/[thuban]/branches/WIP-pyshapelib-bramz/test/test_layer.py
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revision 1262 by jonathan, Fri Jun 20 14:15:30 2003 UTC revision 2688 by frank, Fri Jun 30 12:27:20 2006 UTC
# Line 1  Line 1 
1  # Copyright (c) 2002, 2003 by Intevation GmbH  # Copyright (c) 2002, 2003, 2004, 2005 by Intevation GmbH
2  # Authors:  # Authors:
3  # Bernhard Herzog <[email protected]>  # Bernhard Herzog <[email protected]>
4  #  #
# Line 16  __version__ = "$Revision$" Line 16  __version__ = "$Revision$"
16  import os  import os
17  import unittest  import unittest
18    
19    import mockgeo
20  import support  import support
21  support.initthuban()  support.initthuban()
22    
# Line 23  import shapelib Line 24  import shapelib
24  import dbflib  import dbflib
25    
26  from Thuban.Model.session import Session  from Thuban.Model.session import Session
27  from Thuban.Model.layer import BaseLayer, Layer, RasterLayer, \  from Thuban.Model.layer import BaseLayer, Layer, RasterLayer
28       SHAPETYPE_POLYGON, SHAPETYPE_ARC, SHAPETYPE_POINT  from Thuban.Model.data import SHAPETYPE_POLYGON, SHAPETYPE_ARC, SHAPETYPE_POINT
29  from Thuban.Model.messages import LAYER_LEGEND_CHANGED, \  from Thuban.Model.messages import LAYER_LEGEND_CHANGED, \
30       LAYER_VISIBILITY_CHANGED, LAYER_SHAPESTORE_REPLACED, LAYER_CHANGED       LAYER_VISIBILITY_CHANGED, LAYER_SHAPESTORE_REPLACED, LAYER_CHANGED
 from Thuban.Model.color import Color  
31  from Thuban.Model.table import FIELDTYPE_DOUBLE, FIELDTYPE_STRING, MemoryTable  from Thuban.Model.table import FIELDTYPE_DOUBLE, FIELDTYPE_STRING, MemoryTable
32  from Thuban.Model.proj import Projection  from Thuban.Model.proj import Projection
33  from Thuban.Model.data import DerivedShapeStore  from Thuban.Model.data import DerivedShapeStore
34  from Thuban.Model.classification import Classification, ClassGroupSingleton  from Thuban.Model.classification import Classification, ClassGroupSingleton, \
35         ClassGroupRange, ClassGroupPattern
36    from Thuban.Model.color import Color
37    
38  import Thuban.Model.resource  import Thuban.Model.resource
39    
# Line 40  class TestLayer(unittest.TestCase, suppo Line 42  class TestLayer(unittest.TestCase, suppo
42    
43      """Test cases for different layer (shape) types"""      """Test cases for different layer (shape) types"""
44    
     def assertFloatTuplesEqual(self, test, value):  
         """Assert equality of two lists of tuples of float"""  
         for i in range(len(test)):  
             self.assertFloatSeqEqual(test[i], value[i])  
   
45      def setUp(self):      def setUp(self):
46          """Create a session self.session and initialize self.layer to None"""          """Create a session self.session and initialize self.layer to None"""
47          self.session = Session("Test session for %s" % self.__class__)          self.session = Session("Test session for %s" % self.__class__)
# Line 52  class TestLayer(unittest.TestCase, suppo Line 49  class TestLayer(unittest.TestCase, suppo
49    
50      def tearDown(self):      def tearDown(self):
51          """Call the layer's Destroy method and set session and layer to None"""          """Call the layer's Destroy method and set session and layer to None"""
52            self.session.Destroy()
53          self.session = None          self.session = None
54          if self.layer is not None:          if self.layer is not None:
55              self.layer.Destroy()              self.layer.Destroy()
# Line 77  class TestLayer(unittest.TestCase, suppo Line 75  class TestLayer(unittest.TestCase, suppo
75          self.failUnless(layer.Visible())          self.failUnless(layer.Visible())
76    
77          self.failIf(layer.HasClassification())          self.failIf(layer.HasClassification())
78            self.failIf(layer.HasShapes())
79    
80          self.assertEquals(layer.GetProjection(), None)          self.assertEquals(layer.GetProjection(), None)
81    
82          # set/get projection          # set/get projection
83          proj = Projection(["proj=utm", "zone=26"])          proj = Projection(["proj=utm", "zone=26", "ellps=clrk66"])
84    
85          layer.SetProjection(proj)          layer.SetProjection(proj)
86          self.failUnless(layer.GetProjection() is proj)          self.failUnless(layer.GetProjection() is proj)
