/[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 1982 by bh, Thu Nov 27 15:25:34 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 54  class TestProjection(unittest.TestCase, Line 55  class TestProjection(unittest.TestCase,
55                                   (3620891.3077618643, 0.0,                                   (3620891.3077618643, 0.0,
56                                    3875381.8535437919, 252962.10480170773),                                    3875381.8535437919, 252962.10480170773),
57                                   epsilon = 1e-5)                                   epsilon = 1e-5)
58            self.assertFloatSeqEqual(proj.InverseBBox((3620891.3077618643, 0.0,
59                                                       3875381.8535437919,
60                                                       252962.10480170773)),
61                                     (-0.018341599754143501, 0.0,
62                                      2.017992992681688, 2.0377390677846736),
63                                     epsilon = 1e-5)
64    
65          # GetName()          # GetName()
66          self.assertEquals(proj.GetName(), _("Unknown"))          self.assertEquals(proj.GetName(), _("Unknown"))
# Line 79  class TestProjection(unittest.TestCase, Line 86  class TestProjection(unittest.TestCase,
86          self.assertEquals(proj.GetParameter("south"), "south")          self.assertEquals(proj.GetParameter("south"), "south")
87    
88      def test_get_projection_units_geo(self):      def test_get_projection_units_geo(self):
89          """Test Projection.GetProjectedUnits() for geographic projection"""          """Test Projection.GetProjectedUnits() for geographic projection.
90            Test for the alias 'longlat' as well.
91            """
92          proj = Projection(["proj=latlong", "to_meter=0.017453292519943295",          proj = Projection(["proj=latlong", "to_meter=0.017453292519943295",
93                             "ellps=clrk66"])                             "ellps=clrk66"])
94          self.assertEquals(proj.GetProjectedUnits(), PROJ_UNITS_DEGREES)          self.assertEquals(proj.GetProjectedUnits(), PROJ_UNITS_DEGREES)
95            proj = Projection(["proj=longlat", "to_meter=0.017453292519943295",
96                               "ellps=clrk66"])
97            self.assertEquals(proj.GetProjectedUnits(), PROJ_UNITS_DEGREES)
98    
99      def test_get_projection_units_normal(self):      def test_get_projection_units_normal(self):
100          """Test Projection.GetProjectedUnits() for normal projection"""          """Test Projection.GetProjectedUnits() for normal projection"""
# Line 114  class TestProjection(unittest.TestCase, Line 126  class TestProjection(unittest.TestCase,
126          self.assertEquals(proj.EPSGCode(), "42")          self.assertEquals(proj.EPSGCode(), "42")
127    
128    
 class ProjFileTest(unittest.TestCase, support.FileTestMixin):  
129    
130      """Base class for the proj file tests"""  class TestProjFileSimple:
   
     def filename(self):  
         """Return the filename for the test"""  
         return self.temp_file_name(self.id() + ".proj")  
131    
132        def test_init(self):
133            """Test ProjFile coinstructor"""
134            proj_file = ProjFile("some_filename")
135            self.assertEquals(proj_file.GetFilename(), "some_filename")
136            self.assertEquals(len(proj_file.GetProjections()), 0)
137    
138  class TestProjFile(ProjFileTest, xmlsupport.ValidationTest):      def test_set_filename(self):
139            """Test ProjFile.SetFilename()"""
140            proj_file = ProjFile("some_filename")
141            proj.SetFilename("other_name")
142            self.assertEquals(proj_file.GetFilename(), "other_name")
143    
     """Test cases for reading and writing projection files.  
