|
mock.patch('django.test.runner.DiscoverRunner.teardown_databases', side_effect=ValueError) \
|
|
as teardown_databases, \
|
|
mock.patch('django.test.runner.DiscoverRunner.teardown_test_environment') as teardown_test_environment:
|
|
runner = DiscoverRunner(verbosity=0, interactive=False)
|
|
with self.assertRaises(ValueError):
|
|
# Suppress the output when running TestDjangoTestCase.
|
|
with mock.patch('sys.stderr'):
|
|
runner.run_tests(['test_runner_apps.sample.tests_sample.TestDjangoTestCase'])
|
|
self.assertTrue(teardown_databases.called)
|
|
self.assertFalse(teardown_test_environment.called)
|