Repository navigation
Expand file tree
/
Copy pathtest_ModelicaSystem.py
More file actions
409 lines (366 loc) · 12 KB
/
Copy pathtest_ModelicaSystem.py
File metadata and controls
409 lines (366 loc) · 12 KB
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
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
import OMPython
import os
import pathlib
import pytest
import tempfile
import numpy as np
@pytest.fixture
def model_firstorder(tmp_path):
mod = tmp_path / "M.mo"
mod.write_text("""model M
Real x(start = 1, fixed = true);
parameter Real a = -1;
equation
der(x) = x*a;
end M;
""")
return mod
def test_ModelicaSystem_loop(model_firstorder):
def worker():
filePath = model_firstorder.as_posix()
m = OMPython.ModelicaSystem(filePath, "M")
m.simulate()
m.convertMo2Fmu(fmuType="me")
for _ in range(10):
worker()
def test_setParameters():
omc = OMPython.OMCSessionZMQ()
model_path = omc.sendExpression("getInstallationDirectoryPath()") + "/share/doc/omc/testmodels/"
mod = OMPython.ModelicaSystem(model_path + "BouncingBall.mo", "BouncingBall")
# method 1
mod.setParameters("e=1.234")
mod.setParameters("g=321.0")
assert mod.getParameters("e") == ["1.234"]
assert mod.getParameters("g") == ["321.0"]
assert mod.getParameters() == {
"e": "1.234",
"g": "321.0",
}
with pytest.raises(KeyError):
mod.getParameters("thisParameterDoesNotExist")
# method 2
mod.setParameters(["e=21.3", "g=0.12"])
assert mod.getParameters() == {
"e": "21.3",
"g": "0.12",
}
assert mod.getParameters(["e", "g"]) == ["21.3", "0.12"]
assert mod.getParameters(["g", "e"]) == ["0.12", "21.3"]
with pytest.raises(KeyError):
mod.getParameters(["g", "thisParameterDoesNotExist"])
def test_setSimulationOptions():
omc = OMPython.OMCSessionZMQ()
model_path = omc.sendExpression("getInstallationDirectoryPath()") + "/share/doc/omc/testmodels/"
mod = OMPython.ModelicaSystem(fileName=model_path + "BouncingBall.mo", modelName="BouncingBall")
# method 1
mod.setSimulationOptions("stopTime=1.234")
mod.setSimulationOptions("tolerance=1.1e-08")
assert mod.getSimulationOptions("stopTime") == ["1.234"]
assert mod.getSimulationOptions("tolerance") == ["1.1e-08"]
assert mod.getSimulationOptions(["tolerance", "stopTime"]) == ["1.1e-08", "1.234"]
d = mod.getSimulationOptions()
assert isinstance(d, dict)
assert d["stopTime"] == "1.234"
assert d["tolerance"] == "1.1e-08"
with pytest.raises(KeyError):
mod.getSimulationOptions("thisOptionDoesNotExist")
# method 2
mod.setSimulationOptions(["stopTime=2.1", "tolerance=1.2e-08"])
d = mod.getSimulationOptions()
assert d["stopTime"] == "2.1"
assert d["tolerance"] == "1.2e-08"
def test_relative_path(model_firstorder):
cwd = pathlib.Path.cwd()
(fd, name) = tempfile.mkstemp(prefix='tmpOMPython.tests', dir=cwd, text=True)
try:
with os.fdopen(fd, 'w') as f:
f.write(model_firstorder.read_text())
model_file = pathlib.Path(name).relative_to(cwd)
model_relative = str(model_file)
assert "/" not in model_relative
mod = OMPython.ModelicaSystem(fileName=model_relative, modelName="M")
assert float(mod.getParameters("a")[0]) == -1
finally:
model_file.unlink() # clean up the temporary file
def test_customBuildDirectory(tmp_path, model_firstorder):
filePath = model_firstorder.as_posix()
tmpdir = tmp_path / "tmpdir1"
tmpdir.mkdir()
m = OMPython.ModelicaSystem(filePath, "M", customBuildDirectory=tmpdir)
assert m.getWorkDirectory().resolve() == tmpdir.resolve()
result_file = tmpdir / "a.mat"
assert not result_file.exists()
