1517 lines
60 KiB
Python
1517 lines
60 KiB
Python
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import difflib
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import json
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import posixpath
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import sys
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import threading
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import unittest
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import warnings
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from collections import Counter
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from contextlib import contextmanager
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from copy import copy
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from difflib import get_close_matches
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from functools import wraps
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from unittest.util import safe_repr
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from urllib.parse import (
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parse_qsl, unquote, urlencode, urljoin, urlparse, urlsplit, urlunparse,
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)
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from urllib.request import url2pathname
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from django.apps import apps
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from django.conf import settings
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from django.core import mail
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from django.core.exceptions import ImproperlyConfigured, ValidationError
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from django.core.files import locks
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from django.core.handlers.wsgi import WSGIHandler, get_path_info
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from django.core.management import call_command
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from django.core.management.color import no_style
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from django.core.management.sql import emit_post_migrate_signal
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from django.core.servers.basehttp import ThreadedWSGIServer, WSGIRequestHandler
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from django.db import DEFAULT_DB_ALIAS, connection, connections, transaction
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from django.forms.fields import CharField
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from django.http import QueryDict
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from django.http.request import split_domain_port, validate_host
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from django.test.client import Client
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from django.test.html import HTMLParseError, parse_html
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from django.test.signals import setting_changed, template_rendered
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from django.test.utils import (
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CaptureQueriesContext, ContextList, compare_xml, modify_settings,
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override_settings,
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)
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from django.utils.decorators import classproperty
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from django.utils.deprecation import RemovedInDjango31Warning
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from django.views.static import serve
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__all__ = ('TestCase', 'TransactionTestCase',
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'SimpleTestCase', 'skipIfDBFeature', 'skipUnlessDBFeature')
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def to_list(value):
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"""
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Put value into a list if it's not already one. Return an empty list if
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value is None.
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"""
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if value is None:
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value = []
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elif not isinstance(value, list):
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value = [value]
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return value
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def assert_and_parse_html(self, html, user_msg, msg):
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try:
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dom = parse_html(html)
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except HTMLParseError as e:
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standardMsg = '%s\n%s' % (msg, e)
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self.fail(self._formatMessage(user_msg, standardMsg))
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return dom
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class _AssertNumQueriesContext(CaptureQueriesContext):
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def __init__(self, test_case, num, connection):
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self.test_case = test_case
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self.num = num
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super().__init__(connection)
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def __exit__(self, exc_type, exc_value, traceback):
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super().__exit__(exc_type, exc_value, traceback)
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if exc_type is not None:
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return
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executed = len(self)
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self.test_case.assertEqual(
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executed, self.num,
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"%d queries executed, %d expected\nCaptured queries were:\n%s" % (
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executed, self.num,
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'\n'.join(
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'%d. %s' % (i, query['sql']) for i, query in enumerate(self.captured_queries, start=1)
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)
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)
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)
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class _AssertTemplateUsedContext:
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def __init__(self, test_case, template_name):
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self.test_case = test_case
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self.template_name = template_name
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self.rendered_templates = []
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self.rendered_template_names = []
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self.context = ContextList()
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def on_template_render(self, sender, signal, template, context, **kwargs):
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self.rendered_templates.append(template)
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self.rendered_template_names.append(template.name)
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self.context.append(copy(context))
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def test(self):
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return self.template_name in self.rendered_template_names
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def message(self):
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return '%s was not rendered.' % self.template_name
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def __enter__(self):
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template_rendered.connect(self.on_template_render)
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return self
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def __exit__(self, exc_type, exc_value, traceback):
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template_rendered.disconnect(self.on_template_render)
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if exc_type is not None:
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return
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if not self.test():
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message = self.message()
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if self.rendered_templates:
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message += ' Following templates were rendered: %s' % (
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', '.join(self.rendered_template_names)
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)
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else:
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message += ' No template was rendered.'
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self.test_case.fail(message)
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class _AssertTemplateNotUsedContext(_AssertTemplateUsedContext):
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def test(self):
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return self.template_name not in self.rendered_template_names
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def message(self):
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return '%s was rendered.' % self.template_name
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class _DatabaseFailure:
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def __init__(self, wrapped, message):
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self.wrapped = wrapped
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self.message = message
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def __call__(self):
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raise AssertionError(self.message)
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class _SimpleTestCaseDatabasesDescriptor:
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"""Descriptor for SimpleTestCase.allow_database_queries deprecation."""
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def __get__(self, instance, cls=None):
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try:
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allow_database_queries = cls.allow_database_queries
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except AttributeError:
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pass
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else:
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msg = (
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'`SimpleTestCase.allow_database_queries` is deprecated. '
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'Restrict the databases available during the execution of '
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'%s.%s with the `databases` attribute instead.'
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) % (cls.__module__, cls.__qualname__)
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warnings.warn(msg, RemovedInDjango31Warning)
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if allow_database_queries:
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return {DEFAULT_DB_ALIAS}
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return set()
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class SimpleTestCase(unittest.TestCase):
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# The class we'll use for the test client self.client.
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# Can be overridden in derived classes.
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client_class = Client
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_overridden_settings = None
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_modified_settings = None
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databases = _SimpleTestCaseDatabasesDescriptor()
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_disallowed_database_msg = (
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'Database %(operation)s to %(alias)r are not allowed in SimpleTestCase '
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'subclasses. Either subclass TestCase or TransactionTestCase to ensure '
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'proper test isolation or add %(alias)r to %(test)s.databases to silence '
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'this failure.'
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)
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_disallowed_connection_methods = [
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('connect', 'connections'),
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('temporary_connection', 'connections'),
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('cursor', 'queries'),
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('chunked_cursor', 'queries'),
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]
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@classmethod
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def setUpClass(cls):
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super().setUpClass()
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if cls._overridden_settings:
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cls._cls_overridden_context = override_settings(**cls._overridden_settings)
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cls._cls_overridden_context.enable()
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if cls._modified_settings:
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cls._cls_modified_context = modify_settings(cls._modified_settings)
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cls._cls_modified_context.enable()
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cls._add_databases_failures()
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@classmethod
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def _validate_databases(cls):
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if cls.databases == '__all__':
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return frozenset(connections)
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for alias in cls.databases:
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if alias not in connections:
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message = '%s.%s.databases refers to %r which is not defined in settings.DATABASES.' % (
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cls.__module__,
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cls.__qualname__,
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alias,
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)
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close_matches = get_close_matches(alias, list(connections))
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if close_matches:
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message += ' Did you mean %r?' % close_matches[0]
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raise ImproperlyConfigured(message)
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return frozenset(cls.databases)
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@classmethod
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def _add_databases_failures(cls):
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cls.databases = cls._validate_databases()
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for alias in connections:
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if alias in cls.databases:
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continue
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connection = connections[alias]
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for name, operation in cls._disallowed_connection_methods:
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message = cls._disallowed_database_msg % {
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'test': '%s.%s' % (cls.__module__, cls.__qualname__),
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'alias': alias,
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'operation': operation,
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}
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method = getattr(connection, name)
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setattr(connection, name, _DatabaseFailure(method, message))
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@classmethod
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def _remove_databases_failures(cls):
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for alias in connections:
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if alias in cls.databases:
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continue
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connection = connections[alias]
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for name, _ in cls._disallowed_connection_methods:
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method = getattr(connection, name)
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setattr(connection, name, method.wrapped)
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@classmethod
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def tearDownClass(cls):
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cls._remove_databases_failures()
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if hasattr(cls, '_cls_modified_context'):
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cls._cls_modified_context.disable()
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delattr(cls, '_cls_modified_context')
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if hasattr(cls, '_cls_overridden_context'):
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cls._cls_overridden_context.disable()
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delattr(cls, '_cls_overridden_context')
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super().tearDownClass()
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def __call__(self, result=None):
|
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"""
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Wrapper around default __call__ method to perform common Django test
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set up. This means that user-defined Test Cases aren't required to
|
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include a call to super().setUp().
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"""
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testMethod = getattr(self, self._testMethodName)
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skipped = (
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getattr(self.__class__, "__unittest_skip__", False) or
|
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getattr(testMethod, "__unittest_skip__", False)
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)
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if not skipped:
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try:
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self._pre_setup()
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except Exception:
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result.addError(self, sys.exc_info())
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return
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super().__call__(result)
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if not skipped:
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try:
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self._post_teardown()
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except Exception:
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result.addError(self, sys.exc_info())
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return
|
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|
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|
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def _pre_setup(self):
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"""
|
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Perform pre-test setup:
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* Create a test client.
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* Clear the mail test outbox.
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"""
|
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self.client = self.client_class()
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mail.outbox = []
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|
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def _post_teardown(self):
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|
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"""Perform post-test things."""
