docker-compose/tests/cli_test.py

from __future__ import unicode_literals
from __future__ import absolute_import
from .testcases import DockerClientTestCase
from mock import patch
from six import StringIO
from fig.cli.main import TopLevelCommand

class CLITestCase(DockerClientTestCase):
    def setUp(self):
        super(CLITestCase, self).setUp()
        self.command = TopLevelCommand()
        self.command.base_dir = 'tests/fixtures/simple-figfile'

    def tearDown(self):
        self.command.project.kill()
        self.command.project.remove_stopped()

    def test_help(self):
        self.assertRaises(SystemExit, lambda: self.command.dispatch(['-h'], None))

    @patch('sys.stdout', new_callable=StringIO)
    def test_ps(self, mock_stdout):
        self.command.project.get_service('simple').create_container()
        self.command.dispatch(['ps'], None)
        self.assertIn('fig_simple_1', mock_stdout.getvalue())

    def test_scale(self):
        project = self.command.project

        self.command.scale({'SERVICE=NUM': ['simple=1']})
        self.assertEqual(len(project.get_service('simple').containers()), 1)

        self.command.scale({'SERVICE=NUM': ['simple=3', 'another=2']})
        self.assertEqual(len(project.get_service('simple').containers()), 3)
        self.assertEqual(len(project.get_service('another').containers()), 2)

        self.command.scale({'SERVICE=NUM': ['simple=1', 'another=1']})
        self.assertEqual(len(project.get_service('simple').containers()), 1)
        self.assertEqual(len(project.get_service('another').containers()), 1)

        self.command.scale({'SERVICE=NUM': ['simple=1', 'another=1']})
        self.assertEqual(len(project.get_service('simple').containers()), 1)
        self.assertEqual(len(project.get_service('another').containers()), 1)

        self.command.scale({'SERVICE=NUM': ['simple=0', 'another=0']})
        self.assertEqual(len(project.get_service('simple').containers()), 0)
        self.assertEqual(len(project.get_service('another').containers()), 0)