# Line 94  class TestLayer(unittest.TestCase, suppo Line 94  class TestLayer(unittest.TestCase, suppo
94          """Test Layer with arc shapes"""          """Test Layer with arc shapes"""
95          layer = self.layer = Layer("Test Layer",          layer = self.layer = Layer("Test Layer",
96                                     self.open_shapefile("roads-line.shp"))                                     self.open_shapefile("roads-line.shp"))
97            self.failUnless(layer.HasClassification())
98            self.failUnless(layer.HasShapes())
99          self.assertEquals(layer.ShapeType(), SHAPETYPE_ARC)          self.assertEquals(layer.ShapeType(), SHAPETYPE_ARC)
100          self.assertEquals(layer.NumShapes(), 839)          self.assertEquals(layer.NumShapes(), 839)
101          shape = layer.Shape(32)          shape = layer.Shape(32)
102          self.assertFloatTuplesEqual(shape.Points(),          self.assertPointListEquals(shape.Points(),
103                                      [(-15.082174301147461, 66.27738189697265),                                     [[(-15.082174301147461, 66.27738189697265),
104                                       (-15.026350021362305, 66.27339172363281)])                                       (-15.026350021362305, 66.27339172363281)]])
105          self.assertFloatSeqEqual(layer.BoundingBox(),          self.assertFloatSeqEqual(layer.BoundingBox(),
106                                   [-24.450359344482422, 63.426830291748047,                                   [-24.450359344482422, 63.426830291748047,
107                                    -13.55668830871582, 66.520111083984375])                                    -13.55668830871582, 66.520111083984375])
108          self.assertEquals(layer.ShapesInRegion((-24.0, 64.0, -23.75, 64.25)),          shapes = layer.ShapesInRegion((-24.0, 64.0, -23.75, 64.25))
109            self.assertEquals([s.ShapeID() for s in shapes],
110                            [613, 726, 838])                            [613, 726, 838])
111    
112          self.assertFloatSeqEqual(layer.ShapesBoundingBox([32]),          self.assertFloatSeqEqual(layer.ShapesBoundingBox([32]),
# Line 111  class TestLayer(unittest.TestCase, suppo Line 114  class TestLayer(unittest.TestCase, suppo
114                             -15.026350021362305, 66.27738189697265])                             -15.026350021362305, 66.27738189697265])
115    
116          shape = layer.Shape(33)          shape = layer.Shape(33)
117          self.assertFloatTuplesEqual(shape.Points(),          self.assertPointListEquals(shape.Points(),
118                                      [(-22.248506546020508, 66.30645751953125),                                     [[(-22.24850654602050, 66.30645751953125),
119                                       (-22.232730865478516, 66.294075012207031),                                       (-22.23273086547851, 66.29407501220703),
120                                       (-22.23158073425293,  66.287689208984375),                                       (-22.23158073425293,  66.2876892089843),
121                                       (-22.246318817138672, 66.270065307617188)])                                       (-22.24631881713867, 66.27006530761718)]])
122    
123          self.assertFloatSeqEqual(layer.ShapesBoundingBox([32, 33]),          self.assertFloatSeqEqual(layer.ShapesBoundingBox([32, 33]),
124                                   [-22.248506546020508, 66.270065307617188,                                   [-22.248506546020508, 66.270065307617188,
# Line 128  class TestLayer(unittest.TestCase, suppo Line 131  class TestLayer(unittest.TestCase, suppo
131          """Test Layer with polygon shapes"""          """Test Layer with polygon shapes"""
132          layer = self.layer = Layer("Test Layer",          layer = self.layer = Layer("Test Layer",
133                                     self.open_shapefile("political.shp"))                                     self.open_shapefile("political.shp"))
134            self.failUnless(layer.HasClassification())
135            self.failUnless(layer.HasShapes())
136          self.assertEquals(layer.ShapeType(), SHAPETYPE_POLYGON)          self.assertEquals(layer.ShapeType(), SHAPETYPE_POLYGON)
137          self.assertEquals(layer.NumShapes(), 156)          self.assertEquals(layer.NumShapes(), 156)
138          shape = layer.Shape(4)          shape = layer.Shape(4)
139          self.assertFloatTuplesEqual(shape.Points(),          self.assertPointListEquals(shape.Points(),
