def test_is_called_every_interval(self):
clock = Clock()
service = DHCPProbeService(sentinel.service, clock)
# Avoid actually probing
probe_dhcp = self.patch(service, "probe_dhcp")
# Until the service has started, periodicprobe_dhcp() won't
# be called.
self.assertThat(probe_dhcp, MockNotCalled())
# The first call is issued at startup.
service.startService()
self.assertThat(probe_dhcp, MockCalledOnceWith())
# Wind clock forward one second less than the desired interval.
clock.advance(service.check_interval - 1)
# No more periodic calls made.
self.assertEqual(1, len(get_mock_calls(probe_dhcp)))
# Wind clock forward one second, past the interval.
clock.advance(1)
# Now there were two calls.
self.assertThat(get_mock_calls(probe_dhcp), HasLength(2))
def test_is_called_every_interval(self):
clock = Clock()
service = ImageDownloadService(sentinel.service, sentinel.tftp_root,
clock)
# Avoid actual downloads:
self.patch_download(service, None)
maas_meta_last_modified = self.patch(tftppath,
"maas_meta_last_modified")
maas_meta_last_modified.return_value = None
service.startService()
# The first call is issued at startup.
self.assertEqual(1, len(get_mock_calls(maas_meta_last_modified)))
# Wind clock forward one second less than the desired interval.
clock.advance(service.check_interval - 1)
# No more periodic calls made.
self.assertEqual(1, len(get_mock_calls(maas_meta_last_modified)))
# Wind clock forward one second, past the interval.
clock.advance(1)
# Now there were two calls.
self.assertEqual(2, len(get_mock_calls(maas_meta_last_modified)))
# Forward another interval, should be three calls.
clock.advance(service.check_interval)
self.assertEqual(3, len(get_mock_calls(maas_meta_last_modified)))