docker based unit test with python

docker_test.py

import unittest
from datetime import datetime
import docker


class DocerBasedTest(unittest.TestCase):
    @classmethod
    def setUpClass(cls):
        container_name = "test-mysql-" + datetime.now().strftime('%y%m%d%H%M%s')
        client = docker.from_env()
        api_client = docker.APIClient(base_url='unix://var/run/docker.sock')
        client.containers.run("mysql:5.7.25", detach=True, name=container_name,
                              ports={'3306/tcp': None})
        cls._mysql_container = client.containers.get(container_name)
        ports = api_client.inspect_container(cls._mysql_container.id)['NetworkSettings']['Ports']
        cls._mysql_connection_url = "localhost:{}".format(ports['3306/tcp'][0]['HostPort'])
        cls._client = client

    @classmethod
    def tearDownClass(cls):
        cls._mysql_container.remove(force=True)
        cls._client.close()

    def test_method1(self):
        print("mysql connection url is {}".format(self._mysql_connection_url))
        self.assertEqual(1, 1, "this is an equal test")


if __name__ == '__main__':
    unittest.main()

docker python api is based on https://docker-py.readthedocs.io/en/stable/