/[thuban]/branches/WIP-pyshapelib-bramz/test/test_proj.py
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revision 1818 by bh, Mon Oct 13 15:54:14 2003 UTC revision 1933 by bh, Tue Nov 11 16:37:53 2003 UTC
# Line 23  support.initthuban() Line 23  support.initthuban()
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       PROJ_UNITS_METERS, PROJ_UNITS_DEGREES
26    from Thuban.Model.messages import PROJECTION_ADDED, PROJECTION_REMOVED, \
27         PROJECTION_REPLACED
28  import Thuban.Model.resource as resource  import Thuban.Model.resource as resource
29    
30  from xmlsupport import sax_eventlist  from xmlsupport import sax_eventlist
# Line 79  class TestProjection(unittest.TestCase, Line 80  class TestProjection(unittest.TestCase,
80          self.assertEquals(proj.GetParameter("south"), "south")          self.assertEquals(proj.GetParameter("south"), "south")
81    
82      def test_get_projection_units_geo(self):      def test_get_projection_units_geo(self):
83          """Test Projection.GetProjectedUnits() for geographic projection"""          """Test Projection.GetProjectedUnits() for geographic projection.
84            Test for the alias 'longlat' as well.
85            """
86          proj = Projection(["proj=latlong", "to_meter=0.017453292519943295",          proj = Projection(["proj=latlong", "to_meter=0.017453292519943295",
87                             "ellps=clrk66"])                             "ellps=clrk66"])
88          self.assertEquals(proj.GetProjectedUnits(), PROJ_UNITS_DEGREES)          self.assertEquals(proj.GetProjectedUnits(), PROJ_UNITS_DEGREES)
89            proj = Projection(["proj=longlat", "to_meter=0.017453292519943295",
90                               "ellps=clrk66"])
91            self.assertEquals(proj.GetProjectedUnits(), PROJ_UNITS_DEGREES)
92    
93      def test_get_projection_units_normal(self):      def test_get_projection_units_normal(self):
94          """Test Projection.GetProjectedUnits() for normal projection"""          """Test Projection.GetProjectedUnits() for normal projection"""
# Line 114  class TestProjection(unittest.TestCase, Line 120  class TestProjection(unittest.TestCase,
120          self.assertEquals(proj.EPSGCode(), "42")          self.assertEquals(proj.EPSGCode(), "42")
121    
122    
 class ProjFileTest(unittest.TestCase, support.FileTestMixin):  
123    
124      """Base class for the proj file tests"""  class TestProjFileSimple:
125    
126      def filename(self):      def test_init(self):
127          """Return the filename for the test"""          """Test ProjFile coinstructor"""
128          return self.temp_file_name(self.id() + ".proj")          proj_file = ProjFile("some_filename")
129            self.assertEquals(proj_file.GetFilename(), "some_filename")
130            self.assertEquals(len(proj_file.GetProjections()), 0)
131    
132        def test_set_filename(self):
133            """Test ProjFile.SetFilename()"""
134            proj_file = ProjFile("some_filename")
135            proj.SetFilename("other_name")
136            self.assertEquals(proj_file.GetFilename(), "other_name")
137    
 class TestProjFile(ProjFileTest, xmlsupport.ValidationTest):  
   
     """Test cases for reading and writing projection files.  
     """  
138    
139      def test(self):  class TestProjFile(unittest.TestCase, support.SubscriberMixin):
         """Test ProjFile"""  
140    
141          proj0 = Projection(["proj=tmerc", "ellps=clrk66"])      """Test cases for ProjFile objects"""
         proj1 = Projection(["proj=utm", "ellps=clrk66"])  
         proj2 = Projection(["proj=lcc", "ellps=clrk66",  
                             "lat_1=0", "lat_2=20"])  
   
         eq = self.assertEquals  
   
   
         #  
         # __init__()  
         # GetFilename()  
         # SetFilename()  
         #  
         for name in ["", "hello_world"]:  
             projFile = ProjFile(name)  
             eq(projFile.GetFilename(), name)  
   
             projFile.SetFilename("XXX")  
             projFile.SetFilename(name)  
             eq(projFile.GetFilename(), name)  
   
         # initial number of projections should be 0  
         eq(len(projFile.GetProjections()), 0)  
   
         #  
         # Add()  
         # Remove()  
         #  
         projFile.Add(proj0)  
         eq(len(projFile.GetProjections()), 1)  
         projFile.Remove(proj0)  
         eq(len(projFile.GetProjections()), 0)  
   
