| 1 |
|
#! /usr/bin/env python
|
| 2 |
|
#Here's the code for the unit tests, which also serves as usage examples. It should go in a file named test_observer.py:
|
| 3 |
|
import unittest
|
| 4 |
|
from observer import Observable, Observer
|
| 5 |
|
|
| 6 |
|
EVENT_FOO, EVENT_UPDATE = range(2)
|
| 7 |
|
|
| 8 |
|
class Stuff(Observable):
|
| 9 |
|
|
| 10 |
|
def __init__(self):
|
| 11 |
|
Observable.__init__(self)
|
| 12 |
|
self._data = None
|
| 13 |
|
|
| 14 |
|
def setData(self, data):
|
| 15 |
|
self._data = data
|
| 16 |
|
self.notifyObservers(None, data)
|
| 17 |
|
|
| 18 |
|
def setDataWithUpdateEvent(self, data):
|
| 19 |
|
self._data = data
|
| 20 |
|
self.notifyObservers(EVENT_UPDATE, data)
|
| 21 |
|
|
| 22 |
|
def setDataWithFooEvent(self, data):
|
| 23 |
|
self._data = data
|
| 24 |
|
self.notifyObservers(EVENT_FOO, data)
|
| 25 |
|
|
| 26 |
|
|
| 27 |
|
class StuffWatcher(Observer):
|
| 28 |
|
|
| 29 |
|
def __init__(self, observable=None, cbname=None, events=None):
|
| 30 |
|
Observer.__init__(self, observable, cbname, events)
|
| 31 |
|
self._data = None
|
| 32 |
|
self._updateData = None
|
| 33 |
|
self._reportData = None
|
| 34 |
|
|
| 35 |
|
def update(self, observable, event, msg):
|
| 36 |
|
self._data = msg
|
| 37 |
|
self._updateData = msg
|
| 38 |
|
|
| 39 |
|
def report(self, observable, event, msg):
|
| 40 |
|
self._data = msg
|
| 41 |
|
self._reportData = msg
|
| 42 |
|
|
| 43 |
|
|
| 44 |
|
class TestCase_01_Observer(unittest.TestCase):
|
| 45 |
|
|
| 46 |
|
def test_01_noMethod(self):
|
| 47 |
|
observable = Stuff()
|
| 48 |
|
observer1 = StuffWatcher(observable, "foo")
|
| 49 |
|
self.assertRaises(NotImplementedError, observable.setData, 10)
|
| 50 |
|
|
| 51 |
|
def test_02_simple(self):
|
| 52 |
|
|
| 53 |
|
observable = Stuff()
|
| 54 |
|
observer1 = StuffWatcher(observable)
|
| 55 |
|
observer2 = StuffWatcher(observable)
|
| 56 |
|
self.assertEqual(len(observable._observers), 2)
|
| 57 |
|
|
| 58 |
|
observable.setData(10)
|
| 59 |
|
self.assertEqual(observer1._data, 10)
|
| 60 |
|
self.assertEqual(observer2._data, 10)
|
| 61 |
|
|
| 62 |
|
observable.setData(20)
|
| 63 |
|
self.assertEqual(observer1._data, 20)
|
| 64 |
|
self.assertEqual(observer2._data, 20)
|
| 65 |
|
|
| 66 |
|
del observer1
|
| 67 |
|
self.assertEqual(len(observable._observers), 1)
|
| 68 |
|
|
| 69 |
|
observable.setData(30)
|
| 70 |
|
self.assertEqual(observer2._data, 30)
|
| 71 |
|
|
| 72 |
|
observer3 = StuffWatcher()
|
| 73 |
|
self.assertEqual(len(observable._observers), 1)
|
| 74 |
|
observer3.subscribeToObservable(observable)
|
| 75 |
|
self.assertEqual(len(observable._observers), 2)
|
| 76 |
|
|
| 77 |
|
observable.setData(40)
|
| 78 |
|
self.assertEqual(observer2._data, 40)
|
| 79 |
|
self.assertEqual(observer3._data, 40)
|
| 80 |
|
|
| 81 |
|
del observer2
|
| 82 |
|
self.assertEqual(len(observable._observers), 1)
|
| 83 |
|
|
| 84 |
|
observable.setData(50)
|
| 85 |
|
self.assertEqual(observer3._data, 50)
|
| 86 |
|
|
| 87 |
|
def test_03_specificEvents(self):
|
| 88 |
|
|
| 89 |
|
observable = Stuff()
|
| 90 |
|
observer1 = StuffWatcher(observable, events=EVENT_UPDATE)
|
| 91 |
|
observer2 = StuffWatcher(observable, events=EVENT_FOO)
|
| 92 |
|
|
| 93 |
|
observable.setDataWithUpdateEvent(10)
|
| 94 |
|
self.assertEqual(observer1._data, 10)
|
| 95 |
|
self.assertEqual(observer2._data, None)
|
| 96 |
|
|
| 97 |
|
observable = Stuff()
|
| 98 |
|
