/[thuban]/branches/WIP-pyshapelib-bramz/test/test_layer.py
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revision 336 by bh, Fri Sep 20 16:26:09 2002 UTC revision 1174 by jonathan, Thu Jun 12 13:37:29 2003 UTC
# Line 1  Line 1 
1  # Copyright (c) 2002 by Intevation GmbH  # Copyright (c) 2002, 2003 by Intevation GmbH
2  # Authors:  # Authors:
3  # Bernhard Herzog <[email protected]>  # Bernhard Herzog <[email protected]>
4  #  #
# Line 22  support.initthuban() Line 22  support.initthuban()
22  import shapelib  import shapelib
23  import dbflib  import dbflib
24    
25  from Thuban.Model.layer import Layer, SHAPETYPE_POLYGON, SHAPETYPE_ARC, \  from Thuban.Model.session import Session
26       SHAPETYPE_POINT  from Thuban.Model.layer import BaseLayer, Layer, RasterLayer, \
27         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, FIELDTYPE_STRING, MemoryTable
32    from Thuban.Model.proj import Projection
33    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 38  class TestLayer(unittest.TestCase, suppo Line 45  class TestLayer(unittest.TestCase, suppo
45          for i in range(len(test)):          for i in range(len(test)):
46              self.assertFloatSeqEqual(test[i], value[i])              self.assertFloatSeqEqual(test[i], value[i])
47    
48        def setUp(self):
49            """Create a session self.session and initialize self.layer to None"""
50            self.session = Session("Test session for %s" % self.__class__)
51            self.layer = None
52    
53        def tearDown(self):
54            """Call the layer's Destroy method and set session and layer to None"""
55            self.session = None
56            if self.layer is not None:
57                self.layer.Destroy()
58                self.layer = None
59    
60        def build_path(self, filename):
61            return os.path.join("..", "Data", "iceland", filename)
62    
63        def open_shapefile(self, filename):
64            """Open and return a shapestore for filename in the iceland data set"""
65            return self.session.OpenShapefile(self.build_path(filename))
66    
67        def test_base_layer(self):
68            layer = self.layer = BaseLayer("Test BaseLayer")
69            self.assertEquals(layer.Title(), "Test BaseLayer")
70            self.failUnless(layer.Visible())
71    
72            # toggle visibility
73            layer.SetVisible(False)
74            self.failIf(layer.Visible())
75    
76            layer.SetVisible(True)
77            self.failUnless(layer.Visible())
78    
79            self.failIf(layer.HasClassification())
80            self.assertEquals(layer.GetProjection(), None)
81    
82            # set/get projection
83            proj = Projection(["proj=utm", "zone=26"])
84    
85            layer.SetProjection(proj)
86            self.failUnless(layer.GetProjection() is proj)
87    
88            # __init__ with other arguments
89            layer = BaseLayer("Test BaseLayer", False, proj)
90            self.failIf(layer.Visible())
91            self.failUnless(layer.GetProjection() is proj)
92    
93      def test_arc_layer(self):      def test_arc_layer(self):
94          """Test Layer with arc shapes"""          """Test Layer with arc shapes"""
95          layer = Layer("Test Layer",          layer = self.layer = Layer("Test Layer",
96                        os.path.join("..", "Data", "iceland", "roads-line.shp"))                                     self.open_shapefile("roads-line.shp"))
         self.assertEquals(layer.Title(), "Test Layer")  
97          self.assertEquals(layer.ShapeType(), SHAPETYPE_ARC)          self.assertEquals(layer.ShapeType(), SHAPETYPE_ARC)
98          self.assertEquals(layer.NumShapes(), 839)          self.assertEquals(layer.NumShapes(), 839)
99          shape = layer.Shape(32)          shape = layer.Shape(32)
# Line 55  class TestLayer(unittest.TestCase, suppo Line 106  class TestLayer(unittest.TestCase, suppo
106          self.assertEquals(layer.ShapesInRegion((-24.0, 64.0, -23.75, 64.25)),          self.assertEquals(layer.ShapesInRegion((-24.0, 64.0, -23.75, 64.25)),
107                            [613, 726, 838])                            [613, 726, 838])
108    
109            self.assertFloatSeqEqual(layer.ShapesBoundingBox([32]),
110                              [-15.082174301147461, 66.27339172363281,
111                               -15.026350021362305, 66.27738189697265])
112    
113            shape = layer.Shape(33)
114            self.assertFloatTuplesEqual(shape.Points(),
115                                        [(-22.248506546020508, 66.30645751953125),
116                                         (-22.232730865478516, 66.294075012207031),
117                                         (-22.23158073425293,  66.287689208984375),
118                                         (-22.246318817138672, 66.270065307617188)])
119    
120            self.assertFloatSeqEqual(layer.ShapesBoundingBox([32, 33]),
121                                     [-22.248506546020508, 66.270065307617188,
122                                      -15.026350021362305, 66.30645751953125])
123    
124            self.assertEquals(layer.ShapesBoundingBox([]), None)
125            self.assertEquals(layer.ShapesBoundingBox(None), None)
126    
127      def test_polygon_layer(self):      def test_polygon_layer(self):
128          """Test Layer with polygon shapes"""          """Test Layer with polygon shapes"""
