| 1 |
# Copyright (c) 2002, 2003 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 saving a thuban session as XML |
| 10 |
""" |
| 11 |
|
| 12 |
__version__ = "$Revision$" |
| 13 |
# $Source$ |
| 14 |
# $Id$ |
| 15 |
|
| 16 |
import os |
| 17 |
import unittest |
| 18 |
from StringIO import StringIO |
| 19 |
|
| 20 |
import xml.sax |
| 21 |
import xml.sax.handler |
| 22 |
from xml.sax import make_parser, ErrorHandler, SAXNotRecognizedException |
| 23 |
|
| 24 |
import support |
| 25 |
support.initthuban() |
| 26 |
|
| 27 |
from Thuban.Model.save import save_session |
| 28 |
from Thuban.Model.session import Session |
| 29 |
from Thuban.Model.map import Map |
| 30 |
from Thuban.Model.layer import Layer, RasterLayer |
| 31 |
from Thuban.Model.proj import Projection |
| 32 |
|
| 33 |
|
| 34 |
class SaxEventLister(xml.sax.handler.ContentHandler): |
| 35 |
|
| 36 |
def __init__(self): |
| 37 |
self.eventlist = [] |
| 38 |
|
| 39 |
def startElementNS(self, name, qname, attrs): |
| 40 |
items = attrs.items() |
| 41 |
items.sort() |
| 42 |
self.eventlist.append(("start", name, qname, items)) |
| 43 |
|
| 44 |
def endElementNS(self, name, qname): |
| 45 |
self.eventlist.append(("end", name, qname)) |
| 46 |
|
| 47 |
|
| 48 |
def sax_eventlist(data): |
| 49 |
"""Return a list of SAX event generated for the XML data. |
| 50 |
""" |
| 51 |
handler = SaxEventLister() |
| 52 |
parser = make_parser() |
| 53 |
parser.setContentHandler(handler) |
| 54 |
parser.setErrorHandler(ErrorHandler()) |
| 55 |
parser.setFeature(xml.sax.handler.feature_namespaces, 1) |
| 56 |
|
| 57 |
# |
| 58 |
# see comment at the end of Thuban/Model/load.py |
| 59 |
# |
| 60 |
try: |
| 61 |
parser.setFeature(xml.sax.handler.feature_validation, 0) |
| 62 |
parser.setFeature(xml.sax.handler.feature_external_ges, 0) |
| 63 |
parser.setFeature(xml.sax.handler.feature_external_pes, 0) |
| 64 |
except SAXNotRecognizedException: |
| 65 |
pass |
| 66 |
|
| 67 |
inpsrc = xml.sax.InputSource() |
| 68 |
inpsrc.setByteStream(StringIO(data)) |
| 69 |
parser.parse(inpsrc) |
| 70 |
|
| 71 |
return handler.eventlist |
| 72 |
|
| 73 |
class SaveSessionTest(unittest.TestCase, support.FileTestMixin): |
| 74 |
|
| 75 |
def compare_xml(self, xml1, xml2): |
| 76 |
self.assertEquals(sax_eventlist(xml1), sax_eventlist(xml2)) |
| 77 |
|
| 78 |
def testEmptySession(self): |
| 79 |
"""Save an empty session""" |
| 80 |
session = Session("empty session") |
| 81 |
filename = self.temp_file_name("save_emptysession.thuban") |
| 82 |
save_session(session, filename) |
| 83 |
session.Destroy() |
| 84 |
|
| 85 |
file = open(filename) |
| 86 |
written_contents = file.read() |
| 87 |
file.close() |
| 88 |
self.compare_xml(written_contents, |
| 89 |
'<?xml version="1.0" encoding="UTF-8"?>\n' |
| 90 |
'<!DOCTYPE session SYSTEM "thuban.dtd">\n' |
| 91 |
'<session title="empty session">\n</session>\n') |
| 92 |
|
| 93 |
def testSingleLayer(self): |
| 94 |
"""Save a session with a single map with a single layer""" |
| 95 |
# deliberately put an apersand in the title :) |
| 96 |
session = Session("single map&layer") |
| 97 |
proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"]) |
| 98 |
map = Map("Test Map", projection = proj) |
| 99 |
session.AddMap(map) |
| 100 |
# use shapefile from the example data |
| 101 |
shpfile = os.path.join(os.path.dirname(__file__), |
| 102 |
os.pardir, "Data", "iceland", "political.shp") |
| 103 |
layer = Layer("My Layer", session.OpenShapefile(shpfile)) |
| 104 |
map.AddLayer(layer) |
| 105 |
|
| 106 |
filename = self.temp_file_name("save_singlemap.thuban") |
| 107 |
save_session(session, filename) |
| 108 |
|
| 109 |
file = open(filename) |
| 110 |
written_contents = file.read() |
| 111 |
file.close() |
| 112 |
expected_template = '''<?xml version="1.0" encoding="UTF-8"?> |
| 113 |
<!DOCTYPE session SYSTEM "thuban.dtd"> |
| 114 |
<session title="single map&layer"> |
| 115 |
<map title="Test Map"> |
| 116 |
<projection name="Unknown"> |
| 117 |
<parameter value="zone=26"/> |
| 118 |
<parameter value="proj=utm"/> |
| 119 |
<parameter value="ellps=clrk66"/> |
| 120 |
</projection> |
| 121 |
<layer title="My Layer" filename="%s" |
| 122 |
fill="None" stroke="#000000" stroke_width="1" visible="%s"/> |
| 123 |
</map> |
| 124 |
</session>''' |
| 125 |
|
| 126 |
expected_contents = expected_template % \ |
| 127 |
(os.path.join("..", "..", "Data", "iceland", "political.shp"), |
