WIP-pyshapelib-bramz/test/test_proj.py

# Copyright (c) 2002, 2003 by Intevation GmbH
# Authors:
# Bernhard Herzog <[email protected]>
#
# This program is free software under the GPL (>=v2)
# Read the file COPYING coming with Thuban for details.

"""
Test the Thuban-specific Projection class
"""

__version__ = "$Revision$"
# $Source$
# $Id$

import unittest
import os

import xmlsupport
import support
support.initthuban()

from Thuban import _
from Thuban.Model.proj import Projection, ProjFile, \
     PROJ_UNITS_METERS, PROJ_UNITS_DEGREES
from Thuban.Model.messages import PROJECTION_ADDED, PROJECTION_REMOVED, \
     PROJECTION_REPLACED
import Thuban.Model.resource as resource

from xmlsupport import sax_eventlist

from xml.sax import SAXParseException


class TestProjection(unittest.TestCase, support.FloatComparisonMixin):

    """Test cases for the Thuban-specific Projection class
    """

    def test(self):
        """Test Projection"""
        params = ["zone=26", "proj=utm", "ellps=clrk66"]
        proj = Projection(params)
        self.assertEquals(proj.params, params)

        # It's not clear whether this value is really the correct one
        # but a test failure here probably still means a bug somewhere
        self.assertFloatSeqEqual(proj.Forward(0, 0),
                                 [3623101.8103431347, 0.0],
                                 epsilon = 1e-5)
        self.assertFloatSeqEqual(proj.Inverse(3623101.8103431347, 0.0),
                                 [-0.00065775699878736467, 0])

        self.assertFloatSeqEqual(proj.ForwardBBox((0, 0, 2, 2)),
                                 (3620891.3077618643, 0.0,
                                  3875381.8535437919, 252962.10480170773),
                                 epsilon = 1e-5)

        # GetName()
        self.assertEquals(proj.GetName(), _("Unknown"))

        # GetParameter()
        self.assertEquals(proj.GetParameter("zone"), "26")
        self.assertEquals(proj.GetParameter("proj"), "utm")
        self.assertEquals(proj.GetParameter("ellps"), "clrk66")
        self.assertEquals(proj.GetParameter("hallo"), "")

        # GetAllParameters()
        self.assertEquals(proj.GetAllParameters(), params)

        # GetName()
        proj = Projection(params, "MyName")
        self.assertEquals(proj.GetName(), "MyName")

    def test_get_parameter_without_equals_sign(self):
        """Test Projection.GetParameter() for a parameter without '=' sign"""
        proj = Projection(["proj=utm", "zone=34", "south", "ellps=clrk66"])
        # The Projection class pretends that for parameters specified
        # without a value the value is the same as the parameter name.
        self.assertEquals(proj.GetParameter("south"), "south")

    def test_get_projection_units_geo(self):
        """Test Projection.GetProjectedUnits() for geographic projection"""
        proj = Projection(["proj=latlong", "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"""
        proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"])
        self.assertEquals(proj.GetProjectedUnits(), PROJ_UNITS_METERS)

    def test_label(self):
        """Test Projection.Label() without epsg"""
        proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"],
                           name = "My Projection")
        self.assertEquals(proj.Label(), "My Projection")

    def test_label_epsg(self):
        """Test Projection.Label() with epsg"""
        proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"],
                           name = "My Projection", epsg="42")
        self.assertEquals(proj.Label(), "EPSG    42 My Projection")

    def test_epsgcode_for_non_epsg_projection(self):
        """Test Projection.EPSGCode() without epsg"""
        proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"],
                           name = "My Projection")
        self.assertEquals(proj.EPSGCode(), None)

    def test_epsgcode_for_real_epsg_projection(self):
        """Test Projection.EPSGCode() with epsg"""
        proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"],
                           name = "My Projection", epsg="42")
        self.assertEquals(proj.EPSGCode(), "42")


class TestProjFileSimple:

    def test_init(self):
        """Test ProjFile coinstructor"""
        proj_file = ProjFile("some_filename")
        self.assertEquals(proj_file.GetFilename(), "some_filename")
        self.assertEquals(len(proj_file.GetProjections()), 0)

    def test_set_filename(self):
        """Test ProjFile.SetFilename()"""
        proj_file = ProjFile("some_filename")
        proj.SetFilename("other_name")
        self.assertEquals(proj_file.GetFilename(), "other_name")


class TestProjFile(unittest.TestCase, support.SubscriberMixin):

