/[thuban]/branches/WIP-pyshapelib-bramz/test/test_load.py
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revision 1417 by bh, Tue Jul 15 08:43:53 2003 UTC revision 2034 by bh, Mon Dec 22 16:35:16 2003 UTC
# Line 34  import unittest Line 34  import unittest
34  import support  import support
35  support.initthuban()  support.initthuban()
36    
37    import postgissupport
38  from xmlsupport import sax_eventlist  from xmlsupport import sax_eventlist
39    
40  import dbflib  import dbflib
41    import shapelib
42    
43  from Thuban.Model.save import save_session  from Thuban.Model.save import save_session
44  from Thuban.Model.load import load_session, parse_color, LoadError  from Thuban.Model.load import load_session, parse_color, LoadError, \
45         LoadCancelled
46  from Thuban.Model.color import Transparent  from Thuban.Model.color import Transparent
47  from Thuban.Model.classification import ClassGroupProperties, ClassGroupRange,\  from Thuban.Model.classification import ClassGroupProperties, ClassGroupRange,\
48      ClassGroupSingleton, ClassGroupDefault      ClassGroupSingleton, ClassGroupDefault
49    from Thuban.Model.postgisdb import ConnectionError
50    from Thuban.Model.table import DBFTable, MemoryTable, \
51         FIELDTYPE_DOUBLE, FIELDTYPE_INT, FIELDTYPE_STRING, \
52         table_to_dbf
53    from Thuban.Model.label import ALIGN_CENTER, ALIGN_TOP, ALIGN_BOTTOM, \
54         ALIGN_LEFT, ALIGN_RIGHT, ALIGN_BASELINE
55    
56    
57  def filenames_equal(name1, name2):  def filenames_equal(name1, name2):
# Line 80  class LoadSessionTest(support.FileLoadTe Line 89  class LoadSessionTest(support.FileLoadTe
89          self.session = None          self.session = None
90    
91    
92      dtd = "http://thuban.intevation.org/dtds/thuban-0.9-dev.dtd"      dtd = "http://thuban.intevation.org/dtds/thuban-1.0rc1.dtd"
93      thubanids = [((dtd, n), (None, "id")) for n in      thubanids = [((dtd, n), (None, "id")) for n in
94                   ["fileshapesource", "filetable", "jointable",                   ["fileshapesource", "filetable", "jointable",
95                    "derivedshapesource"]]                    "derivedshapesource"]]
# Line 90  class LoadSessionTest(support.FileLoadTe Line 99  class LoadSessionTest(support.FileLoadTe
99                       ("jointable", "right"),                       ("jointable", "right"),
100                       ("derivedshapesource", "table"),                       ("derivedshapesource", "table"),
101                       ("derivedshapesource", "shapesource")]]                       ("derivedshapesource", "shapesource")]]
102    
103        # The filenames in the tests should be understandable on all
104        # currently supported platforms so filenames is an empty list
105        filenames = []
106    
107      del n, m, dtd      del n, m, dtd
108    
109      def check_format(self):      def check_format(self):
# Line 100  class LoadSessionTest(support.FileLoadTe Line 114  class LoadSessionTest(support.FileLoadTe
114          filename = self.temp_file_name(self.id() + ".roundtrip.thuban")          filename = self.temp_file_name(self.id() + ".roundtrip.thuban")
115          save_session(self.session, filename)          save_session(self.session, filename)
116          el1 = sax_eventlist(filename = filename, ids = self.thubanids,          el1 = sax_eventlist(filename = filename, ids = self.thubanids,
117                              idrefs = self.thubanidrefs)                              idrefs = self.thubanidrefs,
118                                filenames = self.filenames)
119          el2 = sax_eventlist(filename = self.filename(), ids = self.thubanids,          el2 = sax_eventlist(filename = self.filename(), ids = self.thubanids,
120                              idrefs = self.thubanidrefs)                              idrefs = self.thubanidrefs,
121                                filenames = self.filenames)
122          if 0:          if 0:
123              for a, b in zip(el1, el2):              for a, b in zip(el1, el2):
124                  print a != b and "***************" or ""                  print a != b and "***************" or ""
# Line 165  class ClassificationTest(LoadSessionTest Line 181  class ClassificationTest(LoadSessionTest
181    
182  class TestSingleLayer(LoadSessionTest):  class TestSingleLayer(LoadSessionTest):
183    
184        # Note: The use of & and non-ascii characters is deliberate. We
185        # want to test whether the loading code handles that correctly.
