/[thuban]/branches/WIP-pyshapelib-bramz/test/test_proj.py
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revision 714 by jonathan, Wed Apr 23 08:47:05 2003 UTC revision 1684 by bh, Thu Aug 28 18:55:01 2003 UTC
# Line 1  Line 1 
1  # Copyright (c) 2002 by Intevation GmbH  # Copyright (c) 2002, 2003 by Intevation GmbH
2  # Authors:  # Authors:
3  # Bernhard Herzog <[email protected]>  # Bernhard Herzog <[email protected]>
4  #  #
# Line 14  __version__ = "$Revision$" Line 14  __version__ = "$Revision$"
14  # $Id$  # $Id$
15    
16  import unittest  import unittest
17    import os
18    
19  import support  import support
20  support.initthuban()  support.initthuban()
21    
22    from Thuban import _
23  from Thuban.Model.proj import Projection, ProjFile  from Thuban.Model.proj import Projection, ProjFile
24    
25  import Thuban.Model.resource as resource  import Thuban.Model.resource as resource
26    
27  from test_save import sax_eventlist  from xmlsupport import sax_eventlist
28    
29    from xml.sax import SAXParseException
30    
31    
32  class TestProjection(unittest.TestCase, support.FloatComparisonMixin):  class TestProjection(unittest.TestCase, support.FloatComparisonMixin):
# Line 32  class TestProjection(unittest.TestCase, Line 36  class TestProjection(unittest.TestCase,
36    
37      def test(self):      def test(self):
38          """Test Projection"""          """Test Projection"""
39          proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"])          params = ["zone=26", "proj=utm", "ellps=clrk66"]
40          self.assertEquals(proj.params, ["zone=26", "proj=utm", "ellps=clrk66"])          proj = Projection(params)
41            self.assertEquals(proj.params, params)
42    
43          # It's not clear whether this value is really the correct one          # It's not clear whether this value is really the correct one
44          # but a test failure here probably still means a bug somewhere          # but a test failure here probably still means a bug somewhere
# Line 48  class TestProjection(unittest.TestCase, Line 53  class TestProjection(unittest.TestCase,
53                                    3875381.8535437919, 252962.10480170773),                                    3875381.8535437919, 252962.10480170773),
54                                   epsilon = 1e-5)                                   epsilon = 1e-5)
55    
56            # GetName()
57            self.assertEquals(proj.GetName(), _("Unknown"))
58    
59            # GetParameter()
60          self.assertEquals(proj.GetParameter("zone"), "26")          self.assertEquals(proj.GetParameter("zone"), "26")
61          self.assertEquals(proj.GetParameter("proj"), "utm")          self.assertEquals(proj.GetParameter("proj"), "utm")
62          self.assertEquals(proj.GetParameter("ellps"), "clrk66")          self.assertEquals(proj.GetParameter("ellps"), "clrk66")
63          self.assertEquals(proj.GetParameter("hallo"), "")          self.assertEquals(proj.GetParameter("hallo"), "")
64    
65            # GetAllParameters()
66            self.assertEquals(proj.GetAllParameters(), params)
67    
68            # GetName()
69            proj = Projection(params, "MyName")
70            self.assertEquals(proj.GetName(), "MyName")
71    
72    
73  sample_projfile = '''\  sample_projfile = '''\
74  <?xml version="1.0" encoding="UTF-8"?>  <?xml version="1.0" encoding="UTF-8"?>
# Line 111  class TestProjFile(unittest.TestCase, su Line 127  class TestProjFile(unittest.TestCase, su
127      def compare_xml(self, xml1, xml2):      def compare_xml(self, xml1, xml2):
128          self.assertEquals(sax_eventlist(xml1), sax_eventlist(xml2))          self.assertEquals(sax_eventlist(xml1), sax_eventlist(xml2))
129    
130        def test(self):
131            """Test ProjFile"""
132    
133            proj0 = Projection(["proj=tmerc", "ellps=clrk66"])
134            proj1 = Projection(["proj=utm", "ellps=clrk66"])
135            proj2 = Projection(["proj=lcc", "ellps=clrk66"])
136    
137            eq = self.assertEquals
138    
139    
140            #
141            # __init__()
142            # GetFilename()
143            # SetFilename()
144            #
145            for name in ["", "hello_world"]:
146                projFile = ProjFile(name)
147                eq(projFile.GetFilename(), name)
148    
149                projFile.SetFilename("XXX")
150                projFile.SetFilename(name)
151                eq(projFile.GetFilename(), name)
