def get_app_errors():
try:
return app_cache.app_errors
except AttributeError:
app_cache.populate()
app_cache.app_errors = {}
return app_cache.app_errors
def __init__(self, stream_or_string, **options):
"""
Init this serializer given a stream or a string
"""
self.options = options
if isinstance(stream_or_string, six.string_types):
self.stream = six.StringIO(stream_or_string)
else:
self.stream = stream_or_string
# Make sure the app cache is loaded before deserialization starts
# (otherwise subclass calls to get_model() and friends might fail...)
app_cache.populate()
def Deserializer(object_list, **options):
"""
Deserialize simple Python objects back into Django ORM instances.
It's expected that you pass the Python objects themselves (instead of a
stream or a string) to the constructor
"""
db = options.pop('using', DEFAULT_DB_ALIAS)
ignore = options.pop('ignorenonexistent', False)
app_cache.populate()
for d in object_list:
# Look up the model and starting build a dict of data for it.
Model = _get_model(d["model"])
data = {}
if 'pk' in d:
data[Model._meta.pk.attname] = Model._meta.pk.to_python(d.get("pk", None))
m2m_data = {}
model_fields = Model._meta.get_all_field_names()
# Handle each field
for (field_name, field_value) in six.iteritems(d["fields"]):
if ignore and field_name not in model_fields:
# skip fields no longer on model
continue
if isinstance(field_value, str):
field_value = smart_text(field_value, options.get("encoding", settings.DEFAULT_CHARSET), strings_only=True)
field = Model._meta.get_field(field_name)
# Handle M2M relations
if field.rel and isinstance(field.rel, models.ManyToManyRel):
if hasattr(field.rel.to._default_manager, 'get_by_natural_key'):
def m2m_convert(value):
if hasattr(value, '__iter__') and not isinstance(value, six.text_type):
return field.rel.to._default_manager.db_manager(db).get_by_natural_key(*value).pk
else:
return smart_text(field.rel.to._meta.pk.to_python(value))
else:
m2m_convert = lambda v: smart_text(field.rel.to._meta.pk.to_python(v))
m2m_data[field.name] = [m2m_convert(pk) for pk in field_value]
# Handle FK fields
elif field.rel and isinstance(field.rel, models.ManyToOneRel):
if field_value is not None:
if hasattr(field.rel.to._default_manager, 'get_by_natural_key'):
if hasattr(field_value, '__iter__') and not isinstance(field_value, six.text_type):
obj = field.rel.to._default_manager.db_manager(db).get_by_natural_key(*field_value)
value = getattr(obj, field.rel.field_name)
# If this is a natural foreign key to an object that
# has a FK/O2O as the foreign key, use the FK value
if field.rel.to._meta.pk.rel:
value = value.pk
else:
value = field.rel.to._meta.get_field(field.rel.field_name).to_python(field_value)
data[field.attname] = value
else:
data[field.attname] = field.rel.to._meta.get_field(field.rel.field_name).to_python(field_value)
else:
data[field.attname] = None
# Handle all other fields
else:
data[field.name] = field.to_python(field_value)
obj = base.build_instance(Model, data, db)
yield base.DeserializedObject(obj, m2m_data)
def __init__(self):
# Before we can introspect models, they need the app cache to be fully
# loaded so that inter-relations are set up correctly.
app_cache.populate()
def setup(verbosity, test_labels):
import django
from django.conf import settings
from django.core.apps import app_cache
from django.test import TransactionTestCase, TestCase
print("Testing against Django installed in '%s'" % os.path.dirname(django.__file__))
# Force declaring available_apps in TransactionTestCase for faster tests.
def no_available_apps(self):
raise Exception("Please define available_apps in TransactionTestCase "
"and its subclasses.")
TransactionTestCase.available_apps = property(no_available_apps)
TestCase.available_apps = None
state = {
'INSTALLED_APPS': settings.INSTALLED_APPS,
'ROOT_URLCONF': getattr(settings, "ROOT_URLCONF", ""),
'TEMPLATE_DIRS': settings.TEMPLATE_DIRS,
'LANGUAGE_CODE': settings.LANGUAGE_CODE,
'STATIC_URL': settings.STATIC_URL,
'STATIC_ROOT': settings.STATIC_ROOT,
}
# Redirect some settings for the duration of these tests.
settings.INSTALLED_APPS = ALWAYS_INSTALLED_APPS
settings.ROOT_URLCONF = 'urls'
settings.STATIC_URL = '/static/'
settings.STATIC_ROOT = os.path.join(TEMP_DIR, 'static')
settings.TEMPLATE_DIRS = (os.path.join(RUNTESTS_DIR, TEST_TEMPLATE_DIR),)
settings.LANGUAGE_CODE = 'en'
settings.SITE_ID = 1
if verbosity > 0:
# Ensure any warnings captured to logging are piped through a verbose
# logging handler. If any -W options were passed explicitly on command
# line, warnings are not captured, and this has no effect.
logger = logging.getLogger('py.warnings')
handler = logging.StreamHandler()
logger.addHandler(handler)
# Load all the ALWAYS_INSTALLED_APPS.
with warnings.catch_warnings():
warnings.filterwarnings('ignore', 'django.contrib.comments is deprecated and will be removed before Django 1.8.', DeprecationWarning)
app_cache.populate()
# Load all the test model apps.
test_modules = get_test_modules()
# Reduce given test labels to just the app module path
test_labels_set = set()
for label in test_labels:
bits = label.split('.')
if bits[:2] == ['django', 'contrib']:
bits = bits[:3]
else:
bits = bits[:1]
test_labels_set.add('.'.join(bits))
for modpath, module_name in test_modules:
if modpath:
module_label = '.'.join([modpath, module_name])
else:
module_label = module_name
# if the module (or an ancestor) was named on the command line, or
# no modules were named (i.e., run all), import
# this module and add it to INSTALLED_APPS.
if not test_labels:
module_found_in_labels = True
else:
match = lambda label: (
module_label == label or # exact match
module_label.startswith(label + '.') # ancestor match
)
module_found_in_labels = any(match(l) for l in test_labels_set)
if module_found_in_labels:
if verbosity >= 2:
print("Importing application %s" % module_name)
app_cache.load_app(module_label)
if module_label not in settings.INSTALLED_APPS:
settings.INSTALLED_APPS.append(module_label)
return state