129          layer = Layer("Test Layer",          layer = self.layer = Layer("Test Layer",
130                        os.path.join("..", "Data", "iceland", "political.shp"))                                     self.open_shapefile("political.shp"))
         self.assertEquals(layer.Title(), "Test Layer")  
131          self.assertEquals(layer.ShapeType(), SHAPETYPE_POLYGON)          self.assertEquals(layer.ShapeType(), SHAPETYPE_POLYGON)
132          self.assertEquals(layer.NumShapes(), 156)          self.assertEquals(layer.NumShapes(), 156)
133          shape = layer.Shape(4)          shape = layer.Shape(4)
# Line 76  class TestLayer(unittest.TestCase, suppo Line 144  class TestLayer(unittest.TestCase, suppo
144    
145      def test_point_layer(self):      def test_point_layer(self):
146          """Test Layer with point shapes"""          """Test Layer with point shapes"""
147          layer = Layer("Test Layer",          layer = self.layer = Layer("Test Layer",
148                        os.path.join("..", "Data", "iceland",                             self.open_shapefile("cultural_landmark-point.shp"))
                                    "cultural_landmark-point.shp"))  
         self.assertEquals(layer.Title(), "Test Layer")  
149          self.assertEquals(layer.ShapeType(), SHAPETYPE_POINT)          self.assertEquals(layer.ShapeType(), SHAPETYPE_POINT)
150          self.assertEquals(layer.NumShapes(), 34)          self.assertEquals(layer.NumShapes(), 34)
151          shape = layer.Shape(0)          shape = layer.Shape(0)
# Line 104  class TestLayer(unittest.TestCase, suppo Line 170  class TestLayer(unittest.TestCase, suppo
170          dbf.add_field("NAME", dbflib.FTString, 20, 0)          dbf.add_field("NAME", dbflib.FTString, 20, 0)
171    
172          # Now try to open it.          # Now try to open it.
173          layer = Layer("Empty Layer", shapefilename)          layer = self.layer = Layer("Empty Layer",
174                                       self.session.OpenShapefile(shapefilename))
175          self.assertEquals(layer.BoundingBox(), None)          self.assertEquals(layer.BoundingBox(), None)
176          self.assertEquals(layer.LatLongBoundingBox(), None)          self.assertEquals(layer.LatLongBoundingBox(), None)
177          self.assertEquals(layer.NumShapes(), 0)          self.assertEquals(layer.NumShapes(), 0)
178    
179        def test_get_field_type(self):
180            """Test Layer.GetFieldType()"""
181            layer = self.layer = Layer("Test Layer",
182                                       self.open_shapefile("roads-line.shp"))
183            self.assertEquals(layer.GetFieldType("LENGTH"), FIELDTYPE_DOUBLE)
184            self.assertEquals(layer.GetFieldType("non existing"), None)
185    
186        def test_raster_layer(self):
187            if not Thuban.Model.resource.has_gdal_support():
188                return
189    
190            filename = self.build_path("island.tif")
191            layer = RasterLayer("Test RasterLayer", filename)
192            self.assertEquals(layer.GetImageFilename(), filename)
193            self.assertFloatSeqEqual(layer.BoundingBox(),
194                                     [-24.5500000, 63.2833330,
195                                      -13.4916670, 66.5666670])
196            self.assertFloatSeqEqual(layer.LatLongBoundingBox(),
197                                     [-24.5500000, 63.2833330,
198                                      -13.4916670, 66.5666670])
199    
200        def test_derived_store(self):
201            """Test layer with derived store"""
202            layer = self.layer = Layer("Test Layer",
203                                       self.open_shapefile("roads-line.shp"))
204            try:
205                store = layer.ShapeStore()
206                derived = DerivedShapeStore(store, store.Table())
207                layer.SetShapeStore(derived)
208                self.assert_(layer.ShapeStore() is derived)
209            finally:
210                store = derived = None
211    
212    
213    class SetShapeStoreTests(unittest.TestCase, support.SubscriberMixin):
214    
215        def setUp(self):
216            """Create a layer with a classification as self.layer"""
217            self.clear_messages()
218            self.session = Session("Test session for %s" % self.__class__)
219            self.shapefilename = os.path.join("..", "Data", "iceland",
220                                              "cultural_landmark-point.dbf")
221            self.store = self.session.OpenShapefile(self.shapefilename)
222            self.layer = Layer("test layer", self.store)
223            self.classification = Classification(field = "CLPTLABEL")
224            self.classification.AppendGroup(ClassGroupSingleton("FARM"))
225            self.layer.SetClassification(self.classification)
226            self.layer.UnsetModified()
227            self.layer.Subscribe(LAYER_SHAPESTORE_REPLACED,
228                                 self.subscribe_with_params,
229                                 LAYER_SHAPESTORE_REPLACED)
230            self.layer.Subscribe(LAYER_CHANGED,
231                                 self.subscribe_with_params, LAYER_CHANGED)
232    
233        def tearDown(self):
234            self.clear_messages()
235            self.layer.Destroy()
236            self.session.Destroy()
237            self.session = self.layer = self.store = self.classification = None
238    
239        def test_sanity(self):