186      file_contents = '''\      file_contents = '''\
187  <?xml version="1.0" encoding="UTF-8"?>  <?xml version="1.0" encoding="UTF-8"?>
188  <!DOCTYPE session SYSTEM "thuban-0.9.dtd">  <!DOCTYPE session SYSTEM "thuban-1.0.dtd">
189  <session xmlns="http://thuban.intevation.org/dtds/thuban-0.9-dev.dtd"  <session xmlns="http://thuban.intevation.org/dtds/thuban-1.0rc1.dtd"
190          title="single map&amp;layer">          title="Stra\xc3\x9fen &amp; Landmarken">
191      <fileshapesource filetype="shapefile" id="D1"      <fileshapesource filetype="shapefile" id="D1"
192          filename="../../Data/iceland/political.shp"/>          filename="../../Data/iceland/political.shp"/>
193      <map title="Test Map">      <map title="\xc3\x9cbersicht">
194          <projection name="Unknown">          <projection epsg="32627" name="WGS 84 / UTM zone 27N">
195              <parameter value="zone=26"/>              <parameter value="datum=WGS84"/>
196                <parameter value="ellps=WGS84"/>
197              <parameter value="proj=utm"/>              <parameter value="proj=utm"/>
198              <parameter value="ellps=clrk66"/>              <parameter value="units=m"/>
199                <parameter value="zone=27"/>
200          </projection>          </projection>
201          <layer shapestore="D1" visible="true"          <layer shapestore="D1" visible="true"
202                  stroke="#000000" title="My Layer" stroke_width="1"                  stroke="#000000" title="K\xc3\xbcste" stroke_width="1"
203                  fill="None"/>                  fill="None"/>
204      </map>      </map>
205  </session>  </session>
# Line 192  class TestSingleLayer(LoadSessionTest): Line 212  class TestSingleLayer(LoadSessionTest):
212          self.session = session          self.session = session
213    
214          # Check the title          # Check the title
215          eq(session.Title(), "single map&layer")          eq(session.Title(), "Stra\xdfen & Landmarken")
216    
217          # the session has one map.          # the session has one map.
218          maps = session.Maps()          maps = session.Maps()
# Line 200  class TestSingleLayer(LoadSessionTest): Line 220  class TestSingleLayer(LoadSessionTest):
220    
221          # Check the map's attributes          # Check the map's attributes
222          map = maps[0]          map = maps[0]
223          eq(map.Title(), "Test Map")          eq(map.Title(), "\xdcbersicht")
224            proj = map.GetProjection()
225            eq(proj.GetName(), "WGS 84 / UTM zone 27N")
226            eq(proj.EPSGCode(), "32627")
227            params = proj.GetAllParameters()
228            params.sort()
229            eq(params, ["datum=WGS84", "ellps=WGS84", "proj=utm", "units=m",
230                        "zone=27"])
231    
232          # the map has a single layer          # the map has a single layer
233          layers = map.Layers()          layers = map.Layers()
# Line 208  class TestSingleLayer(LoadSessionTest): Line 235  class TestSingleLayer(LoadSessionTest):
235    
236          # Check the layer attributes          # Check the layer attributes
237          layer = layers[0]          layer = layers[0]
238          eq(layer.Title(), "My Layer")          eq(layer.Title(), "K\xfcste")
239          self.failUnless(filenames_equal(layer.ShapeStore().FileName(),          self.failUnless(filenames_equal(layer.ShapeStore().FileName(),
240                                          os.path.join(self.temp_dir(),                                          os.path.join(self.temp_dir(),
241                                                       os.pardir, os.pardir,                                                       os.pardir, os.pardir,
# Line 223  class TestSingleLayer(LoadSessionTest): Line 250  class TestSingleLayer(LoadSessionTest):
250          self.session.Destroy()          self.session.Destroy()
251          self.session = None          self.session = None
252    
253        def test_leak(self):
254            """Test load_session for resource leaks
255    
256            The load_session function had a resource leak in that it created
257            cyclic references. The objects would have been eventually
258            collected by the garbage collector but too late. One symptom is
259            that when layers are removed so that the last normal reference
260            owned indirectly by the session to a shape store goes away, the
261            shape store is not actually removed from the session even though
262            the session only keeps weak references because there are still
263            references owned by the cyclic garbage.
