1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
import unittest
import reactivex
from reactivex import operators as ops
from reactivex.testing import ReactiveTest, TestScheduler
on_next = ReactiveTest.on_next
on_completed = ReactiveTest.on_completed
on_error = ReactiveTest.on_error
subscribe = ReactiveTest.subscribe
subscribed = ReactiveTest.subscribed
disposed = ReactiveTest.disposed
created = ReactiveTest.created
class TestWhile(unittest.TestCase):
def test_while_always_false(self):
scheduler = TestScheduler()
xs = scheduler.create_cold_observable(
on_next(50, 1),
on_next(100, 2),
on_next(150, 3),
on_next(200, 4),
on_completed(250),
)
def create():
return xs.pipe(ops.while_do(lambda _: False))
results = scheduler.start(create)
assert results.messages == [on_completed(200)]
assert xs.subscriptions == []
def test_while_always_true(self):
scheduler = TestScheduler()
xs = scheduler.create_cold_observable(
on_next(50, 1),
on_next(100, 2),
on_next(150, 3),
on_next(200, 4),
on_completed(250),
)
def create():
return xs.pipe(ops.while_do(lambda _: True))
results = scheduler.start(create)
assert results.messages == [
on_next(250, 1),
on_next(300, 2),
on_next(350, 3),
on_next(400, 4),
on_next(500, 1),
on_next(550, 2),
on_next(600, 3),
on_next(650, 4),
on_next(750, 1),
on_next(800, 2),
on_next(850, 3),
on_next(900, 4),
]
assert xs.subscriptions == [
subscribe(200, 450),
subscribe(450, 700),
subscribe(700, 950),
subscribe(950, 1000),
]
def test_while_always_true_on_error(self):
ex = "ex"
scheduler = TestScheduler()
xs = scheduler.create_cold_observable(on_error(50, ex))
def create():
return xs.pipe(ops.while_do(lambda _: True))
results = scheduler.start(create)
assert results.messages == [on_error(250, ex)]
assert xs.subscriptions == [subscribe(200, 250)]
def test_while_always_true_infinite(self):
scheduler = TestScheduler()
xs = scheduler.create_cold_observable(on_next(50, 1))
def create():
return xs.pipe(ops.while_do(lambda _: True))
results = scheduler.start(create)
assert results.messages == [on_next(250, 1)]
assert xs.subscriptions == [subscribe(200, 1000)]
def test_dowhile_always_true_infinite_with_create(self):
scheduler = TestScheduler()
n = [0]
def create():
def predicate(x):
n[0] += 1
return n[0] < 100
def subscribe(o, scheduler=None):
o.on_next(1)
o.on_completed()
return lambda: None
return reactivex.create(subscribe).pipe(ops.while_do(predicate))
results = scheduler.start(create=create)
assert results.messages == [on_next(200, 1) for _ in range(99)] + [
on_completed(200)
]
def test_while_sometimes_true(self):
scheduler = TestScheduler()
xs = scheduler.create_cold_observable(
on_next(50, 1),
on_next(100, 2),
on_next(150, 3),
on_next(200, 4),
on_completed(250),
)
n = [0]
def create():
def predicate(x):
n[0] += 1
return n[0] < 3
return xs.pipe(ops.while_do(predicate))
results = scheduler.start(create)
assert results.messages == [
on_next(250, 1),
on_next(300, 2),
on_next(350, 3),
on_next(400, 4),
on_next(500, 1),
on_next(550, 2),
on_next(600, 3),
on_next(650, 4),
on_completed(700),
]
assert xs.subscriptions == [subscribe(200, 450), subscribe(450, 700)]
def test_while_sometimes_throws(self):
scheduler = TestScheduler()
xs = scheduler.create_cold_observable(
on_next(50, 1),
on_next(100, 2),
on_next(150, 3),
on_next(200, 4),
on_completed(250),
)
n = [0]
ex = "ex"
def create():
def predicate(x):
n[0] += 1
if n[0] < 3:
return True
else:
raise Exception(ex)
return xs.pipe(ops.while_do(predicate))
results = scheduler.start(create)
assert results.messages == [
on_next(250, 1),
on_next(300, 2),
on_next(350, 3),
on_next(400, 4),
on_next(500, 1),
on_next(550, 2),
on_next(600, 3),
on_next(650, 4),
on_error(700, ex),
]
assert xs.subscriptions == [subscribe(200, 450), subscribe(450, 700)]
|