| 128 |
"true") |
| 129 |
|
| 130 |
#print written_contents |
| 131 |
#print "********************************************" |
| 132 |
#print expected_contents |
| 133 |
self.compare_xml(written_contents, expected_contents) |
| 134 |
|
| 135 |
layer.SetVisible(False) |
| 136 |
save_session(session, filename) |
| 137 |
|
| 138 |
file = open(filename) |
| 139 |
written_contents = file.read() |
| 140 |
file.close() |
| 141 |
expected_contents = expected_template % \ |
| 142 |
(os.path.join("..", "..", "Data", "iceland", "political.shp"), |
| 143 |
"false") |
| 144 |
|
| 145 |
#print written_contents |
| 146 |
#print "********************************************" |
| 147 |
#print expected_contents |
| 148 |
self.compare_xml(written_contents, expected_contents) |
| 149 |
|
| 150 |
session.Destroy() |
| 151 |
|
| 152 |
def testLayerProjection(self): |
| 153 |
# deliberately put an apersand in the title :) |
| 154 |
session = Session("single map&layer") |
| 155 |
proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"]) |
| 156 |
map = Map("Test Map", projection = proj) |
| 157 |
session.AddMap(map) |
| 158 |
# use shapefile from the example data |
| 159 |
shpfile = os.path.join(os.path.dirname(__file__), |
| 160 |
os.pardir, "Data", "iceland", "political.shp") |
| 161 |
layer = Layer("My Layer", session.OpenShapefile(shpfile)) |
| 162 |
proj = Projection(["proj=lcc", "ellps=clrk66"], "Layer Projection") |
| 163 |
layer.SetProjection(proj) |
| 164 |
map.AddLayer(layer) |
| 165 |
|
| 166 |
filename = self.temp_file_name("save_singlemap.thuban") |
| 167 |
save_session(session, filename) |
| 168 |
session.Destroy() |
| 169 |
|
| 170 |
file = open(filename) |
| 171 |
written_contents = file.read() |
| 172 |
file.close() |
| 173 |
expected_contents = '''<?xml version="1.0" encoding="UTF-8"?> |
| 174 |
<!DOCTYPE session SYSTEM "thuban.dtd"> |
| 175 |
<session title="single map&layer"> |
| 176 |
<map title="Test Map"> |
| 177 |
<projection name="Unknown"> |
| 178 |
<parameter value="zone=26"/> |
| 179 |
<parameter value="proj=utm"/> |
| 180 |
<parameter value="ellps=clrk66"/> |
| 181 |
</projection> |
| 182 |
<layer title="My Layer" filename="%s" |
| 183 |
fill="None" stroke="#000000" stroke_width="1" visible="true"> |
| 184 |
<projection name="Layer Projection"> |
| 185 |
<parameter value="proj=lcc"/> |
| 186 |
<parameter value="ellps=clrk66"/> |
| 187 |
</projection> |
| 188 |
</layer> |
| 189 |
</map> |
| 190 |
</session>''' % os.path.join("..", "..", "Data", "iceland", |
| 191 |
"political.shp") |
| 192 |
#print written_contents |
| 193 |
#print "********************************************" |
| 194 |
#print expected_contents |
| 195 |
self.compare_xml(written_contents, expected_contents) |
| 196 |
|
| 197 |
|
| 198 |
def testRasterLayer(self): |
| 199 |
# deliberately put an apersand in the title :) |
| 200 |
session = Session("single map&layer") |
| 201 |
map = Map("Test Map") |
| 202 |
session.AddMap(map) |
| 203 |
# use shapefile from the example data |
| 204 |
imgfile = os.path.join(os.path.dirname(__file__), |
| 205 |
os.pardir, "Data", "iceland", "island.tif") |
| 206 |
layer = RasterLayer("My RasterLayer", imgfile) |
| 207 |
map.AddLayer(layer) |
| 208 |
|
| 209 |
filename = self.temp_file_name("save_singlemap.thuban") |
| 210 |
save_session(session, filename) |
| 211 |
session.Destroy() |
| 212 |
|
| 213 |
file = open(filename) |
| 214 |
written_contents = file.read() |
| 215 |
file.close() |
| 216 |
expected_contents = '''<?xml version="1.0" encoding="UTF-8"?> |
| 217 |
<!DOCTYPE session SYSTEM "thuban.dtd"> |
| 218 |
<session title="single map&layer"> |
| 219 |
<map title="Test Map"> |
| 220 |
<rasterlayer title="My RasterLayer" filename="%s" |
| 221 |
visible="true"> |
| 222 |
</rasterlayer> |
| 223 |
</map> |
| 224 |
</session>''' % os.path.join(os.path.dirname(__file__), |
| 225 |
os.pardir, "Data", "iceland", |
| 226 |
"island.tif") |
| 227 |
#print written_contents |
| 228 |
#print "********************************************" |
| 229 |
#print expected_contents |
| 230 |
self.compare_xml(written_contents, expected_contents) |
| 231 |
|
| 232 |
|
| 233 |
if __name__ == "__main__": |
| 234 |
# Fake the __file__ global because it's needed by a test |
| 235 |
import sys |
| 236 |
__file__ = sys.argv[0] |
| 237 |
support.run_tests() |
Parent Directory
| 
Revision Log