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# Copyright (c) 2002 by Intevation GmbH |
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# Authors: |
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# Bernhard Herzog <[email protected]> |
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# |
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# This program is free software under the GPL (>=v2) |
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# Read the file COPYING coming with Thuban for details. |
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""" |
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Test saving a thuban session as XML |
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""" |
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__version__ = "$Revision$" |
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# $Source$ |
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# $Id$ |
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import os |
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import unittest |
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from StringIO import StringIO |
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import xml.sax |
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import xml.sax.handler |
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from xml.sax import make_parser, ErrorHandler |
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import support |
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support.initthuban() |
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from Thuban.Model.save import save_session |
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from Thuban.Model.session import Session |
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from Thuban.Model.map import Map |
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from Thuban.Model.layer import Layer |
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from Thuban.Model.proj import Projection |
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class SaxEventLister(xml.sax.handler.ContentHandler): |
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def __init__(self): |
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self.eventlist = [] |
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def startElementNS(self, name, qname, attrs): |
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items = attrs.items() |
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items.sort() |
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self.eventlist.append(("start", name, qname, items)) |
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def endElementNS(self, name, qname): |
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self.eventlist.append(("end", name, qname)) |
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def sax_eventlist(data): |
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"""Return a list of SAX event generated for the XML data. |
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""" |
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handler = SaxEventLister() |
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parser = make_parser() |
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parser.setContentHandler(handler) |
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parser.setErrorHandler(ErrorHandler()) |
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parser.setFeature(xml.sax.handler.feature_namespaces, 1) |
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parser.setFeature(xml.sax.handler.feature_validation, 0) |
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parser.setFeature(xml.sax.handler.feature_external_ges, 0) |
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parser.setFeature(xml.sax.handler.feature_external_pes, 0) |
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inpsrc = xml.sax.InputSource() |
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inpsrc.setByteStream(StringIO(data)) |
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parser.parse(inpsrc) |
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return handler.eventlist |
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class SaveSessionTest(unittest.TestCase, support.FileTestMixin): |
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def compare_xml(self, xml1, xml2): |
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self.assertEquals(sax_eventlist(xml1), sax_eventlist(xml2)) |
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def testEmptySession(self): |
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"""Save an empty session""" |
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session = Session("empty session") |
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filename = self.temp_file_name("save_emptysession.thuban") |
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save_session(session, filename) |
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session.Destroy() |
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file = open(filename) |
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written_contents = file.read() |
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file.close() |
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self.compare_xml(written_contents, |
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'<?xml version="1.0" encoding="UTF-8"?>\n' |
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'<!DOCTYPE session SYSTEM "thuban.dtd">\n' |
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'<session title="empty session">\n</session>\n') |
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def testSingleLayer(self): |
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"""Save a session with a single map with a single layer""" |
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# deliberately put an apersand in the title :) |
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session = Session("single map&layer") |
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proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"]) |
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map = Map("Test Map", projection = proj) |
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session.AddMap(map) |
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# use shapefile from the example data |
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shpfile = os.path.join(os.path.dirname(__file__), |
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os.pardir, "Data", "iceland", "political.shp") |
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layer = Layer("My Layer", shpfile) |
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map.AddLayer(layer) |
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filename = self.temp_file_name("save_singlemap.thuban") |
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save_session(session, filename) |
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session.Destroy() |
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file = open(filename) |
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written_contents = file.read() |
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file.close() |
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expected_contents = '''<?xml version="1.0" encoding="UTF-8"?> |
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<!DOCTYPE session SYSTEM "thuban.dtd"> |
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<session title="single map&layer"> |
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<map title="Test Map"> |
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<projection> |
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<parameter value="zone=26"/> |
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<parameter value="proj=utm"/> |
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<parameter value="ellps=clrk66"/> |
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</projection> |
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<layer title="My Layer" filename="%s" |
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fill="None" stroke="#000000" stroke_width="1"/> |
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</map> |
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</session>''' % os.path.join("..", "..", "Data", "iceland", |
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"political.shp") |
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#print written_contents |
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#print "********************************************" |
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#print expected_contents |
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self.compare_xml(written_contents, expected_contents) |
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if __name__ == "__main__": |
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# Fake the __file__ global because it's needed by a test |
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import sys |
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__file__ = sys.argv[0] |
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unittest.main() |
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