    """Test cases for reading and writing projection files.
    """

    def setUp(self):
        self.clear_messages()
        self.proj0 = Projection(["proj=tmerc", "ellps=clrk66"])
        self.proj1 = Projection(["proj=utm", "ellps=clrk66"])
        self.proj2 = Projection(["proj=lcc", "ellps=clrk66",
                                 "lat_1=0", "lat_2=20"])
        self.proj_file = ProjFile("some_filename")
        for msg in [PROJECTION_ADDED, PROJECTION_REMOVED, PROJECTION_REPLACED]:
            self.proj_file.Subscribe(msg, self.subscribe_with_params, msg)

    def test_add_remove(self):
        """Test ProjFile.Add() and ProjFile.Remove()"""
        self.proj_file.Add(self.proj0)
        self.proj_file.Add(self.proj1)
        self.assertEquals(self.proj_file.GetProjections(),
                          [self.proj0, self.proj1])
        self.check_messages([(self.proj0, PROJECTION_ADDED),
                             (self.proj1, PROJECTION_ADDED)])
        self.clear_messages()

        self.proj_file.Remove(self.proj0)
        self.assertEquals(self.proj_file.GetProjections(), [self.proj1])
        self.check_messages([(self.proj0, PROJECTION_REMOVED)])

    def test_remove_non_existing(self):
        """Test ProjFile.Remove(<proj not in projfile>)"""
        self.assertRaises(ValueError, self.proj_file.Remove, self.proj0)
        # Nothing happened, so no messages should have been sent
        self.check_messages([])

    def test_replace(self):
        """Test ProjFile.Replace()"""
        self.proj_file.Add(self.proj0)
        self.proj_file.Add(self.proj1)
        self.clear_messages()

        # Replace()
        self.proj_file.Replace(self.proj0, self.proj2)
        self.assertEquals(self.proj_file.GetProjections(),
                          [self.proj2, self.proj1])
        self.check_messages([(self.proj0, self.proj2, PROJECTION_REPLACED)])

    def test_replace_non_existing(self):
        """Test ProjFile.Replace(<proj not in projfile>, <some proj>)"""
        self.proj_file.Add(self.proj0)
        self.proj_file.Add(self.proj1)
        self.clear_messages()
        self.assertRaises(ValueError,
                          self.proj_file.Replace, self.proj2, self.proj0)
        # All projections should still be there
        self.assertEquals(self.proj_file.GetProjections(),
                          [self.proj0, self.proj1])
        # Nothing happened, so no messages should have been sent
        self.check_messages([])


class ProjFileTest(unittest.TestCase, support.FileTestMixin,
                   xmlsupport.ValidationTest):

    """Base class for the proj file tests that read or write files"""

    def filename(self):
        """Return the filename for the test"""
        return self.temp_file_name(self.id() + ".proj")


class ProjFileReadTests(ProjFileTest):

    """Test read ProjFile objects from files"""

    def test_read_non_existing_file(self):
        """Test read_proj_file with non-existing file"""
        self.assertRaises(IOError,
                          resource.read_proj_file,
                          self.temp_file_name("nonexistent.proj"))

    def test_read_unreadable_file(self):
        """Test read_proj_file with unreadable file

        As currently written this only works on unix-like systems and
        not e.g. on MS Windows.
        """
        filename = self.filename()
        file = open(filename, "w")
        file.close()
        os.chmod(filename, 0200) # write-only
        self.assertRaises(IOError, resource.read_proj_file, filename)

    def test_read_empty_file(self):
        """Test read_proj_file with empty file"""
        filename = self.filename()
        file = open(filename, "w")
        file.close()

        self.assertRaises(SAXParseException, resource.read_proj_file, filename)

    def test_get_system_proj_file(self):
        """Test resource.get_system_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()
        self.assertEquals(warnings, [])
        self.assert_(len(projfile.GetProjections()) > 0)


class WriteProjFileTests(ProjFileTest):

