/[thuban]/branches/WIP-pyshapelib-bramz/test/test_layer.py
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revision 947 by jonathan, Tue May 20 15:27:19 2003 UTC revision 1142 by bh, Tue Jun 10 09:41:57 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
34    from Thuban.Model.classification import Classification, ClassGroupSingleton
35    
36  class TestLayer(unittest.TestCase, support.FileTestMixin,  class TestLayer(unittest.TestCase, support.FileTestMixin,
37                  support.FloatComparisonMixin):                  support.FloatComparisonMixin):
# Line 42  class TestLayer(unittest.TestCase, suppo Line 44  class TestLayer(unittest.TestCase, suppo
44              self.assertFloatSeqEqual(test[i], value[i])              self.assertFloatSeqEqual(test[i], value[i])
45    
46      def setUp(self):      def setUp(self):
47          """Create a session"""          """Create a session self.session and initialize self.layer to None"""
48          self.session = Session("Test session for %s" % self.__class__)          self.session = Session("Test session for %s" % self.__class__)
49            self.layer = None
50    
51      def tearDown(self):      def tearDown(self):
52            """Call the layer's Destroy method and set session and layer to None"""
53          self.session = None          self.session = None
54            if self.layer is not None:
55                self.layer.Destroy()
56                self.layer = None
57    
58      def build_path(self, filename):      def build_path(self, filename):
59          return os.path.join("..", "Data", "iceland", filename)          return os.path.join("..", "Data", "iceland", filename)
60            
61      def open_shapefile(self, filename):      def open_shapefile(self, filename):
62          """Open and return a shapestore for filename in the iceland data set"""          """Open and return a shapestore for filename in the iceland data set"""
63          return self.session.OpenShapefile(self.build_path(filename))          return self.session.OpenShapefile(self.build_path(filename))
64    
65      def test_base_layer(self):      def test_base_layer(self):
66          layer = BaseLayer("Test BaseLayer")          layer = self.layer = BaseLayer("Test BaseLayer")
67          self.assertEquals(layer.Title(), "Test BaseLayer")          self.assertEquals(layer.Title(), "Test BaseLayer")
68          self.failUnless(layer.Visible())          self.failUnless(layer.Visible())
69    
# Line 83  class TestLayer(unittest.TestCase, suppo Line 90  class TestLayer(unittest.TestCase, suppo
90    
91      def test_arc_layer(self):      def test_arc_layer(self):
92          """Test Layer with arc shapes"""          """Test Layer with arc shapes"""
93          layer = Layer("Test Layer", self.open_shapefile("roads-line.shp"))          layer = self.layer = Layer("Test Layer",
94                                       self.open_shapefile("roads-line.shp"))
95          self.assertEquals(layer.ShapeType(), SHAPETYPE_ARC)          self.assertEquals(layer.ShapeType(), SHAPETYPE_ARC)
96          self.assertEquals(layer.NumShapes(), 839)          self.assertEquals(layer.NumShapes(), 839)
97          shape = layer.Shape(32)          shape = layer.Shape(32)
# Line 114  class TestLayer(unittest.TestCase, suppo Line 122  class TestLayer(unittest.TestCase, suppo
122          self.assertEquals(layer.ShapesBoundingBox([]), None)          self.assertEquals(layer.ShapesBoundingBox([]), None)
123          self.assertEquals(layer.ShapesBoundingBox(None), None)          self.assertEquals(layer.ShapesBoundingBox(None), None)
124    
         layer.Destroy()  
   
125      def test_polygon_layer(self):      def test_polygon_layer(self):
126          """Test Layer with polygon shapes"""          """Test Layer with polygon shapes"""
127          layer = Layer("Test Layer", self.open_shapefile("political.shp"))          layer = self.layer = Layer("Test Layer",
128                                       self.open_shapefile("political.shp"))
129          self.assertEquals(layer.ShapeType(), SHAPETYPE_POLYGON)          self.assertEquals(layer.ShapeType(), SHAPETYPE_POLYGON)
130          self.assertEquals(layer.NumShapes(), 156)          self.assertEquals(layer.NumShapes(), 156)
131          shape = layer.Shape(4)          shape = layer.Shape(4)
# Line 132  class TestLayer(unittest.TestCase, suppo Line 139  class TestLayer(unittest.TestCase, suppo
139                                    -13.495815277099609, 66.563774108886719])                                    -13.495815277099609, 66.563774108886719])