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pass
|
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|
|
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def settings(self, **kwargs):
|
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|
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"""
|
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|
|
A context manager that temporarily sets a setting and reverts to the
|
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|
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original value when exiting the context.
|
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"""
|
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return override_settings(**kwargs)
|
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|
|
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|
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def modify_settings(self, **kwargs):
|
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|
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"""
|
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|
|
A context manager that temporarily applies changes a list setting and
|
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|
|
reverts back to the original value when exiting the context.
|
||
|
|
"""
|
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|
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return modify_settings(**kwargs)
|
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|
|
|
||
|
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def assertRedirects(self, response, expected_url, status_code=302,
|
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|
|
target_status_code=200, msg_prefix='',
|
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|
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fetch_redirect_response=True):
|
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|
|
"""
|
||
|
|
Assert that a response redirected to a specific URL and that the
|
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|
|
redirect URL can be loaded.
|
||
|
|
|
||
|
|
Won't work for external links since it uses the test client to do a
|
||
|
|
request (use fetch_redirect_response=False to check such links without
|
||
|
|
fetching them).
|
||
|
|
"""
|
||
|
|
if msg_prefix:
|
||
|
|
msg_prefix += ": "
|
||
|
|
|
||
|
|
if hasattr(response, 'redirect_chain'):
|
||
|
|
# The request was a followed redirect
|
||
|
|
self.assertTrue(
|
||
|
|
response.redirect_chain,
|
||
|
|
msg_prefix + "Response didn't redirect as expected: Response code was %d (expected %d)"
|
||
|
|
% (response.status_code, status_code)
|
||
|
|
)
|
||
|
|
|
||
|
|
self.assertEqual(
|
||
|
|
response.redirect_chain[0][1], status_code,
|
||
|
|
msg_prefix + "Initial response didn't redirect as expected: Response code was %d (expected %d)"
|
||
|
|
% (response.redirect_chain[0][1], status_code)
|
||
|
|
)
|
||
|
|
|
||
|
|
url, status_code = response.redirect_chain[-1]
|
||
|
|
scheme, netloc, path, query, fragment = urlsplit(url)
|
||
|
|
|
||
|
|
self.assertEqual(
|
||
|
|
response.status_code, target_status_code,
|
||
|
|
msg_prefix + "Response didn't redirect as expected: Final Response code was %d (expected %d)"
|
||
|
|
% (response.status_code, target_status_code)
|
||
|
|
)
|
||
|
|
|
||
|
|
else:
|
||
|
|
# Not a followed redirect
|
||
|
|
self.assertEqual(
|
||
|
|
response.status_code, status_code,
|
||
|
|
msg_prefix + "Response didn't redirect as expected: Response code was %d (expected %d)"
|
||
|
|
% (response.status_code, status_code)
|
||
|
|
)
|
||
|
|
|
||
|
|
url = response.url
|
||
|
|
scheme, netloc, path, query, fragment = urlsplit(url)
|
||
|
|
|
||
|
|
# Prepend the request path to handle relative path redirects.
|
||
|
|
if not path.startswith('/'):
|
||
|
|
url = urljoin(response.request['PATH_INFO'], url)
|
||
|
|
path = urljoin(response.request['PATH_INFO'], path)
|
||
|
|
|
||
|
|
if fetch_redirect_response:
|
||
|
|
# netloc might be empty, or in cases where Django tests the
|
||
|
|
# HTTP scheme, the convention is for netloc to be 'testserver'.
|
||
|
|
# Trust both as "internal" URLs here.
|
||
|
|
domain, port = split_domain_port(netloc)
|
||
|
|
if domain and not validate_host(domain, settings.ALLOWED_HOSTS):
|
||
|
|
raise ValueError(
|
||
|
|
"The test client is unable to fetch remote URLs (got %s). "
|
||
|
|
"If the host is served by Django, add '%s' to ALLOWED_HOSTS. "
|
||
|
|
"Otherwise, use assertRedirects(..., fetch_redirect_response=False)."
|
||
|
|
% (url, domain)
|
||
|
|
)
|
||
|
|
redirect_response = response.client.get(path, QueryDict(query), secure=(scheme == 'https'))
|
||
|
|
|
||
|
|
# Get the redirection page, using the same client that was used
|
||
|
|
# to obtain the original response.
|
||
|
|
self.assertEqual(
|
||
|
|
redirect_response.status_code, target_status_code,
|
||
|
|
msg_prefix + "Couldn't retrieve redirection page '%s': response code was %d (expected %d)"
|
||
|
|
% (path, redirect_response.status_code, target_status_code)
|
||
|
|
)
|
||
|
|
|
||
|
|
self.assertURLEqual(
|
||
|
|
url, expected_url,
|
||
|
|
msg_prefix + "Response redirected to '%s', expected '%s'" % (url, expected_url)
|
||
|
|
)
|
||
|
|
|
||
|
|
def assertURLEqual(self, url1, url2, msg_prefix=''):
|
||
|
|
"""
|
||
|
|
Assert that two URLs are the same, ignoring the order of query string
|
||
|
|
parameters except for parameters with the same name.
|
||
|
|
|
||
|
|
For example, /path/?x=1&y=2 is equal to /path/?y=2&x=1, but
|
||
|
|
/path/?a=1&a=2 isn't equal to /path/?a=2&a=1.
|
||
|
|
"""
|
||
|
|
def normalize(url):
|
||
|
|
"""Sort the URL's query string parameters."""
|
||
|
|
url = str(url) # Coerce reverse_lazy() URLs.
|
||
|
|
scheme, netloc, path, params, query, fragment = urlparse(url)
|
||
|
|
query_parts = sorted(parse_qsl(query))
|
||
|
|
return urlunparse((scheme, netloc, path, params, urlencode(query_parts), fragment))
|
||
|
|
|
||
|
|
self.assertEqual(
|
||
|
|
normalize(url1), normalize(url2),
|
||
|
|
msg_prefix + "Expected '%s' to equal '%s'." % (url1, url2)
|
||
|
|
)
|
||
|
|
|
||
|
|
def _assert_contains(self, response, text, status_code, msg_prefix, html):
|
||
|
|
# If the response supports deferred rendering and hasn't been rendered
|
||
|
|
# yet, then ensure that it does get rendered before proceeding further.
|
||
|
|
if hasattr(response, 'render') and callable(response.render) and not response.is_rendered:
|
||
|
|
response.render()
|
||
|
|
|
||
|
|
if msg_prefix:
|
||
|
|
msg_prefix += ": "
|
||
|
|
|
||
|
|
self.assertEqual(
|
||
|
|
response.status_code, status_code,
|
||
|
|
msg_prefix + "Couldn't retrieve content: Response code was %d"
|
||
|
|
" (expected %d)" % (response.status_code, status_code)
|
||
|
|
)
|
||
|
|
|
||
|
|
if response.streaming:
|
||
|
|
content = b''.join(response.streaming_content)
|
||
|
|
else:
|
||
|
|
content = response.content
|
||
|
|
if not isinstance(text, bytes) or html:
|
||
|
|
text = str(text)
|
||
|
|
content = content.decode(response.charset)
|
||
|
|
text_repr = "'%s'" % text
|
||
|
|
else:
|
||
|
|
text_repr = repr(text)
|
||
|
|
if html:
|
||
|
|
content = assert_and_parse_html(self, content, None, "Response's content is not valid HTML:")
|
||
|
|
text = assert_and_parse_html(self, text, None, "Second argument is not valid HTML:")
|
||
|
|
real_count = content.count(text)
|
||
|
|
return (text_repr, real_count, msg_prefix)
|
||
|
|
|
||
|
|
def assertContains(self, response, text, count=None, status_code=200, msg_prefix='', html=False):
|
||
|
|
"""
|
||
|
|
Assert that a response indicates that some content was retrieved
|
||
|
|
successfully, (i.e., the HTTP status code was as expected) and that
|
||
|
|
``text`` occurs ``count`` times in the content of the response.
|
||
|
|
If ``count`` is None, the count doesn't matter - the assertion is true
|
||
|
|
if the text occurs at least once in the response.
|
||
|
|
"""
|
||
|
|
text_repr, real_count, msg_prefix = self._assert_contains(
|
||
|
|
response, text, status_code, msg_prefix, html)
|
||
|
|
|
||
|
|
if count is not None:
|
||
|
|
self.assertEqual(
|
||
|
|
real_count, count,
|
||
|
|
msg_prefix + "Found %d instances of %s in response (expected %d)" % (real_count, text_repr, count)
|
||
|
|
)
|
||
|
|
else:
|
||
|
|
self.assertTrue(real_count != 0, msg_prefix + "Couldn't find %s in response" % text_repr)
|
||
|
|
|
||
|
|
def assertNotContains(self, response, text, status_code=200, msg_prefix='', html=False):
|
||
|
|
"""
|
||
|
|
Assert that a response indicates that some content was retrieved
|
||
|
|
successfully, (i.e., the HTTP status code was as expected) and that
|
||
|
|
``text`` doesn't occurs in the content of the response.
