/[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 1142 by bh, Tue Jun 10 09:41:57 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  class TestLayer(unittest.TestCase, support.FileTestMixin,  class TestLayer(unittest.TestCase, support.FileTestMixin,
37                  support.FloatComparisonMixin):                  support.FloatComparisonMixin):
# Line 38  class TestLayer(unittest.TestCase, suppo Line 43  class TestLayer(unittest.TestCase, suppo
43          for i in range(len(test)):          for i in range(len(test)):
44              self.assertFloatSeqEqual(test[i], value[i])              self.assertFloatSeqEqual(test[i], value[i])
45    
46        def setUp(self):
47            """Create a session self.session and initialize self.layer to None"""
48            self.session = Session("Test session for %s" % self.__class__)
49            self.layer = None
50    
51        def tearDown(self):
52            """Call the layer's Destroy method and set session and layer to None"""
53            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):
59            return os.path.join("..", "Data", "iceland", filename)
60    
61        def open_shapefile(self, filename):
62            """Open and return a shapestore for filename in the iceland data set"""
63            return self.session.OpenShapefile(self.build_path(filename))
64    
65        def test_base_layer(self):
66            layer = self.layer = BaseLayer("Test BaseLayer")
67            self.assertEquals(layer.Title(), "Test BaseLayer")
68            self.failUnless(layer.Visible())
69    
70            # toggle visibility
71            layer.SetVisible(False)
72            self.failIf(layer.Visible())
73    
74            layer.SetVisible(True)
75            self.failUnless(layer.Visible())
76    
77            self.failIf(layer.HasClassification())
78            self.assertEquals(layer.GetProjection(), None)
79    
80            # set/get projection
81            proj = Projection(["proj=utm", "zone=26"])
82    
83            layer.SetProjection(proj)
84            self.failUnless(layer.GetProjection() is proj)
85    
86            # __init__ with other arguments
87            layer = BaseLayer("Test BaseLayer", False, proj)
88            self.failIf(layer.Visible())
89            self.failUnless(layer.GetProjection() is proj)
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",          layer = self.layer = Layer("Test Layer",
94                        os.path.join("..", "Data", "iceland", "roads-line.shp"))                                     self.open_shapefile("roads-line.shp"))
         self.assertEquals(layer.Title(), "Test Layer")  
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 55  class TestLayer(unittest.TestCase, suppo Line 104  class TestLayer(unittest.TestCase, suppo
104          self.assertEquals(layer.ShapesInRegion((-24.0, 64.0, -23.75, 64.25)),          self.assertEquals(layer.ShapesInRegion((-24.0, 64.0, -23.75, 64.25)),
105                            [613, 726, 838])                            [613, 726, 838])
106    
107            self.assertFloatSeqEqual(layer.ShapesBoundingBox([32]),
108                              [-15.082174301147461, 66.27339172363281,
109                               -15.026350021362305, 66.27738189697265])
110    
111            shape = layer.Shape(33)
112            self.assertFloatTuplesEqual(shape.Points(),
113                                        [(-22.248506546020508, 66.30645751953125),
114                                         (-22.232730865478516, 66.294075012207031),
115                                         (-22.23158073425293,  66.287689208984375),
116                                         (-22.246318817138672, 66.270065307617188)])
117    
118            self.assertFloatSeqEqual(layer.ShapesBoundingBox([32, 33]),
119                                     [-22.248506546020508, 66.270065307617188,
120                                      -15.026350021362305, 66.30645751953125])
121    
122            self.assertEquals(layer.ShapesBoundingBox([]), None)
123            self.assertEquals(layer.ShapesBoundingBox(None), None)
124    
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",          layer = self.layer = Layer("Test Layer",
128                        os.path.join("..", "Data", "iceland", "political.shp"))                                     self.open_shapefile("political.shp"))
         self.assertEquals(layer.Title(), "Test Layer")  
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 76  class TestLayer(unittest.TestCase, suppo Line 142  class TestLayer(unittest.TestCase, suppo
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                        os.path.join("..", "Data", "iceland",                             self.open_shapefile("cultural_landmark-point.shp"))
                                    "cultural_landmark-point.shp"))  
         self.assertEquals(layer.Title(), "Test Layer")  
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 104  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", shapefilename)          layer = self.layer = Layer("Empty Layer",
172                                       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)
176    
177        def test_get_field_type(self):
178            """Test Layer.GetFieldType()"""
179            layer = self.layer = Layer("Test Layer",
180                                       self.open_shapefile("roads-line.shp"))
181            self.assertEquals(layer.GetFieldType("LENGTH"), FIELDTYPE_DOUBLE)
182            self.assertEquals(layer.GetFieldType("non existing"), None)
183    
184        def test_raster_layer(self):
185            filename = self.build_path("island.tif")
186            layer = RasterLayer("Test RasterLayer", filename)
187            self.assertEquals(layer.GetImageFilename(), filename)
188            self.assertFloatSeqEqual(layer.BoundingBox(),
189                                     [-24.5500000, 63.2833330,
190                                      -13.4916670, 66.5666670])
191            self.assertFloatSeqEqual(layer.LatLongBoundingBox(),
192                                     [-24.5500000, 63.2833330,
193                                      -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    
# Line 116  class TestLayerLegend(unittest.TestCase, Line 288  class TestLayerLegend(unittest.TestCase,
288      """      """
289    
290      def setUp(self):      def setUp(self):
291          """Clear the list of received messages and create a layer          """Clear the list of received messages and create a layer and a session
292    
293          The layer is bound to self.layer.          The layer is bound to self.layer and the session to self.session.