observer1 = StuffWatcher(observable, events=(EVENT_UPDATE, EVENT_FOO))
|
| 99 |
|
|
| 100 |
|
observable.setDataWithUpdateEvent(10)
|
| 101 |
|
self.assertEqual(observer1._data, 10)
|
| 102 |
|
|
| 103 |
|
observable.setDataWithFooEvent(20)
|
| 104 |
|
self.assertEqual(observer1._data, 20)
|
| 105 |
|
|
| 106 |
|
def test_03_multipleObservables(self):
|
| 107 |
|
observable1 = Stuff()
|
| 108 |
|
observable2 = Stuff()
|
| 109 |
|
observer = StuffWatcher()
|
| 110 |
|
|
| 111 |
|
observer.subscribeToObservable(observable1, "update", EVENT_UPDATE)
|
| 112 |
|
observer.subscribeToObservable(observable2, "report", EVENT_FOO)
|
| 113 |
|
self.assertEqual(len(observable1._observers), 1)
|
| 114 |
|
self.assertEqual(len(observable2._observers), 1)
|
| 115 |
|
|
| 116 |
|
observable1.setDataWithUpdateEvent(10)
|
| 117 |
|
self.assertEqual(observer._data, 10)
|
| 118 |
|
self.assertEqual(observer._updateData, 10)
|
| 119 |
|
self.assertEqual(observer._reportData, None)
|
| 120 |
|
|
| 121 |
|
observable1.setDataWithFooEvent(20)
|
| 122 |
|
self.assertEqual(observer._data, 10)
|
| 123 |
|
self.assertEqual(observer._updateData, 10)
|
| 124 |
|
self.assertEqual(observer._reportData, None)
|
| 125 |
|
|
| 126 |
|
observable2.setDataWithUpdateEvent(30)
|
| 127 |
|
self.assertEqual(observer._data, 10)
|
| 128 |
|
self.assertEqual(observer._updateData, 10)
|
| 129 |
|
self.assertEqual(observer._reportData, None)
|
| 130 |
|
|
| 131 |
|
observable2.setDataWithFooEvent(40)
|
| 132 |
|
self.assertEqual(observer._data, 40)
|
| 133 |
|
self.assertEqual(observer._updateData, 10)
|
| 134 |
|
self.assertEqual(observer._reportData, 40)
|
| 135 |
|
|
| 136 |
|
|
| 137 |
|
if __name__ == "__main__":
|
| 138 |
|
unittest.main()
|
| |
1 |
#! /usr/bin/env python
|
| |
2 |
#Here's the code for the unit tests, which also serves as usage examples. It should go in a file named test_observer.py:
|
| |
3 |
import unittest
|
| |
4 |
from observer import Observable, Observer
|
| |
5 |
|
| |
6 |
EVENT_FOO, EVENT_UPDATE = range(2)
|
| |
7 |
|
| |
8 |
class Stuff(Observable):
|
| |
9 |
|
| |
10 |
def __init__(self):
|
| |
11 |
Observable.__init__(self)
|
| |
12 |
self._data = None
|
| |
13 |
|
| |
14 |
def setData(self, data):
|
| |
15 |
self._data = data
|
| |
16 |
self.notifyObservers(None, data)
|
| |
17 |
|
| |
18 |
def setDataWithUpdateEvent(self, data):
|
| |
19 |
self._data = data
|
| |
20 |
self.notifyObservers(EVENT_UPDATE, data)
|
| |
21 |
|
| |
22 |
def setDataWithFooEvent(self, data):
|
| |
23 |
self._data = data
|
| |
24 |
self.notifyObservers(EVENT_FOO, data)
|
| |
25 |
|
| |
26 |
|
| |
27 |
class StuffWatcher(Observer):
|
| |
28 |
|
| |
29 |
def __init__(self, observable=None, cbname=None, events=None):
|
| |
30 |
Observer.__init__(self, observable, cbname, events)
|
| |
31 |
self._data = None
|
| |
32 |
self._updateData = None
|
| |
33 |
self._reportData = None
|
| |
34 |
|
| |
35 |
def update(self, observable, event, msg):
|
| |
36 |
self._data = msg
|
| |
37 |
self._updateData = msg
|
| |
38 |
|
| |
39 |
def report(self, observable, event, msg):
|
| |
40 |
self._data = msg
|
| |
41 |
self._reportData = msg
|
| |
42 |
|
| |
43 |
|
| |
44 |
class TestCase_01_Observer(unittest.TestCase):
|
| |
45 |
|
| |
46 |
def test_01_noMethod(self):
|
| |
47 |
observable = Stuff()
|
| |
48 |
observer1 = StuffWatcher(observable, "foo")
|
| |
49 |
self.assertRaises(NotImplementedError, observable.setData, 10)
|
| |
50 |
|
| |
