/[escript]/trunk/escript/test/python/run_xml.py
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Contents of /trunk/escript/test/python/run_xml.py

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Revision 629 - (show annotations)
Thu Mar 23 02:41:25 2006 UTC (13 years, 7 months ago) by elspeth
Original Path: trunk/escript/test/python/test_xml.py
File MIME type: text/x-python
File size: 12256 byte(s)
Copyright information added.

1 #!/usr/bin/python
2
3 # $Id$
4 __copyright__=""" Copyright (c) 2006 by ACcESS MNRF
5 http://www.access.edu.au
6 Primary Business: Queensland, Australia"""
7 __license__="""Licensed under the Open Software License version 3.0
8 http://www.opensource.org/licenses/osl-3.0.php"""
9
10 import unittest
11 from esys.escript.modelframe import Model,Link,Simulation,ParameterSet,parse
12 import math
13 from cStringIO import StringIO
14 from xml.dom import minidom
15
16 class XMLDocumentTestCase(unittest.TestCase):
17
18 def setUp(self):
19
20 o1=ODETEST(debug=False)
21 o1.u=10
22 o2=ODETEST(debug=False)
23 o2.u=-10.
24 o1.f=Link(o2,"u")
25 o2.f=Link(o1,"u")
26 m=Messenger()
27 o1.dt=0.01
28 m.message=Link(o1)
29 s=Simulation([o1,o2,m],debug=False)
30 s.run()
31 output = StringIO()
32 s.writeXML(output)
33 output.reset()
34 outputList = output.readlines()
35 self.xmlList = outputList
36
37 def testFirstLine(self):
38 firstLine = self.xmlList[0]
39 self.assertEqual('<?xml version="1.0" ?>\n', firstLine)
40
41 def testEsysHeader(self):
42 header = self.xmlList[1]
43 self.assertEqual('<ESys>\n', header)
44
45 def testEsysFooter(self):
46 footer = self.xmlList[-1]
47 self.assertEqual('</ESys>\n', footer)
48
49 def testSimulationHeader(self):
50 pass
51
52 def testSimulationFooter(self):
53 pass
54
55 class SimulationTestCase(unittest.TestCase):
56 def setUp(self):
57 o1=ODETEST(debug=False)
58 o1.u=10
59 o2=ODETEST(debug=False)
60 o2.u=-10.
61 o1.f=Link(o2,"u")
62 o2.f=Link(o1,"u")
63 m=Messenger()
64 o1.dt=0.01
65 m.message=Link(o1)
66 self.s=Simulation([o1,o2,m],debug=False)
67 self.s.run()
68 output = StringIO()
69 self.s.writeXML(output)
70 output.reset()
71 self.xml = output.read()
72
73 def testSimulation(self):
74 assert "<Simulation" in self.xml, "I should see a Simulation"
75
76 def testParseAndInstanceOfSimulation(self):
77
78 newSim = parse(self.xml)
79 assert (isinstance (newSim, Simulation))
80 newout = StringIO()
81 newSim.writeXML(newout)
82 newout.reset()
83 xml = newout.read()
84 assert '<Simulation' in xml, "Missing a Simulation! It should be in this!"
85
86
87
88
89 class LinkTestCase(unittest.TestCase):
90
91
92 def setUp(self):
93
94 self.o1=ODETEST(debug=False)
95 #self.o1.u=10
96 self.o2=ODETEST(debug=False)
97 self.o2.u=-10.
98 self.o1.f=Link(self.o2,"u")
99 self.o2.f=Link(self.o1,"u")
100 self.o2.declareParameter(child=self.o1)
101
102 def testLinkCreation(self):
103 self.o1.f=Link(self.o2,"u")
104 assert self.o1.f
105
106
107 def testLinkValue(self):
108 self.assertEqual(self.o1.f, -10)
109
110 def testLinkTarget(self):
111 pass
112
113 def testLinkDefaultAttribute(self):
114 Link(self.o2)
115
116 def testLinkXML(self):
117 s = StringIO()
118 self.o2.writeXML(s)
119 s.reset()
120 xmlout = s.read()
121 assert '<Link' in xmlout
122
123 def testLinkTargetXML(self):
124 pass
125
126 class ParamaterSetTestCase(unittest.TestCase):
127
128
129 def setUp(self):
130 self.p = ParameterSet()
131 self.p.declareParameter(gamma1=1.,gamma2=2.,gamma3=3.)
132
133 def testParameterSetCreation(self):
134 self.assertEqual(self.p.gamma1, 1.)
135
136 def testParameterSetXMLCreation(self):
137 s = StringIO()
138 self.p.writeXML(s)
139 s.reset()
140 xmlout = s.read()
141 assert ("gamma1" in xmlout)
142 assert ("gamma2" in xmlout)
143 assert ("gamma3" in xmlout)
144 parsable = parse(xmlout)
145 assert (isinstance (parsable, ParameterSet))
146 assert (self._dom().getElementsByTagName("ParameterSet"))
147
148 def testParameterSetFromXML(self):
149 doc = self._class()
150 pset = ParameterSet.fromDom(self._dom().getElementsByTagName("ParameterSet")[0])
151 assert (isinstance(pset, ParameterSet))
152 assert (isinstance(doc, ParameterSet))
153 self.assertEqual(self.p.gamma1,doc.gamma1)
154
155
156 def testParameterSetWithChildrenFromXML(self):
157 p2 = ParameterSet()
158 p2.declareParameter(s="abc", f=3.)