140          self.assertEquals(layer.ShapesInRegion((-24.0, 64.0, -23.9, 64.1)),          self.assertEquals(layer.ShapesInRegion((-24.0, 64.0, -23.9, 64.1)),
141                            [91, 92, 144, 146, 148, 150, 152, 153])                            [91, 92, 144, 146, 148, 150, 152, 153])
         layer.Destroy()  
142    
143      def test_point_layer(self):      def test_point_layer(self):
144          """Test Layer with point shapes"""          """Test Layer with point shapes"""
145          layer = Layer("Test Layer",          layer = self.layer = Layer("Test Layer",
146                        self.open_shapefile("cultural_landmark-point.shp"))                             self.open_shapefile("cultural_landmark-point.shp"))
147          self.assertEquals(layer.ShapeType(), SHAPETYPE_POINT)          self.assertEquals(layer.ShapeType(), SHAPETYPE_POINT)
148          self.assertEquals(layer.NumShapes(), 34)          self.assertEquals(layer.NumShapes(), 34)
149          shape = layer.Shape(0)          shape = layer.Shape(0)
# Line 148  class TestLayer(unittest.TestCase, suppo Line 154  class TestLayer(unittest.TestCase, suppo
154                                    -15.12291431427002, 66.36572265625])                                    -15.12291431427002, 66.36572265625])
155          self.assertEquals(layer.ShapesInRegion((-24.0, 64.0, -23.80, 64.1)),          self.assertEquals(layer.ShapesInRegion((-24.0, 64.0, -23.80, 64.1)),
156                            [0, 1, 2, 3, 4, 5, 27, 28, 29, 30, 31])                            [0, 1, 2, 3, 4, 5, 27, 28, 29, 30, 31])
         layer.Destroy()  
157    
158      def test_empty_layer(self):      def test_empty_layer(self):
159          """Test Layer with empty shape file"""          """Test Layer with empty shape file"""
# Line 163  class TestLayer(unittest.TestCase, suppo Line 168  class TestLayer(unittest.TestCase, suppo
168          dbf.add_field("NAME", dbflib.FTString, 20, 0)          dbf.add_field("NAME", dbflib.FTString, 20, 0)
169    
170          # Now try to open it.          # Now try to open it.
171          layer = Layer("Empty Layer",          layer = self.layer = Layer("Empty Layer",
172                        self.session.OpenShapefile(shapefilename))                                     self.session.OpenShapefile(shapefilename))
173          self.assertEquals(layer.BoundingBox(), None)          self.assertEquals(layer.BoundingBox(), None)
174          self.assertEquals(layer.LatLongBoundingBox(), None)          self.assertEquals(layer.LatLongBoundingBox(), None)
175          self.assertEquals(layer.NumShapes(), 0)          self.assertEquals(layer.NumShapes(), 0)
         layer.Destroy()  
176    
177      def test_get_field_type(self):      def test_get_field_type(self):
178          """Test Layer.GetFieldType()"""          """Test Layer.GetFieldType()"""
179          layer = Layer("Test Layer", self.open_shapefile("roads-line.shp"))          layer = self.layer = Layer("Test Layer",
180                                       self.open_shapefile("roads-line.shp"))
181          self.assertEquals(layer.GetFieldType("LENGTH"), FIELDTYPE_DOUBLE)          self.assertEquals(layer.GetFieldType("LENGTH"), FIELDTYPE_DOUBLE)
182          self.assertEquals(layer.GetFieldType("non existing"), None)          self.assertEquals(layer.GetFieldType("non existing"), None)
         layer.Destroy()  
183    
184      def test_raster_layer(self):      def test_raster_layer(self):
185          filename = self.build_path("island.tif")          filename = self.build_path("island.tif")
# Line 188  class TestLayer(unittest.TestCase, suppo Line 192  class TestLayer(unittest.TestCase, suppo
192                                   [-24.5500000, 63.2833330,                                   [-24.5500000, 63.2833330,
193                                    -13.4916670, 66.5666670])                                    -13.4916670, 66.5666670])
194    
195        def test_derived_store(self):
196            """Test layer with derived store"""
197            layer = self.layer = Layer("Test Layer",
198                                       self.open_shapefile("roads-line.shp"))
199            try:
200                store = layer.ShapeStore()
201                derived = DerivedShapeStore(store, store.Table())
202                layer.SetShapeStore(derived)
203                self.assert_(layer.ShapeStore() is derived)
204            finally:
205                store = derived = None
206    
207    
208    class SetShapeStoreTests(unittest.TestCase, support.SubscriberMixin):