|
||
|
|
"""
|
||
|
|
text_repr, real_count, msg_prefix = self._assert_contains(
|
||
|
|
response, text, status_code, msg_prefix, html)
|
||
|
|
|
||
|
|
self.assertEqual(real_count, 0, msg_prefix + "Response should not contain %s" % text_repr)
|
||
|
|
|
||
|
|
def assertFormError(self, response, form, field, errors, msg_prefix=''):
|
||
|
|
"""
|
||
|
|
Assert that a form used to render the response has a specific field
|
||
|
|
error.
|
||
|
|
"""
|
||
|
|
if msg_prefix:
|
||
|
|
msg_prefix += ": "
|
||
|
|
|
||
|
|
# Put context(s) into a list to simplify processing.
|
||
|
|
contexts = to_list(response.context)
|
||
|
|
if not contexts:
|
||
|
|
self.fail(msg_prefix + "Response did not use any contexts to render the response")
|
||
|
|
|
||
|
|
# Put error(s) into a list to simplify processing.
|
||
|
|
errors = to_list(errors)
|
||
|
|
|
||
|
|
# Search all contexts for the error.
|
||
|
|
found_form = False
|
||
|
|
for i, context in enumerate(contexts):
|
||
|
|
if form not in context:
|
||
|
|
continue
|
||
|
|
found_form = True
|
||
|
|
for err in errors:
|
||
|
|
if field:
|
||
|
|
if field in context[form].errors:
|
||
|
|
field_errors = context[form].errors[field]
|
||
|
|
self.assertTrue(
|
||
|
|
err in field_errors,
|
||
|
|
msg_prefix + "The field '%s' on form '%s' in"
|
||
|
|
" context %d does not contain the error '%s'"
|
||
|
|
" (actual errors: %s)" %
|
||
|
|
(field, form, i, err, repr(field_errors))
|
||
|
|
)
|
||
|
|
elif field in context[form].fields:
|
||
|
|
self.fail(
|
||
|
|
msg_prefix + "The field '%s' on form '%s' in context %d contains no errors" %
|
||
|
|
(field, form, i)
|
||
|
|
)
|
||
|
|
else:
|
||
|
|
self.fail(
|
||
|
|
msg_prefix + "The form '%s' in context %d does not contain the field '%s'" %
|
||
|
|
(form, i, field)
|
||
|
|
)
|
||
|
|
else:
|
||
|
|
non_field_errors = context[form].non_field_errors()
|
||
|
|
self.assertTrue(
|
||
|
|
err in non_field_errors,
|
||
|
|
msg_prefix + "The form '%s' in context %d does not"
|
||
|
|
" contain the non-field error '%s'"
|
||
|
|
" (actual errors: %s)" %
|
||
|
|
(form, i, err, non_field_errors or 'none')
|
||
|
|
)
|
||
|
|
if not found_form:
|
||
|
|
self.fail(msg_prefix + "The form '%s' was not used to render the response" % form)
|
||
|
|
|
||
|
|
def assertFormsetError(self, response, formset, form_index, field, errors,
|
||
|
|
msg_prefix=''):
|
||
|
|
"""
|
||
|
|
Assert that a formset used to render the response has a specific error.
|
||
|
|
|
||
|
|
For field errors, specify the ``form_index`` and the ``field``.
|
||
|
|
For non-field errors, specify the ``form_index`` and the ``field`` as
|
||
|
|
None.
|
||
|
|
For non-form errors, specify ``form_index`` as None and the ``field``
|
||
|
|
as None.
|
||
|
|
"""
|
||
|
|
# Add punctuation to msg_prefix
|
||
|
|
if msg_prefix:
|
||
|
|
msg_prefix += ": "
|
||
|
|
|
||
|
|
# Put context(s) into a list to simplify processing.
|
||
|
|
contexts = to_list(response.context)
|
||
|
|
if not contexts:
|
||
|
|
self.fail(msg_prefix + 'Response did not use any contexts to '
|
||
|
|
'render the response')
|
||
|
|
|
||
|
|
# Put error(s) into a list to simplify processing.
|
||
|
|
errors = to_list(errors)
|
||
|
|
|
||
|
|
# Search all contexts for the error.
|
||
|
|
found_formset = False
|
||
|
|
for i, context in enumerate(contexts):
|
||
|
|
if formset not in context:
|
||
|
|
continue
|
||
|
|
found_formset = True
|
||
|
|
for err in errors:
|
||
|
|
if field is not None:
|
||
|
|
if field in context[formset].forms[form_index].errors:
|
||
|
|
field_errors = context[formset].forms[form_index].errors[field]
|
||
|
|
self.assertTrue(
|
||
|
|
err in field_errors,
|
||
|
|
msg_prefix + "The field '%s' on formset '%s', "
|
||
|
|
"form %d in context %d does not contain the "
|
||
|
|
"error '%s' (actual errors: %s)" %
|
||
|
|
(field, formset, form_index, i, err, repr(field_errors))
|
||
|
|
)
|
||
|
|
elif field in context[formset].forms[form_index].fields:
|
||
|
|
self.fail(
|
||
|
|
msg_prefix + "The field '%s' on formset '%s', form %d in context %d contains no errors"
|
||
|
|
% (field, formset, form_index, i)
|
||
|
|
)
|
||
|
|
else:
|
||
|
|
self.fail(
|
||
|
|
msg_prefix + "The formset '%s', form %d in context %d does not contain the field '%s'"
|
||
|
|
% (formset, form_index, i, field)
|
||
|
|
)
|
||
|
|
elif form_index is not None:
|
||
|
|
non_field_errors = context[formset].forms[form_index].non_field_errors()
|
||
|
|
self.assertFalse(
|
||
|
|
not non_field_errors,
|
||
|
|
msg_prefix + "The formset '%s', form %d in context %d "
|
||
|
|
"does not contain any non-field errors." % (formset, form_index, i)
|
||
|
|
)
|
||
|
|
self.assertTrue(
|
||
|
|
err in non_field_errors,
|
||
|
|
msg_prefix + "The formset '%s', form %d in context %d "
|
||
|
|
"does not contain the non-field error '%s' (actual errors: %s)"
|
||
|
|
% (formset, form_index, i, err, repr(non_field_errors))
|
||
|
|
)
|
||
|
|
else:
|
||
|
|
non_form_errors = context[formset].non_form_errors()
|
||
|
|
self.assertFalse(
|
||
|
|
not non_form_errors,
|
||
|
|
msg_prefix + "The formset '%s' in context %d does not "
|
||
|
|
"contain any non-form errors." % (formset, i)
|
||
|
|
)
|
||
|
|
self.assertTrue(
|
||
|
|
err in non_form_errors,
|
||
|
|
msg_prefix + "The formset '%s' in context %d does not "
|
||
|
|
"contain the non-form error '%s' (actual errors: %s)"
|
||
|
|
% (formset, i, err, repr(non_form_errors))
|
||
|
|
)
|
||
|
|
if not found_formset:
|
||
|
|
self.fail(msg_prefix + "The formset '%s' was not used to render the response" % formset)
|
||
|
|
|
||
|
|
def _assert_template_used(self, response, template_name, msg_prefix):
|
||
|
|
|
||
|
|
if response is None and template_name is None:
|
||
|
|
raise TypeError('response and/or template_name argument must be provided')
|
||
|
|
|
||
|
|
if msg_prefix:
|
||
|
|
msg_prefix += ": "
|
||
|
|
|
||
|
|
if template_name is not None and response is not None and not hasattr(response, 'templates'):
|
||
|
|
raise ValueError(
|
||
|
|
"assertTemplateUsed() and assertTemplateNotUsed() are only "
|
||
|
|
"usable on responses fetched using the Django test Client."
|
||
|
|
)
|
||
|
|
|
||
|
|
if not hasattr(response, 'templates') or (response is None and template_name):
|
||
|
|
if response:
|
||
|
|
template_name = response
|
||
|
|
response = None
|
||
|
|
# use this template with context manager
|
||
|
|
return template_name, None, msg_prefix
|
||
|
|
|
||
|
|
template_names = [t.name for t in response.templates if t.name is not None]
|
||
|
|
return None, template_names, msg_prefix
|
||
|
|
|
||
|
|
def assertTemplateUsed(self, response=None, template_name=None, msg_prefix='', count=None):
|
||
|
|
"""
|
||
|
|
Assert that the template with the provided name was used in rendering
|
||
|
|
the response. Also usable as context manager.
