/[thuban]/branches/WIP-pyshapelib-bramz/test/test_proj.py
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revision 1756 by bh, Fri Sep 26 14:03:51 2003 UTC revision 1793 by bh, Wed Oct 8 16:04:01 2003 UTC
# Line 21  import support Line 21  import support
21  support.initthuban()  support.initthuban()
22    
23  from Thuban import _  from Thuban import _
24  from Thuban.Model.proj import Projection, ProjFile  from Thuban.Model.proj import Projection, ProjFile, \
25         PROJ_UNITS_METERS, PROJ_UNITS_DEGREES
26    
27  import Thuban.Model.resource as resource  import Thuban.Model.resource as resource
28    
# Line 70  class TestProjection(unittest.TestCase, Line 71  class TestProjection(unittest.TestCase,
71          proj = Projection(params, "MyName")          proj = Projection(params, "MyName")
72          self.assertEquals(proj.GetName(), "MyName")          self.assertEquals(proj.GetName(), "MyName")
73    
74        def test_get_projection_units_geo(self):
75            """Test Projection.GetProjectedUnits() for geographic projection"""
76            proj = Projection(["proj=latlong", "to_meter=0.017453292519943295",
77                               "ellps=clrk66"])
78            self.assertEquals(proj.GetProjectedUnits(), PROJ_UNITS_DEGREES)
79    
80        def test_get_projection_units_normal(self):
81            """Test Projection.GetProjectedUnits() for normal projection"""
82            proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"])
83            self.assertEquals(proj.GetProjectedUnits(), PROJ_UNITS_METERS)
84    
85    
86  sample_projfile = '''\  sample_projfile = '''\
87  <?xml version="1.0" encoding="UTF-8"?>  <?xml version="1.0" encoding="UTF-8"?>
# Line 253  class TestProjFile(unittest.TestCase, su Line 265  class TestProjFile(unittest.TestCase, su
265          file.write(input)          file.write(input)
266          file.close()          file.close()
267    
268          pf = resource.read_proj_file(filename)          pf, warnings = resource.read_proj_file(filename)
269            self.assertEquals(warnings, [])
270    
271          eq = self.assertEquals          eq = self.assertEquals
272    
# Line 264  class TestProjFile(unittest.TestCase, su Line 277  class TestProjFile(unittest.TestCase, su
277              for param in proj.GetAllParameters():              for param in proj.GetAllParameters():
278                  self.assert_(param in d[1])                  self.assert_(param in d[1])
279    
280        def test_get_system_proj_file(self):
281            """Test resource.get_system_proj_file()
282    
283            This is primarily to test whether the system proj file contains
284            invalid projection paramers and whether the proj file is not
285            empty
286            """
287            projfile, warnings = resource.get_system_proj_file()
288            self.assertEquals(warnings, [])
289            self.assert_(len(projfile.GetProjections()) > 0)
290    
291    
292    class TestProjFileWithInvalidParameters(unittest.TestCase,
293                                            support.FileLoadTestCase):
294    
295        file_extension = ".proj"
296        file_contents = '''\
297    <?xml version="1.0" encoding="UTF-8"?>
298    <!DOCTYPE projectionlist SYSTEM "projfile.dtd">
299    <projectionlist>
300        <projection name="Universal Transverse Mercator">
301            <parameter value="proj=utm"/>
302            <parameter value="ellps=clrk66"/>
303            <!-- an invalid zone number to trigger the parameter checking
304                 in the proj library -->
305            <parameter value="zone=1000"/>
306        </projection>
307        <projection name="Transverse Mercator">
308            <parameter value="proj=tmerc"/>
309            <parameter value="ellps=clrk66"/>
310            <parameter value="lat_0=90w"/>
311            <parameter value="lon_0=90w"/>
312            <parameter value="k=1"/>
313        </projection>
314    </projectionlist>
315    '''
316    
317        def setUp(self):
318            support.FileLoadTestCase.setUp(self)
319    
320        def test(self):
321            """Test reading a proj file with invalid parameters"""
322            projfile, warnings = resource.read_proj_file(self.filename())
323            projs = projfile.GetProjections()
324            self.assertEquals(len(projs), 1)
325            params = projs[0].GetAllParameters()[:]
326            params.sort()
327            self.assertEquals(params, ['ellps=clrk66', 'k=1', 'lat_0=90w',
328                                       'lon_0=90w', 'proj=tmerc'])
329            self.assertEquals(warnings,
330                           ['Error in projection "Universal Transverse Mercator":'
331                            ' invalid UTM zone number'])
332    
333    
334    
335  if __name__ == "__main__":  if __name__ == "__main__":
336      unittest.main()      unittest.main()
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