m.simulate(resultfile="a.mat")
assert result_file.is_file()
def test_getSolutions(model_firstorder):
filePath = model_firstorder.as_posix()
mod = OMPython.ModelicaSystem(filePath, "M")
x0 = 1
a = -1
tau = -1 / a
stopTime = 5*tau
mod.setSimulationOptions([f"stopTime={stopTime}", "stepSize=0.1", "tolerance=1e-8"])
mod.simulate()
x = mod.getSolutions("x")
t, x2 = mod.getSolutions(["time", "x"])
assert (x2 == x).all()
sol_names = mod.getSolutions()
assert isinstance(sol_names, tuple)
assert "time" in sol_names
assert "x" in sol_names
assert "der(x)" in sol_names
with pytest.raises(OMPython.ModelicaSystemError):
mod.getSolutions("thisVariableDoesNotExist")
assert np.isclose(t[0], 0), "time does not start at 0"
assert np.isclose(t[-1], stopTime), "time does not end at stopTime"
x_analytical = x0 * np.exp(a*t)
assert np.isclose(x, x_analytical, rtol=1e-4).all()
def test_getters(tmp_path):
model_file = tmp_path / "M_getters.mo"
model_file.write_text("""
model M_getters
Real x(start = 1, fixed = true);
output Real y "the derivative";
parameter Real a = -0.5;
parameter Real b = 0.1;
equation
der(x) = x*a + b;
y = der(x);
end M_getters;
""")
mod = OMPython.ModelicaSystem(fileName=model_file.as_posix(), modelName="M_getters")
q = mod.getQuantities()
assert isinstance(q, list)
assert sorted(q, key=lambda d: d["name"]) == sorted([
{
'alias': 'noAlias',
'aliasvariable': None,
'causality': 'local',
'changeable': 'true',
'description': None,
'max': None,
'min': None,
'name': 'x',
'start': '1.0',
'unit': None,
'variability': 'continuous',
},
{
'alias': 'noAlias',
'aliasvariable': None,
'causality': 'local',
'changeable': 'false',
'description': None,
'max': None,
'min': None,
'name': 'der(x)',
'start': None,
'unit': None,
'variability': 'continuous',
},
{
'alias': 'noAlias',
'aliasvariable': None,
'causality': 'output',
'changeable': 'false',
'description': 'the derivative',
'max': None,
'min': None,
'name': 'y',
'start': '-0.4',
'unit': None,
'variability': 'continuous',
},
{
'alias': 'noAlias',
'aliasvariable': None,
'causality': 'parameter',
'changeable': 'true',
'description': None,
'max': None,
'min': None,
'name': 'a',
'start': '-0.5',
'unit': None,
'variability': 'parameter',
},
{
'alias': 'noAlias',
'aliasvariable': None,
'causality': 'parameter',
'changeable': 'true',
'description': None,
'max': None,
'min': None,
'name': 'b',
'start': '0.1',
'unit': None,
'variability': 'parameter',
}
], key=lambda d: d["name"])
assert mod.getQuantities("y") == [
{
'alias': 'noAlias',
'aliasvariable': None,
'causality': 'output',
'changeable': 'false',
'description': 'the derivative',
'max': None,
'min': None,
'name': 'y',
'start': '-0.4',
'unit': None,
'variability': 'continuous',
}
]
assert mod.getQuantities(["y", "x"]) == [
{
'alias': 'noAlias',
'aliasvariable': None,
'causality': 'output',
'changeable': 'false',
'description': 'the derivative',
'max': None,
'min': None,
'name': 'y',
'start': '-0.4',
'unit': None,
'variability': 'continuous',
},
{
'alias': 'noAlias',
'aliasvariable': None,
'causality': 'local',
'changeable': 'true',
'description': None,
'max': None,
'min': None,
'name': 'x',
'start': '1.0',
'unit': None,
'variability': 'continuous',
},
]
with pytest.raises(KeyError):
mod.getQuantities("thisQuantityDoesNotExist")
assert mod.getInputs() == {}
with pytest.raises(KeyError):
mod.getInputs("thisInputDoesNotExist")
# getOutputs before simulate()
assert mod.getOutputs() == {'y': '-0.4'}