51 |
def test_02_simple(self):
|
| |
52 |
|
| |
53 |
observable = Stuff()
|
| |
54 |
observer1 = StuffWatcher(observable)
|
| |
55 |
observer2 = StuffWatcher(observable)
|
| |
56 |
self.assertEqual(len(observable._observers), 2)
|
| |
57 |
|
| |
58 |
observable.setData(10)
|
| |
59 |
self.assertEqual(observer1._data, 10)
|
| |
60 |
self.assertEqual(observer2._data, 10)
|
| |
61 |
|
| |
62 |
observable.setData(20)
|
| |
63 |
self.assertEqual(observer1._data, 20)
|
| |
64 |
self.assertEqual(observer2._data, 20)
|
| |
65 |
|
| |
66 |
del observer1
|
| |
67 |
self.assertEqual(len(observable._observers), 1)
|
| |
68 |
|
| |
69 |
observable.setData(30)
|
| |
70 |
self.assertEqual(observer2._data, 30)
|
| |
71 |
|
| |
72 |
observer3 = StuffWatcher()
|
| |
73 |
self.assertEqual(len(observable._observers), 1)
|
| |
74 |
observer3.subscribeToObservable(observable)
|
| |
75 |
self.assertEqual(len(observable._observers), 2)
|
| |
76 |
|
| |
77 |
observable.setData(40)
|
| |
78 |
self.assertEqual(observer2._data, 40)
|
| |
79 |
self.assertEqual(observer3._data, 40)
|
| |
80 |
|
| |
81 |
del observer2
|
| |
82 |
self.assertEqual(len(observable._observers), 1)
|
| |
83 |
|
| |
84 |
observable.setData(50)
|
| |
85 |
self.assertEqual(observer3._data, 50)
|
| |
86 |
|
| |
87 |
def test_03_specificEvents(self):
|
| |
88 |
|
| |
89 |
observable = Stuff()
|
| |
90 |
observer1 = StuffWatcher(observable, events=EVENT_UPDATE)
|
| |
91 |
observer2 = StuffWatcher(observable, events=EVENT_FOO)
|
| |
92 |
|
| |
93 |
observable.setDataWithUpdateEvent(10)
|
| |
94 |
self.assertEqual(observer1._data, 10)
|
| |
95 |
self.assertEqual(observer2._data, None)
|
| |
96 |
|
| |
97 |
observable = Stuff()
|
| |
98 |
observer1 = StuffWatcher(observable, events=(EVENT_UPDATE, EVENT_FOO))
|
| |
99 |
|
| |
100 |
observable.setDataWithUpdateEvent(10)
|
| |
101 |
self.assertEqual(observer1._data, 10)
|
| |
102 |
|
| |
103 |
observable.setDataWithFooEvent(20)
|
| |
104 |
self.assertEqual(observer1._data, 20)
|
| |
105 |
|
| |
106 |
def test_03_multipleObservables(self):
|
| |
107 |
observable1 = Stuff()
|
| |
108 |
observable2 = Stuff()
|
| |
109 |
observer = StuffWatcher()
|
| |
110 |
|
| |
111 |
observer.subscribeToObservable(observable1, "update", EVENT_UPDATE)
|
| |
112 |
observer.subscribeToObservable(observable2, "report", EVENT_FOO)
|
| |
113 |
self.assertEqual(len(observable1._observers), 1)
|
| |
114 |
self.assertEqual(len(observable2._observers), 1)
|
| |
115 |
|
| |
116 |
observable1.setDataWithUpdateEvent(10)
|
| |
117 |
self.assertEqual(observer._data, 10)
|
| |
118 |
self.assertEqual(observer._updateData, 10)
|
| |
119 |
self.assertEqual(observer._reportData, None)
|
| |
120 |
|
| |
121 |
observable1.setDataWithFooEvent(20)
|
| |
122 |
self.assertEqual(observer._data, 10)
|
| |
123 |
self.assertEqual(observer._updateData, 10)
|
| |
124 |
self.assertEqual(observer._reportData, None)
|
| |
125 |
|
| |
126 |
observable2.setDataWithUpdateEvent(30)
|
| |
127 |
self.assertEqual(observer._data, 10)
|
| |
128 |
self.assertEqual(observer._updateData, 10)
|
| |
129 |
self.assertEqual(observer._reportData, None)
|
| |
130 |
|
| |
131 |
observable2.setDataWithFooEvent(40)
|
| |
132 |
self.assertEqual(observer._data, 40)
|
| |
133 |
self.assertEqual(observer._updateData, 10)
|
| |
134 |
self.assertEqual(observer._reportData, 40)
|
| |
135 |
|
| |
136 |
|
| |
137 |
if __name__ == "__main__":
|
| |
138 |
unittest.main()
|