Source Code for Module sparked.test.test_monitor

 1  # Copyright (c) 2010 Arjan Scherpenisse 
 2  # See LICENSE for details. 
 3   
 4  """ 
 5  Tests for sparked.monitors.* 
 6   
 7  Maintainer: Arjan Scherpenisse 
 8  """ 
 9   
10  from twisted.trial import unittest 
11   
12  from sparked import monitors 
13   
14 -class TestMonitorContainer(unittest.TestCase): 
15      """ 
16      Test the L{sparked.monitors.MonitorContainer} 
17      """ 
18   
19 -    def testAddRemove(self): 
20          """ 
21          Whether the "updated" signal comes in when a monitor changes state. 
22          """ 
23          self.pinged = 0 
24           
25          class FooMonitor(monitors.Monitor): 
26              pass 
27   
28          container = monitors.MonitorContainer() 
29   
30          def ping(c): 
31              self.pinged += 1 
32              self.assertEquals(c, container) 
33   
34          container.events.addObserver("updated", ping) 
35   
36          a = FooMonitor() 
37          container.addMonitor(a) 
38          self.assertEquals(self.pinged, 1) 
39          self.assertEquals(container.monitors, [a]) 
40           
41          b = FooMonitor() 
42          container.addMonitor(b) 
43          self.assertEquals(self.pinged, 2) 
44          self.assertEquals(container.monitors, [a, b]) 
45   
46          container.removeMonitor(a) 
47          self.assertEquals(self.pinged, 3) 
48          self.assertEquals(container.monitors, [b]) 
49