|
||
|
|
"""
|
||
|
|
context_mgr_template, template_names, msg_prefix = self._assert_template_used(
|
||
|
|
response, template_name, msg_prefix)
|
||
|
|
|
||
|
|
if context_mgr_template:
|
||
|
|
# Use assertTemplateUsed as context manager.
|
||
|
|
return _AssertTemplateUsedContext(self, context_mgr_template)
|
||
|
|
|
||
|
|
if not template_names:
|
||
|
|
self.fail(msg_prefix + "No templates used to render the response")
|
||
|
|
self.assertTrue(
|
||
|
|
template_name in template_names,
|
||
|
|
msg_prefix + "Template '%s' was not a template used to render"
|
||
|
|
" the response. Actual template(s) used: %s"
|
||
|
|
% (template_name, ', '.join(template_names))
|
||
|
|
)
|
||
|
|
|
||
|
|
if count is not None:
|
||
|
|
self.assertEqual(
|
||
|
|
template_names.count(template_name), count,
|
||
|
|
msg_prefix + "Template '%s' was expected to be rendered %d "
|
||
|
|
"time(s) but was actually rendered %d time(s)."
|
||
|
|
% (template_name, count, template_names.count(template_name))
|
||
|
|
)
|
||
|
|
|
||
|
|
def assertTemplateNotUsed(self, response=None, template_name=None, msg_prefix=''):
|
||
|
|
"""
|
||
|
|
Assert that the template with the provided name was NOT used in
|
||
|
|
rendering the response. Also usable as context manager.
|
||
|
|
"""
|
||
|
|
context_mgr_template, template_names, msg_prefix = self._assert_template_used(
|
||
|
|
response, template_name, msg_prefix
|
||
|
|
)
|
||
|
|
if context_mgr_template:
|
||
|
|
# Use assertTemplateNotUsed as context manager.
|
||
|
|
return _AssertTemplateNotUsedContext(self, context_mgr_template)
|
||
|
|
|
||
|
|
self.assertFalse(
|
||
|
|
template_name in template_names,
|
||
|
|
msg_prefix + "Template '%s' was used unexpectedly in rendering the response" % template_name
|
||
|
|
)
|
||
|
|
|
||
|
|
@contextmanager
|
||
|
|
def _assert_raises_or_warns_cm(self, func, cm_attr, expected_exception, expected_message):
|
||
|
|
with func(expected_exception) as cm:
|
||
|
|
yield cm
|
||
|
|
self.assertIn(expected_message, str(getattr(cm, cm_attr)))
|
||
|
|
|
||
|
|
def _assertFooMessage(self, func, cm_attr, expected_exception, expected_message, *args, **kwargs):
|
||
|
|
callable_obj = None
|
||
|
|
if args:
|
||
|
|
callable_obj, *args = args
|
||
|
|
cm = self._assert_raises_or_warns_cm(func, cm_attr, expected_exception, expected_message)
|
||
|
|
# Assertion used in context manager fashion.
|
||
|
|
if callable_obj is None:
|
||
|
|
return cm
|
||
|
|
# Assertion was passed a callable.
|
||
|
|
with cm:
|
||
|
|
callable_obj(*args, **kwargs)
|
||
|
|
|
||
|
|
def assertRaisesMessage(self, expected_exception, expected_message, *args, **kwargs):
|
||
|
|
"""
|
||
|
|
Assert that expected_message is found in the message of a raised
|
||
|
|
exception.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
expected_exception: Exception class expected to be raised.
|
||
|
|
expected_message: expected error message string value.
|
||
|
|
args: Function to be called and extra positional args.
|
||
|
|
kwargs: Extra kwargs.
|
||
|
|
"""
|
||
|
|
return self._assertFooMessage(
|
||
|
|
self.assertRaises, 'exception', expected_exception, expected_message,
|
||
|
|
*args, **kwargs
|
||
|
|
)
|
||
|
|
|
||
|
|
def assertWarnsMessage(self, expected_warning, expected_message, *args, **kwargs):
|
||
|
|
"""
|
||
|
|
Same as assertRaisesMessage but for assertWarns() instead of
|
||
|
|
assertRaises().
|
||
|
|
"""
|
||
|
|
return self._assertFooMessage(
|
||
|
|
self.assertWarns, 'warning', expected_warning, expected_message,
|
||
|
|
*args, **kwargs
|
||
|
|
)
|
||
|
|
|
||
|
|
def assertFieldOutput(self, fieldclass, valid, invalid, field_args=None,
|
||
|
|
field_kwargs=None, empty_value=''):
|
||
|
|
"""
|
||
|
|
Assert that a form field behaves correctly with various inputs.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
fieldclass: the class of the field to be tested.
|
||
|
|
valid: a dictionary mapping valid inputs to their expected
|
||
|
|
cleaned values.
|
||
|
|
invalid: a dictionary mapping invalid inputs to one or more
|
||
|
|
raised error messages.
|
||
|
|
field_args: the args passed to instantiate the field
|
||
|
|
field_kwargs: the kwargs passed to instantiate the field
|
||
|
|
empty_value: the expected clean output for inputs in empty_values
|
||
|
|
"""
|
||
|
|
if field_args is None:
|
||
|
|
field_args = []
|
||
|
|
if field_kwargs is None:
|
||
|
|
field_kwargs = {}
|
||
|
|
required = fieldclass(*field_args, **field_kwargs)
|
||
|
|
optional = fieldclass(*field_args, **{**field_kwargs, 'required': False})
|
||
|
|
# test valid inputs
|
||
|
|
for input, output in valid.items():
|
||
|
|
self.assertEqual(required.clean(input), output)
|
||
|
|
self.assertEqual(optional.clean(input), output)
|
||
|
|
# test invalid inputs
|
||
|
|
for input, errors in invalid.items():
|
||
|
|
with self.assertRaises(ValidationError) as context_manager:
|
||
|
|
required.clean(input)
|
||
|
|
self.assertEqual(context_manager.exception.messages, errors)
|
||
|
|
|
||
|
|
with self.assertRaises(ValidationError) as context_manager:
|
||
|
|
optional.clean(input)
|
||
|
|
self.assertEqual(context_manager.exception.messages, errors)
|
||
|
|
# test required inputs
|
||
|
|
error_required = [required.error_messages['required']]
|
||
|
|
for e in required.empty_values:
|
||
|
|
with self.assertRaises(ValidationError) as context_manager:
|
||
|
|
required.clean(e)
|
||
|
|
self.assertEqual(context_manager.exception.messages, error_required)
|
||
|
|
self.assertEqual(optional.clean(e), empty_value)
|
||
|
|
# test that max_length and min_length are always accepted
|
||
|
|
if issubclass(fieldclass, CharField):
|
||
|
|
field_kwargs.update({'min_length': 2, 'max_length': 20})
|
||
|
|
self.assertIsInstance(fieldclass(*field_args, **field_kwargs), fieldclass)
|
||
|
|
|
||
|
|
def assertHTMLEqual(self, html1, html2, msg=None):
|
||
|
|
"""
|
||
|
|
Assert that two HTML snippets are semantically the same.
|
||
|
|
Whitespace in most cases is ignored, and attribute ordering is not
|
||
|
|
significant. The arguments must be valid HTML.
|
||
|
|
"""
|
||
|
|
dom1 = assert_and_parse_html(self, html1, msg, 'First argument is not valid HTML:')
|
||
|
|
dom2 = assert_and_parse_html(self, html2, msg, 'Second argument is not valid HTML:')
|
||
|
|
|
||
|
|
if dom1 != dom2:
|
||
|
|
standardMsg = '%s != %s' % (
|
||
|
|
safe_repr(dom1, True), safe_repr(dom2, True))
|
||
|
|
diff = ('\n' + '\n'.join(difflib.ndiff(
|
||
|
|
str(dom1).splitlines(), str(dom2).splitlines(),
|
||
|
|
)))
|
||
|
|
standardMsg = self._truncateMessage(standardMsg, diff)
|
||
|
|
self.fail(self._formatMessage(msg, standardMsg))
|
||
|
|
|
||
|
|
def assertHTMLNotEqual(self, html1, html2, msg=None):
|
||
|
|
"""Assert that two HTML snippets are not semantically equivalent."""
