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
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
|
import pytest
def test_operator_and(env):
def process(env):
timeout = [env.timeout(delay, value=delay) for delay in range(3)]
results = yield timeout[0] & timeout[1] & timeout[2]
assert results == {
timeout[0]: 0,
timeout[1]: 1,
timeout[2]: 2,
}
env.process(process(env))
env.run()
def test_operator_and_blocked(env):
def process(env):
timeout = env.timeout(1)
event = env.event()
yield env.timeout(1)
condition = timeout & event
assert not condition.triggered
env.process(process(env))
env.run()
def test_operator_or(env):
def process(env):
timeout = [env.timeout(delay, value=delay) for delay in range(3)]
results = yield timeout[0] | timeout[1] | timeout[2]
assert results == {
timeout[0]: 0,
}
env.process(process(env))
env.run()
def test_operator_nested_and(env):
def process(env):
timeout = [env.timeout(delay, value=delay) for delay in range(3)]
results = yield (timeout[0] & timeout[2]) | timeout[1]
assert results == {
timeout[0]: 0,
timeout[1]: 1,
}
assert env.now == 1
env.process(process(env))
env.run()
def test_operator_nested_or(env):
def process(env):
timeout = [env.timeout(delay, value=delay) for delay in range(3)]
results = yield (timeout[0] | timeout[1]) & timeout[2]
assert results == {
timeout[0]: 0,
timeout[1]: 1,
timeout[2]: 2,
}
assert env.now == 2
env.process(process(env))
env.run()
def test_nested_cond_with_error(env):
def explode(env):
yield env.timeout(1)
raise ValueError('Onoes!')
def process(env):
try:
yield env.process(explode(env)) & env.timeout(1)
pytest.fail('The condition should have raised a ValueError')
except ValueError as err:
assert err.args == ('Onoes!',)
env.process(process(env))
env.run()
def test_cond_with_error(env):
def explode(env, delay):
yield env.timeout(delay)
raise ValueError('Onoes, failed after %d!' % delay)
def process(env):
try:
yield env.process(explode(env, 0)) | env.timeout(1)
pytest.fail('The condition should have raised a ValueError')
except ValueError as err:
assert err.args == ('Onoes, failed after 0!',)
env.process(process(env))
env.run()
def test_cond_with_nested_error(env):
def explode(env, delay):
yield env.timeout(delay)
raise ValueError('Onoes, failed after %d!' % delay)
def process(env):
try:
yield (env.process(explode(env, 0)) & env.timeout(1) |
env.timeout(1))
pytest.fail('The condition should have raised a ValueError')
except ValueError as err:
assert err.args == ('Onoes, failed after 0!',)
env.process(process(env))
env.run()
def test_cond_with_uncaught_error(env):
"""Errors that happen after the condition has been triggered will not be
handled by the condition and cause the simulation to crash."""
def explode(env, delay):
yield env.timeout(delay)
raise ValueError('Onoes, failed after %d!' % delay)
def process(env):
yield env.timeout(1) | env.process(explode(env, 2))
env.process(process(env))
try:
env.run()
assert False, 'There should have been an exception.'
except ValueError:
pass
assert env.now == 2
def test_iand_with_and_cond(env):
def process(env):
cond = env.timeout(1, value=1) & env.timeout(2, value=2)
orig = cond
cond &= env.timeout(0, value=0)
assert cond is not orig
results = yield cond
assert list(results.values()) == [1, 2, 0]
env.process(process(env))
env.run()
def test_iand_with_or_cond(env):
def process(env):
cond = env.timeout(1, value=1) | env.timeout(2, value=2)
orig = cond
cond &= env.timeout(0, value=0)
assert cond is not orig
results = yield cond
assert list(results.values()) == [1, 0]
env.process(process(env))
env.run()
def test_ior_with_or_cond(env):
def process(env):
cond = env.timeout(1, value=1) | env.timeout(2, value=2)
orig = cond
cond |= env.timeout(0, value=0)
assert cond is not orig
results = yield cond
assert list(results.values()) == [0]
env.process(process(env))
env.run()
def test_ior_with_and_cond(env):
def process(env):
cond = env.timeout(1, value=1) & env.timeout(2, value=2)
orig = cond
cond |= env.timeout(0, value=0)
assert cond is not orig
results = yield cond
assert list(results.values()) == [0]
env.process(process(env))
env.run()
def test_immutable_results(env):
"""Results of conditions should not change after they have been
triggered."""
def process(env):
timeout = [env.timeout(delay, value=delay) for delay in range(3)]
# The or condition in this expression will trigger immediately. The and
# condition will trigger later on.
condition = timeout[0] | (timeout[1] & timeout[2])
results = yield condition
assert results == {timeout[0]: 0}
# Make sure that the results of condition were frozen. The results of
# the nested and condition do not become visible afterwards.
yield env.timeout(2)
assert results == {timeout[0]: 0}
env.process(process(env))
env.run()
def test_shared_and_condition(env):
timeout = [env.timeout(delay, value=delay) for delay in range(3)]
c1 = timeout[0] & timeout[1]
c2 = c1 & timeout[2]
def p1(env, condition):
results = yield condition
assert results == {timeout[0]: 0, timeout[1]: 1}
def p2(env, condition):
results = yield condition
assert results == {timeout[0]: 0, timeout[1]: 1, timeout[2]: 2}
env.process(p1(env, c1))
env.process(p2(env, c2))
env.run()
def test_shared_or_condition(env):
timeout = [env.timeout(delay, value=delay) for delay in range(3)]
c1 = timeout[0] | timeout[1]
c2 = c1 | timeout[2]
def p1(env, condition):
results = yield condition
assert results == {timeout[0]: 0}
def p2(env, condition):
results = yield condition
assert results == {timeout[0]: 0}
env.process(p1(env, c1))
env.process(p2(env, c2))
env.run()
def test_condition_value(env):
"""The value of a condition behaves like a readonly dictionary."""
timeouts = list([env.timeout(delay, value=delay) for delay in range(3)])
def p(env, timeouts):
results = yield env.all_of(timeouts)
assert list(results) == timeouts
assert list(results.keys()) == timeouts
assert list(results.values()) == [0, 1, 2]
assert list(results.items()) == list(zip(timeouts, [0, 1, 2]))
assert timeouts[0] in results
assert results[timeouts[0]] == 0
assert results == results
assert results == results.todict()
env.process(p(env, timeouts))
env.run()
def test_result_order(env):
"""The order of a conditions result is based on the order in which the
events have been specified."""
timeouts = list(reversed([env.timeout(delay) for delay in range(3)]))
def p(env, timeouts):
results = yield env.all_of(timeouts)
assert list(results.keys()) == timeouts
env.process(p(env, timeouts))
env.run()
def test_nested_result_order(env):
"""The order of a conditions result is based on the order in which the
events have been specified (even if nested)."""
timeouts = [env.timeout(delay) for delay in range(3)]
condition = (timeouts[0] | timeouts[1]) & timeouts[2]
def p(env, timeouts):
results = yield condition
assert list(results.keys()) == timeouts
env.process(p(env, timeouts))
env.run()
def test_all_of_empty_list(env):
"""AllOf with an empty list should immediately be triggered."""
evt = env.all_of([])
assert evt.triggered
def test_any_of_empty_list(env):
"""AnyOf with an empty list should immediately be triggered."""
evt = env.any_of([])
assert evt.triggered
|