     """  
144    
145      def test(self):  class TestProjFile(unittest.TestCase, support.SubscriberMixin):
         """Test ProjFile"""  
146    
147          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)  
148    
149          projFile.Remove(proj2)      def setUp(self):
150          projFile.Remove(proj1)          self.clear_messages()
151            self.proj0 = Projection(["proj=tmerc", "ellps=clrk66"])
152            self.proj1 = Projection(["proj=utm", "ellps=clrk66"])
153            self.proj2 = Projection(["proj=lcc", "ellps=clrk66",
154                                     "lat_1=0", "lat_2=20"])
155            self.proj_file = ProjFile("some_filename")
156            for msg in [PROJECTION_ADDED, PROJECTION_REMOVED, PROJECTION_REPLACED]:
157                self.proj_file.Subscribe(msg, self.subscribe_with_params, msg)
158    
159        def tearDown(self):
160            self.clear_messages()
161            self.proj_file.Destroy()
162    
163        def test_add_remove(self):
164            """Test ProjFile.Add() and ProjFile.Remove()"""
165            self.proj_file.Add(self.proj0)
166            self.proj_file.Add(self.proj1)
167            self.assertEquals(self.proj_file.GetProjections(),
168                              [self.proj0, self.proj1])
169            self.check_messages([(self.proj0, PROJECTION_ADDED),
170                                 (self.proj1, PROJECTION_ADDED)])
171            self.clear_messages()
172    
173            self.proj_file.Remove(self.proj0)
174            self.assertEquals(self.proj_file.GetProjections(), [self.proj1])
175            self.check_messages([(self.proj0, PROJECTION_REMOVED)])
176    
177        def test_remove_non_existing(self):
178            """Test ProjFile.Remove(<proj not in projfile>)"""
179            self.assertRaises(ValueError, self.proj_file.Remove, self.proj0)
180            # Nothing happened, so no messages should have been sent
181            self.check_messages([])
182    
183        def test_replace(self):
184            """Test ProjFile.Replace()"""
185            self.proj_file.Add(self.proj0)
186            self.proj_file.Add(self.proj1)
187            self.clear_messages()
188    
189          # Replace()          # Replace()
190          projFile.Replace(proj0, proj1)          self.proj_file.Replace(self.proj0, self.proj2)
191          projs = projFile.GetProjections()          self.assertEquals(self.proj_file.GetProjections(),
192          eq(projs[0], proj1)                            [self.proj2, self.proj1])
193            self.check_messages([(self.proj0, self.proj2, PROJECTION_REPLACED)])
194          # replace a non-existent projection  
195          self.assertRaises(ValueError, projFile.Replace, None, proj2)      def test_replace_non_existing(self):
196          self.assertRaises(ValueError, projFile.Replace, proj0, proj2)          """Test ProjFile.Replace(<proj not in projfile>, <some proj>)"""
197            self.proj_file.Add(self.proj0)
198            self.proj_file.Add(self.proj1)
199            self.clear_messages()
200            self.assertRaises(ValueError,
201                              self.proj_file.Replace, self.proj2, self.proj0)
202            # All projections should still be there
203            self.assertEquals(self.proj_file.GetProjections(),
204                              [self.proj0, self.proj1])
205            # Nothing happened, so no messages should have been sent
206            self.check_messages([])
207    
208    
209    class ProjFileTest(unittest.TestCase, support.FileTestMixin,
210                       xmlsupport.ValidationTest):
211    
212        """Base class for the proj file tests that read or write files"""
213    
214        def filename(self):
215            """Return the filename for the test"""
216            return self.temp_file_name(self.id() + ".proj")
217    
218    
219    class ProjFileReadTests(ProjFileTest):
220    
221        """Test read ProjFile objects from files
222    
223        The files only cover error handling and the system projection file.
224        """
225    
226      def test_read_non_existing_file(self):      def test_read_non_existing_file(self):
227          """Test read_proj_file with non-existing file"""          """Test read_proj_file with non-existing file"""
# Line 203  class TestProjFile(ProjFileTest, xmlsupp Line 235  class TestProjFile(ProjFileTest, xmlsupp
235          As currently written this only works on unix-like systems and          As currently written this only works on unix-like systems and
236          not e.g. on MS Windows.          not e.g. on MS Windows.