140                                      [(-22.406391143798828, 64.714111328125),                                     [[(-22.40639114379882, 64.714111328125),
141                                       (-22.41621208190918, 64.71600341796875),                                       (-22.41621208190918, 64.7160034179687),
142                                       (-22.406051635742188, 64.719200134277344),                                       (-22.40605163574218, 64.719200134277),
143                                       (-22.406391143798828, 64.714111328125)])                                       (-22.40639114379882, 64.714111328125)]])
144          self.assertFloatSeqEqual(layer.BoundingBox(),          self.assertFloatSeqEqual(layer.BoundingBox(),
145                                   [-24.546524047851562, 63.286754608154297,                                   [-24.546524047851562, 63.286754608154297,
146                                    -13.495815277099609, 66.563774108886719])                                    -13.495815277099609, 66.563774108886719])
147          self.assertEquals(layer.ShapesInRegion((-24.0, 64.0, -23.9, 64.1)),          shapes = layer.ShapesInRegion((-24.0, 64.0, -23.9, 64.1))
148            self.assertEquals([s.ShapeID() for s in shapes],
149                            [91, 92, 144, 146, 148, 150, 152, 153])                            [91, 92, 144, 146, 148, 150, 152, 153])
150    
151      def test_point_layer(self):      def test_point_layer(self):
152          """Test Layer with point shapes"""          """Test Layer with point shapes"""
153          layer = self.layer = Layer("Test Layer",          layer = self.layer = Layer("Test Layer",
154                             self.open_shapefile("cultural_landmark-point.shp"))                             self.open_shapefile("cultural_landmark-point.shp"))
155            self.failUnless(layer.HasClassification())
156            self.failUnless(layer.HasShapes())
157          self.assertEquals(layer.ShapeType(), SHAPETYPE_POINT)          self.assertEquals(layer.ShapeType(), SHAPETYPE_POINT)
158          self.assertEquals(layer.NumShapes(), 34)          self.assertEquals(layer.NumShapes(), 34)
159          shape = layer.Shape(0)          shape = layer.Shape(0)
160          self.assertFloatTuplesEqual(shape.Points(),          self.assertPointListEquals(shape.Points(),
161                                      [(-22.711074829101562, 66.36572265625)])                                     [[(-22.711074829101562, 66.36572265625)]])
162          self.assertFloatSeqEqual(layer.BoundingBox(),          self.assertFloatSeqEqual(layer.BoundingBox(),
163                                   [-23.806047439575195, 63.405960083007812,                                   [-23.806047439575195, 63.405960083007812,
164                                    -15.12291431427002, 66.36572265625])                                    -15.12291431427002, 66.36572265625])
165          self.assertEquals(layer.ShapesInRegion((-24.0, 64.0, -23.80, 64.1)),          shapes = layer.ShapesInRegion((-24.0, 64.0, -23.80, 64.1))
166            self.assertEquals([s.ShapeID() for s in shapes],
167                            [0, 1, 2, 3, 4, 5, 27, 28, 29, 30, 31])                            [0, 1, 2, 3, 4, 5, 27, 28, 29, 30, 31])
168    
169        def test_arc_layer_with_projection(self):
170            """Test Layer with point shapes and a projection"""
171            # We use mock data here so that we have precise control over the
172            # values
173            table = MemoryTable([("FOO", FIELDTYPE_STRING)], [("bla",)])
174            store = mockgeo.SimpleShapeStore(SHAPETYPE_ARC,
175                                  [[[(9884828.7209840547, 5607720.9774499247),
176                                     (11298336.04640449, 9287823.2044059951)]]],
177                                             table)
178            layer = self.layer = Layer("Test Layer", store)
179    
180            proj = Projection(["proj=lcc", "lon_0=0", "lat_1=20n", "lat_2=60n",
181                               "ellps=clrk66"])
182            layer.SetProjection(proj)
183    
184            self.assertFloatSeqEqual(layer.BoundingBox(),
185                                     (9884828.7209840547, 5607720.9774499247,
186                                      11298336.04640449, 9287823.2044059951))
187            self.assertFloatSeqEqual(layer.LatLongBoundingBox(),
