tests/integration/api_client_test.py

import time
import unittest
import warnings

import docker
from docker.utils import kwargs_from_env

from .base import BaseAPIIntegrationTest


class InformationTest(BaseAPIIntegrationTest):
    def test_version(self):
        res = self.client.version()
        assert 'GoVersion' in res
        assert 'Version' in res

    def test_info(self):
        res = self.client.info()
        assert 'Containers' in res
        assert 'Images' in res
        assert 'Debug' in res


class AutoDetectVersionTest(unittest.TestCase):
    def test_client_init(self):
        client = docker.APIClient(version='auto', **kwargs_from_env())
        client_version = client._version
        api_version = client.version(api_version=False)['ApiVersion']
        assert client_version == api_version
        api_version_2 = client.version()['ApiVersion']
        assert client_version == api_version_2
        client.close()


class ConnectionTimeoutTest(unittest.TestCase):
    def setUp(self):
        self.timeout = 0.5
        self.client = docker.api.APIClient(
            version=docker.constants.MINIMUM_DOCKER_API_VERSION,
            base_url='http://192.168.10.2:4243',
            timeout=self.timeout
        )

    def test_timeout(self):
        start = time.time()
        res = None
        # This call isn't supposed to complete, and it should fail fast.
        try:
            res = self.client.inspect_container('id')
        except:  # noqa: E722
            pass
        end = time.time()
        assert res is None
        assert end - start < 2 * self.timeout


class UnixconnTest(unittest.TestCase):
    """
    Test UNIX socket connection adapter.
    """

    def test_resource_warnings(self):
        """
        Test no warnings are produced when using the client.
        """

        with warnings.catch_warnings(record=True) as w:
            warnings.simplefilter('always')

            client = docker.APIClient(version='auto', **kwargs_from_env())
            client.images()
            client.close()
            del client

            assert len(w) == 0, "No warnings produced: {0}".format(
                w[0].message
            )