264            """
265            session = load_session(self.filename())
266            self.session = session
267    
268            # sanity check
269            self.assertEquals(len(session.ShapeStores()), 1)
270    
271            # remove the map. The shapestore should go away too
272            session.RemoveMap(session.Maps()[0])
273            self.assertEquals(len(session.ShapeStores()), 0)
274    
275    
276    class TestNonAsciiColumnName(LoadSessionTest):
277    
278        file_contents = '''\
279    <?xml version="1.0" encoding="UTF-8"?>
280    <!DOCTYPE session SYSTEM "thuban-1.0.dtd">
281    <session xmlns="http://thuban.intevation.org/dtds/thuban-1.0rc1.dtd"
282            title="Non ASCII column name test">
283        <fileshapesource filetype="shapefile" id="D1"
284            filename="TestNonAsciiColumnName.shp"/>
285        <map title="map">
286            <projection name="Some Projection">
287                <parameter value="datum=WGS84"/>
288                <parameter value="ellps=WGS84"/>
289                <parameter value="proj=utm"/>
290                <parameter value="units=m"/>
291                <parameter value="zone=27"/>
292            </projection>
293            <layer shapestore="D1" visible="true"
294                    stroke="#000000" title="layer" stroke_width="1"
295                    fill="None">
296                <classification field="Fl\xc3\xa4che" field_type="double">
297                    <clnull label="">
298                        <cldata stroke="#000000" stroke_width="1" fill="None"/>
299                    </clnull>
300                </classification>
301            </layer>
302        </map>
303    </session>
304    '''
305    
306        def test(self):
307            """Load a session with a single map with a single layer"""
308    
309            # Create a shapefile and a dbffile with a non-ascii column name
310            dbffile = self.temp_file_name("TestNonAsciiColumnName.dbf")
311            shpfile = self.temp_file_name("TestNonAsciiColumnName.shp")
312            dbf = dbflib.create(dbffile)
313            dbf.add_field('Fl\xe4che', dbflib.FTDouble, 10, 5)
314            dbf.write_record(0, (0.0,))
315            dbf.close()
316            shp = shapelib.create(shpfile, shapelib.SHPT_POLYGON)
317            shp.write_object(-1, shapelib.SHPObject(shapelib.SHPT_POLYGON, 1,
318                                                    [[(0,0), (10, 10), (10, 0),
319                                                      (0, 0)]]))
320            shp.close()
321    
322            try:
323                session = load_session(self.filename())
324            except ValueError, v:
325                # Usually if the field name is not decoded properly the
326                # loading fails because the field type mentioned in the file
327                # is not None as returned from the layer for a non-existing
328                # column name so we check for that and report it as failure.
329                # Other exceptions are errors in the test case.
330                if str(v) == "xml field type differs from database!":
331                    self.fail("Cannot load file with non-ascii column names")
332                else:
333                    raise
334            self.session = session
335    
336            # In case Thuban could load the file anyway (i.e. no ValueError
337            # exception in load_session()), check explicitly whether the
338            # field name was decoded properly. The test will probably lead
339            # to a UnicodeError instead of a test failure so we check that
340            # too
341            layer = session.Maps()[0].Layers()[0]
342            try:
343                self.assertEquals(layer.GetClassificationColumn(), 'Fl\xe4che')
344            except UnicodeError:
345                # FIXME: Obviously this will have to change if Thuban ever
346                # supports unicode properly.