    """Test cases for writing proj files"""

    def compare_xml(self, xml1, xml2):
        self.assertEquals(sax_eventlist(xml1), sax_eventlist(xml2))

    def doTestWrite(self, projfile, expected):
        filename = self.filename()

        resource.write_proj_file(projfile)

        file = open(filename)
        written_contents = file.read()
        file.close()
        self.compare_xml(written_contents, expected)
        self.validate_data(written_contents)
        self.validate_data(expected)

    def test_write(self):
        """Test write_proj_file"""
        pf = ProjFile(self.filename())
        pf.Add(Projection(['proj=tmerc', 'ellps=clrk66',
                           'lat_0=90w', 'lon_0=90w', 'k=1'],
                          "Transverse Mercator",))
        pf.Add(Projection(["proj=tmerc",
                           "lat_0=0.000000000", "lon_0=-62.000000000",
                           "k=0.999500", "x_0=400000.000", "y_0=0.000",
                           "ellps=clrk80", "units=m"],
                          "Anguilla 1957 / British West Indies Grid",
                          epsg="200"))
        file_contents = '''<?xml version="1.0" encoding="UTF-8"?>
        <!DOCTYPE projectionlist SYSTEM "projfile.dtd">
        <projectionlist>
            <projection name="Transverse Mercator">
                <parameter value="proj=tmerc"/>
                <parameter value="ellps=clrk66"/>
                <parameter value="lat_0=90w"/>
                <parameter value="lon_0=90w"/>
                <parameter value="k=1"/>
            </projection>
            <projection epsg="200"
                        name="Anguilla 1957 / British West Indies Grid">
                <parameter value="proj=tmerc"/>
                <parameter value="lat_0=0.000000000"/>
                <parameter value="lon_0=-62.000000000"/>
                <parameter value="k=0.999500"/>
                <parameter value="x_0=400000.000"/>
                <parameter value="y_0=0.000"/>
                <parameter value="ellps=clrk80"/>
                <parameter value="units=m"/>
            </projection>
        </projectionlist>
        '''
        self.doTestWrite(pf, file_contents)

    def test_write_empty_file(self):
        """Test write empty ProjFile"""
        pf = ProjFile(self.filename())
        file_contents = '''<?xml version="1.0" encoding="UTF-8"?>
        <!DOCTYPE projectionlist SYSTEM "projfile.dtd">
        <projectionlist>
        </projectionlist>
        '''
        self.doTestWrite(pf, file_contents)


class TestLoadingProjFile(support.FileLoadTestCase):

    file_extension = ".proj"
    file_contents = '''\
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE projectionlist SYSTEM "projfile.dtd">
<projectionlist>
    <projection name="Transverse Mercator">
        <parameter value="proj=tmerc"/>
        <parameter value="ellps=clrk66"/>
        <parameter value="lat_0=90w"/>
        <parameter value="lon_0=90w"/>
        <parameter value="k=1"/>
    </projection>
    <projection epsg="200" name="Anguilla 1957 / British West Indies Grid">
        <parameter value="proj=tmerc"/>
        <parameter value="lat_0=0.000000000"/>
        <parameter value="lon_0=-62.000000000"/>
        <parameter value="k=0.999500"/>
        <parameter value="x_0=400000.000"/>
        <parameter value="y_0=0.000"/>
        <parameter value="ellps=clrk80"/>
        <parameter value="units=m"/>
    </projection>
</projectionlist>
'''

    def check_projection(self, proj, label, parameters):
        """Check the values of the proj's label and parameters"""
        self.assertEquals(proj.Label(), label)
        params = proj.GetAllParameters()[:]
        params.sort()
        self.assertEquals(params, parameters)

    def test(self):
        projfile, warnings = resource.read_proj_file(self.filename())
        # no warnings
        self.assertEquals(warnings, [])