|
||
|
|
dom1 = assert_and_parse_html(self, html1, msg, 'First argument is not valid HTML:')
|
||
|
|
dom2 = assert_and_parse_html(self, html2, msg, 'Second argument is not valid HTML:')
|
||
|
|
|
||
|
|
if dom1 == dom2:
|
||
|
|
standardMsg = '%s == %s' % (
|
||
|
|
safe_repr(dom1, True), safe_repr(dom2, True))
|
||
|
|
self.fail(self._formatMessage(msg, standardMsg))
|
||
|
|
|
||
|
|
def assertInHTML(self, needle, haystack, count=None, msg_prefix=''):
|
||
|
|
needle = assert_and_parse_html(self, needle, None, 'First argument is not valid HTML:')
|
||
|
|
haystack = assert_and_parse_html(self, haystack, None, 'Second argument is not valid HTML:')
|
||
|
|
real_count = haystack.count(needle)
|
||
|
|
if count is not None:
|
||
|
|
self.assertEqual(
|
||
|
|
real_count, count,
|
||
|
|
msg_prefix + "Found %d instances of '%s' in response (expected %d)" % (real_count, needle, count)
|
||
|
|
)
|
||
|
|
else:
|
||
|
|
self.assertTrue(real_count != 0, msg_prefix + "Couldn't find '%s' in response" % needle)
|
||
|
|
|
||
|
|
def assertJSONEqual(self, raw, expected_data, msg=None):
|
||
|
|
"""
|
||
|
|
Assert that the JSON fragments raw and expected_data are equal.
|
||
|
|
Usual JSON non-significant whitespace rules apply as the heavyweight
|
||
|
|
is delegated to the json library.
|
||
|
|
"""
|
||
|
|
try:
|
||
|
|
data = json.loads(raw)
|
||
|
|
except json.JSONDecodeError:
|
||
|
|
self.fail("First argument is not valid JSON: %r" % raw)
|
||
|
|
if isinstance(expected_data, str):
|
||
|
|
try:
|
||
|
|
expected_data = json.loads(expected_data)
|
||
|
|
except ValueError:
|
||
|
|
self.fail("Second argument is not valid JSON: %r" % expected_data)
|
||
|
|
self.assertEqual(data, expected_data, msg=msg)
|
||
|
|
|
||
|
|
def assertJSONNotEqual(self, raw, expected_data, msg=None):
|
||
|
|
"""
|
||
|
|
Assert that the JSON fragments raw and expected_data are not equal.
|
||
|
|
Usual JSON non-significant whitespace rules apply as the heavyweight
|
||
|
|
is delegated to the json library.
|
||
|
|
"""
|
||
|
|
try:
|
||
|
|
data = json.loads(raw)
|
||
|
|
except json.JSONDecodeError:
|
||
|
|
self.fail("First argument is not valid JSON: %r" % raw)
|
||
|
|
if isinstance(expected_data, str):
|
||
|
|
try:
|
||
|
|
expected_data = json.loads(expected_data)
|
||
|
|
except json.JSONDecodeError:
|
||
|
|
self.fail("Second argument is not valid JSON: %r" % expected_data)
|
||
|
|
self.assertNotEqual(data, expected_data, msg=msg)
|
||
|
|
|
||
|
|
def assertXMLEqual(self, xml1, xml2, msg=None):
|
||
|
|
"""
|
||
|
|
Assert that two XML snippets are semantically the same.
|
||
|
|
Whitespace in most cases is ignored and attribute ordering is not
|
||
|
|
significant. The arguments must be valid XML.
|
||
|
|
"""
|
||
|
|
try:
|
||
|
|
result = compare_xml(xml1, xml2)
|
||
|
|
except Exception as e:
|
||
|
|
standardMsg = 'First or second argument is not valid XML\n%s' % e
|
||
|
|
self.fail(self._formatMessage(msg, standardMsg))
|
||
|
|
else:
|
||
|
|
if not result:
|
||
|
|
standardMsg = '%s != %s' % (safe_repr(xml1, True), safe_repr(xml2, True))
|
||
|
|
diff = ('\n' + '\n'.join(
|
||
|
|
difflib.ndiff(xml1.splitlines(), xml2.splitlines())
|
||
|
|
))
|
||
|
|
standardMsg = self._truncateMessage(standardMsg, diff)
|
||
|
|
self.fail(self._formatMessage(msg, standardMsg))
|
||
|
|
|
||
|
|
def assertXMLNotEqual(self, xml1, xml2, msg=None):
|
||
|
|
"""
|
||
|
|
Assert that two XML snippets are not semantically equivalent.
|
||
|
|
Whitespace in most cases is ignored and attribute ordering is not
|
||
|
|
significant. The arguments must be valid XML.
|
||
|
|
"""
|
||
|
|
try:
|
||
|
|
result = compare_xml(xml1, xml2)
|
||
|
|
except Exception as e:
|
||
|
|
standardMsg = 'First or second argument is not valid XML\n%s' % e
|
||
|
|
self.fail(self._formatMessage(msg, standardMsg))
|
||
|
|
else:
|
||
|
|
if result:
|
||
|
|
standardMsg = '%s == %s' % (safe_repr(xml1, True), safe_repr(xml2, True))
|
||
|
|
self.fail(self._formatMessage(msg, standardMsg))
|
||
|
|
|
||
|
|
|
||
|
|
class _TransactionTestCaseDatabasesDescriptor:
|
||
|
|
"""Descriptor for TransactionTestCase.multi_db deprecation."""
|
||
|
|
msg = (
|
||
|
|
'`TransactionTestCase.multi_db` is deprecated. Databases available '
|
||
|
|
'during this test can be defined using %s.%s.databases.'
|
||
|
|
)
|
||
|
|
|
||
|
|
def __get__(self, instance, cls=None):
|
||
|
|
try:
|
||
|
|
multi_db = cls.multi_db
|
||
|
|
except AttributeError:
|
||
|
|
pass
|
||
|
|
else:
|
||
|
|
msg = self.msg % (cls.__module__, cls.__qualname__)
|
||
|
|
warnings.warn(msg, RemovedInDjango31Warning)
|
||
|
|
if multi_db:
|
||
|
|
return set(connections)
|
||
|
|
return {DEFAULT_DB_ALIAS}
|
||
|
|
|
||
|
|
|
||
|
|
class TransactionTestCase(SimpleTestCase):
|
||
|
|
|
||
|
|
# Subclasses can ask for resetting of auto increment sequence before each
|
||
|
|
# test case
|
||
|
|
reset_sequences = False
|
||
|
|
|
||
|
|
# Subclasses can enable only a subset of apps for faster tests
|
||
|
|
available_apps = None
|
||
|
|
|
||
|
|
# Subclasses can define fixtures which will be automatically installed.
|
||
|
|
fixtures = None
|
||
|
|
|
||
|
|
databases = _TransactionTestCaseDatabasesDescriptor()
|
||
|
|
_disallowed_database_msg = (
|
||
|
|
'Database %(operation)s to %(alias)r are not allowed in this test. '
|
||
|
|
'Add %(alias)r to %(test)s.databases to ensure proper test isolation '
|
||
|
|
'and silence this failure.'
|
||
|
|
)
|
||
|
|
|
||
|
|
# If transactions aren't available, Django will serialize the database
|
||
|
|
# contents into a fixture during setup and flush and reload them
|
||
|
|
# during teardown (as flush does not restore data from migrations).
|
||
|
|
# This can be slow; this flag allows enabling on a per-case basis.
|
||
|
|
serialized_rollback = False
|
||
|
|
|
||
|
|
def _pre_setup(self):
|
||
|
|
"""
|
||
|
|
Perform pre-test setup:
|
||
|
|
* If the class has an 'available_apps' attribute, restrict the app
|
||
|
|
registry to these applications, then fire the post_migrate signal --
|
||
|
|
it must run with the correct set of applications for the test case.
|
||
|
|
* If the class has a 'fixtures' attribute, install those fixtures.
|
||
|
|
"""
|
||
|
|
super()._pre_setup()
|
||
|
|
if self.available_apps is not None:
|
||
|
|
apps.set_available_apps(self.available_apps)
|
||
|
|
setting_changed.send(
|
||
|
|
sender=settings._wrapped.__class__,
|
||
|
|
setting='INSTALLED_APPS',
|
||
|
|
value=self.available_apps,
|
||
|
|
enter=True,
|
||
|
|
)
|
||
|
|
for db_name in self._databases_names(include_mirrors=False):
|
||
|
|
emit_post_migrate_signal(verbosity=0, interactive=False, db=db_name)
|
||
|
|
try:
|
||
|
|
self._fixture_setup()
|
||
|
|
except Exception:
|
||
|
|
if self.available_apps is not None:
|
||
|
|
apps.unset_available_apps()
|
||
|
|
setting_changed.send(
|
||
|
|
sender=settings._wrapped.__class__,
|
||
|
|
setting='INSTALLED_APPS',
|
||
|
|
value=settings.INSTALLED_APPS,
|
||
|
|
enter=False,
|
||
|
|
)
|
||
|
|
raise
|
||
|
|
# Clear the queries_log so that it's less likely to overflow (a single
|
||
|
|
# test probably won't execute 9K queries). If queries_log overflows,
|
||
|
|
# then assertNumQueries() doesn't work.
|
||
|
|
for db_name in self._databases_names(include_mirrors=False):
|
||
|
|
connections[db_name].queries_log.clear()
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def _databases_names(cls, include_mirrors=True):
