def test_short_json(self):
"""Short JSON strings shouldn't get compressed, but should be
invertible"""
field = CompressedJSONField()
to_store = field.get_prep_value({'a': 'dictionary'})
self.assertEqual(to_store[:2], 'j$')
self.assertIn('dictionary', to_store)
from_store = field.to_python(to_store)
self.assertEqual(from_store, {'a': 'dictionary'})
def test_long_json(self):
"""Long JSON objects _do_ get compressed, in addition to being
invertible"""
field = CompressedJSONField()
value = {'key': 'value'*1000}
to_store = field.get_prep_value(value)
self.assertEqual(to_store[:4], 'jb6$')
self.assertNotIn('value', to_store) # because it's been compressed
self.assertTrue(len(to_store) < 1000)
from_store = field.to_python(to_store)
self.assertEqual(from_store, value)