/[thuban]/branches/WIP-pyshapelib-bramz/test/test_layer.py
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revision 331 by bh, Fri Sep 20 14:34:23 2002 UTC revision 1576 by bh, Mon Aug 11 12:08:26 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 20  import support Line 20  import support
20  support.initthuban()  support.initthuban()
21    
22  import shapelib  import shapelib
23    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    from Thuban.Model.data import 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.table import FIELDTYPE_DOUBLE, FIELDTYPE_STRING, MemoryTable
31    from Thuban.Model.proj import Projection
32    from Thuban.Model.data import DerivedShapeStore
33    from Thuban.Model.classification import Classification, ClassGroupSingleton, \
34         ClassGroupRange
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):
40    
41      """Test cases for different layer (shape) types"""      """Test cases for different layer (shape) types"""
42    
43      def assertFloatTuplesEqual(self, test, value):      def setUp(self):
44          """Assert equality of two lists of tuples of float"""          """Create a session self.session and initialize self.layer to None"""
45          for i in range(len(test)):          self.session = Session("Test session for %s" % self.__class__)
46              self.assertFloatSeqEqual(test[i], value[i])          self.layer = None
47    
48        def tearDown(self):
49            """Call the layer's Destroy method and set session and layer to None"""
50            self.session = None
51            if self.layer is not None:
52                self.layer.Destroy()
53                self.layer = None
54    
55        def build_path(self, filename):
56            return os.path.join("..", "Data", "iceland", filename)
57    
58        def open_shapefile(self, filename):
59            """Open and return a shapestore for filename in the iceland data set"""
60            return self.session.OpenShapefile(self.build_path(filename))
61    
62        def test_base_layer(self):
63            layer = self.layer = BaseLayer("Test BaseLayer")
64            self.assertEquals(layer.Title(), "Test BaseLayer")
65            self.failUnless(layer.Visible())
66    
67            # toggle visibility
68            layer.SetVisible(False)
69            self.failIf(layer.Visible())
70    
71            layer.SetVisible(True)
72            self.failUnless(layer.Visible())
73    
74            self.failIf(layer.HasClassification())
75            self.failIf(layer.HasShapes())
76    
77            self.assertEquals(layer.GetProjection(), None)
78    
79            # set/get projection
80            proj = Projection(["proj=utm", "zone=26"])
81    
82            layer.SetProjection(proj)
83            self.failUnless(layer.GetProjection() is proj)
84    
85            # __init__ with other arguments
86            layer = BaseLayer("Test BaseLayer", False, proj)
87            self.failIf(layer.Visible())
88            self.failUnless(layer.GetProjection() is proj)
89    
90      def test_arc_layer(self):      def test_arc_layer(self):
91          """Test Layer with arc shapes"""          """Test Layer with arc shapes"""
92          layer = Layer("Test Layer",          layer = self.layer = Layer("Test Layer",
93                        os.path.join("..", "Data", "iceland", "roads-line.shp"))                                     self.open_shapefile("roads-line.shp"))
94          self.assertEquals(layer.Title(), "Test Layer")          self.failUnless(layer.HasClassification())
95            self.failUnless(layer.HasShapes())
96          self.assertEquals(layer.ShapeType(), SHAPETYPE_ARC)          self.assertEquals(layer.ShapeType(), SHAPETYPE_ARC)
97          self.assertEquals(layer.NumShapes(), 839)          self.assertEquals(layer.NumShapes(), 839)
98          shape = layer.Shape(32)          shape = layer.Shape(32)
99          self.assertFloatTuplesEqual(shape.Points(),          self.assertPointListEquals(shape.Points(),
100                                      [(-15.082174301147461, 66.27738189697265),                                     [[(-15.082174301147461, 66.27738189697265),
101                                       (-15.026350021362305, 66.27339172363281)])                                       (-15.026350021362305, 66.27339172363281)]])
102          self.assertFloatSeqEqual(layer.BoundingBox(),          self.assertFloatSeqEqual(layer.BoundingBox(),
103                                   [-24.450359344482422, 63.426830291748047,                                   [-24.450359344482422, 63.426830291748047,
104                                    -13.55668830871582, 66.520111083984375])                                    -13.55668830871582, 66.520111083984375])
105          self.assertEquals(layer.ShapesInRegion((-24.0, 64.0, -23.75, 64.25)),          self.assertEquals(layer.ShapesInRegion((-24.0, 64.0, -23.75, 64.25)),
106                            [613, 726, 838])                            [613, 726, 838])
107    
108            self.assertFloatSeqEqual(layer.ShapesBoundingBox([32]),
109                              [-15.082174301147461, 66.27339172363281,
110                               -15.026350021362305, 66.27738189697265])
111    
112            shape = layer.Shape(33)