294          """          """
295          self.clear_messages()          self.clear_messages()
296            self.session = Session("Test session for %s" % self.__class__)
297            filename = os.path.join("..", "Data", "iceland", "political.shp")
298          self.layer = Layer("Test Layer",          self.layer = Layer("Test Layer",
299                             os.path.join("..", "Data", "iceland",                             self.session.OpenShapefile(filename))
                                         "political.shp"))  
300          self.layer.Subscribe(LAYER_LEGEND_CHANGED, self.subscribe_with_params,          self.layer.Subscribe(LAYER_LEGEND_CHANGED, self.subscribe_with_params,
301                               LAYER_LEGEND_CHANGED)                               LAYER_LEGEND_CHANGED)
302          self.layer.Subscribe(LAYER_VISIBILITY_CHANGED,          self.layer.Subscribe(LAYER_VISIBILITY_CHANGED,
# Line 134  class TestLayerLegend(unittest.TestCase, Line 307  class TestLayerLegend(unittest.TestCase,
307          """Clear the list of received messages and explictly destroy self.layer          """Clear the list of received messages and explictly destroy self.layer
308          """          """
309          self.layer.Destroy()          self.layer.Destroy()
310            self.layer = None
311            self.session.Destroy()
312            self.session = None
313          self.clear_messages()          self.clear_messages()
314    
315      def test_initial_settings(self):      def test_initial_settings(self):
316          """Test Layer's initial legend attributes"""          """Test Layer's initial legend attributes"""
317          # test default settings          # test default settings
318          self.failIf(self.layer.WasModified())          self.failIf(self.layer.WasModified())
319          self.assertEquals(self.layer.fill, None)          #self.assertEquals(self.layer.fill, None)
320          self.assertEquals(self.layer.stroke.hex(), "#000000")          #self.assertEquals(self.layer.stroke.hex(), "#000000")
321          self.assertEquals(self.layer.stroke_width, 1)          #self.assertEquals(self.layer.stroke_width, 1)
322          self.assertEquals(self.layer.Visible(), 1)          self.assertEquals(self.layer.Visible(), 1)
323          # no messages should have been produced          # no messages should have been produced
324          self.check_messages([])          self.check_messages([])
325    
     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())  
   
326      def test_visibility(self):      def test_visibility(self):
327          """Test Layer visibility"""          """Test Layer visibility"""
328          self.layer.SetVisible(0)          self.layer.SetVisible(0)
# Line 179  class TestLayerLegend(unittest.TestCase, Line 333  class TestLayerLegend(unittest.TestCase,
333          # the layer.          # the layer.
334          self.failIf(self.layer.WasModified())          self.failIf(self.layer.WasModified())
335    
336      def test_tree_info(self):      
337          """Test Layer.TreeInfo"""  #
338          self.assertEquals(self.layer.TreeInfo(),  # the tree info now contains Color objects which are difficult to test
339                            ("Layer 'Test Layer'",  #
340                             ['Shown',  #   def test_tree_info(self):
341                              'Shapes: 156',  #       """Test Layer.TreeInfo"""
342                              ('Extent (lat-lon):'  #       self.assertEquals(self.layer.TreeInfo(),
343                               ' (-24.5465, 63.2868, -13.4958, 66.5638)'),  #                         ("Layer 'Test Layer'",
344                              'Shapetype: Polygon',  #                          ['Shown',
345                              'Fill: None',  #                           'Shapes: 156',
346                              'Outline: (0.000, 0.000, 0.000)']))  #                           ('Extent (lat-lon):'
347    #                            ' (-24.5465, 63.2868, -13.4958, 66.5638)'),
348    #                           'Shapetype: Polygon',
349    #                           'Fill: None',
350    #                           'Outline: (0.000, 0.000, 0.000)']))
351    
352    
353  if __name__ == "__main__":  if __name__ == "__main__":
354      unittest.main()      support.run_tests()
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