        # There are two projections
        projs = projfile.GetProjections()
        self.assertEquals(len(projs), 2)

        self.check_projection(projs[0],
                              "Transverse Mercator",
                              ['ellps=clrk66', 'k=1', 'lat_0=90w', 'lon_0=90w',
                               'proj=tmerc'])
        self.check_projection(projs[1],
                         "EPSG   200 Anguilla 1957 / British West Indies Grid",
                              ["ellps=clrk80", "k=0.999500",
                               "lat_0=0.000000000", "lon_0=-62.000000000",
                               "proj=tmerc", "units=m",
                               "x_0=400000.000", "y_0=0.000"])


class TestLoadingProjFileWithEmptyProjectionlist(support.FileLoadTestCase):

    file_extension = ".proj"
    file_contents = '''\
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE projectionlist SYSTEM "projfile.dtd">
<projectionlist>
</projectionlist>
'''

    def test(self):
        projfile, warnings = resource.read_proj_file(self.filename())
        # no warnings
        self.assertEquals(warnings, [])

        # There are no projections
        self.assertEquals(len(projfile.GetProjections()), 0)


class TestProjFileWithInvalidParameters(unittest.TestCase,
                                        support.FileLoadTestCase):

    file_extension = ".proj"
    file_contents = '''\
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE projectionlist SYSTEM "projfile.dtd">
<projectionlist>
    <projection name="Universal Transverse Mercator">
        <parameter value="proj=utm"/>
        <parameter value="ellps=clrk66"/>
        <!-- an invalid zone number to trigger the parameter checking
             in the proj library -->
        <parameter value="zone=1000"/>
    </projection>
    <projection name="Transverse Mercator">
        <parameter value="proj=tmerc"/>
        <parameter value="ellps=clrk66"/>
        <parameter value="lat_0=90w"/>
        <parameter value="lon_0=90w"/>
        <parameter value="k=1"/>
    </projection>
</projectionlist>
'''

    def setUp(self):
        support.FileLoadTestCase.setUp(self)

    def test(self):
        """Test reading a proj file with invalid parameters"""
        projfile, warnings = resource.read_proj_file(self.filename())
        projs = projfile.GetProjections()
        self.assertEquals(len(projs), 1)
        params = projs[0].GetAllParameters()[:]
        params.sort()
        self.assertEquals(params, ['ellps=clrk66', 'k=1', 'lat_0=90w',
                                   'lon_0=90w', 'proj=tmerc'])
        self.assertEquals(warnings,
                       ['Error in projection "Universal Transverse Mercator":'
                        ' invalid UTM zone number'])