|
||
|
|
# Only consider allowed database aliases, including mirrors or not.
|
||
|
|
return [
|
||
|
|
alias for alias in connections
|
||
|
|
if alias in cls.databases and (
|
||
|
|
include_mirrors or not connections[alias].settings_dict['TEST']['MIRROR']
|
||
|
|
)
|
||
|
|
]
|
||
|
|
|
||
|
|
def _reset_sequences(self, db_name):
|
||
|
|
conn = connections[db_name]
|
||
|
|
if conn.features.supports_sequence_reset:
|
||
|
|
sql_list = conn.ops.sequence_reset_by_name_sql(
|
||
|
|
no_style(), conn.introspection.sequence_list())
|
||
|
|
if sql_list:
|
||
|
|
with transaction.atomic(using=db_name):
|
||
|
|
with conn.cursor() as cursor:
|
||
|
|
for sql in sql_list:
|
||
|
|
cursor.execute(sql)
|
||
|
|
|
||
|
|
def _fixture_setup(self):
|
||
|
|
for db_name in self._databases_names(include_mirrors=False):
|
||
|
|
# Reset sequences
|
||
|
|
if self.reset_sequences:
|
||
|
|
self._reset_sequences(db_name)
|
||
|
|
|
||
|
|
# Provide replica initial data from migrated apps, if needed.
|
||
|
|
if self.serialized_rollback and hasattr(connections[db_name], "_test_serialized_contents"):
|
||
|
|
if self.available_apps is not None:
|
||
|
|
apps.unset_available_apps()
|
||
|
|
connections[db_name].creation.deserialize_db_from_string(
|
||
|
|
connections[db_name]._test_serialized_contents
|
||
|
|
)
|
||
|
|
if self.available_apps is not None:
|
||
|
|
apps.set_available_apps(self.available_apps)
|
||
|
|
|
||
|
|
if self.fixtures:
|
||
|
|
# We have to use this slightly awkward syntax due to the fact
|
||
|
|
# that we're using *args and **kwargs together.
|
||
|
|
call_command('loaddata', *self.fixtures,
|
||
|
|
**{'verbosity': 0, 'database': db_name})
|
||
|
|
|
||
|
|
def _should_reload_connections(self):
|
||
|
|
return True
|
||
|
|
|
||
|
|
def _post_teardown(self):
|
||
|
|
"""
|
||
|
|
Perform post-test things:
|
||
|
|
* Flush the contents of the database to leave a clean slate. If the
|
||
|
|
class has an 'available_apps' attribute, don't fire post_migrate.
|
||
|
|
* Force-close the connection so the next test gets a clean cursor.
|
||
|
|
"""
|
||
|
|
try:
|
||
|
|
self._fixture_teardown()
|
||
|
|
super()._post_teardown()
|
||
|
|
if self._should_reload_connections():
|
||
|
|
# Some DB cursors include SQL statements as part of cursor
|
||
|
|
# creation. If you have a test that does a rollback, the effect
|
||
|
|
# of these statements is lost, which can affect the operation of
|
||
|
|
# tests (e.g., losing a timezone setting causing objects to be
|
||
|
|
# created with the wrong time). To make sure this doesn't
|
||
|
|
# happen, get a clean connection at the start of every test.
|
||
|
|
for conn in connections.all():
|
||
|
|
conn.close()
|
||
|
|
finally:
|
||
|
|
if self.available_apps is not None:
|
||
|
|
apps.unset_available_apps()
|
||
|
|
setting_changed.send(sender=settings._wrapped.__class__,
|
||
|
|
setting='INSTALLED_APPS',
|
||
|
|
value=settings.INSTALLED_APPS,
|
||
|
|
enter=False)
|
||
|
|
|
||
|
|
def _fixture_teardown(self):
|
||
|
|
# Allow TRUNCATE ... CASCADE and don't emit the post_migrate signal
|
||
|
|
# when flushing only a subset of the apps
|
||
|
|
for db_name in self._databases_names(include_mirrors=False):
|
||
|
|
# Flush the database
|
||
|
|
inhibit_post_migrate = (
|
||
|
|
self.available_apps is not None or
|
||
|
|
( # Inhibit the post_migrate signal when using serialized
|
||
|
|
# rollback to avoid trying to recreate the serialized data.
|
||
|
|
self.serialized_rollback and
|
||
|
|
hasattr(connections[db_name], '_test_serialized_contents')
|
||
|
|
)
|
||
|
|
)
|
||
|
|
call_command('flush', verbosity=0, interactive=False,
|
||
|
|
database=db_name, reset_sequences=False,
|
||
|
|
allow_cascade=self.available_apps is not None,
|
||
|
|
inhibit_post_migrate=inhibit_post_migrate)
|
||
|
|
|
||
|
|
def assertQuerysetEqual(self, qs, values, transform=repr, ordered=True, msg=None):
|
||
|
|
items = map(transform, qs)
|
||
|
|
if not ordered:
|
||
|
|
return self.assertEqual(Counter(items), Counter(values), msg=msg)
|
||
|
|
values = list(values)
|
||
|
|
# For example qs.iterator() could be passed as qs, but it does not
|
||
|
|
# have 'ordered' attribute.
|
||
|
|
if len(values) > 1 and hasattr(qs, 'ordered') and not qs.ordered:
|
||
|
|
raise ValueError("Trying to compare non-ordered queryset "
|
||
|
|
"against more than one ordered values")
|
||
|
|
return self.assertEqual(list(items), values, msg=msg)
|
||
|
|
|
||
|
|
def assertNumQueries(self, num, func=None, *args, using=DEFAULT_DB_ALIAS, **kwargs):
|
||
|
|
conn = connections[using]
|
||
|
|
|
||
|
|
context = _AssertNumQueriesContext(self, num, conn)
|
||
|
|
if func is None:
|
||
|
|
return context
|
||
|
|
|
||
|
|
with context:
|
||
|
|
func(*args, **kwargs)
|
||
|
|
|
||
|
|
|
||
|
|
def connections_support_transactions(aliases=None):
|
||
|
|
"""
|
||
|
|
Return whether or not all (or specified) connections support
|
||
|
|
transactions.
|
||
|
|
"""
|
||
|
|
conns = connections.all() if aliases is None else (connections[alias] for alias in aliases)
|
||
|
|
return all(conn.features.supports_transactions for conn in conns)
|
||
|
|
|
||
|
|
|
||
|
|
class _TestCaseDatabasesDescriptor(_TransactionTestCaseDatabasesDescriptor):
|
||
|
|
"""Descriptor for TestCase.multi_db deprecation."""
|
||
|
|
msg = (
|
||
|
|
'`TestCase.multi_db` is deprecated. Databases available during this '
|
||
|
|
'test can be defined using %s.%s.databases.'
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
class TestCase(TransactionTestCase):
|
||
|
|
"""
|
||
|
|
Similar to TransactionTestCase, but use `transaction.atomic()` to achieve
|
||
|
|
test isolation.
|
||
|
|
|
||
|
|
In most situations, TestCase should be preferred to TransactionTestCase as
|
||
|
|
it allows faster execution. However, there are some situations where using
|
||
|
|
TransactionTestCase might be necessary (e.g. testing some transactional
|
||
|
|
behavior).
|
||
|
|
|
||
|
|
On database backends with no transaction support, TestCase behaves as
|
||
|
|
TransactionTestCase.
|
||
|
|
"""
|
||
|
|
databases = _TestCaseDatabasesDescriptor()
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def _enter_atomics(cls):
|
||
|
|
"""Open atomic blocks for multiple databases."""
|
||
|
|
atomics = {}
|
||
|
|
for db_name in cls._databases_names():
|
||
|
|
atomics[db_name] = transaction.atomic(using=db_name)
|
||
|
|
atomics[db_name].__enter__()
|
||
|
|
return atomics
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def _rollback_atomics(cls, atomics):
|
||
|
|
"""Rollback atomic blocks opened by the previous method."""