         # try to remove something that doesn't exist  
         self.assertRaises(ValueError, projFile.Remove, None)  
         self.assertRaises(ValueError, projFile.Remove, proj0)  
   
         projFile.Add(proj0)  
         projFile.Add(proj1)  
         projFile.Add(proj2)  
         eq(len(projFile.GetProjections()), 3)  
   
         # GetProjections() -- tests order  
         projs = projFile.GetProjections()  
         eq(projs[0], proj0)  
         eq(projs[1], proj1)  
         eq(projs[2], proj2)  
142    
143          projFile.Remove(proj2)      def setUp(self):
144          projFile.Remove(proj1)          self.clear_messages()
145            self.proj0 = Projection(["proj=tmerc", "ellps=clrk66"])
146            self.proj1 = Projection(["proj=utm", "ellps=clrk66"])
147            self.proj2 = Projection(["proj=lcc", "ellps=clrk66",
148                                     "lat_1=0", "lat_2=20"])
149            self.proj_file = ProjFile("some_filename")
150            for msg in [PROJECTION_ADDED, PROJECTION_REMOVED, PROJECTION_REPLACED]:
151                self.proj_file.Subscribe(msg, self.subscribe_with_params, msg)
152    
153        def tearDown(self):
154            self.clear_messages()
155            self.proj_file.Destroy()
156    
157        def test_add_remove(self):
158            """Test ProjFile.Add() and ProjFile.Remove()"""
159            self.proj_file.Add(self.proj0)
160            self.proj_file.Add(self.proj1)
161            self.assertEquals(self.proj_file.GetProjections(),
162                              [self.proj0, self.proj1])
163            self.check_messages([(self.proj0, PROJECTION_ADDED),
164                                 (self.proj1, PROJECTION_ADDED)])
165            self.clear_messages()
166    
167            self.proj_file.Remove(self.proj0)
168            self.assertEquals(self.proj_file.GetProjections(), [self.proj1])
169            self.check_messages([(self.proj0, PROJECTION_REMOVED)])
170    
171        def test_remove_non_existing(self):
172            """Test ProjFile.Remove(<proj not in projfile>)"""
173            self.assertRaises(ValueError, self.proj_file.Remove, self.proj0)
174            # Nothing happened, so no messages should have been sent
175            self.check_messages([])
176    
177        def test_replace(self):
178            """Test ProjFile.Replace()"""
179            self.proj_file.Add(self.proj0)
180            self.proj_file.Add(self.proj1)
181            self.clear_messages()
182    
183          # Replace()          # Replace()
184          projFile.Replace(proj0, proj1)          self.proj_file.Replace(self.proj0, self.proj2)
185          projs = projFile.GetProjections()          self.assertEquals(self.proj_file.GetProjections(),
186          eq(projs[0], proj1)                            [self.proj2, self.proj1])
187            self.check_messages([(self.proj0, self.proj2, PROJECTION_REPLACED)])
188          # replace a non-existent projection  
189          self.assertRaises(ValueError, projFile.Replace, None, proj2)      def test_replace_non_existing(self):
190          self.assertRaises(ValueError, projFile.Replace, proj0, proj2)          """Test ProjFile.Replace(<proj not in projfile>, <some proj>)"""
191            self.proj_file.Add(self.proj0)
192            self.proj_file.Add(self.proj1)
193            self.clear_messages()
194            self.assertRaises(ValueError,
195                              self.proj_file.Replace, self.proj2, self.proj0)
196            # All projections should still be there
197            self.assertEquals(self.proj_file.GetProjections(),
198                              [self.proj0, self.proj1])
199            # Nothing happened, so no messages should have been sent
200            self.check_messages([])
201    
202    
203    class ProjFileTest(unittest.TestCase, support.FileTestMixin,
204                       xmlsupport.ValidationTest):
205    
206        """Base class for the proj file tests that read or write files"""
207    
208        def filename(self):
209            """Return the filename for the test"""
210            return self.temp_file_name(self.id() + ".proj")
211    
212    
213    class ProjFileReadTests(ProjFileTest):
214    
215        """Test read ProjFile objects from files
216    
217        The files only cover error handling and the system projection file.
218        """
219    
220      def test_read_non_existing_file(self):      def test_read_non_existing_file(self):
221          """Test read_proj_file with non-existing file"""          """Test read_proj_file with non-existing file"""
# Line 218  class TestProjFile(ProjFileTest, xmlsupp Line 244  class TestProjFile(ProjFileTest, xmlsupp
244          self.assertRaises(SAXParseException, resource.read_proj_file, filename)          self.assertRaises(SAXParseException, resource.read_proj_file, filename)