347                self.fail("Column name was not converted to a bytestring")
348    
349            # roundtrip check
350            self.check_format()
351    
352    
353  class TestLayerVisibility(LoadSessionTest):  class TestLayerVisibility(LoadSessionTest):
354    
355      file_contents = '''\      file_contents = '''\
356  <?xml version="1.0" encoding="UTF-8"?>  <?xml version="1.0" encoding="UTF-8"?>
357  <!DOCTYPE session SYSTEM "thuban-0.9.dtd">  <!DOCTYPE session SYSTEM "thuban-1.0.dtd">
358  <session xmlns="http://thuban.intevation.org/dtds/thuban-0.9-dev.dtd"  <session xmlns="http://thuban.intevation.org/dtds/thuban-1.0rc1.dtd"
359          title="single map&amp;layer">          title="single map&amp;layer">
360      <fileshapesource filetype="shapefile" id="D1"      <fileshapesource filetype="shapefile" id="D1"
361          filename="../../Data/iceland/political.shp"/>          filename="../../Data/iceland/political.shp"/>
# Line 266  class TestClassification(ClassificationT Line 392  class TestClassification(ClassificationT
392    
393      file_contents = '''\      file_contents = '''\
394  <?xml version="1.0" encoding="UTF-8"?>  <?xml version="1.0" encoding="UTF-8"?>
395  <!DOCTYPE session SYSTEM "thuban.dtd">  <!DOCTYPE session SYSTEM "thuban-1.0.dtd">
396  <session title="single map&amp;layer">  <session xmlns="http://thuban.intevation.org/dtds/thuban-1.0rc1.dtd"
397          <map title="Test Map">          title="single map&amp;layer">
398                  <projection>      <fileshapesource filetype="shapefile" id="D138389860"
399                          <parameter value="zone=26"/>          filename="../../Data/iceland/political.shp"/>
400                          <parameter value="proj=utm"/>      <fileshapesource filetype="shapefile" id="D138504492"
401                          <parameter value="ellps=clrk66"/>          filename="../../Data/iceland/political.shp"/>
402                  </projection>      <map title="Test Map">
403                  <layer title="My Layer" stroke_width="1" fill="None"          <projection name="">
404                      filename="../../Data/iceland/political.shp"              <parameter value="zone=26"/>
405                      stroke="#000000">              <parameter value="proj=utm"/>
406                <parameter value="ellps=clrk66"/>
407            </projection>
408            <layer shapestore="D138389860" visible="true" stroke="#000000"
409                    title="My Layer" stroke_width="1" fill="None">
410              <classification field="POPYREG" field_type="string">              <classification field="POPYREG" field_type="string">
411                  <clnull>                  <clnull label="">
412                      <cldata stroke="#000000" stroke_width="1" fill="None"/>                      <cldata stroke="#000000" stroke_width="1" fill="None"/>
413                  </clnull>                  </clnull>
414                  <clpoint value="1">                  <clpoint label="" value="1">
415                      <cldata stroke="#000000" stroke_width="2" fill="None"/>                      <cldata stroke="#000000" stroke_width="2" fill="None"/>
416                  </clpoint>                  </clpoint>
417                  <clpoint value="1">                  <clpoint label="" value="1">
418                      <cldata stroke="#000000" stroke_width="10" fill="None"/>                      <cldata stroke="#000000" stroke_width="10" fill="None"/>
419                  </clpoint>                  </clpoint>
420                  <clpoint value="\xc3\xa4\xc3\xb6\xc3\xbc"                  <clpoint label="\xc3\x9cml\xc3\xa4uts"
421                           label="\xc3\x9cml\xc3\xa4uts">                          value="\xc3\xa4\xc3\xb6\xc3\xbc">
422                      <cldata fill="None" stroke="#000000" stroke_width="1"/>                      <cldata stroke="#000000" stroke_width="1" fill="None"/>
423                  </clpoint>                  </clpoint>
424              </classification>              </classification>
425          </layer>          </layer>
426                  <layer title="My Layer 2" stroke_width="1" fill="None"          <layer shapestore="D138504492" visible="true" stroke="#000000"
427                      filename="../../Data/iceland/political.shp"                  title="My Layer 2" stroke_width="2" fill="None">
                     stroke="#000000">  
428              <classification field="AREA" field_type="double">              <classification field="AREA" field_type="double">
429                  <clnull>                  <clnull label="">