188                                     (90.0, -8.90043373, 120, 11.1616263))
189            shapes = layer.ShapesInRegion((100, -10, 150, +10))
190            self.assertEquals([s.ShapeID() for s in shapes], [0])
191            self.assertFloatSeqEqual(layer.ShapesBoundingBox([0]),
192                                     (90.0, -8.90043373, 120, 11.1616263))
193    
194            # Test a very large bounding box in the query.  Naive inverse
195            # projection will create infs instead of proper coordinate
196            # values and a different result (an empty list instead of [0])
197            shapes = layer.ShapesInRegion((-180, -170, 200, +120))
198            self.assertEquals([s.ShapeID() for s in shapes],[0])
199    
200      def test_empty_layer(self):      def test_empty_layer(self):
201          """Test Layer with empty shape file"""          """Test Layer with empty shape file"""
202          # create an empty shape file          # create an empty shape file
# Line 168  class TestLayer(unittest.TestCase, suppo Line 208  class TestLayer(unittest.TestCase, suppo
208          dbffilename = self.temp_file_name("layer_empty.dbf")          dbffilename = self.temp_file_name("layer_empty.dbf")
209          dbf = dbflib.create(dbffilename)          dbf = dbflib.create(dbffilename)
210          dbf.add_field("NAME", dbflib.FTString, 20, 0)          dbf.add_field("NAME", dbflib.FTString, 20, 0)
211            dbf.close()
212    
213          # Now try to open it.          # Now try to open it.
214          layer = self.layer = Layer("Empty Layer",          layer = self.layer = Layer("Empty Layer",
# Line 185  class TestLayer(unittest.TestCase, suppo Line 226  class TestLayer(unittest.TestCase, suppo
226    
227      def test_raster_layer(self):      def test_raster_layer(self):
228          if not Thuban.Model.resource.has_gdal_support():          if not Thuban.Model.resource.has_gdal_support():
229              return              raise support.SkipTest("No gdal support")
230    
231          filename = self.build_path("island.tif")          filename = self.build_path("island.tif")
232          layer = RasterLayer("Test RasterLayer", filename)          layer = RasterLayer("Test RasterLayer", filename)
233          self.assertEquals(layer.GetImageFilename(), filename)          self.failIf(layer.HasClassification())
234            self.failIf(layer.HasShapes())
235            self.assertEquals(layer.MaskType(), layer.MASK_BIT)
236            self.assertEquals(layer.GetImageFilename(), os.path.abspath(filename))
237          self.assertFloatSeqEqual(layer.BoundingBox(),          self.assertFloatSeqEqual(layer.BoundingBox(),
238                                   [-24.5500000, 63.2833330,                                   [-24.5500000, 63.2833330,
239                                    -13.4916670, 66.5666670])                                    -13.4916670, 66.5666670])
# Line 197  class TestLayer(unittest.TestCase, suppo Line 241  class TestLayer(unittest.TestCase, suppo
241                                   [-24.5500000, 63.2833330,                                   [-24.5500000, 63.2833330,
242                                    -13.4916670, 66.5666670])                                    -13.4916670, 66.5666670])
243    
244            info = layer.ImageInfo()
245            self.failIf(info is None)
246            self.failUnless(info.has_key("nBands"))
247            self.failUnless(info.has_key("Size"))
248            self.failUnless(info.has_key("Driver"))
249            self.failUnless(info.has_key("BandData"))
250    
251            self.assertEquals(info["nBands"], 1)
252            self.assertEquals(info["Size"], (5002, 394))
253            self.assertEquals(info["Driver"], "GTiff")
254            self.assertEquals(info["BandData"], [(0.0, 140.0)])
255    
256      def test_derived_store(self):      def test_derived_store(self):
257          """Test layer with derived store"""          """Test layer with derived store"""
258          layer = self.layer = Layer("Test Layer",          layer = self.layer = Layer("Test Layer",
# Line 207  class TestLayer(unittest.TestCase, suppo Line 263  class TestLayer(unittest.TestCase, suppo
263              layer.SetShapeStore(derived)              layer.SetShapeStore(derived)
264              self.assert_(layer.ShapeStore() is derived)              self.assert_(layer.ShapeStore() is derived)
