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https://gitlab.gnome.org/GNOME/glib.git
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e1819c42fb
We were lucky that this worked in some cases (the test is racy), but we
should actually run the condition check each loop, rather than when the
function is called.
Spotted by Martin Pitt:
96a8c02d24 (r54773831)
116 lines
4.1 KiB
Python
Executable File
116 lines
4.1 KiB
Python
Executable File
#!/usr/bin/python3
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU Lesser General Public License as published by the Free
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# Software Foundation; either version 3 of the License, or (at your option) any
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# later version. See http://www.gnu.org/copyleft/lgpl.html for the full text
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# of the license.
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__author__ = 'Bastien Nocera'
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__email__ = 'hadess@hadess.net'
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__copyright__ = '(c) 2019 Red Hat Inc.'
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__license__ = 'LGPL 3+'
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import unittest
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import sys
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import subprocess
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import fcntl
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import os
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import time
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import taptestrunner
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try:
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# Do all non-standard imports here so we can skip the tests if any
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# needed packages are not available.
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import dbus
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import dbus.mainloop.glib
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import dbusmock
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from gi.repository import GLib
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from gi.repository import Gio
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dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
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class TestLowMemoryMonitor(dbusmock.DBusTestCase):
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'''Test GMemoryMonitorDBus'''
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@classmethod
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def setUpClass(klass):
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klass.start_system_bus()
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klass.dbus_con = klass.get_dbus(True)
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def setUp(self):
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try:
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Gio.MemoryMonitor
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except AttributeError:
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raise unittest.SkipTest('Low memory monitor not in '
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'introspection data. Requires '
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'GObject-Introspection ≥ 1.63.2')
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try:
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(self.p_mock, self.obj_lmm) = self.spawn_server_template(
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'low_memory_monitor', {}, stdout=subprocess.PIPE)
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except ModuleNotFoundError:
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raise unittest.SkipTest("Low memory monitor dbusmock template not "
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"found. Requires dbusmock ≥ 0.18.4.")
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# set log to nonblocking
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flags = fcntl.fcntl(self.p_mock.stdout, fcntl.F_GETFL)
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fcntl.fcntl(self.p_mock.stdout, fcntl.F_SETFL, flags | os.O_NONBLOCK)
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self.last_warning = -1
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self.dbusmock = dbus.Interface(self.obj_lmm, dbusmock.MOCK_IFACE)
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self.memory_monitor = Gio.MemoryMonitor.dup_default()
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self.memory_monitor.connect("low-memory-warning", self.memory_warning_cb)
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self.mainloop = GLib.MainLoop()
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self.main_context = self.mainloop.get_context()
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def tearDown(self):
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self.p_mock.terminate()
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self.p_mock.wait()
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def assertEventually(self, condition, message=None, timeout=50):
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'''Assert that condition function eventually returns True.
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Timeout is in deciseconds, defaulting to 50 (5 seconds). message is
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printed on failure.
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'''
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while timeout >= 0:
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context = GLib.MainContext.default()
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while context.iteration(False):
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pass
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if condition():
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break
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timeout -= 1
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time.sleep(0.1)
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else:
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self.fail(message or 'timed out waiting for ' + str(condition))
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def memory_warning_cb(self, monitor, level):
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self.last_warning = level
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self.main_context.wakeup()
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def test_low_memory_warning_signal(self):
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'''LowMemoryWarning signal'''
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# Wait 2 seconds
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timeout = 2
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while timeout > 0:
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time.sleep(0.5)
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timeout -= 0.5
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self.main_context.iteration(False)
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self.dbusmock.EmitWarning(100)
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# Wait 2 seconds or until warning
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self.assertEventually(lambda: self.last_warning == 100, "'100' low-memory warning not received", 20)
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self.dbusmock.EmitWarning(255)
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# Wait 2 seconds or until warning
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self.assertEventually(lambda: self.last_warning == 255, "'255' low-memory warning not received", 20)
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except ImportError as e:
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@unittest.skip("Cannot import %s" % e.name)
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class TestLowMemoryMonitor(unittest.TestCase):
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def test_low_memory_warning_signal(self):
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pass
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if __name__ == '__main__':
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unittest.main(testRunner=taptestrunner.TAPTestRunner())
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