def test_json_freeze(self):

        self.find_in_migration("'data':", (
            "('django_pg.models.fields.json.JSONField', [], {",
        ))
Test that JSON fields are frozen as I expect.
dataset/ETHPy150Open lukesneeringer/django-pgfields/tests/south_migrations/tests.py/MigrationCreationSuite.test_json_freeze