/[thuban]/branches/WIP-pyshapelib-bramz/test/test_layer.py
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revision 996 by bh, Thu May 22 18:21:10 2003 UTC revision 1262 by jonathan, Fri Jun 20 14:15:30 2003 UTC
# Line 26  from Thuban.Model.session import Session Line 26  from Thuban.Model.session import Session
26  from Thuban.Model.layer import BaseLayer, Layer, RasterLayer, \  from Thuban.Model.layer import BaseLayer, Layer, RasterLayer, \
27       SHAPETYPE_POLYGON, SHAPETYPE_ARC, SHAPETYPE_POINT       SHAPETYPE_POLYGON, SHAPETYPE_ARC, SHAPETYPE_POINT
28  from Thuban.Model.messages import LAYER_LEGEND_CHANGED, \  from Thuban.Model.messages import LAYER_LEGEND_CHANGED, \
29       LAYER_VISIBILITY_CHANGED       LAYER_VISIBILITY_CHANGED, LAYER_SHAPESTORE_REPLACED, LAYER_CHANGED
30  from Thuban.Model.color import Color  from Thuban.Model.color import Color
31  from Thuban.Model.table import FIELDTYPE_DOUBLE  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
35    
36    import Thuban.Model.resource
37    
38  class TestLayer(unittest.TestCase, support.FileTestMixin,  class TestLayer(unittest.TestCase, support.FileTestMixin,
39                  support.FloatComparisonMixin):                  support.FloatComparisonMixin):
# Line 181  class TestLayer(unittest.TestCase, suppo Line 184  class TestLayer(unittest.TestCase, suppo
184          self.assertEquals(layer.GetFieldType("non existing"), None)          self.assertEquals(layer.GetFieldType("non existing"), None)
185    
186      def test_raster_layer(self):      def test_raster_layer(self):
187            if not Thuban.Model.resource.has_gdal_support():
188                return
189    
190          filename = self.build_path("island.tif")          filename = self.build_path("island.tif")
191          layer = RasterLayer("Test RasterLayer", filename)          layer = RasterLayer("Test RasterLayer", filename)
192          self.assertEquals(layer.GetImageFilename(), filename)          self.assertEquals(layer.GetImageFilename(), filename)
# Line 200  class TestLayer(unittest.TestCase, suppo Line 206  class TestLayer(unittest.TestCase, suppo
206              derived = DerivedShapeStore(store, store.Table())              derived = DerivedShapeStore(store, store.Table())
207              layer.SetShapeStore(derived)              layer.SetShapeStore(derived)
208              self.assert_(layer.ShapeStore() is derived)              self.assert_(layer.ShapeStore() is derived)
209    
210                # check that an exception is raised when the number
211                # of shapes differ from the number of rows in a table.
212                layer2 = Layer("Test Layer",
213                               self.open_shapefile("political.shp"))
214                store2 = layer2.ShapeStore()
215                self.assertRaises(ValueError,
216                                  DerivedShapeStore, store2, store.Table())
217    
218          finally:          finally:
219              store = derived = None              store = derived = None
220                layer2.Destroy()
221                store2 = None
222    
223    
224    class SetShapeStoreTests(unittest.TestCase, support.SubscriberMixin):
225    
226        def setUp(self):
227            """Create a layer with a classification as self.layer"""
228            self.clear_messages()
229            self.session = Session("Test session for %s" % self.__class__)
230            self.shapefilename = os.path.join("..", "Data", "iceland",
231                                              "cultural_landmark-point.dbf")
232            self.store = self.session.OpenShapefile(self.shapefilename)
233            self.layer = Layer("test layer", self.store)
234            self.classification = Classification(field = "CLPTLABEL")
235            self.classification.AppendGroup(ClassGroupSingleton("FARM"))
236            self.layer.SetClassification(self.classification)
237            self.layer.UnsetModified()
238            self.layer.Subscribe(LAYER_SHAPESTORE_REPLACED,
239                                 self.subscribe_with_params,
240                                 LAYER_SHAPESTORE_REPLACED)
241            self.layer.Subscribe(LAYER_CHANGED,
242                                 self.subscribe_with_params, LAYER_CHANGED)
243    
244        def tearDown(self):
245            self.clear_messages()
246            self.layer.Destroy()
247            self.session.Destroy()
248            self.session = self.layer = self.store = self.classification = None
249    
250        def test_sanity(self):
251            """SetShapeStoreTests sanity check
252    
253            Test the initial state of the test case instances after setUp.
254            """
255            cls = self.layer.GetClassification()
256            self.assert_(cls is self.classification)
257            self.assertEquals(cls.GetField(), "CLPTLABEL")
258            self.assertEquals(cls.GetFieldType(), FIELDTYPE_STRING)
259            self.assertEquals(self.layer.GetClassification().GetNumGroups(), 1)
260            self.failIf(self.layer.WasModified())
261    
262        def test_set_shape_store_modified_flag(self):
263            """Test whether Layer.SetShapeStore() sets the modified flag"""
264            memtable = MemoryTable([("FOO", FIELDTYPE_STRING)],
265                          [("bla",)] * self.layer.ShapeStore().Table().NumRows())
266            self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable))
267    
268            self.assert_(self.layer.WasModified())
269    
270        def test_set_shape_store_different_field_name(self):
271            """Test Layer.SetShapeStore() with different column name"""
272            memtable = MemoryTable([("FOO", FIELDTYPE_STRING)],
273                          [("bla",)] * self.layer.ShapeStore().Table().NumRows())
274            self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable))
275            # The classification should contain only the default group now.
276            self.assertEquals(self.layer.GetClassification().GetNumGroups(), 0)
277            self.check_messages([(self.layer, LAYER_CHANGED),
278                                 (self.layer, LAYER_SHAPESTORE_REPLACED)])
279    
280        def test_set_shape_store_same_field(self):
281            """Test Layer.SetShapeStore() with same column name and type"""
282            memtable = MemoryTable([("CLPTLABEL", FIELDTYPE_STRING)],
283                          [("bla",)] * self.layer.ShapeStore().Table().NumRows())
284            self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable))
285            # The classification should be the same as before
286            self.assert_(self.layer.GetClassification() is self.classification)
287            self.check_messages([(self.layer, LAYER_SHAPESTORE_REPLACED)])
288    
289        def test_set_shape_store_same_field_different_type(self):
290            """Test Layer.SetShapeStore() with same column name but different type
291            """
292            memtable = MemoryTable([("CLPTLABEL", FIELDTYPE_DOUBLE)],
293                          [(0.0,)] * self.layer.ShapeStore().Table().NumRows())
294            self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable))
295            # The classification should contain only the default group now.
296            self.assertEquals(self.layer.GetClassification().GetNumGroups(), 0)
297            self.check_messages([(self.layer, LAYER_CHANGED),
298                                 (self.layer, LAYER_SHAPESTORE_REPLACED)])
299    
300    
301  class TestLayerLegend(unittest.TestCase, support.SubscriberMixin):  class TestLayerLegend(unittest.TestCase, support.SubscriberMixin):
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