430                      <cldata stroke="#000000" stroke_width="2" fill="None"/>                      <cldata stroke="#000000" stroke_width="2" fill="None"/>
431                  </clnull>                  </clnull>
432                  <clrange min="0" max="1">                  <clrange label="" range="[0;1[">
433                      <cldata stroke="#111111" stroke_width="1" fill="None"/>                      <cldata stroke="#111111" stroke_width="1" fill="None"/>
434                  </clrange>                  </clrange>
435                  <clpoint value=".5">                  <clpoint label="" value="0.5">
436                      <cldata stroke="#000000" stroke_width="1" fill="#111111"/>                      <cldata stroke="#000000" stroke_width="1" fill="#111111"/>
437                  </clpoint>                  </clpoint>
438                  <clrange min="-1" max="0">                  <clrange label="" range="[-1;0[">
439                      <cldata stroke="#000000" stroke_width="1" fill="None"/>                      <cldata stroke="#000000" stroke_width="1" fill="None"/>
440                  </clrange>                  </clrange>
441                  <clpoint value="-.5">                  <clpoint label="" value="-0.5">
442                      <cldata stroke="#000000" stroke_width="1" fill="None"/>                      <cldata stroke="#000000" stroke_width="1" fill="None"/>
443                  </clpoint>                  </clpoint>
444              </classification>              </classification>
445          </layer>          </layer>
446          </map>      </map>
447  </session>  </session>
448  '''  '''
449    
# Line 348  class TestClassification(ClassificationT Line 477  class TestClassification(ClassificationT
477    
478          self.TestLayers(map.Layers(), expected)          self.TestLayers(map.Layers(), expected)
479    
480            self.check_format()
481    
482    
483  class TestLabels(ClassificationTest):  class TestLabels(ClassificationTest):
484    
485      file_contents = '''\      file_contents = '''\
486  <?xml version="1.0" encoding="UTF-8"?>  <?xml version="1.0" encoding="UTF-8"?>
487  <!DOCTYPE session SYSTEM "thuban-0.9.dtd">  <!DOCTYPE session SYSTEM "thuban-1.0.dtd">
488  <session xmlns="http://thuban.intevation.org/dtds/thuban-0.9-dev.dtd"  <session xmlns="http://thuban.intevation.org/dtds/thuban-1.0rc1.dtd"
489          title="single map&amp;layer">          title="single map&amp;layer">
490      <fileshapesource filetype="shapefile" id="D1"      <fileshapesource filetype="shapefile" id="D1"
491          filename="../../Data/iceland/political.shp"/>          filename="../../Data/iceland/political.shp"/>
# Line 401  class TestLayerProjection(LoadSessionTes Line 532  class TestLayerProjection(LoadSessionTes
532    
533      file_contents = '''\      file_contents = '''\
534  <?xml version="1.0" encoding="UTF-8"?>  <?xml version="1.0" encoding="UTF-8"?>
535  <!DOCTYPE session SYSTEM "thuban-0.9.dtd">  <!DOCTYPE session SYSTEM "thuban-1.0.dtd">
536  <session xmlns="http://thuban.intevation.org/dtds/thuban-0.9-dev.dtd"  <session xmlns="http://thuban.intevation.org/dtds/thuban-1.0rc1.dtd"
537          title="single map&amp;layer">          title="single map&amp;layer">
538      <fileshapesource filetype="shapefile" id="D2"      <fileshapesource filetype="shapefile" id="D2"
539          filename="../../Data/iceland/roads-line.shp"/>          filename="../../Data/iceland/roads-line.shp"/>
# Line 434  class TestLayerProjection(LoadSessionTes Line 565  class TestLayerProjection(LoadSessionTes
565                  title="My Layer" stroke_width="1" fill="None">                  title="My Layer" stroke_width="1" fill="None">
566              <projection name="Unknown">              <projection name="Unknown">
567                  <parameter value="proj=lcc"/>                  <parameter value="proj=lcc"/>
568                    <parameter value="lat_1=10"/>
569                    <parameter value="lat_2=20"/>
570                  <parameter value="ellps=clrk66"/>                  <parameter value="ellps=clrk66"/>
571              </projection>              </projection>
572          </layer>          </layer>
# Line 466  class TestLayerProjection(LoadSessionTes Line 599  class TestLayerProjection(LoadSessionTes
599          neq(proj, None)          neq(proj, None)
600          eq(proj.GetName(), "Unknown")          eq(proj.GetName(), "Unknown")
601          eq(proj.GetParameter("proj"), "lcc")          eq(proj.GetParameter("proj"), "lcc")
602            eq(proj.GetParameter("lat_1"), "10")