209    
210        def setUp(self):
211            """Create a layer with a classification as self.layer"""
212            self.clear_messages()
213            self.session = Session("Test session for %s" % self.__class__)
214            self.shapefilename = os.path.join("..", "Data", "iceland",
215                                              "cultural_landmark-point.dbf")
216            self.store = self.session.OpenShapefile(self.shapefilename)
217            self.layer = Layer("test layer", self.store)
218            self.classification = Classification(field = "CLPTLABEL")
219            self.classification.AppendGroup(ClassGroupSingleton("FARM"))
220            self.layer.SetClassification(self.classification)
221            self.layer.UnsetModified()
222            self.layer.Subscribe(LAYER_SHAPESTORE_REPLACED,
223                                 self.subscribe_with_params,
224                                 LAYER_SHAPESTORE_REPLACED)
225            self.layer.Subscribe(LAYER_CHANGED,
226                                 self.subscribe_with_params, LAYER_CHANGED)
227    
228        def tearDown(self):
229            self.clear_messages()
230            self.layer.Destroy()
231            self.session.Destroy()
232            self.session = self.layer = self.store = self.classification = None
233    
234        def test_sanity(self):
235            """SetShapeStoreTests sanity check
236    
237            Test the initial state of the test case instances after setUp.
238            """
239            cls = self.layer.GetClassification()
240            self.assert_(cls is self.classification)
241            self.assertEquals(cls.GetField(), "CLPTLABEL")
242            self.assertEquals(cls.GetFieldType(), FIELDTYPE_STRING)
243            self.assertEquals(self.layer.GetClassification().GetNumGroups(), 1)
244            self.failIf(self.layer.WasModified())
245    
246        def test_set_shape_store_modified_flag(self):
247            """Test whether Layer.SetShapeStore() sets the modified flag"""
248            memtable = MemoryTable([("FOO", FIELDTYPE_STRING)],
249                          [("bla",)] * self.layer.ShapeStore().Table().NumRows())
250            self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable))
251    
252            self.assert_(self.layer.WasModified())
253    
254        def test_set_shape_store_different_field_name(self):
255            """Test Layer.SetShapeStore() with different column name"""
256            memtable = MemoryTable([("FOO", FIELDTYPE_STRING)],
257                          [("bla",)] * self.layer.ShapeStore().Table().NumRows())
258            self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable))
259            # The classification should contain only the default group now.
260            self.assertEquals(self.layer.GetClassification().GetNumGroups(), 0)
261            self.check_messages([(self.layer, LAYER_CHANGED),
262                                 (self.layer, LAYER_SHAPESTORE_REPLACED)])
263    
264        def test_set_shape_store_same_field(self):
265            """Test Layer.SetShapeStore() with same column name and type"""
266            memtable = MemoryTable([("CLPTLABEL", FIELDTYPE_STRING)],
267                          [("bla",)] * self.layer.ShapeStore().Table().NumRows())
268            self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable))
269            # The classification should be the same as before
270            self.assert_(self.layer.GetClassification() is self.classification)
271            self.check_messages([(self.layer, LAYER_SHAPESTORE_REPLACED)])
272    
273        def test_set_shape_store_same_field_different_type(self):
274            """Test Layer.SetShapeStore() with same column name but different type
275            """
276            memtable = MemoryTable([("CLPTLABEL", FIELDTYPE_DOUBLE)],
277                          [(0.0,)] * self.layer.ShapeStore().Table().NumRows())
278            self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable))
279            # The classification should contain only the default group now.
280            self.assertEquals(self.layer.GetClassification().GetNumGroups(), 0)
281            self.check_messages([(self.layer, LAYER_CHANGED),
282                                 (self.layer, LAYER_SHAPESTORE_REPLACED)])
283    
284    
285  class TestLayerLegend(unittest.TestCase, support.SubscriberMixin):  class TestLayerLegend(unittest.TestCase, support.SubscriberMixin):
286    
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