240            """SetShapeStoreTests sanity check
241    
242            Test the initial state of the test case instances after setUp.
243            """
244            cls = self.layer.GetClassification()
245            self.assert_(cls is self.classification)
246            self.assertEquals(cls.GetField(), "CLPTLABEL")
247            self.assertEquals(cls.GetFieldType(), FIELDTYPE_STRING)
248            self.assertEquals(self.layer.GetClassification().GetNumGroups(), 1)
249            self.failIf(self.layer.WasModified())
250    
251        def test_set_shape_store_modified_flag(self):
252            """Test whether Layer.SetShapeStore() sets the modified flag"""
253            memtable = MemoryTable([("FOO", FIELDTYPE_STRING)],
254                          [("bla",)] * self.layer.ShapeStore().Table().NumRows())
255            self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable))
256    
257            self.assert_(self.layer.WasModified())
258    
259        def test_set_shape_store_different_field_name(self):
260            """Test Layer.SetShapeStore() with different column name"""
261            memtable = MemoryTable([("FOO", FIELDTYPE_STRING)],
262                          [("bla",)] * self.layer.ShapeStore().Table().NumRows())
263            self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable))
264            # The classification should contain only the default group now.
265            self.assertEquals(self.layer.GetClassification().GetNumGroups(), 0)
266            self.check_messages([(self.layer, LAYER_CHANGED),
267                                 (self.layer, LAYER_SHAPESTORE_REPLACED)])
268    
269        def test_set_shape_store_same_field(self):
270            """Test Layer.SetShapeStore() with same column name and type"""
271            memtable = MemoryTable([("CLPTLABEL", FIELDTYPE_STRING)],
272                          [("bla",)] * self.layer.ShapeStore().Table().NumRows())
273            self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable))
274            # The classification should be the same as before
275            self.assert_(self.layer.GetClassification() is self.classification)
276            self.check_messages([(self.layer, LAYER_SHAPESTORE_REPLACED)])
277    
278        def test_set_shape_store_same_field_different_type(self):
279            """Test Layer.SetShapeStore() with same column name but different type
280            """
281            memtable = MemoryTable([("CLPTLABEL", FIELDTYPE_DOUBLE)],
282                          [(0.0,)] * self.layer.ShapeStore().Table().NumRows())
283            self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable))
284            # The classification should contain only the default group now.
285            self.assertEquals(self.layer.GetClassification().GetNumGroups(), 0)
286            self.check_messages([(self.layer, LAYER_CHANGED),
287                                 (self.layer, LAYER_SHAPESTORE_REPLACED)])
288    
289    
290  class TestLayerLegend(unittest.TestCase, support.SubscriberMixin):  class TestLayerLegend(unittest.TestCase, support.SubscriberMixin):
291    
# Line 116  class TestLayerLegend(unittest.TestCase, Line 293  class TestLayerLegend(unittest.TestCase,
293      """      """
294    
295      def setUp(self):      def setUp(self):
296          """Clear the list of received messages and create a layer          """Clear the list of received messages and create a layer and a session
297    
298          The layer is bound to self.layer.          The layer is bound to self.layer and the session to self.session.