|
||
|
|
for db_name in reversed(cls._databases_names()):
|
||
|
|
transaction.set_rollback(True, using=db_name)
|
||
|
|
atomics[db_name].__exit__(None, None, None)
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def _databases_support_transactions(cls):
|
||
|
|
return connections_support_transactions(cls.databases)
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def setUpClass(cls):
|
||
|
|
super().setUpClass()
|
||
|
|
if not cls._databases_support_transactions():
|
||
|
|
return
|
||
|
|
cls.cls_atomics = cls._enter_atomics()
|
||
|
|
|
||
|
|
if cls.fixtures:
|
||
|
|
for db_name in cls._databases_names(include_mirrors=False):
|
||
|
|
try:
|
||
|
|
call_command('loaddata', *cls.fixtures, **{'verbosity': 0, 'database': db_name})
|
||
|
|
except Exception:
|
||
|
|
cls._rollback_atomics(cls.cls_atomics)
|
||
|
|
cls._remove_databases_failures()
|
||
|
|
raise
|
||
|
|
try:
|
||
|
|
cls.setUpTestData()
|
||
|
|
except Exception:
|
||
|
|
cls._rollback_atomics(cls.cls_atomics)
|
||
|
|
cls._remove_databases_failures()
|
||
|
|
raise
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def tearDownClass(cls):
|
||
|
|
if cls._databases_support_transactions():
|
||
|
|
cls._rollback_atomics(cls.cls_atomics)
|
||
|
|
for conn in connections.all():
|
||
|
|
conn.close()
|
||
|
|
super().tearDownClass()
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def setUpTestData(cls):
|
||
|
|
"""Load initial data for the TestCase."""
|
||
|
|
pass
|
||
|
|
|
||
|
|
def _should_reload_connections(self):
|
||
|
|
if self._databases_support_transactions():
|
||
|
|
return False
|
||
|
|
return super()._should_reload_connections()
|
||
|
|
|
||
|
|
def _fixture_setup(self):
|
||
|
|
if not self._databases_support_transactions():
|
||
|
|
# If the backend does not support transactions, we should reload
|
||
|
|
# class data before each test
|
||
|
|
self.setUpTestData()
|
||
|
|
return super()._fixture_setup()
|
||
|
|
|
||
|
|
assert not self.reset_sequences, 'reset_sequences cannot be used on TestCase instances'
|
||
|
|
self.atomics = self._enter_atomics()
|
||
|
|
|
||
|
|
def _fixture_teardown(self):
|
||
|
|
if not self._databases_support_transactions():
|
||
|
|
return super()._fixture_teardown()
|
||
|
|
try:
|
||
|
|
for db_name in reversed(self._databases_names()):
|
||
|
|
if self._should_check_constraints(connections[db_name]):
|
||
|
|
connections[db_name].check_constraints()
|
||
|
|
finally:
|
||
|
|
self._rollback_atomics(self.atomics)
|
||
|
|
|
||
|
|
def _should_check_constraints(self, connection):
|
||
|
|
return (
|
||
|
|
connection.features.can_defer_constraint_checks and
|
||
|
|
not connection.needs_rollback and connection.is_usable()
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
class CheckCondition:
|
||
|
|
"""Descriptor class for deferred condition checking."""
|
||
|
|
def __init__(self, *conditions):
|
||
|
|
self.conditions = conditions
|
||
|
|
|
||
|
|
def add_condition(self, condition, reason):
|
||
|
|
return self.__class__(*self.conditions, (condition, reason))
|
||
|
|
|
||
|
|
def __get__(self, instance, cls=None):
|
||
|
|
# Trigger access for all bases.
|
||
|
|
if any(getattr(base, '__unittest_skip__', False) for base in cls.__bases__):
|
||
|
|
return True
|
||
|
|
for condition, reason in self.conditions:
|
||
|
|
if condition():
|
||
|
|
# Override this descriptor's value and set the skip reason.
|
||
|
|
cls.__unittest_skip__ = True
|
||
|
|
cls.__unittest_skip_why__ = reason
|
||
|
|
return True
|
||
|
|
return False
|
||
|
|
|
||
|
|
|
||
|
|
def _deferredSkip(condition, reason, name):
|
||
|
|
def decorator(test_func):
|
||
|
|
nonlocal condition
|
||
|
|
if not (isinstance(test_func, type) and
|
||
|
|
issubclass(test_func, unittest.TestCase)):
|
||
|
|
@wraps(test_func)
|
||
|
|
def skip_wrapper(*args, **kwargs):
|
||
|
|
if (args and isinstance(args[0], unittest.TestCase) and
|
||
|
|
connection.alias not in getattr(args[0], 'databases', {})):
|
||
|
|
raise ValueError(
|
||
|
|
"%s cannot be used on %s as %s doesn't allow queries "
|
||
|
|
"against the %r database." % (
|
||
|
|
name,
|
||
|
|
args[0],
|
||
|
|
args[0].__class__.__qualname__,
|
||
|
|
connection.alias,
|
||
|
|
)
|
||
|
|
)
|
||
|
|
if condition():
|
||
|
|
raise unittest.SkipTest(reason)
|
||
|
|
return test_func(*args, **kwargs)
|
||
|
|
test_item = skip_wrapper
|
||
|
|
else:
|
||
|
|
# Assume a class is decorated
|
||
|
|
test_item = test_func
|
||
|
|
databases = getattr(test_item, 'databases', None)
|
||
|
|
if not databases or connection.alias not in databases:
|
||
|
|
# Defer raising to allow importing test class's module.
|
||
|
|
def condition():
|
||
|
|
raise ValueError(
|
||
|
|
"%s cannot be used on %s as it doesn't allow queries "
|
||
|
|
"against the '%s' database." % (
|
||
|
|
name, test_item, connection.alias,
|
||
|
|
)
|
||
|
|
)
|
||
|
|
# Retrieve the possibly existing value from the class's dict to
|
||
|
|
# avoid triggering the descriptor.
|
||
|
|
skip = test_func.__dict__.get('__unittest_skip__')
|
||
|
|
if isinstance(skip, CheckCondition):
|
||
|
|
test_item.__unittest_skip__ = skip.add_condition(condition, reason)
|
||
|
|
elif skip is not True:
|
||
|
|
test_item.__unittest_skip__ = CheckCondition((condition, reason))
|
||
|
|
return test_item
|
||
|
|
return decorator
|
||
|
|
|
||
|
|
|
||
|
|
def skipIfDBFeature(*features):
|
||
|
|
"""Skip a test if a database has at least one of the named features."""
|
||
|
|
return _deferredSkip(
|
||
|
|
lambda: any(getattr(connection.features, feature, False) for feature in features),
|
||
|
|
"Database has feature(s) %s" % ", ".join(features),
|
||
|
|
'skipIfDBFeature',
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
def skipUnlessDBFeature(*features):
|
||
|
|
"""Skip a test unless a database has all the named features."""
|
||
|
|
return _deferredSkip(
|
||
|
|
lambda: not all(getattr(connection.features, feature, False) for feature in features),
|
||
|
|
"Database doesn't support feature(s): %s" % ", ".join(features),
|
||
|
|
'skipUnlessDBFeature',
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
def skipUnlessAnyDBFeature(*features):
|
||
|
|
"""Skip a test unless a database has any of the named features."""
|
||
|
|
return _deferredSkip(
|
||
|
|
lambda: not any(getattr(connection.features, feature, False) for feature in features),
|
||
|
|
"Database doesn't support any of the feature(s): %s" % ", ".join(features),
|
||
|
|
'skipUnlessAnyDBFeature',
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
class QuietWSGIRequestHandler(WSGIRequestHandler):
|
||
|
|
"""
|
||
|
|
A WSGIRequestHandler that doesn't log to standard output any of the
|
||
|
|
requests received, so as to not clutter the test result output.
|
||
|
|
"""
|
||
|
|
def log_message(*args):
|
||
|
|
pass
|
||
|
|
|
||
|
|
|
||
|
|
class FSFilesHandler(WSGIHandler):
|
||
|
|
"""
|
||
|
|
WSGI middleware that intercepts calls to a directory, as defined by one of
|
||
|
|
the *_ROOT settings, and serves those files, publishing them under *_URL.
|
||
|
|
"""
|
||
|
|
def __init__(self, application):
|
||
|
|
self.application = application
|
||
|
|
self.base_url = urlparse(self.get_base_url())
|
||
|
|
super().__init__()
|
||
|
|
|
||
|
|
def _should_handle(self, path):
|
||
|
|
"""
|
||
|
|
Check if the path should be handled. Ignore the path if:
|
||
|
|
* the host is provided as part of the base_url
|
||
|
|
* the request's path isn't under the media path (or equal)
|
||
|
|
"""
|
||
|
|
return path.startswith(self.base_url[2]) and not self.base_url[1]
|
||
|
|
|
||
|
|
def file_path(self, url):
|
||
|
|
"""Return the relative path to the file on disk for the given URL."""