if __name__ == "__main__":
    unittest.main()
1	bh	1259	# Copyright (c) 2002, 2003 by Intevation GmbH
2	bh	333	# Authors:
3			# Bernhard Herzog <[email protected]>
4			#
5			# This program is free software under the GPL (>=v2)
6			# Read the file COPYING coming with Thuban for details.
7
8			"""
9			Test the Thuban-specific Projection class
10			"""
11
12			__version__ = "$Revision$"
13			# $Source$
14			# $Id$
15
16			import unittest
17	jonathan	719	import os
18	bh	333
19	bh	1756	import xmlsupport
20	bh	333	import support
21			support.initthuban()
22
23	bh	1684	from Thuban import _
24	bh	1793	from Thuban.Model.proj import Projection, ProjFile, \
25			PROJ_UNITS_METERS, PROJ_UNITS_DEGREES
26	bh	1825	from Thuban.Model.messages import PROJECTION_ADDED, PROJECTION_REMOVED, \
27			PROJECTION_REPLACED
28	jonathan	698	import Thuban.Model.resource as resource
29	bh	333
30	bh	1259	from xmlsupport import sax_eventlist
31	jonathan	698
32	jonathan	719	from xml.sax import SAXParseException
33	jonathan	698
34	jonathan	719
35	bh	333	class TestProjection(unittest.TestCase, support.FloatComparisonMixin):
36
37			"""Test cases for the Thuban-specific Projection class
38			"""
39
40			def test(self):
41			"""Test Projection"""
42	jonathan	761	params = ["zone=26", "proj=utm", "ellps=clrk66"]
43			proj = Projection(params)
44			self.assertEquals(proj.params, params)
45	bh	333
46			# It's not clear whether this value is really the correct one
47			# but a test failure here probably still means a bug somewhere
48			self.assertFloatSeqEqual(proj.Forward(0, 0),
49			[3623101.8103431347, 0.0],
50			epsilon = 1e-5)
51			self.assertFloatSeqEqual(proj.Inverse(3623101.8103431347, 0.0),
52			[-0.00065775699878736467, 0])
53
54			self.assertFloatSeqEqual(proj.ForwardBBox((0, 0, 2, 2)),
55			(3620891.3077618643, 0.0,
56			3875381.8535437919, 252962.10480170773),
57			epsilon = 1e-5)
58
59	jonathan	761	# GetName()
60			self.assertEquals(proj.GetName(), _("Unknown"))
61
62			# GetParameter()
63	jonathan	714	self.assertEquals(proj.GetParameter("zone"), "26")
64			self.assertEquals(proj.GetParameter("proj"), "utm")
65			self.assertEquals(proj.GetParameter("ellps"), "clrk66")
66			self.assertEquals(proj.GetParameter("hallo"), "")
67	bh	333
68	jonathan	761	# GetAllParameters()
69			self.assertEquals(proj.GetAllParameters(), params)
70	bh	333
71	jonathan	761	# GetName()
72			proj = Projection(params, "MyName")
73			self.assertEquals(proj.GetName(), "MyName")
74
75	bh	1798	def test_get_parameter_without_equals_sign(self):
76			"""Test Projection.GetParameter() for a parameter without '=' sign"""
77			proj = Projection(["proj=utm", "zone=34", "south", "ellps=clrk66"])
78			# The Projection class pretends that for parameters specified
79			# without a value the value is the same as the parameter name.
80			self.assertEquals(proj.GetParameter("south"), "south")
81
82	bh	1793	def test_get_projection_units_geo(self):
83			"""Test Projection.GetProjectedUnits() for geographic projection"""
84			proj = Projection(["proj=latlong", "to_meter=0.017453292519943295",
85			"ellps=clrk66"])
86			self.assertEquals(proj.GetProjectedUnits(), PROJ_UNITS_DEGREES)
87	jonathan	761
88	bh	1793	def test_get_projection_units_normal(self):
89			"""Test Projection.GetProjectedUnits() for normal projection"""
90			proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"])
91			self.assertEquals(proj.GetProjectedUnits(), PROJ_UNITS_METERS)
92
93	bh	1818	def test_label(self):
94			"""Test Projection.Label() without epsg"""
95			proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"],
96			name = "My Projection")
97			self.assertEquals(proj.Label(), "My Projection")
98	bh	1793
99	bh	1818	def test_label_epsg(self):
100			"""Test Projection.Label() with epsg"""
101			proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"],
102			name = "My Projection", epsg="42")
103			self.assertEquals(proj.Label(), "EPSG 42 My Projection")
104	jonathan	698
105	bh	1818	def test_epsgcode_for_non_epsg_projection(self):