159 self.p.declareParameter(child=p2)
160 doc = self._class()
161 #pset = ParameterSet.fromDom(doc.getElementsByTagName("ParameterSet")[0])
162 self.assertEqual(self.p.child.f, doc.child.f)
163
164 def testParameterSetChild(self):
165 p2 = ParameterSet()
166 p2.declareParameter(s="abc", f=3.)
167 self.p.declareParameter(child=p2)
168 self.assertEqual(self.p.child.s, "abc")
169 self.assertEqual(self.p.child.f, 3.)
170
171 def _dom(self):
172 s = StringIO()
173 self.p.writeXML(s)
174 s.reset()
175 xmlout = s.read()
176 doc = minidom.parseString(xmlout)
177 return doc
178
179 def _class(self):
180 s = StringIO()
181 self.p.writeXML(s)
182 s.reset()
183 xmlout = s.read()
184 doc = parse(xmlout)
185 return doc
186
187 class ModeltoDomTestCase(unittest.TestCase):
188
189 def _class(self):
190 # returns a modelframe class, generated from the xml
191 s = StringIO()
192 self.o1.writeXML(s)
193 s.reset()
194 self.xmlout = s.read()
195 doc = parse(self.xmlout)
196 return doc
197
198 def _dom(self):
199 # returns a minidom dom element, generated from the xml
200 s = StringIO()
201 self.o1.writeXML(s)
202 s.reset()
203 self.xmlout = s.read()
204 doc = minidom.parseString(self.xmlout)
205 return doc
206
207 def setUp(self):
208 self.o1=ODETEST(debug=False)
209 self.o1.message='blah'
210
211 def testModelExists(self):
212 modeldoc = self._class()
213 assert (isinstance, (modeldoc, Model))
214 assert self._dom().getElementsByTagName("Model")
215
216 def testModelhasID(self):
217 assert int(self._dom().getElementsByTagName("Model")[0].getAttribute("id"))>99
218
219 class ModeltoDomTestCase(unittest.TestCase):
220 def _xml(self, modulename, modelname):
221 # returns a modelframe class, generated from the xml
222 return '''<?xml version="1.0" ?>
223 <ESys> <Simulation type="Simulation"> <Component rank="0">
224
225 <Model id="127" module="%s" type="%s">
226
227 <Parameter type="float"> <Name> a </Name> <Value> 0.9 </Value> </Parameter>
228 <Parameter type="Link"> <Name> f </Name> <Value> <Link> <Target> 128 </Target>
229 <Attribute> u </Attribute> </Link> </Value> </Parameter> <Parameter
230 type="float"> <Name> tend </Name> <Value>
231 1.0 </Value> </Parameter> <Parameter type="int"> <Name> u </Name> <Value> 10
232 </Value> </Parameter> <Parameter type="float"> <Name> tol </Name> <Value>
233 1e-08 </Value> </Parameter> <Parameter type="float"> <Name> dt </Name>
234 <Value>
235 0.01 </Value> </Parameter> <Parameter type="str"> <Name> message </Name>
236 <Value> current error = 9.516258e-01 </Value> </Parameter> </Model>
237 </Component> <Component rank="1"> <Model id="128" type="ODETEST"> <Parameter
238 type="float"> <Name> a </Name> <Value>
239 0.9 </Value> </Parameter> <Parameter type="Link"> <Name> f </Name> <Value>
240 <Link> <Target> 127 </Target> <Attribute> u </Attribute> </Link> </Value>
241 </Parameter> <Parameter type="float"> <Name> tend </Name> <Value>
242 1.0 </Value> </Parameter> <Parameter type="float"> <Name> u </Name> <Value>
243 -10.0 </Value> </Parameter> <Parameter type="float"> <Name> tol </Name>
244 <Value> 1e-08 </Value> </Parameter> <Parameter type="float"> <Name> dt
245 </Name> <Value>
246 0.1 </Value> </Parameter> <Parameter type="str"> <Name> message </Name> <Value>
247 current error = 1.904837e+01 </Value> </Parameter> </Model> </Component>
248 <Component rank="2"> <Model id="129" type="Messenger"> <Parameter
249 type="Link"> <Name> message </Name> <Value> <Link> <Target> 127 </Target>
250 <Attribute> message </Attribute> </Link> </Value> </Parameter> </Model>
251 </Component> </Simulation> <Model id="128" type="ODETEST"> <Parameter
252 type="float"> <Name> a </Name> <Value>
253 0.9 </Value> </Parameter> <Parameter type="Link"> <Name> f </Name> <Value>
254 <Link> <Target> 127 </Target> <Attribute> u </Attribute> </Link> </Value>
255 </Parameter> <Parameter type="float"> <Name> tend </Name> <Value>
256 1.0 </Value> </Parameter> <Parameter type="float"> <Name> u </Name> <Value>
257 -10.0 </Value> </Parameter> <Parameter type="float"> <Name> tol </Name>