245    
246      def test_get_system_proj_file(self):      def test_get_system_proj_file(self):
247          """Test resource.get_system_proj_file()          """Test resource.get_system_proj_file(DEFAULT_PROJ_FILE)
248    
249          This is primarily to test whether the system proj file contains          This is primarily to test whether the system proj file contains
250          invalid projection paramers and whether the proj file is not          invalid projection paramers and whether the proj file is not
251          empty          empty
252          """          """
253          projfile, warnings = resource.get_system_proj_file()          projfile, warnings\
254                      = resource.get_system_proj_file(resource.DEFAULT_PROJ_FILE)
255          self.assertEquals(warnings, [])          self.assertEquals(warnings, [])
256          self.assert_(len(projfile.GetProjections()) > 0)          self.assert_(len(projfile.GetProjections()) > 0)
257    
258            # see whether it got cached and we get the same projfile object
259            # when we read the file again
260            projfile2, warnings \
261                       = resource.get_system_proj_file(resource.DEFAULT_PROJ_FILE)
262            self.assert_(projfile is projfile2)
263    
264  class WriteProjFileTests(ProjFileTest, xmlsupport.ValidationTest):  
265    class WriteProjFileTests(ProjFileTest):
266    
267      """Test cases for writing proj files"""      """Test cases for writing proj files"""
268    
# Line 296  class WriteProjFileTests(ProjFileTest, x Line 329  class WriteProjFileTests(ProjFileTest, x
329          self.doTestWrite(pf, file_contents)          self.doTestWrite(pf, file_contents)
330    
331    
332  class TestLoadingProjFile(support.FileLoadTestCase):  class ProjFileLoadTestCase(support.FileLoadTestCase):
333    
334        """Base class for the test cases that read specific test files"""
335    
336      file_extension = ".proj"      file_extension = ".proj"
337    
338        def tearDown(self):
339            """Clear the cache explicitly"""
340            resource.clear_proj_file_cache()
341    
342    
343    class TestLoadingProjFile(ProjFileLoadTestCase):
344    
345      file_contents = '''\      file_contents = '''\
346  <?xml version="1.0" encoding="UTF-8"?>  <?xml version="1.0" encoding="UTF-8"?>
347  <!DOCTYPE projectionlist SYSTEM "projfile.dtd">  <!DOCTYPE projectionlist SYSTEM "projfile.dtd">
# Line 350  class TestLoadingProjFile(support.FileLo Line 393  class TestLoadingProjFile(support.FileLo
393                                 "proj=tmerc", "units=m",                                 "proj=tmerc", "units=m",
394                                 "x_0=400000.000", "y_0=0.000"])                                 "x_0=400000.000", "y_0=0.000"])
395    
396        def test_caching(self):
397            # test whether the projfile cache works
398            projfile, warnings = resource.read_proj_file(self.filename())
399            projfile2, warnings = resource.read_proj_file(self.filename())
400    
401  class TestLoadingProjFileWithEmptyProjectionlist(support.FileLoadTestCase):          # Both projfiles should be the same object
402            self.assert_(projfile2 is projfile)
403    
404            # If we clear the cache we should get a new one.
405            resource.clear_proj_file_cache()
406            projfile3, warnings = resource.read_proj_file(self.filename())
407            self.assert_(projfile3 is not projfile)
408    
409    
410    class TestLoadingProjFileWithEmptyProjectionlist(ProjFileLoadTestCase):
411    
     file_extension = ".proj"  
412      file_contents = '''\      file_contents = '''\
413  <?xml version="1.0" encoding="UTF-8"?>  <?xml version="1.0" encoding="UTF-8"?>
414  <!DOCTYPE projectionlist SYSTEM "projfile.dtd">  <!DOCTYPE projectionlist SYSTEM "projfile.dtd">
# Line 370  class TestLoadingProjFileWithEmptyProjec Line 425  class TestLoadingProjFileWithEmptyProjec
425          self.assertEquals(len(projfile.GetProjections()), 0)          self.assertEquals(len(projfile.GetProjections()), 0)
426    
427    
428  class TestProjFileWithInvalidParameters(unittest.TestCase,  class TestProjFileWithInvalidParameters(ProjFileLoadTestCase):
                                         support.FileLoadTestCase):  
429    
     file_extension = ".proj"  
430      file_contents = '''\      file_contents = '''\
431  <?xml version="1.0" encoding="UTF-8"?>  <?xml version="1.0" encoding="UTF-8"?>
432  <!DOCTYPE projectionlist SYSTEM "projfile.dtd">  <!DOCTYPE projectionlist SYSTEM "projfile.dtd">
# Line 413  class TestProjFileWithInvalidParameters( Line 466  class TestProjFileWithInvalidParameters(
466    
467    
468  if __name__ == "__main__":  if __name__ == "__main__":
469      unittest.main()      support.run_tests()
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