106			"""Test Projection.EPSGCode() without epsg"""
107			proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"],
108			name = "My Projection")
109			self.assertEquals(proj.EPSGCode(), None)
110	jonathan	698
111	bh	1818	def test_epsgcode_for_real_epsg_projection(self):
112			"""Test Projection.EPSGCode() with epsg"""
113			proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"],
114			name = "My Projection", epsg="42")
115			self.assertEquals(proj.EPSGCode(), "42")
116	jonathan	698
117
118
119	bh	1821	class TestProjFileSimple:
120	bh	1813
121	bh	1821	def test_init(self):
122			"""Test ProjFile coinstructor"""
123			proj_file = ProjFile("some_filename")
124			self.assertEquals(proj_file.GetFilename(), "some_filename")
125			self.assertEquals(len(proj_file.GetProjections()), 0)
126	bh	1813
127	bh	1821	def test_set_filename(self):
128			"""Test ProjFile.SetFilename()"""
129			proj_file = ProjFile("some_filename")
130			proj.SetFilename("other_name")
131			self.assertEquals(proj_file.GetFilename(), "other_name")
132	bh	1813
133
134	bh	1825	class TestProjFile(unittest.TestCase, support.SubscriberMixin):
135	bh	1821
136	jonathan	698	"""Test cases for reading and writing projection files.
137			"""
138
139	bh	1821	def setUp(self):
140	bh	1825	self.clear_messages()
141	bh	1821	self.proj0 = Projection(["proj=tmerc", "ellps=clrk66"])
142			self.proj1 = Projection(["proj=utm", "ellps=clrk66"])
143			self.proj2 = Projection(["proj=lcc", "ellps=clrk66",
144			"lat_1=0", "lat_2=20"])
145	bh	1825	self.proj_file = ProjFile("some_filename")
146			for msg in [PROJECTION_ADDED, PROJECTION_REMOVED, PROJECTION_REPLACED]:
147			self.proj_file.Subscribe(msg, self.subscribe_with_params, msg)
148	jonathan	742
149	bh	1821	def test_add_remove(self):
150			"""Test ProjFile.Add() and ProjFile.Remove()"""
151	bh	1825	self.proj_file.Add(self.proj0)
152			self.proj_file.Add(self.proj1)
153			self.assertEquals(self.proj_file.GetProjections(),
154			[self.proj0, self.proj1])
155			self.check_messages([(self.proj0, PROJECTION_ADDED),
156			(self.proj1, PROJECTION_ADDED)])
157			self.clear_messages()
158	jonathan	742
159	bh	1825	self.proj_file.Remove(self.proj0)
160			self.assertEquals(self.proj_file.GetProjections(), [self.proj1])
161			self.check_messages([(self.proj0, PROJECTION_REMOVED)])
162
163	bh	1821	def test_remove_non_existing(self):
164			"""Test ProjFile.Remove(<proj not in projfile>)"""
165	bh	1825	self.assertRaises(ValueError, self.proj_file.Remove, self.proj0)
166			# Nothing happened, so no messages should have been sent
167			self.check_messages([])
168	jonathan	742
169	bh	1821	def test_replace(self):
170			"""Test ProjFile.Replace()"""
171	bh	1825	self.proj_file.Add(self.proj0)
172			self.proj_file.Add(self.proj1)
173			self.clear_messages()
174	jonathan	761
175	bh	1821	# Replace()
176	bh	1825	self.proj_file.Replace(self.proj0, self.proj2)
177			self.assertEquals(self.proj_file.GetProjections(),
178			[self.proj2, self.proj1])
179			self.check_messages([(self.proj0, self.proj2, PROJECTION_REPLACED)])
180	jonathan	742
181	bh	1821	def test_replace_non_existing(self):
182			"""Test ProjFile.Replace(<proj not in projfile>, <some proj>)"""
183	bh	1825	self.proj_file.Add(self.proj0)
184			self.proj_file.Add(self.proj1)
185			self.clear_messages()
186	bh	1821	self.assertRaises(ValueError,
187	bh	1825	self.proj_file.Replace, self.proj2, self.proj0)
188			# All projections should still be there
189			self.assertEquals(self.proj_file.GetProjections(),
190			[self.proj0, self.proj1])
191			# Nothing happened, so no messages should have been sent
192			self.check_messages([])
193	jonathan	742
194
195	bh	1821	class ProjFileTest(unittest.TestCase, support.FileTestMixin,
196			xmlsupport.ValidationTest):
197	jonathan	742
198	bh	1821	"""Base class for the proj file tests that read or write files"""
199	jonathan	742
200	bh	1821	def filename(self):
201			"""Return the filename for the test"""
202			return self.temp_file_name(self.id() + ".proj")
