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import os
import tempfile
from landscape.monitor.temperature import Temperature
from landscape.lib.tests.test_sysstats import ThermalZoneTest
from landscape.tests.helpers import MonitorHelper
from landscape.tests.mocker import ANY
class TemperatureTestWithSampleData(ThermalZoneTest):
"""Tests for the temperature plugin."""
helpers = [MonitorHelper]
def setUp(self):
"""Initialize test helpers and create a sample thermal zone."""
super(TemperatureTestWithSampleData, self).setUp()
self.mstore.set_accepted_types(["temperature"])
self.write_thermal_zone("ZONE1", "50 C")
def test_wb_disabled_with_no_thermal_zones(self):
"""
When no thermal zones are available /proc/acpi/thermal_zone
will be empty. In this case, the plugin won't register itself
to respond to client events such as exchange.
"""
thermal_zone_path = tempfile.mkdtemp()
os.rmdir(thermal_zone_path)
plugin = Temperature(thermal_zone_path=thermal_zone_path)
self.assertEquals(plugin._thermal_zones, [])
def test_no_messages_without_thermal_zones(self):
"""
Messages should never be generated by the plugin when no
thermal zones are available.
"""
thermal_zone_path = self.make_dir()
plugin = Temperature(interval=1, thermal_zone_path=thermal_zone_path)
self.monitor.add(plugin)
self.reactor.advance(self.monitor.step_size)
self.assertEquals(len(self.mstore.get_pending_messages()), 0)
def test_disjointed_thermal_zone_temperature_changes(self):
"""
Changing data needs to be tracked according to the thermal
zone the data is for. This test ensures that the plugin
creates messages with changes reported correctly.
"""
self.write_thermal_zone("ZONE2", "50 C")
plugin = Temperature(thermal_zone_path=self.thermal_zone_path,
create_time=self.reactor.time)
step_size = self.monitor.step_size
self.monitor.add(plugin)
self.reactor.advance(step_size)
self.write_thermal_zone("ZONE2", "56 C")
self.reactor.advance(step_size)
messages = list(plugin.create_messages())
self.assertEquals(len(messages), 2)
self.assertEquals(messages[0]["thermal-zone"], "ZONE1")
self.assertEquals(len(messages[0]["temperatures"]), 2)
self.assertEquals(messages[0]["temperatures"][0],
(step_size, 50.0))
self.assertEquals(messages[0]["temperatures"][1],
(step_size * 2, 50.0))
self.assertEquals(messages[1]["thermal-zone"], "ZONE2")
self.assertEquals(len(messages[1]["temperatures"]), 2)
self.assertEquals(messages[1]["temperatures"][0],
(step_size, 50.0))
self.assertEquals(messages[1]["temperatures"][1],
(step_size * 2, 56.0))
def test_messaging_flushes(self):
"""
Duplicate message should never be created. If no data is
available, a message with an empty C{temperatures} list is
expected.
"""
plugin = Temperature(thermal_zone_path=self.thermal_zone_path,
create_time=self.reactor.time)
self.monitor.add(plugin)
self.reactor.advance(self.monitor.step_size)
messages = plugin.create_messages()
self.assertEquals(len(messages), 1)
messages = plugin.create_messages()
self.assertEquals(len(messages), 0)
def test_never_exchange_empty_messages(self):
"""
The plugin will only create messages when data is available.
If no data is available when an exchange occurs no messages
should not be queued.
"""
self.write_thermal_zone("ZONE2", "50 C")
plugin = Temperature(thermal_zone_path=self.thermal_zone_path,
create_time=self.reactor.time)
step_size = self.monitor.step_size
self.monitor.add(plugin)
self.assertEquals(len(self.mstore.get_pending_messages()), 0)
def test_exchange_messages(self):
"""
The temperature plugin queues message when an exchange
happens. Each message should be aligned to a step boundary;
messages collected bewteen exchange periods should be
delivered in a single message.
"""
self.write_thermal_zone("ZONE2", "50 C")
plugin = Temperature(thermal_zone_path=self.thermal_zone_path,
create_time=self.reactor.time)
step_size = self.monitor.step_size
self.monitor.add(plugin)
self.reactor.advance(step_size)
self.monitor.exchange()
self.assertMessages(self.mstore.get_pending_messages(),
[{"type": "temperature",
"thermal-zone": "ZONE1",
"temperatures": [(step_size, 50.0)]},
{"type": "temperature",
"thermal-zone": "ZONE2",
"temperatures": [(step_size, 50.0)]}])
def test_no_messages_on_bad_values(self):
"""
If the temperature is in an unknown format, the plugin won't
break and no messages are sent.
"""
self.write_thermal_zone("ZONE1", "UNKNOWN C")
plugin = Temperature(thermal_zone_path=self.thermal_zone_path,
create_time=self.reactor.time)
step_size = self.monitor.step_size
self.monitor.add(plugin)
self.reactor.advance(step_size)
self.monitor.exchange()
self.assertMessages(self.mstore.get_pending_messages(), [])
def test_call_on_accepted(self):
plugin = Temperature(thermal_zone_path=self.thermal_zone_path,
create_time=self.reactor.time)
self.monitor.add(plugin)
self.reactor.advance(plugin.registry.step_size)
remote_broker_mock = self.mocker.replace(self.remote)
remote_broker_mock.send_message(ANY, urgent=True)
self.mocker.replay()
self.reactor.fire(("message-type-acceptance-changed", "temperature"),
True)
def test_no_message_if_not_accepted(self):
"""
Don't add any messages at all if the broker isn't currently
accepting their type.
"""
self.mstore.set_accepted_types([])
plugin = Temperature(thermal_zone_path=self.thermal_zone_path,
create_time=self.reactor.time)
self.monitor.add(plugin)
self.reactor.advance(self.monitor.step_size * 2)
self.monitor.exchange()
self.mstore.set_accepted_types(["temperature"])
self.assertMessages(list(self.mstore.get_pending_messages()), [])
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