Another shot at this problem ..

settings_test_snippet.py

class DisableMigrations(dict):
    def __contains__(self, item):
        return True

    def __getitem__(self, item):
        return None

DATABASES = DisableMigrations()

MIGRATION_MODULES = DisableMigrations()

Migrations for django 1.10 has two part,please look at load_disk and recorder

The part of load_disk is for migrations of app model
And the part of recorder for database connection
For the version before 1.9 we need set MIGRATION_MODULES={'do.not.migrate':'notmigrations'} when you are running test
Now we need set it None like MIGRATION_MODULES={'do.not.migrate':None}
So if we do not want make migrations for any app, just subclass a dict and return None for getitem function , and do the same of DATABASES, that is the right thing you need

PS: For command, you need to specify --setting=module.path.settings_test_snippet after test
PPS If you are working at pycharm ,do not set --settings options at Run/Debug configurations, just add path of settings_test_snippet.py at Custom setting. That just be fine!!

enjoy