|
||
|
|
relative_url = url[len(self.base_url[2]):]
|
||
|
|
return url2pathname(relative_url)
|
||
|
|
|
||
|
|
def get_response(self, request):
|
||
|
|
from django.http import Http404
|
||
|
|
|
||
|
|
if self._should_handle(request.path):
|
||
|
|
try:
|
||
|
|
return self.serve(request)
|
||
|
|
except Http404:
|
||
|
|
pass
|
||
|
|
return super().get_response(request)
|
||
|
|
|
||
|
|
def serve(self, request):
|
||
|
|
os_rel_path = self.file_path(request.path)
|
||
|
|
os_rel_path = posixpath.normpath(unquote(os_rel_path))
|
||
|
|
# Emulate behavior of django.contrib.staticfiles.views.serve() when it
|
||
|
|
# invokes staticfiles' finders functionality.
|
||
|
|
# TODO: Modify if/when that internal API is refactored
|
||
|
|
final_rel_path = os_rel_path.replace('\\', '/').lstrip('/')
|
||
|
|
return serve(request, final_rel_path, document_root=self.get_base_dir())
|
||
|
|
|
||
|
|
def __call__(self, environ, start_response):
|
||
|
|
if not self._should_handle(get_path_info(environ)):
|
||
|
|
return self.application(environ, start_response)
|
||
|
|
return super().__call__(environ, start_response)
|
||
|
|
|
||
|
|
|
||
|
|
class _StaticFilesHandler(FSFilesHandler):
|
||
|
|
"""
|
||
|
|
Handler for serving static files. A private class that is meant to be used
|
||
|
|
solely as a convenience by LiveServerThread.
|
||
|
|
"""
|
||
|
|
def get_base_dir(self):
|
||
|
|
return settings.STATIC_ROOT
|
||
|
|
|
||
|
|
def get_base_url(self):
|
||
|
|
return settings.STATIC_URL
|
||
|
|
|
||
|
|
|
||
|
|
class _MediaFilesHandler(FSFilesHandler):
|
||
|
|
"""
|
||
|
|
Handler for serving the media files. A private class that is meant to be
|
||
|
|
used solely as a convenience by LiveServerThread.
|
||
|
|
"""
|
||
|
|
def get_base_dir(self):
|
||
|
|
return settings.MEDIA_ROOT
|
||
|
|
|
||
|
|
def get_base_url(self):
|
||
|
|
return settings.MEDIA_URL
|
||
|
|
|
||
|
|
|
||
|
|
class LiveServerThread(threading.Thread):
|
||
|
|
"""Thread for running a live http server while the tests are running."""
|
||
|
|
|
||
|
|
def __init__(self, host, static_handler, connections_override=None, port=0):
|
||
|
|
self.host = host
|
||
|
|
self.port = port
|
||
|
|
self.is_ready = threading.Event()
|
||
|
|
self.error = None
|
||
|
|
self.static_handler = static_handler
|
||
|
|
self.connections_override = connections_override
|
||
|
|
super().__init__()
|
||
|
|
|
||
|
|
def run(self):
|
||
|
|
"""
|
||
|
|
Set up the live server and databases, and then loop over handling
|
||
|
|
HTTP requests.
|
||
|
|
"""
|
||
|
|
if self.connections_override:
|
||
|
|
# Override this thread's database connections with the ones
|
||
|
|
# provided by the main thread.
|
||
|
|
for alias, conn in self.connections_override.items():
|
||
|
|
connections[alias] = conn
|
||
|
|
try:
|
||
|
|
# Create the handler for serving static and media files
|
||
|
|
handler = self.static_handler(_MediaFilesHandler(WSGIHandler()))
|
||
|
|
self.httpd = self._create_server()
|
||
|
|
# If binding to port zero, assign the port allocated by the OS.
|
||
|
|
if self.port == 0:
|
||
|
|
self.port = self.httpd.server_address[1]
|
||
|
|
self.httpd.set_app(handler)
|
||
|
|
self.is_ready.set()
|
||
|
|
self.httpd.serve_forever()
|
||
|
|
except Exception as e:
|
||
|
|
self.error = e
|
||
|
|
self.is_ready.set()
|
||
|
|
finally:
|
||
|
|
connections.close_all()
|
||
|
|
|
||
|
|
def _create_server(self):
|
||
|
|
return ThreadedWSGIServer((self.host, self.port), QuietWSGIRequestHandler, allow_reuse_address=False)
|
||
|
|
|
||
|
|
def terminate(self):
|
||
|
|
if hasattr(self, 'httpd'):
|
||
|
|
# Stop the WSGI server
|
||
|
|
self.httpd.shutdown()
|
||
|
|
self.httpd.server_close()
|
||
|
|
self.join()
|
||
|
|
|
||
|
|
|
||
|
|
class LiveServerTestCase(TransactionTestCase):
|
||
|
|
"""
|
||
|
|
Do basically the same as TransactionTestCase but also launch a live HTTP
|
||
|
|
server in a separate thread so that the tests may use another testing
|
||
|
|
framework, such as Selenium for example, instead of the built-in dummy
|
||
|
|
client.
|
||
|
|
It inherits from TransactionTestCase instead of TestCase because the
|
||
|
|
threads don't share the same transactions (unless if using in-memory sqlite)
|
||
|
|
and each thread needs to commit all their transactions so that the other
|
||
|
|
thread can see the changes.
|
||
|
|
"""
|
||
|
|
host = 'localhost'
|
||
|
|
port = 0
|
||
|
|
server_thread_class = LiveServerThread
|
||
|
|
static_handler = _StaticFilesHandler
|
||
|
|
|
||
|
|
@classproperty
|
||
|
|
def live_server_url(cls):
|
||
|
|
return 'http://%s:%s' % (cls.host, cls.server_thread.port)
|
||
|
|
|
||
|
|
@classproperty
|
||
|
|
def allowed_host(cls):
|
||
|
|
return cls.host
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def setUpClass(cls):
|
||
|
|
super().setUpClass()
|
||
|
|
connections_override = {}
|
||
|
|
for conn in connections.all():
|
||
|
|
# If using in-memory sqlite databases, pass the connections to
|
||
|
|
# the server thread.
|
||
|
|
if conn.vendor == 'sqlite' and conn.is_in_memory_db():
|
||
|
|
# Explicitly enable thread-shareability for this connection
|
||
|
|
conn.inc_thread_sharing()
|
||
|
|
connections_override[conn.alias] = conn
|
||
|
|
|
||
|
|
cls._live_server_modified_settings = modify_settings(
|
||
|
|
ALLOWED_HOSTS={'append': cls.allowed_host},
|
||
|
|
)
|
||
|
|
cls._live_server_modified_settings.enable()
|
||
|
|
cls.server_thread = cls._create_server_thread(connections_override)
|
||
|
|
cls.server_thread.daemon = True
|
||
|
|
cls.server_thread.start()
|
||
|
|
|
||
|
|
# Wait for the live server to be ready
|
||
|
|
cls.server_thread.is_ready.wait()
|
||
|
|
if cls.server_thread.error:
|
||
|
|
# Clean up behind ourselves, since tearDownClass won't get called in
|
||
|
|
# case of errors.
|
||
|
|
cls._tearDownClassInternal()
|
||
|
|
raise cls.server_thread.error
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def _create_server_thread(cls, connections_override):
|
||
|
|
return cls.server_thread_class(
|
||
|
|
cls.host,
|
||
|
|
cls.static_handler,
|
||
|
|
connections_override=connections_override,
|
||
|
|
port=cls.port,
|
||
|
|
)
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def _tearDownClassInternal(cls):
|
||
|
|
# There may not be a 'server_thread' attribute if setUpClass() for some
|
||
|
|
# reasons has raised an exception.
|
||
|
|
if hasattr(cls, 'server_thread'):
|
||
|
|
# Terminate the live server's thread
|
||
|
|
cls.server_thread.terminate()
|
||
|
|
|
||
|
|
# Restore sqlite in-memory database connections' non-shareability.
|
||
|
|
for conn in cls.server_thread.connections_override.values():
|
||
|
|
conn.dec_thread_sharing()
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def tearDownClass(cls):
|
||
|
|
cls._tearDownClassInternal()
|
||
|
|
cls._live_server_modified_settings.disable()
|
||
|
|
super().tearDownClass()
|
||
|
|
|
||
|
|
|
||
|
|
class SerializeMixin:
|
||
|
|
"""
|
||
|
|
Enforce serialization of TestCases that share a common resource.
|
||
|
|
|
||
|
|
Define a common 'lockfile' for each set of TestCases to serialize. This
|
||
|
|
file must exist on the filesystem.
|
||
|
|
|
||
|
|
Place it early in the MRO in order to isolate setUpClass()/tearDownClass().
|
||
|
|
"""
|
||
|
|
lockfile = None
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def setUpClass(cls):
|
||
|
|
if cls.lockfile is None:
|
||
|
|
raise ValueError(
|
||
|
|
"{}.lockfile isn't set. Set it to a unique value "
|
||
|
|
"in the base class.".format(cls.__name__))
|
||
|
|
cls._lockfile = open(cls.lockfile)
|
||
|
|
locks.lock(cls._lockfile, locks.LOCK_EX)
|
||
|
|
super().setUpClass()
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def tearDownClass(cls):
|
||
|
|
super().tearDownClass()
|
||
|
|
cls._lockfile.close()
|