603            eq(proj.GetParameter("lat_2"), "20")
604          eq(proj.GetParameter("ellps"), "clrk66")          eq(proj.GetParameter("ellps"), "clrk66")
605    
606          self.check_format()          self.check_format()
# Line 475  class TestRasterLayer(LoadSessionTest): Line 610  class TestRasterLayer(LoadSessionTest):
610    
611      file_contents = '''\      file_contents = '''\
612  <?xml version="1.0" encoding="UTF-8"?>  <?xml version="1.0" encoding="UTF-8"?>
613  <!DOCTYPE session SYSTEM "thuban-0.9.dtd">  <!DOCTYPE session SYSTEM "thuban-1.0.dtd">
614  <session xmlns="http://thuban.intevation.org/dtds/thuban-0.9-dev.dtd"  <session xmlns="http://thuban.intevation.org/dtds/thuban-1.0rc1.dtd"
615          title="single map&amp;layer">          title="single map&amp;layer">
616      <map title="Test Map">      <map title="Test Map">
617          <rasterlayer visible="false" filename="../../Data/iceland/island.tif"          <rasterlayer visible="false" filename="../../Data/iceland/island.tif"
# Line 509  class TestRasterLayer(LoadSessionTest): Line 644  class TestRasterLayer(LoadSessionTest):
644  class TestJoinedTable(LoadSessionTest):  class TestJoinedTable(LoadSessionTest):
645    
646      file_contents = '''<?xml version="1.0" encoding="UTF-8"?>      file_contents = '''<?xml version="1.0" encoding="UTF-8"?>
647  <!DOCTYPE session SYSTEM "thuban-0.9.dtd">  <!DOCTYPE session SYSTEM "thuban-1.0.dtd">
648  <session xmlns="http://thuban.intevation.org/dtds/thuban-0.9-dev.dtd" title="A Joined Table session">  <session xmlns="http://thuban.intevation.org/dtds/thuban-1.0rc1.dtd" title="A Joined Table session">
649      <fileshapesource filetype="shapefile" id="D137227612"      <fileshapesource filetype="shapefile" id="D137227612"
650          filename="../../Data/iceland/roads-line.shp"/>          filename="../../Data/iceland/roads-line.shp"/>
651      <filetable filetype="DBF" filename="load_joinedtable.dbf" id="D136171140"      <filetable filetype="DBF" filename="load_joinedtable.dbf" id="D136171140"
# Line 554  class TestJoinedTable(LoadSessionTest): Line 689  class TestJoinedTable(LoadSessionTest):
689          self.check_format()          self.check_format()
690    
691    
692    class TestLabelLayer(LoadSessionTest):
693    
694        # Note that the labels deliberately contain non-ascii characters to
695        # test whether they're supported correctly.
696    
697        file_contents = '''<?xml version="1.0" encoding="UTF-8"?>
698    <!DOCTYPE session SYSTEM "thuban-1.0.dtd">
699    <session xmlns="http://thuban.intevation.org/dtds/thuban-1.0rc1.dtd" title="Thuban sample session">
700        <fileshapesource filetype="shapefile" id="D145265052"
701            filename="../../Data/iceland/political.shp"/>
702        <fileshapesource filetype="shapefile" id="D145412868"
703            filename="../../Data/iceland/cultural_landmark-point.shp"/>
704        <map title="Iceland map">
705            <projection name="Unknown">
706                <parameter value="zone=26"/>
707                <parameter value="proj=utm"/>
708                <parameter value="ellps=clrk66"/>
709            </projection>
710            <layer shapestore="D145265052" visible="true" stroke="#000000"
711                    title="political" stroke_width="1" fill="#c0c0c0">
712                <projection name="Geographic">
713                    <parameter value="proj=latlong"/>
714                    <parameter value="to_meter=0.017453"/>
715                    <parameter value="ellps=clrk66"/>
716                </projection>
717            </layer>
718            <layer shapestore="D145412868" visible="true" stroke="#000000"
719                    title="landmarks" stroke_width="1" fill="#ffff00">
720                <projection name="Geographic">
721                    <parameter value="proj=latlong"/>
722                    <parameter value="to_meter=0.017453"/>
723                    <parameter value="ellps=clrk66"/>
724                </projection>
725            </layer>
726            <labellayer>
727                <label x="-21.5" y="64.25" text="RUINS"
728                    halign="left" valign="center"/>
729                <label x="-15.125" y="64.75" text="H\xc3\xbctte"
730                    halign="right" valign="top"/>
731            </labellayer>
732        </map>
733    </session>
734    '''
735    
736        def test(self):
737            """Test loading a session with a label layer"""
738            session = load_session(self.filename())
739            self.session = session
740    