258 <Value> 1e-08 </Value> </Parameter> <Parameter type="float"> <Name> dt
259 </Name> <Value>
260 0.1 </Value> </Parameter> <Parameter type="str"> <Name> message </Name> <Value>
261 current error = 1.904837e+01 </Value> </Parameter> </Model> <Model id="127"
262 type="ODETEST"> <Parameter type="float"> <Name> a </Name> <Value>
263 0.9 </Value> </Parameter> <Parameter type="Link"> <Name> f </Name> <Value>
264 <Link> <Target> 128 </Target> <Attribute> u </Attribute> </Link> </Value>
265 </Parameter> <Parameter type="float"> <Name> tend </Name> <Value>
266 1.0 </Value> </Parameter> <Parameter type="int"> <Name> u </Name> <Value> 10
267 </Value> </Parameter> <Parameter type="float"> <Name> tol </Name> <Value>
268 1e-08 </Value> </Parameter> <Parameter type="float"> <Name> dt </Name>
269 <Value>
270 0.01 </Value> </Parameter> <Parameter type="str"> <Name> message </Name>
271 <Value> current error = 9.516258e-01 </Value> </Parameter> </Model> <Model
272 id="127" type="ODETEST"> <Parameter type="float"> <Name> a </Name> <Value>
273 0.9 </Value> </Parameter> <Parameter type="Link"> <Name> f </Name> <Value>
274 <Link> <Target> 128 </Target> <Attribute> u </Attribute> </Link> </Value>
275 </Parameter> <Parameter type="float"> <Name> tend </Name> <Value>
276 1.0 </Value> </Parameter> <Parameter type="int"> <Name> u </Name> <Value> 10
277 </Value> </Parameter> <Parameter type="float"> <Name> tol </Name> <Value>
278 1e-08 </Value> </Parameter> <Parameter type="float"> <Name> dt </Name>
279 <Value>
280 0.01 </Value> </Parameter> <Parameter type="str"> <Name> message </Name>
281 <Value> current error = 9.516258e-01 </Value> </Parameter> </Model> </ESys>
282 ''' % (modulename, modelname)
283
284 def testModuleAttribute(self):
285 modeldoc = parse(self._xml('test_xml', 'ODETEST'))
286
287 def testModuleAttributeFails(self):
288 try:
289 modeldoc = parse(self._xml('a', 'b'))
290 except ImportError:
291 return # correct
292
293 assert False, "This test should have resulted in an ImportError"
294
295 class Messenger(Model):
296 def __init__(self, *args, **kwargs):
297 Model.__init__(self, *args, **kwargs)
298 self.declareParameter(message="none")
299
300 def doInitialization(self):
301 self.__t=0
302 #print "I start talking now!"
303
304 def doStepPostprocessing(self,dt):
305 self.__t+=dt
306 #print "Message (time %e) : %s "%(self.__t,self.message)
307
308 def doFinalization(self):
309 #print "I have no more to say!"
310 pass
311
312
313
314 class ODETEST(Model):
315 """ implements a solver for the ODE
316
317 du/dt=a*u+f(t)
318
319 we use a implicit euler scheme :
320
321 u_n-u_{n-1}= dt*a u_n + st*f(t_n)
322
323 to get u_n we run an iterative process
324
325 u_{n.k}=u_{n-1}+dt*(a u_{n.i-1} + f(t_n))
326
327
328 input for this model are step size dt, end time tend and a value for
329 a, f and initial value for u. we need also a tolerance tol for a
330 stopping criterion.
331
332 """
333
334 def __init__(self, *args, **kwargs):
335 Model.__init__(self, *args, **kwargs)
336 self.declareParameter(tend=1.,dt=0.1,a=0.9,u=10.,f=0.,message="",tol=1.e-8)
337
338 def doInitialization(self):
339 self.__tn=0
340 self.__iter=0
341
342 def doStepPreprocessing(self,dt):
343 self.__iter=0
344 self.__u_last=self.u
345
346 def doStep(self,dt):
347 self.__iter+=1
348 self.__u_old=self.u
349 self.u=self.__u_last+dt*(self.a*self.__u_old+self.f)
350
351 def terminate(self):
352 if self.__iter<1:
353 return False
354 else:
355 return abs(self.__u_old-self.u)<self.tol*abs(self.u)
356
357 def doStepPostprocessing(self,dt):
358 self.__tn+=dt
359 self.message="current error = %e"%abs(self.u-10.*math.exp((self.a-1.)*self.__tn))
360
361 def getSafeTimeStepSize(self,dt):
362 return min(self.dt,1./(abs(self.a)+1.))
363
364 def finalize(self):
365 return self.__tn>=self.tend
366
367
368
369 if __name__ == "__main__":
370 from test_xml import Messenger, ODETEST
371 unittest.main()
372

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