/[thuban]/branches/WIP-pyshapelib-bramz/test/test_proj.py

Diff of /branches/WIP-pyshapelib-bramz/test/test_proj.py

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-revision 1827 by bh,
Tue Oct 14 16:04:35 2003 UTC
+revision 1966 by bh,
Thu Nov 20 18:15:57 2003 UTC
 Line 80 
 class TestProjection(unittest.TestCase,
          self.assertEquals(proj.GetParameter("south"), "south")
      def test_get_projection_units_geo(self):
-         """Test Projection.GetProjectedUnits() for geographic projection"""
+         """Test Projection.GetProjectedUnits() for geographic projection.
+         Test for the alias 'longlat' as well.
+         """
          proj = Projection(["proj=latlong", "to_meter=0.017453292519943295",
                             "ellps=clrk66"])
          self.assertEquals(proj.GetProjectedUnits(), PROJ_UNITS_DEGREES)
+         proj = Projection(["proj=longlat", "to_meter=0.017453292519943295",
+                            "ellps=clrk66"])
+         self.assertEquals(proj.GetProjectedUnits(), PROJ_UNITS_DEGREES)
      def test_get_projection_units_normal(self):
          """Test Projection.GetProjectedUnits() for normal projection"""
-Line 133 
 class TestProjFileSimple:
+Line 138 
 class TestProjFileSimple:
  class TestProjFile(unittest.TestCase, support.SubscriberMixin):
-     """Test cases for reading and writing projection files.
+     """Test cases for ProjFile objects"""
-     """
      def setUp(self):
          self.clear_messages()
-Line 208 
 class ProjFileTest(unittest.TestCase, su
+Line 212 
 class ProjFileTest(unittest.TestCase, su
  class ProjFileReadTests(ProjFileTest):
-     """Test read ProjFile objects from files"""
+     """Test read ProjFile objects from files
+     The files only cover error handling and the system projection file.
+     """
      def test_read_non_existing_file(self):
          """Test read_proj_file with non-existing file"""
-Line 222 
 class ProjFileReadTests(ProjFileTest):
+Line 229 
 class ProjFileReadTests(ProjFileTest):
          As currently written this only works on unix-like systems and
          not e.g. on MS Windows.
          """
+         if os.name != "posix":
+             raise support.SkipTest("Test only works on posix systems")
          filename = self.filename()
          file = open(filename, "w")
          file.close()
-Line 237 
 class ProjFileReadTests(ProjFileTest):
+Line 246 
 class ProjFileReadTests(ProjFileTest):
          self.assertRaises(SAXParseException, resource.read_proj_file, filename)
      def test_get_system_proj_file(self):
-         """Test resource.get_system_proj_file()
+         """Test resource.get_system_proj_file(DEFAULT_PROJ_FILE)
          This is primarily to test whether the system proj file contains
          invalid projection paramers and whether the proj file is not
          empty
          """
-         projfile, warnings = resource.get_system_proj_file()
+         projfile, warnings\
+                   = resource.get_system_proj_file(resource.DEFAULT_PROJ_FILE)
          self.assertEquals(warnings, [])
          self.assert_(len(projfile.GetProjections()) > 0)
+         # see whether it got cached and we get the same projfile object
+         # when we read the file again
+         projfile2, warnings \
+                    = resource.get_system_proj_file(resource.DEFAULT_PROJ_FILE)
+         self.assert_(projfile is projfile2)
  class WriteProjFileTests(ProjFileTest):
-Line 315 
 class WriteProjFileTests(ProjFileTest):
+Line 331 
 class WriteProjFileTests(ProjFileTest):
          self.doTestWrite(pf, file_contents)
- class TestLoadingProjFile(support.FileLoadTestCase):
+ class ProjFileLoadTestCase(support.FileLoadTestCase):
+     """Base class for the test cases that read specific test files"""
      file_extension = ".proj"
+     def tearDown(self):
+         """Clear the cache explicitly"""
+         resource.clear_proj_file_cache()
+ class TestLoadingProjFile(ProjFileLoadTestCase):
      file_contents = '''\
  <?xml version="1.0" encoding="UTF-8"?>
  <!DOCTYPE projectionlist SYSTEM "projfile.dtd">
-Line 369 
 class TestLoadingProjFile(support.FileLo
+Line 395 
 class TestLoadingProjFile(support.FileLo
                                 "proj=tmerc", "units=m",
                                 "x_0=400000.000", "y_0=0.000"])
+     def test_caching(self):
+         # test whether the projfile cache works
+         projfile, warnings = resource.read_proj_file(self.filename())
+         projfile2, warnings = resource.read_proj_file(self.filename())
- class TestLoadingProjFileWithEmptyProjectionlist(support.FileLoadTestCase):
+         # Both projfiles should be the same object
+         self.assert_(projfile2 is projfile)
+         # If we clear the cache we should get a new one.
+         resource.clear_proj_file_cache()
+         projfile3, warnings = resource.read_proj_file(self.filename())
+         self.assert_(projfile3 is not projfile)
+ class TestLoadingProjFileWithEmptyProjectionlist(ProjFileLoadTestCase):
-     file_extension = ".proj"
      file_contents = '''\
  <?xml version="1.0" encoding="UTF-8"?>
  <!DOCTYPE projectionlist SYSTEM "projfile.dtd">
-Line 389 
 class TestLoadingProjFileWithEmptyProjec
+Line 427 
 class TestLoadingProjFileWithEmptyProjec
          self.assertEquals(len(projfile.GetProjections()), 0)
- class TestProjFileWithInvalidParameters(unittest.TestCase,
+ class TestProjFileWithInvalidParameters(ProjFileLoadTestCase):
-                                         support.FileLoadTestCase):
-     file_extension = ".proj"
      file_contents = '''\
  <?xml version="1.0" encoding="UTF-8"?>
  <!DOCTYPE projectionlist SYSTEM "projfile.dtd">

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