265    
266              # check that an exception is raised when the number              self.assertEquals(layer.ShapeType(), SHAPETYPE_ARC)
267              # of shapes differ from the number of rows in a table.              self.assertEquals(layer.NumShapes(), 839)
268              layer2 = Layer("Test Layer",              shape = layer.Shape(32)
269                             self.open_shapefile("political.shp"))              self.assertPointListEquals(shape.Points(),
270              store2 = layer2.ShapeStore()                                         [[(-15.082174301147, 66.277381896972),
271              self.assertRaises(ValueError,                                           (-15.026350021362, 66.273391723632)]])
272                                DerivedShapeStore, store2, store.Table())              self.assertFloatSeqEqual(layer.BoundingBox(),
273                                         [-24.450359344482422, 63.426830291748047,
274                                          -13.55668830871582, 66.520111083984375])
275                shapes = layer.ShapesInRegion((-24.0, 64.0, -23.75, 64.25))
276                self.assertEquals([s.ShapeID() for s in shapes],
277                                  [613, 726, 838])
278    
279                self.assertFloatSeqEqual(layer.ShapesBoundingBox([32]),
280                                         [-15.082174301147461, 66.27339172363281,
281                                          -15.026350021362305, 66.27738189697265])
282    
283          finally:          finally:
284              store = derived = None              store = derived = None
             layer2.Destroy()  
             store2 = None  
285    
286    
287  class SetShapeStoreTests(unittest.TestCase, support.SubscriberMixin):  class SetShapeStoreTests(unittest.TestCase, support.SubscriberMixin):
# Line 231  class SetShapeStoreTests(unittest.TestCa Line 294  class SetShapeStoreTests(unittest.TestCa
294                                            "cultural_landmark-point.dbf")                                            "cultural_landmark-point.dbf")
295          self.store = self.session.OpenShapefile(self.shapefilename)          self.store = self.session.OpenShapefile(self.shapefilename)
296          self.layer = Layer("test layer", self.store)          self.layer = Layer("test layer", self.store)
297          self.classification = Classification(field = "CLPTLABEL")          self.classification = Classification()
298          self.classification.AppendGroup(ClassGroupSingleton("FARM"))          self.classification.AppendGroup(ClassGroupSingleton("FARM"))
299            self.layer.SetClassificationColumn("CLPTLABEL")
300          self.layer.SetClassification(self.classification)          self.layer.SetClassification(self.classification)
301          self.layer.UnsetModified()          self.layer.UnsetModified()
302          self.layer.Subscribe(LAYER_SHAPESTORE_REPLACED,          self.layer.Subscribe(LAYER_SHAPESTORE_REPLACED,
# Line 254  class SetShapeStoreTests(unittest.TestCa Line 318  class SetShapeStoreTests(unittest.TestCa
318          """          """
319          cls = self.layer.GetClassification()          cls = self.layer.GetClassification()
320          self.assert_(cls is self.classification)          self.assert_(cls is self.classification)
321          self.assertEquals(cls.GetField(), "CLPTLABEL")          field = self.layer.GetClassificationColumn()
322          self.assertEquals(cls.GetFieldType(), FIELDTYPE_STRING)          self.assertEquals(field, "CLPTLABEL")
323            self.assertEquals(self.layer.GetFieldType(field), FIELDTYPE_STRING)
324          self.assertEquals(self.layer.GetClassification().GetNumGroups(), 1)          self.assertEquals(self.layer.GetClassification().GetNumGroups(), 1)
325          self.failIf(self.layer.WasModified())          self.failIf(self.layer.WasModified())
326    
# Line 298  class SetShapeStoreTests(unittest.TestCa Line 363  class SetShapeStoreTests(unittest.TestCa
363                               (self.layer, LAYER_SHAPESTORE_REPLACED)])                               (self.layer, LAYER_SHAPESTORE_REPLACED)])
364    
365    
366  class TestLayerLegend(unittest.TestCase, support.SubscriberMixin):  class TestLayerModification(unittest.TestCase, support.SubscriberMixin):
367    
368      """Test cases for Layer method that modify the layer.      """Test cases for Layer method that modify the layer.