203	jonathan	742
204
205	bh	1821	class ProjFileReadTests(ProjFileTest):
206	jonathan	752
207	bh	1821	"""Test read ProjFile objects from files"""
208	jonathan	761
209	bh	1811	def test_read_non_existing_file(self):
210			"""Test read_proj_file with non-existing file"""
211	jonathan	719	self.assertRaises(IOError,
212	bh	1811	resource.read_proj_file,
213			self.temp_file_name("nonexistent.proj"))
214	jonathan	719
215	bh	1811	def test_read_unreadable_file(self):
216			"""Test read_proj_file with unreadable file
217
218			As currently written this only works on unix-like systems and
219			not e.g. on MS Windows.
220			"""
221	bh	1813	filename = self.filename()
222	jonathan	719	file = open(filename, "w")
223			file.close()
224			os.chmod(filename, 0200) # write-only
225	jonathan	1167	self.assertRaises(IOError, resource.read_proj_file, filename)
226	jonathan	719
227	bh	1811	def test_read_empty_file(self):
228			"""Test read_proj_file with empty file"""
229	bh	1813	filename = self.filename()
230	jonathan	719	file = open(filename, "w")
231			file.close()
232
233	jonathan	1167	self.assertRaises(SAXParseException, resource.read_proj_file, filename)
234	jonathan	719
235	bh	1787	def test_get_system_proj_file(self):
236			"""Test resource.get_system_proj_file()
237	jonathan	698
238	bh	1787	This is primarily to test whether the system proj file contains
239			invalid projection paramers and whether the proj file is not
240			empty
241			"""
242			projfile, warnings = resource.get_system_proj_file()
243			self.assertEquals(warnings, [])
244			self.assert_(len(projfile.GetProjections()) > 0)
245
246
247	bh	1821	class WriteProjFileTests(ProjFileTest):
248	bh	1813
249			"""Test cases for writing proj files"""
250
251			def compare_xml(self, xml1, xml2):
252			self.assertEquals(sax_eventlist(xml1), sax_eventlist(xml2))
253
254	bh	1818	def doTestWrite(self, projfile, expected):
255	bh	1813	filename = self.filename()
256
257	bh	1818	resource.write_proj_file(projfile)
258	bh	1813
259			file = open(filename)
260			written_contents = file.read()
261			file.close()
262			self.compare_xml(written_contents, expected)
263			self.validate_data(written_contents)
264			self.validate_data(expected)
265
266			def test_write(self):
267			"""Test write_proj_file"""
268	bh	1818	pf = ProjFile(self.filename())
269			pf.Add(Projection(['proj=tmerc', 'ellps=clrk66',
270			'lat_0=90w', 'lon_0=90w', 'k=1'],
271			"Transverse Mercator",))
272			pf.Add(Projection(["proj=tmerc",
273			"lat_0=0.000000000", "lon_0=-62.000000000",
274			"k=0.999500", "x_0=400000.000", "y_0=0.000",
275			"ellps=clrk80", "units=m"],
276			"Anguilla 1957 / British West Indies Grid",
277			epsg="200"))
278			file_contents = '''<?xml version="1.0" encoding="UTF-8"?>
279			<!DOCTYPE projectionlist SYSTEM "projfile.dtd">
280			<projectionlist>
281			<projection name="Transverse Mercator">
282			<parameter value="proj=tmerc"/>
283			<parameter value="ellps=clrk66"/>
284			<parameter value="lat_0=90w"/>
285			<parameter value="lon_0=90w"/>
286			<parameter value="k=1"/>
287			</projection>
288			<projection epsg="200"
289			name="Anguilla 1957 / British West Indies Grid">
290			<parameter value="proj=tmerc"/>
291			<parameter value="lat_0=0.000000000"/>
292			<parameter value="lon_0=-62.000000000"/>
293			<parameter value="k=0.999500"/>
294			<parameter value="x_0=400000.000"/>
295			<parameter value="y_0=0.000"/>
296			<parameter value="ellps=clrk80"/>
297			<parameter value="units=m"/>
298			</projection>
299			</projectionlist>
300			'''
301			self.doTestWrite(pf, file_contents)
302	bh	1813
303			def test_write_empty_file(self):
304			"""Test write empty ProjFile"""
305	bh	1818	pf = ProjFile(self.filename())
306			file_contents = '''<?xml version="1.0" encoding="UTF-8"?>
307			<!DOCTYPE projectionlist SYSTEM "projfile.dtd">
308			<projectionlist>
309			</projectionlist>
310			'''
311			self.doTestWrite(pf, file_contents)
312	bh	1813
313
314	bh	1818	class TestLoadingProjFile(support.FileLoadTestCase):
