Python unittest decorator to skip tests is Alembic script revision criteria is not met.

alembic_minimum_revision.py

from unittest import skipUnless
from alembic.config import Config
from alembic.script import ScriptDirectory

"""
Usage:

    @minimum_revision_satisfied("5aa2dfb6e6a8")
    def test_database_function(self):
        pass
"""

def minimum_revision_satisfied(revision):
    def is_satisfied(revision):
        config = Config("alembic.ini")
        script = ScriptDirectory.from_config(config)
        head = script.get_current_head()

        for script in script.iterate_revisions(head, None):
            if script.revision == revision:
                return True
        return False

    return skipUnless(is_satisfied(revision), "Minimum revision {0} not satisfied".format(revision))