369      """      """
# Line 310  class TestLayerLegend(unittest.TestCase, Line 375  class TestLayerLegend(unittest.TestCase,
375          """          """
376          self.clear_messages()          self.clear_messages()
377          self.session = Session("Test session for %s" % self.__class__)          self.session = Session("Test session for %s" % self.__class__)
378          filename = os.path.join("..", "Data", "iceland", "political.shp")          self.filename = os.path.join("..", "Data", "iceland", "political.shp")
379          self.layer = Layer("Test Layer",          self.layer = Layer("Test Layer",
380                             self.session.OpenShapefile(filename))                             self.session.OpenShapefile(self.filename))
381          self.layer.Subscribe(LAYER_LEGEND_CHANGED, self.subscribe_with_params,          self.layer.Subscribe(LAYER_LEGEND_CHANGED, self.subscribe_with_params,
382                               LAYER_LEGEND_CHANGED)                               LAYER_LEGEND_CHANGED)
383          self.layer.Subscribe(LAYER_VISIBILITY_CHANGED,          self.layer.Subscribe(LAYER_VISIBILITY_CHANGED,
384                               self.subscribe_with_params,                               self.subscribe_with_params,
385                               LAYER_VISIBILITY_CHANGED)                               LAYER_VISIBILITY_CHANGED)
386            self.layer.Subscribe(LAYER_CHANGED, self.subscribe_with_params,
387                                 LAYER_CHANGED)
388    
389      def tearDown(self):      def tearDown(self):
390          """Clear the list of received messages and explictly destroy self.layer          """Clear the list of received messages and explictly destroy self.layer
# Line 328  class TestLayerLegend(unittest.TestCase, Line 395  class TestLayerLegend(unittest.TestCase,
395          self.session = None          self.session = None
396          self.clear_messages()          self.clear_messages()
397    
398      def test_initial_settings(self):      def build_path(self, filename):
399          """Test Layer's initial legend attributes"""          return os.path.join("..", "Data", "iceland", filename)
400    
401        def test_sanity(self):
402            """TestLayerModification Sanity Checks"""
403          # test default settings          # test default settings
404          self.failIf(self.layer.WasModified())          self.failIf(self.layer.WasModified())
         #self.assertEquals(self.layer.fill, None)  
         #self.assertEquals(self.layer.stroke.hex(), "#000000")  
         #self.assertEquals(self.layer.stroke_width, 1)  
405          self.assertEquals(self.layer.Visible(), 1)          self.assertEquals(self.layer.Visible(), 1)
406          # no messages should have been produced          # no messages should have been produced
407          self.check_messages([])          self.check_messages([])
# Line 349  class TestLayerLegend(unittest.TestCase, Line 416  class TestLayerLegend(unittest.TestCase,
416          # the layer.          # the layer.
417          self.failIf(self.layer.WasModified())          self.failIf(self.layer.WasModified())
418    
419            def test_set_classification_numerical(self):
420  #          """Test Layer.SetClassification numerical"""
421  # the tree info now contains Color objects which are difficult to test          classification = Classification()
422  #          classification.AppendGroup(ClassGroupRange((0.0, 0.1)))
423  #   def test_tree_info(self):  
424  #       """Test Layer.TreeInfo"""          self.layer.SetClassification(classification)
425  #       self.assertEquals(self.layer.TreeInfo(),          self.layer.SetClassificationColumn("AREA")
426  #                         ("Layer 'Test Layer'",  
427  #                          ['Shown',          self.check_messages([(self.layer, LAYER_CHANGED),
428  #                           'Shapes: 156',                               (self.layer, LAYER_CHANGED)])
429  #                           ('Extent (lat-lon):'          self.failUnless(self.layer.WasModified())
430  #                            ' (-24.5465, 63.2868, -13.4958, 66.5638)'),  
431  #                           'Shapetype: Polygon',          self.clear_messages()
432  #                           'Fill: None',          self.layer.UnsetModified()
433  #                           'Outline: (0.000, 0.000, 0.000)']))  
434            # change only the classification column. This should issue a
435            # LAYER_CHANGED message as well.
