def testunit_assert_collectd_responds_WHEN_filesystem_is_readonly(
self, mock_access):
# Mock out os.access to guarantee that write access is rejected.
mock_access.return_value = False
with self.assertRaises(check_collectd_mlab.ReadonlyFilesystemError):
check_collectd_mlab.assert_collectd_responds()
self.assertTrue(mock_access.called)
def testunit_assert_collectd_responds_WHEN_sock_readline_fails(
self, mock_sock_connect):
"""Fails when reading from socket after a successful connection."""
# After sending a default reply, the fake socket reaches EOF.
mock_sock_connect.return_value = FakeSocketIO('1 default reply\n')
with self.assertRaises(check_collectd_mlab.SocketReadlineError):
check_collectd_mlab.assert_collectd_responds()
mock_sock_connect.assert_called_with(
check_collectd_mlab.COLLECTD_UNIXSOCK)
def testunit_assert_collectd_responds_WHEN_sock_sendcmd_fails(
self, mock_sock_connect):
"""Fails when sending a command after successfully creating a connection."""
mock_sock = mock.Mock(spec_set=socket.socket)
mock_sock.send.side_effect = socket.error('fake socket error')
mock_sock_connect.return_value = mock_sock
with self.assertRaises(check_collectd_mlab.SocketSendCommandError):
check_collectd_mlab.assert_collectd_responds()
mock_sock_connect.assert_called_with(
check_collectd_mlab.COLLECTD_UNIXSOCK)
def testunit_assert_collectd_responds_WHEN_sock_connect_fails(self):
"""Fails when creating a socket connection."""
check_collectd_mlab.COLLECTD_UNIXSOCK = 'does_not_exist'
with self.assertRaises(check_collectd_mlab.SocketConnectionError):
check_collectd_mlab.assert_collectd_responds()