# Sleep for a couple of seconds so the mail can get delivered.

    time.sleep(5)

    with Sudo():

        mail_log = File('/var/log/mail.log')

        # First extract message ID of forwarded mail.

        pattern = "%s: to=<web-parameters-optional_local@localhost>.*status=sent \(forwarded as ([^)]*)\)" % message_id

        message_id = re.search(pattern, mail_log.content).group(1)

        # Now try to determine where the forward ended-up at.

        pattern = "%s: to=<user@wsgi-website>, orig_to=<web-parameters-optional_local@localhost>.*status=sent" % message_id

        assert re.search(pattern, mail_log.content) is not None

def test_installed_packages(Package):

    """

    Tests if additional packages are installed.

    """

    assert Package('libmariadb-client-lgpl-dev-compat').is_installed

    assert Package('global').is_installed

def test_mariadb_compat_symlink(File):

    """

    Tests if compatibility symlink is set-up for mysql_config binary if

    libmariadb-client-lgpl-dev-compat is installed.

    """

    link = File('/usr/bin/mysql_config')

    assert link.is_symlink

    assert link.linked_to == "/usr/bin/mariadb_config"

def test_python_virtualenv_created(File, Sudo):

    """

    Tests if Python virtual environment has been created correctly.

    """

    with Sudo():

        virtualenv = File("/var/www/parameters-optional.local/virtualenv")

        assert virtualenv.is_directory

        assert virtualenv.user == 'admin-parameters-optional_local'

        assert virtualenv.group == 'web-parameters-optional_local'

        assert virtualenv.mode == 0o2750

        virtualenv_activate = File("/var/www/parameters-optional.local/virtualenv/bin/activate")

        assert virtualenv_activate.is_file

        assert virtualenv_activate.user == 'admin-parameters-optional_local'

        assert virtualenv_activate.group == 'web-parameters-optional_local'

        assert virtualenv_activate.mode == 0o644

def test_python_virtualenv_project_directory_config(File, Sudo):

    """

    Tests if project directory configuration within virtualenv is set-up

    correctly.

    """

    with Sudo():

        project = File("/var/www/parameters-optional.local/virtualenv/.project")

        assert project.is_file

        assert project.user == 'admin-parameters-optional_local'

        assert project.group == 'web-parameters-optional_local'

        assert project.mode == 0o640

def test_python_virtualenv_wrapper_script(Command, File, Sudo):

    """

    Tests if Python virtualenv wrapper script is functioning correctly.

    """

    with Sudo():

        wrapper = File("/var/www/parameters-optional.local/virtualenv/bin/exec")

        assert wrapper.is_file

        assert wrapper.user == 'admin-parameters-optional_local'

        assert wrapper.group == 'web-parameters-optional_local'

        assert wrapper.mode == 0o750

        command = Command("sudo -u admin-parameters-optional_local /var/www/parameters-optional.local/virtualenv/bin/exec python -c 'import gunicorn'")

        assert command.rc == 0

def test_virtualenv_packages(Command):

    """

    Tests if correct packages are installed in virtualenv.

    """

    packages = Command("sudo -u admin-parameters-optional_local /var/www/parameters-optional.local/virtualenv/bin/pip freeze")

argparse==1.2.1

dnspython==1.15.0

docopt==0.6.2

futures==3.1.0

gunicorn==19.7.0

jedi==0.13.1

parso==0.3.1

prompt-toolkit==1.0.15

ptpython==0.41

six==1.11.0

wcwidth==0.1.7

wsgiref==0.1.2""".lower().split("\n"))

def test_wsgi_requirements_upgrade_checks(File, Sudo):

    """

    Tests if Python requirements files for upgrade checks are set-up correctly.

    """

    with Sudo():

        directory = File('/etc/pip_check_requirements_upgrades/parameters-optional.local')

        assert not directory.exists

def test_systemd_socket_configuration_file(File):

    """

    Tests if systemd socket configuration file has been set-up correctly.

    """

    config = File("/etc/systemd/system/parameters-optional.local.socket")

    assert config.is_file

    assert config.user == 'root'

    assert config.group == 'root'

    assert config.mode == 0o644

    assert "Socket for website parameters-optional.local" in config.content

    assert "ListenStream=/run/wsgi/parameters-optional.local.sock" in config.content

def test_systemd_socket(File, Socket, Sudo):

    """

    Tests if systemd socket has correct permissions and is available.

    """

    with Sudo():

        socket_file = File("/run/wsgi/parameters-optional.local.sock")

        assert socket_file.is_socket

        assert socket_file.user == 'www-data'

        assert socket_file.group == 'www-data'

        assert socket_file.mode == 0o660

        socket = Socket("unix:///run/wsgi/parameters-optional.local.sock")

        assert socket.is_listening

def test_systemd_service_configuration_file(File):

    """

    Tests if systemd service configuration file has been set-up correctly.

    """

    config = File("/etc/systemd/system/parameters-optional.local.service")

    assert config.is_file

    assert config.user == 'root'

    assert config.group == 'root'

    assert config.mode == 0o644

    assert "parameters-optional.local" in config.content

def test_systemd_service(Service):

    """

    Tests if the systemd service is enabled at boot and running.

    """

    service = Service('parameters-optional.local')

    assert service.is_enabled

    assert service.is_running

def test_static_file_directory(File, Sudo):

    """

    Tests if directory for serving static files has been created correctly.

    """

    with Sudo():

        directory = File('/var/www/parameters-optional.local/htdocs')

        assert directory.is_directory

        assert directory.user == 'admin-parameters-optional_local'

        assert directory.group == 'web-parameters-optional_local'

        assert directory.mode == 0o2750

def test_nginx_tls_files(File, Sudo):

    """

    Tests if TLS private key and certificate have been deployed correctly.