| 1 |
# Copyright (c) 2002 by Intevation GmbH |
| 2 |
# 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 |
|
| 18 |
import support |
| 19 |
support.initthuban() |
| 20 |
|
| 21 |
from Thuban.Model.proj import Projection, ProjFile |
| 22 |
|
| 23 |
import Thuban.Model.resource as resource |
| 24 |
|
| 25 |
from test_save import sax_eventlist |
| 26 |
|
| 27 |
|
| 28 |
class TestProjection(unittest.TestCase, support.FloatComparisonMixin): |
| 29 |
|
| 30 |
"""Test cases for the Thuban-specific Projection class |
| 31 |
""" |
| 32 |
|
| 33 |
def test(self): |
| 34 |
"""Test Projection""" |
| 35 |
proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"]) |
| 36 |
self.assertEquals(proj.params, ["zone=26", "proj=utm", "ellps=clrk66"]) |
| 37 |
|
| 38 |
# It's not clear whether this value is really the correct one |
| 39 |
# but a test failure here probably still means a bug somewhere |
| 40 |
self.assertFloatSeqEqual(proj.Forward(0, 0), |
| 41 |
[3623101.8103431347, 0.0], |
| 42 |
epsilon = 1e-5) |
| 43 |
self.assertFloatSeqEqual(proj.Inverse(3623101.8103431347, 0.0), |
| 44 |
[-0.00065775699878736467, 0]) |
| 45 |
|
| 46 |
self.assertFloatSeqEqual(proj.ForwardBBox((0, 0, 2, 2)), |
| 47 |
(3620891.3077618643, 0.0, |
| 48 |
3875381.8535437919, 252962.10480170773), |
| 49 |
epsilon = 1e-5) |
| 50 |
|
| 51 |
self.assertEquals(proj.GetParameter("zone"), "26") |
| 52 |
self.assertEquals(proj.GetParameter("proj"), "utm") |
| 53 |
self.assertEquals(proj.GetParameter("ellps"), "clrk66") |
| 54 |
self.assertEquals(proj.GetParameter("hallo"), "") |
| 55 |
|
| 56 |
|
| 57 |
sample_projfile = '''\ |
| 58 |
<?xml version="1.0" encoding="UTF-8"?> |
| 59 |
<!DOCTYPE projfile SYSTEM "thuban.dtd"> |
| 60 |
<projectionlist> |
| 61 |
<projection name="Transverse Mercartor"> |
| 62 |
<parameter value="proj=tmerc"/> |
| 63 |
<parameter value="ellps=clrk66"/> |
| 64 |
<parameter value="lat_0=90w"/> |
| 65 |
<parameter value="lon_0=90w"/> |
| 66 |
<parameter value="k=1"/> |
| 67 |
</projection> |
| 68 |
<projection name="Transverse Mercartor"> |
| 69 |
<parameter value="proj=tmerc"/> |
| 70 |
<parameter value="ellps=clrk66"/> |
| 71 |
<parameter value="lat_0=30w"/> |
| 72 |
<parameter value="lon_0=30w"/> |
| 73 |
<parameter value="k=1"/> |
| 74 |
</projection> |
| 75 |
<projection name="Universal Transverse Mercartor"> |
| 76 |
<parameter value="proj=utm"/> |
| 77 |
<parameter value="ellps=clrk66"/> |
| 78 |
<parameter value="zone=1"/> |
| 79 |
</projection> |
| 80 |
</projectionlist> |
| 81 |
''' |
| 82 |
|
| 83 |
sample_projfile_data = [("Transverse Mercartor", ["proj=tmerc", |
| 84 |
"ellps=clrk66", |
| 85 |
"lat_0=90w", |
| 86 |
"lon_0=90w", |
| 87 |
"k=1"]), |
| 88 |
("Transverse Mercartor", ["proj=tmerc", |
| 89 |
"ellps=clrk66", |
| 90 |
"lat_0=30w", |
| 91 |
"lon_0=30w", |
| 92 |
"k=1"]), |
| 93 |
("Universal Transverse Mercartor", ["proj=utm", |
| 94 |
"ellps=clrk66", |
| 95 |
"zone=1"])] |
| 96 |
|
| 97 |
sample_projfile2 = '''\ |
| 98 |
<?xml version="1.0" encoding="UTF-8"?> |
| 99 |
<!DOCTYPE projfile SYSTEM "thuban.dtd"> |
| 100 |
<projectionlist> |
| 101 |
</projectionlist> |
| 102 |
''' |
| 103 |
|
| 104 |
sample_projfile_data2 = [] |
| 105 |
|
| 106 |
class TestProjFile(unittest.TestCase, support.FileTestMixin): |
| 107 |
|
| 108 |
"""Test cases for reading and writing projection files. |
| 109 |
""" |
| 110 |
|
| 111 |
def compare_xml(self, xml1, xml2): |
| 112 |
self.assertEquals(sax_eventlist(xml1), sax_eventlist(xml2)) |
| 113 |
|
| 114 |
def testRead(self): |
| 115 |
"""Test ReadProjFile""" |
| 116 |
|
| 117 |
self.doTestRead(sample_projfile_data, sample_projfile) |
| 118 |
self.doTestRead(sample_projfile_data2, sample_projfile2) |
| 119 |
|
| 120 |
def testWrite(self): |
| 121 |
"""Test WriteProjFile""" |
| 122 |
|
| 123 |
self.doTestWrite(sample_projfile_data, sample_projfile) |
| 124 |
self.doTestWrite(sample_projfile_data2, sample_projfile2) |
| 125 |
|
| 126 |
def doTestWrite(self, data, expected): |
| 127 |
|
| 128 |
filename = self.temp_file_name("projfile.proj") |
| 129 |
|
| 130 |
pf = ProjFile(filename) |
| 131 |
for proj in data: |
| 132 |
pf.Add(Projection(proj[1], proj[0])) |
| 133 |
|
| 134 |
resource.WriteProjFile(pf) |
| 135 |
|
| 136 |
file = open(filename) |
| 137 |
written_contents = file.read() |
| 138 |
file.close() |
| 139 |
self.compare_xml(written_contents, expected) |
| 140 |
|
| 141 |
def doTestRead(self, data, input): |
| 142 |
|
| 143 |
filename = self.temp_file_name("projfile.proj") |
| 144 |
file = open(filename, "w") |
| 145 |
file.write(input) |
| 146 |
file.close() |
| 147 |
|
| 148 |
pf = resource.ReadProjFile(filename) |
| 149 |
|
| 150 |
eq = self.assertEquals |
| 151 |
|
| 152 |
eq(pf.GetFileName(), filename) |
| 153 |
|
| 154 |
for proj, d in zip(pf.GetProjections(), data): |
| 155 |
eq(proj.GetName(), d[0]) |
| 156 |
for param in proj.GetAllParameters(): |
| 157 |
self.assert_(param in d[1]) |
| 158 |
|
| 159 |
|
| 160 |
if __name__ == "__main__": |
| 161 |
unittest.main() |
Parent Directory
| 
Revision Log