152    
153            # initial number of projections should be 0
154            eq(len(projFile.GetProjections()), 0)
155    
156            #
157            # Add()
158            # Remove()
159            #
160            projFile.Add(proj0)
161            eq(len(projFile.GetProjections()), 1)
162            projFile.Remove(proj0)
163            eq(len(projFile.GetProjections()), 0)
164    
165            # try to remove something that doesn't exist
166            self.assertRaises(ValueError, projFile.Remove, None)
167            self.assertRaises(ValueError, projFile.Remove, proj0)
168    
169            projFile.Add(proj0)
170            projFile.Add(proj1)
171            projFile.Add(proj2)
172            eq(len(projFile.GetProjections()), 3)
173    
174            # GetProjections() -- tests order
175            projs = projFile.GetProjections()
176            eq(projs[0], proj0)
177            eq(projs[1], proj1)
178            eq(projs[2], proj2)
179    
180            projFile.Remove(proj2)
181            projFile.Remove(proj1)
182    
183            # Replace()
184            projFile.Replace(proj0, proj1)
185            projs = projFile.GetProjections()
186            eq(projs[0], proj1)
187    
188            # replace a non-existent projection
189            self.assertRaises(ValueError, projFile.Replace, None, proj2)
190            self.assertRaises(ValueError, projFile.Replace, proj0, proj2)
191    
192      def testRead(self):      def testRead(self):
193          """Test ReadProjFile"""          """Test read_proj_file"""
194    
195          self.doTestRead(sample_projfile_data, sample_projfile)          self.doTestRead(sample_projfile_data, sample_projfile)
196          self.doTestRead(sample_projfile_data2, sample_projfile2)          self.doTestRead(sample_projfile_data2, sample_projfile2)
197    
198            #
199            # file doesn't exist
200            #
201            self.assertRaises(IOError,
202                resource.read_proj_file, self.temp_file_name("nonexistent.proj"))
203    
204            #
205            # file isn't readable
206            #
207            filename = self.temp_file_name("projfile.proj")
208            file = open(filename, "w")
209            file.close()
210            os.chmod(filename, 0200) # write-only
211            self.assertRaises(IOError, resource.read_proj_file, filename)
212            os.chmod(filename, 0600) # read/write so we reuse the file
213    
214            #
215            # file has invalid XML (or none at all)
216            #
217            filename = self.temp_file_name("projfile.proj")
218            file = open(filename, "w")
219            file.close()
220    
221            self.assertRaises(SAXParseException, resource.read_proj_file, filename)
222    
223      def testWrite(self):      def testWrite(self):
224          """Test WriteProjFile"""          """Test write_proj_file"""
225    
226          self.doTestWrite(sample_projfile_data, sample_projfile)          self.doTestWrite(sample_projfile_data, sample_projfile)
227          self.doTestWrite(sample_projfile_data2, sample_projfile2)          self.doTestWrite(sample_projfile_data2, sample_projfile2)
# Line 131  class TestProjFile(unittest.TestCase, su Line 234  class TestProjFile(unittest.TestCase, su
234          for proj in data:          for proj in data:
235              pf.Add(Projection(proj[1], proj[0]))              pf.Add(Projection(proj[1], proj[0]))
236    
237          resource.WriteProjFile(pf)          resource.write_proj_file(pf)
238    
239          file = open(filename)          file = open(filename)
240          written_contents = file.read()          written_contents = file.read()
# Line 145  class TestProjFile(unittest.TestCase, su Line 248  class TestProjFile(unittest.TestCase, su
248          file.write(input)          file.write(input)
249          file.close()          file.close()
250    
251          pf = resource.ReadProjFile(filename)          pf = resource.read_proj_file(filename)
252    
253          eq = self.assertEquals          eq = self.assertEquals
254    
255          eq(pf.GetFileName(), filename)          eq(pf.GetFilename(), filename)
256    
257          for proj, d in zip(pf.GetProjections(), data):          for proj, d in zip(pf.GetProjections(), data):
258              eq(proj.GetName(), d[0])              eq(proj.GetName(), d[0])
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