436            self.layer.SetClassificationColumn("PERIMETER")
437    
438            self.check_messages([(self.layer, LAYER_CHANGED)])
439            self.failUnless(self.layer.WasModified())
440    
441        def test_set_classification_textual(self):
442            """Test Layer.SetClassification textual"""
443            classification = Classification()
444            classification.AppendGroup(ClassGroupPattern("I"))
445    
446            self.layer.SetClassification(classification)
447            self.layer.SetClassificationColumn("POPYCOUN")
448    
449            self.check_messages([(self.layer, LAYER_CHANGED),
450                                 (self.layer, LAYER_CHANGED)])
451            self.failUnless(self.layer.WasModified())
452    
453            self.clear_messages()
454            self.layer.UnsetModified()
455    
456            # change only the classification column. This should issue a
457            # LAYER_CHANGED message as well.
458            self.layer.SetClassificationColumn("POPYREG")
459    
460            self.check_messages([(self.layer, LAYER_CHANGED)])
461            self.failUnless(self.layer.WasModified())
462    
463    
464        def test_tree_info(self):
465            """Test Layer.TreeInfo"""
466            self.assertEquals(self.layer.TreeInfo(),
467                              ("Layer 'Test Layer'",
468                               ['Filename: %s' % os.path.abspath(self.filename),
469                                'Shown',
470                                'Shapes: 156',
471                       'Extent (lat-lon): (-24.5465, 63.2868, -13.4958, 66.5638)',
472                                'Shapetype: Polygon',
473                                self.layer.GetClassification()]))
474    
475        def test_raster_layer(self):
476            if not Thuban.Model.resource.has_gdal_support():
477                raise support.SkipTest("No gdal support")
478    
479    
480            filename = self.build_path("island.tif")
481            layer = RasterLayer("Test RasterLayer", filename)
482    
483            layer.Subscribe(LAYER_CHANGED, self.subscribe_with_params,
484                            LAYER_CHANGED)
485    
486            self.assertEquals(layer.MaskType(), layer.MASK_BIT)
487    
488            layer.SetMaskType(layer.MASK_NONE)
489            self.failIf(layer.MaskType() != layer.MASK_NONE)
490            self.check_messages([(layer, LAYER_CHANGED)])
491            self.clear_messages()
492    
493            layer.SetMaskType(layer.MASK_NONE)
494            self.failIf(layer.MaskType() != layer.MASK_NONE)
495            self.check_messages([])
496            self.clear_messages()
497    
498            layer.SetMaskType(layer.MASK_BIT)
499            self.failIf(layer.MaskType() != layer.MASK_BIT)
500            self.check_messages([(layer, LAYER_CHANGED)])
501            self.clear_messages()
502    
503            layer.SetMaskType(layer.MASK_BIT)
504            self.failIf(layer.MaskType() != layer.MASK_BIT)
505            self.check_messages([])
506            self.clear_messages()
507    
508            layer.SetMaskType(layer.MASK_ALPHA)
509            self.failIf(layer.MaskType() != layer.MASK_ALPHA)
510    
511            layer.SetOpacity(0)
512            self.assertEquals(layer.Opacity(), 0)
513            layer.SetOpacity(0.5)
514            self.assertEquals(layer.Opacity(), 0.5)
515    
516            self.clear_messages()
517            layer.SetOpacity(1)
518            self.assertEquals(layer.Opacity(), 1)
519            self.check_messages([(layer, LAYER_CHANGED)])
520            self.clear_messages()
521    
522            self.assertRaises(ValueError, layer.SetOpacity, -0.1)
523            self.assertRaises(ValueError, layer.SetOpacity, 1.1)
524    
525            layer.SetMaskType(layer.MASK_NONE)
526            self.clear_messages()
527            self.assertEquals(layer.Opacity(), 1)
528            self.check_messages([])
529            self.clear_messages()
530    
531            self.assertRaises(ValueError, layer.SetMaskType, -1)
532            self.assertRaises(ValueError, layer.SetMaskType, 4)
533    
534    
535  if __name__ == "__main__":  if __name__ == "__main__":
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