315
316			file_extension = ".proj"
317			file_contents = '''\
318			<?xml version="1.0" encoding="UTF-8"?>
319			<!DOCTYPE projectionlist SYSTEM "projfile.dtd">
320			<projectionlist>
321			<projection name="Transverse Mercator">
322			<parameter value="proj=tmerc"/>
323			<parameter value="ellps=clrk66"/>
324			<parameter value="lat_0=90w"/>
325			<parameter value="lon_0=90w"/>
326			<parameter value="k=1"/>
327			</projection>
328			<projection epsg="200" name="Anguilla 1957 / British West Indies Grid">
329			<parameter value="proj=tmerc"/>
330			<parameter value="lat_0=0.000000000"/>
331			<parameter value="lon_0=-62.000000000"/>
332			<parameter value="k=0.999500"/>
333			<parameter value="x_0=400000.000"/>
334			<parameter value="y_0=0.000"/>
335			<parameter value="ellps=clrk80"/>
336			<parameter value="units=m"/>
337			</projection>
338			</projectionlist>
339			'''
340
341			def check_projection(self, proj, label, parameters):
342			"""Check the values of the proj's label and parameters"""
343			self.assertEquals(proj.Label(), label)
344			params = proj.GetAllParameters()[:]
345			params.sort()
346			self.assertEquals(params, parameters)
347
348			def test(self):
349			projfile, warnings = resource.read_proj_file(self.filename())
350			# no warnings
351			self.assertEquals(warnings, [])
352
353			# There are two projections
354			projs = projfile.GetProjections()
355			self.assertEquals(len(projs), 2)
356
357			self.check_projection(projs[0],
358			"Transverse Mercator",
359			['ellps=clrk66', 'k=1', 'lat_0=90w', 'lon_0=90w',
360			'proj=tmerc'])
361			self.check_projection(projs[1],
362			"EPSG 200 Anguilla 1957 / British West Indies Grid",
363			["ellps=clrk80", "k=0.999500",
364			"lat_0=0.000000000", "lon_0=-62.000000000",
365			"proj=tmerc", "units=m",
366			"x_0=400000.000", "y_0=0.000"])
367
368
369			class TestLoadingProjFileWithEmptyProjectionlist(support.FileLoadTestCase):
370
371			file_extension = ".proj"
372			file_contents = '''\
373			<?xml version="1.0" encoding="UTF-8"?>
374			<!DOCTYPE projectionlist SYSTEM "projfile.dtd">
375			<projectionlist>
376			</projectionlist>
377			'''
378
379			def test(self):
380			projfile, warnings = resource.read_proj_file(self.filename())
381			# no warnings
382			self.assertEquals(warnings, [])
383
384			# There are no projections
385			self.assertEquals(len(projfile.GetProjections()), 0)
386
387
388	bh	1787	class TestProjFileWithInvalidParameters(unittest.TestCase,
389			support.FileLoadTestCase):
390
391			file_extension = ".proj"
392			file_contents = '''\
393			<?xml version="1.0" encoding="UTF-8"?>
394			<!DOCTYPE projectionlist SYSTEM "projfile.dtd">
395			<projectionlist>
396			<projection name="Universal Transverse Mercator">
397			<parameter value="proj=utm"/>
398			<parameter value="ellps=clrk66"/>
399			<!-- an invalid zone number to trigger the parameter checking
400			in the proj library -->
401			<parameter value="zone=1000"/>
402			</projection>
403			<projection name="Transverse Mercator">
404			<parameter value="proj=tmerc"/>
405			<parameter value="ellps=clrk66"/>
406			<parameter value="lat_0=90w"/>
407			<parameter value="lon_0=90w"/>
408			<parameter value="k=1"/>
409			</projection>
410			</projectionlist>
411			'''
412
413			def setUp(self):
414			support.FileLoadTestCase.setUp(self)
415
416			def test(self):
417			"""Test reading a proj file with invalid parameters"""
418			projfile, warnings = resource.read_proj_file(self.filename())
419			projs = projfile.GetProjections()
420			self.assertEquals(len(projs), 1)
421			params = projs[0].GetAllParameters()[:]
422			params.sort()
423			self.assertEquals(params, ['ellps=clrk66', 'k=1', 'lat_0=90w',
424			'lon_0=90w', 'proj=tmerc'])
425			self.assertEquals(warnings,
426			['Error in projection "Universal Transverse Mercator":'
427			' invalid UTM zone number'])
428
429
430	bh	333	if __name__ == "__main__":
431			unittest.main()
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