741            label_layer = self.session.Maps()[0].LabelLayer()
742            expected_labels = [(-21.5, 64.25, "RUINS", ALIGN_LEFT, ALIGN_CENTER),
743                               (-15.125, 64.75, "H\xfctte", ALIGN_RIGHT, ALIGN_TOP),
744                               ]
745            for label, values in zip(label_layer.Labels(), expected_labels):
746                self.assertEquals((label.x, label.y, label.text, label.halign,
747                                   label.valign),
748                                  values)
749            self.check_format()
750    
751    
752    class TestPostGISLayer(LoadSessionTest):
753    
754        file_contents = '''<?xml version="1.0" encoding="UTF-8"?>
755    <!DOCTYPE session SYSTEM "thuban-1.0.dtd">
756    <session xmlns="http://thuban.intevation.org/dtds/thuban-1.0rc1.dtd"
757            title="unnamed session">
758        <dbconnection port="%(port)s" host="%(host)s" user="%(user)s"
759            dbtype="postgis" id="D142684948" dbname="%(dbname)s"/>
760        <dbshapesource tablename="landmarks" id="D143149420" dbconn="D142684948"/>
761        <map title="unnamed map">
762            <layer shapestore="D143149420" visible="true" stroke="#000000"
763                    title="landmarks" stroke_width="1" fill="None"/>
764        </map>
765    </session>
766    '''
767    
768        def setUp(self):
769            """Extend the inherited method to start the postgis server
770    
771            Furthermore, patch the file contents with the real postgis db
772            information
773            """
774            postgissupport.skip_if_no_postgis()
775            self.server = postgissupport.get_test_server()
776            self.postgisdb = self.server.get_default_static_data_db()
777    
778            self.file_contents = self.__class__.file_contents % {
779                "dbname": self.postgisdb.dbname,
780                "user": self.server.user_name,
781                "port": self.server.port,
782                "host": self.server.host}
783            LoadSessionTest.setUp(self)
784    
785        def test(self):
786            """Test loading a session containing a postgis shapestore"""
787            session = load_session(self.filename())
788            self.session = session
789            connections = session.DBConnections()
790            self.assertEquals(len(connections), 1)
791            conn = connections[0]
792            for attr, value in [("host", self.server.host),
793                                ("port", str(self.server.port)),
794                                ("user", self.server.user_name),
795                                ("dbname", self.postgisdb.dbname)]:
796                self.assertEquals(getattr(conn, attr), value)
797            layer = session.Maps()[0].Layers()[0]
798            self.failUnless(layer.ShapeStore().DBConnection() is conn)
799    
800    
801    class TestPostGISLayerPassword(LoadSessionTest):
802    
803        file_contents = '''<?xml version="1.0" encoding="UTF-8"?>
804    <!DOCTYPE session SYSTEM "thuban-1.0.dtd">
805    <session xmlns="http://thuban.intevation.org/dtds/thuban-1.0rc1.dtd"
806            title="unnamed session">
807        <dbconnection port="%(port)s" host="%(host)s" user="%(user)s"
808            dbtype="postgis" id="D142684948" dbname="%(dbname)s"/>
809        <dbshapesource tablename="landmarks" id="D143149420" dbconn="D142684948"/>
810        <map title="unnamed map">
811            <layer shapestore="D143149420" visible="true" stroke="#000000"
812                    title="landmarks" stroke_width="1" fill="None"/>
813        </map>
814    </session>
815    '''
816    
817        def setUp(self):
818            """Extend the inherited method to start the postgis server
819    
820            Furthermore, patch the file contents with the real postgis db
821            information
822            """
823            postgissupport.skip_if_no_postgis()
824            self.server = postgissupport.get_test_server()
825            self.postgisdb = self.server.get_default_static_data_db()
826    
827            self.file_contents = self.__class__.file_contents % {
828                "dbname": self.postgisdb.dbname,
829                "user": self.server.user_name,
830                "port": self.server.port,
831                "host": self.server.host}
832            LoadSessionTest.setUp(self)
833    
834            self.db_connection_callback_called = False
835            self.server.require_authentication(True)
836    
837        def tearDown(self):
838            """Extend the inherited method to switch off postgresql authentication