assert mod.getOutputs("y") == ["-0.4"]
assert mod.getOutputs(["y", "y"]) == ["-0.4", "-0.4"]
with pytest.raises(KeyError):
mod.getOutputs("thisOutputDoesNotExist")
# getContinuous before simulate():
assert mod.getContinuous() == {
'x': '1.0',
'der(x)': None,
'y': '-0.4'
}
assert mod.getContinuous("y") == ['-0.4']
assert mod.getContinuous(["y", "x"]) == ['-0.4', '1.0']
with pytest.raises(KeyError):
mod.getContinuous("a") # a is a parameter
stopTime = 1.0
a = -0.5
b = 0.1
x0 = 1.0
x_analytical = -b/a + (x0 + b/a) * np.exp(a * stopTime)
dx_analytical = (x0 + b/a) * a * np.exp(a * stopTime)
mod.setSimulationOptions(f"stopTime={stopTime}")
mod.simulate()
# getOutputs after simulate()
d = mod.getOutputs()
assert d.keys() == {"y"}
assert np.isclose(d["y"], dx_analytical, 1e-4)
assert mod.getOutputs("y") == [d["y"]]
assert mod.getOutputs(["y", "y"]) == [d["y"], d["y"]]
with pytest.raises(KeyError):
mod.getOutputs("thisOutputDoesNotExist")
# getContinuous after simulate() should return values at end of simulation:
with pytest.raises(OMPython.ModelicaSystemError):
mod.getContinuous("a") # a is a parameter
with pytest.raises(OMPython.ModelicaSystemError):
mod.getContinuous(["x", "a", "y"]) # a is a parameter
d = mod.getContinuous()
assert d.keys() == {"x", "der(x)", "y"}
assert np.isclose(d["x"], x_analytical, 1e-4)
assert np.isclose(d["der(x)"], dx_analytical, 1e-4)
assert np.isclose(d["y"], dx_analytical, 1e-4)
assert mod.getContinuous("x") == [d["x"]]
assert mod.getContinuous(["y", "x"]) == [d["y"], d["x"]]
with pytest.raises(OMPython.ModelicaSystemError):
mod.getContinuous("a") # a is a parameter
with pytest.raises(OMPython.ModelicaSystemError):
mod.setSimulationOptions("thisOptionDoesNotExist=3")
def test_simulate_inputs(tmp_path):
model_file = tmp_path / "M_input.mo"
model_file.write_text("""
model M_input
Real x(start=0, fixed=true);
input Real u1;
input Real u2;
output Real y;
equation
der(x) = u1 + u2;
y = x;
end M_input;
""")
mod = OMPython.ModelicaSystem(fileName=model_file.as_posix(), modelName="M_input")
mod.setSimulationOptions("stopTime=1.0")
# integrate zero (no setInputs call) - it should default to None -> 0
assert mod.getInputs() == {
"u1": None,
"u2": None,
}
mod.simulate()
y = mod.getSolutions("y")[0]
assert np.isclose(y[-1], 0.0)
# integrate a constant
mod.setInputs("u1=2.5")
assert mod.getInputs() == {
"u1": [
(0.0, 2.5),
(1.0, 2.5),
],
"u2": None,
}
mod.simulate()
y = mod.getSolutions("y")[0]
assert np.isclose(y[-1], 2.5)
# now let's integrate the sum of two ramps
mod.setInputs("u1=[(0.0, 0.0), (0.5, 2), (1.0, 0)]")
assert mod.getInputs("u1") == [[
(0.0, 0.0),
(0.5, 2.0),
(1.0, 0.0),
]]
mod.simulate()
y = mod.getSolutions("y")[0]
assert np.isclose(y[-1], 1.0)
# let's try some edge cases
# unmatched startTime
with pytest.raises(OMPython.ModelicaSystemError):
mod.setInputs("u1=[(-0.5, 0.0), (1.0, 1)]")
mod.simulate()
# unmatched stopTime
with pytest.raises(OMPython.ModelicaSystemError):
mod.setInputs("u1=[(0.0, 0.0), (0.5, 1)]")
mod.simulate()
# Let's use both inputs, but each one with different number of of
# samples. This has an effect when generating the csv file.
mod.setInputs([
"u1=[(0.0, 0), (1.0, 1)]",
"u2=[(0.0, 0), (0.25, 0.5), (0.5, 1.0), (1.0, 0)]",
])
csv_file = mod._createCSVData()
assert pathlib.Path(csv_file).read_text() == """time,u1,u2,end
0.0,0.0,0.0,0
0.25,0.25,0.5,0
0.5,0.5,1.0,0
1.0,1.0,0.0,0
"""
mod.simulate()
y = mod.getSolutions("y")[0]
assert np.isclose(y[-1], 1.0)