| # Copyright 2017 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| from client.common_lib import error |
| from client.common_lib import utils as sys_utils |
| from client.cros import upstart |
| """Provides utility methods for CUPS.""" |
| |
| |
| def has_cups_upstart(): |
| """Returns True if cups is installed under upstart.""" |
| return upstart.has_service('cupsd') |
| |
| |
| def has_cups_systemd(): |
| """Returns True if cups is running under systemd. |
| |
| Attempts to start cups if it is not already running. |
| """ |
| return sys_utils.has_systemd() and ( |
| (sys_utils.get_service_pid('cups') != 0) or |
| (sys_utils.start_service('cups', ignore_status=True) == 0)) |
| |
| |
| def has_cups_or_die(): |
| """Checks if the cups dameon is installed. Raises TestNAError if it is not. |
| |
| TestNA skips the test. |
| """ |
| if not (has_cups_upstart() or has_cups_systemd()): |
| raise error.TestNAError('No cupsd service found') |