839            """
840            self.server.require_authentication(False)
841            LoadSessionTest.tearDown(self)
842    
843        def db_connection_callback(self, params, message):
844            """Implementation of Thuban.Model.hooks.query_db_connection_parameters
845            """
846            self.assertEquals(params,
847                              {"dbname": self.postgisdb.dbname,
848                               "user": self.server.user_name,
849                               "port": str(self.server.port),
850                               "host": self.server.host})
851            self.db_connection_callback_called = True
852            params = params.copy()
853            params["password"] = self.server.user_password
854            return params
855    
856        def test_with_callback(self):
857            """Test loading a session with postgis, authentication and a callback
858            """
859            session = load_session(self.filename(),
860                          db_connection_callback = self.db_connection_callback)
861            self.session = session
862            connections = session.DBConnections()
863            self.assertEquals(len(connections), 1)
864            conn = connections[0]
865            for attr, value in [("host", self.server.host),
866                                ("port", str(self.server.port)),
867                                ("user", self.server.user_name),
868                                ("dbname", self.postgisdb.dbname)]:
869                self.assertEquals(getattr(conn, attr), value)
870            layer = session.Maps()[0].Layers()[0]
871            self.failUnless(layer.ShapeStore().DBConnection() is conn)
872            self.failUnless(self.db_connection_callback_called)
873    
874        def test_without_callback(self):
875            """Test loading a session with postgis, authentication and no callback
876            """
877            # A password is required and there's no callback, so we should
878            # get a ConnectionError
879            self.assertRaises(ConnectionError, load_session, self.filename())
880    
881        def test_cancel(self):
882            """Test loading a session with postgis and cancelling authentication
883            """
884            def cancel(*args):
885                self.db_connection_callback_called = True
886                return None
887    
888            # If the user cancels, i.e. if the callbakc returns None, a
889            # LoadCancelled exception is raised.
890            self.assertRaises(LoadCancelled,
891                              load_session, self.filename(), cancel)
892            self.failUnless(self.db_connection_callback_called)
893    
894    
895  class TestLoadError(LoadSessionTest):  class TestLoadError(LoadSessionTest):
896    
897      file_contents = '''\      file_contents = '''\
898  <?xml version="1.0" encoding="UTF-8"?>  <?xml version="1.0" encoding="UTF-8"?>
899  <!DOCTYPE session SYSTEM "thuban-0.9.dtd">  <!DOCTYPE session SYSTEM "thuban-1.0.dtd">
900  <session xmlns="http://thuban.intevation.org/dtds/thuban-0.9-dev.dtd"  <session xmlns="http://thuban.intevation.org/dtds/thuban-1.0rc1.dtd"
901          title="single map&amp;layer">          title="single map&amp;layer">
902      <fileshapesource id="D1" filename="../../Data/iceland/political.shp"/>      <fileshapesource id="D1" filename="../../Data/iceland/political.shp"/>
903      <map title="Test Map">      <map title="Test Map">
# Line 582  class TestLoadError(LoadSessionTest): Line 920  class TestLoadError(LoadSessionTest):
920          try:          try:
921              self.session = load_session(self.filename())              self.session = load_session(self.filename())
922          except LoadError, value:          except LoadError, value:
923              pass              # Check the actual messge in value to make sure the
924                # LoadError really was about the missing attribute
925                self.assertEquals(str(value),
926                  "Element "
927                  "(u'http://thuban.intevation.org/dtds/thuban-1.0rc1.dtd',"
928                  " u'fileshapesource') requires an attribute 'filetype'")
929          else:          else:
930              self.fail("Missing filetype attribute doesn't raise LoadError")              self.fail("Missing filetype attribute doesn't raise LoadError")
931    
932  if __name__ == "__main__":  if __name__ == "__main__":
933      unittest.main()      support.run_tests()
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