def validate(self, app=None, display_num_errors=False):
"""
Validates the given app, raising CommandError for any errors.
If app is None, then this will validate all installed apps.
"""
from djangocg.core.management.validation import get_validation_errors
s = StringIO()
num_errors = get_validation_errors(s, app)
if num_errors:
s.seek(0)
error_text = s.read()
raise CommandError("One or more models did not validate:\n%s" % error_text)
if display_num_errors:
self.stdout.write("%s error%s found" % (num_errors, num_errors != 1 and 's' or ''))
class InvalidModelTestCase(unittest.TestCase):
"""Import an appliation with invalid models and test the exceptions."""
def setUp(self):
# Make sure sys.stdout is not a tty so that we get errors without
# coloring attached (makes matching the results easier). We restore
# sys.stderr afterwards.
self.old_stdout = sys.stdout
self.stdout = StringIO()
sys.stdout = self.stdout
# This test adds dummy applications to the app cache. These
# need to be removed in order to prevent bad interactions
# with the flush operation in other tests.
self.old_app_models = copy.deepcopy(cache.app_models)
self.old_app_store = copy.deepcopy(cache.app_store)
def tearDown(self):
cache.app_models = self.old_app_models
cache.app_store = self.old_app_store
cache._get_models_cache = {}
sys.stdout = self.old_stdout
def test_invalid_models(self):
try:
module = load_app("modeltests.invalid_models.invalid_models")
except Exception:
self.fail("Unable to load invalid model module")
count = get_validation_errors(self.stdout, module)
self.stdout.seek(0)
error_log = self.stdout.read()
actual = error_log.split("\n")
expected = module.model_errors.split("\n")
unexpected = [err for err in actual if err not in expected]
missing = [err for err in expected if err not in actual]
self.assertFalse(unexpected, "Unexpected Errors: " + "\n".join(unexpected))
self.assertFalse(missing, "Missing Errors: " + "\n".join(missing))