def test_cascade(self):
# Mentioning cascade adds it to the command
mock_cursor = MagicMock()
with patch('libya_elections.db_utils.get_cursor') as mock_get_cursor:
mock_get_cursor.return_value = mock_cursor
delete_all(self.db, [Citizen], cascade=True)
expected_cmd = "TRUNCATE civil_registry_citizen CASCADE"
mock_cursor.execute.assert_called_with(expected_cmd)
def test_simple_delete(self):
# Nothing in the test database?
# (Need to use a model that has no foreign keys pointing at it.
# Otherwise, doesn't matter which model.)
model = Whitelist
factory = WhitelistFactory
self.assertFalse(model.objects.exists())
# Add something
factory()
self.assertTrue(model.objects.exists())
delete_all(self.db, [model])
self.assertFalse(model.objects.exists())
def test_postgres_only(self):
# If db is not postgres, raises exception
# Note that overriding DATABASES in a test triggers
# a warning, but I think since we're not actually doing anything
# in the database while we have it overridden, it's okay.
# (The code under test just inspects the setting and returns.)
DATABASES = {
self.db: {
'ENGINE': 'elcheaposqldb',
}
}
with override_settings(DATABASES=DATABASES):
with self.assertRaises(NotImplementedError):
delete_all(self.db, [])
def setUp(self):
# We'll use Citizen and TempCitizen. Start with them empty
# so each test can set them up as desired.
delete_all('default', [Citizen, TempCitizen], cascade=True)
def setUp(self):
delete_all('default', [Citizen, TempCitizen, CitizenMetadata], cascade=True)
def setUp(self):
delete_all('default', [Citizen, TempCitizen, CitizenMetadata],
cascade=True)
def import_citizen_dump(input_filename,
max_change_percent=DEFAULT_MAX_CHANGE_PERCENT,
encoding='UTF-8'):
with transaction.atomic():
# Clear out TempCitizen table. (We clear it at the end too, but this makes
# extra sure that we start with it empty.)
delete_all('default', [TempCitizen])
num_records_at_start = Citizen.objects.count()
#
# 1. Fill our temp table with the data from the latest dump
#
logger.info("Loading data from dump")
input_file = codecs.open(input_filename, encoding=encoding)
logger.info("Reading %s" % input_filename)
batch = BatchOperations(TempCitizen)
records_read = 0
for record in get_records(input_file):
records_read += 1
batch.add(record)
batch.flush()
#
# 2. Sync data from temp table to our real table
#
logger.info("Updating our own database")
stats = mirror_database(from_model=TempCitizen,
to_model=Citizen)
# See what % of the records we're changing
if num_records_at_start > 0:
num_changes = (stats.modified_record_count + stats.new_record_count
+ stats.not_there_anymore_count)
percent_changed = 100 * (num_changes / num_records_at_start)
if percent_changed > max_change_percent:
raise TooManyChanges(
"Too many changes, aborting Citizen data import. Max change is %f%% but "
"the import would have changed %f%% records (%d/%d). Use "
"--max-change-percent=NN to override this limit if necessary."
% (max_change_percent, percent_changed, num_changes, num_records_at_start))
# Add our data
stats.records_read = records_read
# Make a note of when we did it
timestamp = now()
CitizenMetadata.objects.update_or_create(defaults=dict(dump_time=timestamp))
# Flag any records that turned up missing
if stats.missing_pks:
Citizen.objects.filter(pk__in=stats.missing_pks, missing=None).update(missing=timestamp)
# And we're done!
# Clear out our temp table (no point in taking up disk space)
delete_all('default', [TempCitizen])
return stats
def setUp(self):
# We'll use Citizen and TempCitizen. Start with them empty
# so each test can set them up as desired.
delete_all('default', [Citizen, TempCitizen], cascade=True)