237          """          """
238            if os.name != "posix":
239                raise support.SkipTest("Test only works on posix systems")
240          filename = self.filename()          filename = self.filename()
241          file = open(filename, "w")          file = open(filename, "w")
242          file.close()          file.close()
# Line 218  class TestProjFile(ProjFileTest, xmlsupp Line 252  class TestProjFile(ProjFileTest, xmlsupp
252          self.assertRaises(SAXParseException, resource.read_proj_file, filename)          self.assertRaises(SAXParseException, resource.read_proj_file, filename)
253    
254      def test_get_system_proj_file(self):      def test_get_system_proj_file(self):
255          """Test resource.get_system_proj_file()          """Test resource.get_system_proj_file(DEFAULT_PROJ_FILE)
256    
257          This is primarily to test whether the system proj file contains          This is primarily to test whether the system proj file contains
258          invalid projection paramers and whether the proj file is not          invalid projection paramers and whether the proj file is not
259          empty          empty
260          """          """
261          projfile, warnings = resource.get_system_proj_file()          projfile, warnings\
262                      = resource.get_system_proj_file(resource.DEFAULT_PROJ_FILE)
263          self.assertEquals(warnings, [])          self.assertEquals(warnings, [])
264          self.assert_(len(projfile.GetProjections()) > 0)          self.assert_(len(projfile.GetProjections()) > 0)
265    
266            # see whether it got cached and we get the same projfile object
267            # when we read the file again
268            projfile2, warnings \
269                       = resource.get_system_proj_file(resource.DEFAULT_PROJ_FILE)
270            self.assert_(projfile is projfile2)
271    
272    
273  class WriteProjFileTests(ProjFileTest, xmlsupport.ValidationTest):  class WriteProjFileTests(ProjFileTest):
274    
275      """Test cases for writing proj files"""      """Test cases for writing proj files"""
276    
# Line 296  class WriteProjFileTests(ProjFileTest, x Line 337  class WriteProjFileTests(ProjFileTest, x
337          self.doTestWrite(pf, file_contents)          self.doTestWrite(pf, file_contents)
338    
339    
340  class TestLoadingProjFile(support.FileLoadTestCase):  class ProjFileLoadTestCase(support.FileLoadTestCase):
341    
342        """Base class for the test cases that read specific test files"""
343    
344      file_extension = ".proj"      file_extension = ".proj"
345    
346        def tearDown(self):
347            """Clear the cache explicitly"""
348            resource.clear_proj_file_cache()
349    
350    
351    class TestLoadingProjFile(ProjFileLoadTestCase):
352    
353      file_contents = '''\      file_contents = '''\
354  <?xml version="1.0" encoding="UTF-8"?>  <?xml version="1.0" encoding="UTF-8"?>
355  <!DOCTYPE projectionlist SYSTEM "projfile.dtd">  <!DOCTYPE projectionlist SYSTEM "projfile.dtd">
# Line 350  class TestLoadingProjFile(support.FileLo Line 401  class TestLoadingProjFile(support.FileLo
401                                 "proj=tmerc", "units=m",                                 "proj=tmerc", "units=m",
402                                 "x_0=400000.000", "y_0=0.000"])                                 "x_0=400000.000", "y_0=0.000"])
403    
404        def test_caching(self):
405            # test whether the projfile cache works
406            projfile, warnings = resource.read_proj_file(self.filename())
407            projfile2, warnings = resource.read_proj_file(self.filename())
408    
409  class TestLoadingProjFileWithEmptyProjectionlist(support.FileLoadTestCase):          # Both projfiles should be the same object
410            self.assert_(projfile2 is projfile)
411    
412            # If we clear the cache we should get a new one.
413            resource.clear_proj_file_cache()
414            projfile3, warnings = resource.read_proj_file(self.filename())
415            self.assert_(projfile3 is not projfile)
416    
417    
418    class TestLoadingProjFileWithEmptyProjectionlist(ProjFileLoadTestCase):
419    
     file_extension = ".proj"  
420      file_contents = '''\      file_contents = '''\
421  <?xml version="1.0" encoding="UTF-8"?>  <?xml version="1.0" encoding="UTF-8"?>
422  <!DOCTYPE projectionlist SYSTEM "projfile.dtd">  <!DOCTYPE projectionlist SYSTEM "projfile.dtd">
# Line 370  class TestLoadingProjFileWithEmptyProjec Line 433  class TestLoadingProjFileWithEmptyProjec
433          self.assertEquals(len(projfile.GetProjections()), 0)          self.assertEquals(len(projfile.GetProjections()), 0)
434    
435    
436  class TestProjFileWithInvalidParameters(unittest.TestCase,  class TestProjFileWithInvalidParameters(ProjFileLoadTestCase):
                                         support.FileLoadTestCase):  
437    
     file_extension = ".proj"  
438      file_contents = '''\      file_contents = '''\
439  <?xml version="1.0" encoding="UTF-8"?>  <?xml version="1.0" encoding="UTF-8"?>
440  <!DOCTYPE projectionlist SYSTEM "projfile.dtd">  <!DOCTYPE projectionlist SYSTEM "projfile.dtd">
# Line 413  class TestProjFileWithInvalidParameters( Line 474  class TestProjFileWithInvalidParameters(
474    
475    
476  if __name__ == "__main__":  if __name__ == "__main__":
477      unittest.main()      support.run_tests()
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