def test_fail_writing_health_check(self, mocked_log, mocked_open):
"""Test that a failure to open the health check file is logged, but otherwise ignored."""
mocked_open.side_effect = io_error = OSError("Some error")
record_health()
mocked_log.assert_called_once_with(
"Could not write health check time stamp to %s: %s", self.filename,
io_error)
def test_writing_health_check(self, mocked_datetime, mocked_open):
"""Test that the current time is written to the health check file."""
mocked_datetime.now.return_value = now = datetime.now()
record_health()
mocked_open.assert_called_once_with(self.filename, "w")
mocked_open().write.assert_called_once_with(now.isoformat())