299          """          """
300          self.clear_messages()          self.clear_messages()
301            self.session = Session("Test session for %s" % self.__class__)
302            filename = os.path.join("..", "Data", "iceland", "political.shp")
303          self.layer = Layer("Test Layer",          self.layer = Layer("Test Layer",
304                             os.path.join("..", "Data", "iceland",                             self.session.OpenShapefile(filename))
                                         "political.shp"))  
305          self.layer.Subscribe(LAYER_LEGEND_CHANGED, self.subscribe_with_params,          self.layer.Subscribe(LAYER_LEGEND_CHANGED, self.subscribe_with_params,
306                               LAYER_LEGEND_CHANGED)                               LAYER_LEGEND_CHANGED)
307          self.layer.Subscribe(LAYER_VISIBILITY_CHANGED,          self.layer.Subscribe(LAYER_VISIBILITY_CHANGED,
# Line 134  class TestLayerLegend(unittest.TestCase, Line 312  class TestLayerLegend(unittest.TestCase,
312          """Clear the list of received messages and explictly destroy self.layer          """Clear the list of received messages and explictly destroy self.layer
313          """          """
314          self.layer.Destroy()          self.layer.Destroy()
315            self.layer = None
316            self.session.Destroy()
317            self.session = None
318          self.clear_messages()          self.clear_messages()
319    
320      def test_initial_settings(self):      def test_initial_settings(self):
321          """Test Layer's initial legend attributes"""          """Test Layer's initial legend attributes"""
322          # test default settings          # test default settings
323          self.failIf(self.layer.WasModified())          self.failIf(self.layer.WasModified())
324          self.assertEquals(self.layer.fill, None)          #self.assertEquals(self.layer.fill, None)
325          self.assertEquals(self.layer.stroke.hex(), "#000000")          #self.assertEquals(self.layer.stroke.hex(), "#000000")
326          self.assertEquals(self.layer.stroke_width, 1)          #self.assertEquals(self.layer.stroke_width, 1)
327          self.assertEquals(self.layer.Visible(), 1)          self.assertEquals(self.layer.Visible(), 1)
328          # no messages should have been produced          # no messages should have been produced
329          self.check_messages([])          self.check_messages([])
330    
     def test_fill(self):  
         """Test Layer's fill attribute"""  
         # modify the fill  
         self.layer.SetFill(Color(0.5, 1.0, 0.75))  
         self.check_messages([(self.layer, LAYER_LEGEND_CHANGED)])  
         self.assertEquals(self.layer.fill.hex().lower(), "#7fffbf")  
         self.assert_(self.layer.WasModified())  
   
     def test_stroke(self):  
         """Test Layer's stroke attribute"""  
         self.layer.SetStroke(Color(0.5, 1.0, 0.75))  
         self.assertEquals(self.layer.stroke.hex().lower(), "#7fffbf")  
         self.check_messages([(self.layer, LAYER_LEGEND_CHANGED)])  
         self.assert_(self.layer.WasModified())  
   
     def test_stroke_width(self):  
         """Test Layer's stroke_width attribute"""  
         self.layer.SetStrokeWidth(3.0)  
         self.assertEquals(self.layer.stroke_width, 3.0)  
         self.check_messages([(self.layer, LAYER_LEGEND_CHANGED)])  
         self.assert_(self.layer.WasModified())  
   
331      def test_visibility(self):      def test_visibility(self):
332          """Test Layer visibility"""          """Test Layer visibility"""
333          self.layer.SetVisible(0)          self.layer.SetVisible(0)
# Line 179  class TestLayerLegend(unittest.TestCase, Line 338  class TestLayerLegend(unittest.TestCase,
338          # the layer.          # the layer.
339          self.failIf(self.layer.WasModified())          self.failIf(self.layer.WasModified())
340    
341      def test_tree_info(self):      
342          """Test Layer.TreeInfo"""  #
343          self.assertEquals(self.layer.TreeInfo(),  # the tree info now contains Color objects which are difficult to test
344                            ("Layer 'Test Layer'",  #
345                             ['Shown',  #   def test_tree_info(self):
346                              'Shapes: 156',  #       """Test Layer.TreeInfo"""
347                              ('Extent (lat-lon):'  #       self.assertEquals(self.layer.TreeInfo(),
348                               ' (-24.5465, 63.2868, -13.4958, 66.5638)'),  #                         ("Layer 'Test Layer'",
349                              'Shapetype: Polygon',  #                          ['Shown',
350                              'Fill: None',  #                           'Shapes: 156',
351                              'Outline: (0.000, 0.000, 0.000)']))  #                           ('Extent (lat-lon):'
352    #                            ' (-24.5465, 63.2868, -13.4958, 66.5638)'),
353    #                           'Shapetype: Polygon',
354    #                           'Fill: None',
355    #                           'Outline: (0.000, 0.000, 0.000)']))
356    
357    
358  if __name__ == "__main__":  if __name__ == "__main__":
359      unittest.main()      support.run_tests()
Legend:
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