113            self.assertPointListEquals(shape.Points(),
114                                       [[(-22.24850654602050, 66.30645751953125),
115                                         (-22.23273086547851, 66.29407501220703),
116                                         (-22.23158073425293,  66.2876892089843),
117                                         (-22.24631881713867, 66.27006530761718)]])
118    
119            self.assertFloatSeqEqual(layer.ShapesBoundingBox([32, 33]),
120                                     [-22.248506546020508, 66.270065307617188,
121                                      -15.026350021362305, 66.30645751953125])
122    
123            self.assertEquals(layer.ShapesBoundingBox([]), None)
124            self.assertEquals(layer.ShapesBoundingBox(None), None)
125    
126      def test_polygon_layer(self):      def test_polygon_layer(self):
127          """Test Layer with polygon shapes"""          """Test Layer with polygon shapes"""
128          layer = Layer("Test Layer",          layer = self.layer = Layer("Test Layer",
129                        os.path.join("..", "Data", "iceland", "political.shp"))                                     self.open_shapefile("political.shp"))
130          self.assertEquals(layer.Title(), "Test Layer")          self.failUnless(layer.HasClassification())
131            self.failUnless(layer.HasShapes())
132          self.assertEquals(layer.ShapeType(), SHAPETYPE_POLYGON)          self.assertEquals(layer.ShapeType(), SHAPETYPE_POLYGON)
133          self.assertEquals(layer.NumShapes(), 156)          self.assertEquals(layer.NumShapes(), 156)
134          shape = layer.Shape(4)          shape = layer.Shape(4)
135          self.assertFloatTuplesEqual(shape.Points(),          self.assertPointListEquals(shape.Points(),
136                                      [(-22.406391143798828, 64.714111328125),                                     [[(-22.40639114379882, 64.714111328125),
137                                       (-22.41621208190918, 64.71600341796875),                                       (-22.41621208190918, 64.7160034179687),
138                                       (-22.406051635742188, 64.719200134277344),                                       (-22.40605163574218, 64.719200134277),
139                                       (-22.406391143798828, 64.714111328125)])                                       (-22.40639114379882, 64.714111328125)]])
140          self.assertFloatSeqEqual(layer.BoundingBox(),          self.assertFloatSeqEqual(layer.BoundingBox(),
141                                   [-24.546524047851562, 63.286754608154297,                                   [-24.546524047851562, 63.286754608154297,
142                                    -13.495815277099609, 66.563774108886719])                                    -13.495815277099609, 66.563774108886719])
# Line 75  class TestLayer(unittest.TestCase, suppo Line 145  class TestLayer(unittest.TestCase, suppo
145    
146      def test_point_layer(self):      def test_point_layer(self):
147          """Test Layer with point shapes"""          """Test Layer with point shapes"""
148          layer = Layer("Test Layer",          layer = self.layer = Layer("Test Layer",
149                        os.path.join("..", "Data", "iceland",                             self.open_shapefile("cultural_landmark-point.shp"))
150                                     "cultural_landmark-point.shp"))          self.failUnless(layer.HasClassification())
151          self.assertEquals(layer.Title(), "Test Layer")          self.failUnless(layer.HasShapes())
152          self.assertEquals(layer.ShapeType(), SHAPETYPE_POINT)          self.assertEquals(layer.ShapeType(), SHAPETYPE_POINT)
153          self.assertEquals(layer.NumShapes(), 34)          self.assertEquals(layer.NumShapes(), 34)
154          shape = layer.Shape(0)          shape = layer.Shape(0)
155          self.assertFloatTuplesEqual(shape.Points(),          self.assertPointListEquals(shape.Points(),
156                                      [(-22.711074829101562, 66.36572265625)])                                     [[(-22.711074829101562, 66.36572265625)]])
157          self.assertFloatSeqEqual(layer.BoundingBox(),          self.assertFloatSeqEqual(layer.BoundingBox(),
158                                   [-23.806047439575195, 63.405960083007812,                                   [-23.806047439575195, 63.405960083007812,
159                                    -15.12291431427002, 66.36572265625])                                    -15.12291431427002, 66.36572265625])
# Line 96  class TestLayer(unittest.TestCase, suppo Line 166  class TestLayer(unittest.TestCase, suppo
166          shapefilename = self.temp_file_name("layer_empty.shp")          shapefilename = self.temp_file_name("layer_empty.shp")
167          shp = shapelib.create(shapefilename, shapelib.SHPT_POLYGON)          shp = shapelib.create(shapefilename, shapelib.SHPT_POLYGON)
168          shp.close()          shp.close()
169            # create an empty DBF file too because Thuban can't cope yet
170          layer = Layer("Empty Layer", shapefilename)          # with missing DBF file.
171            dbffilename = self.temp_file_name("layer_empty.dbf")
172            dbf = dbflib.create(dbffilename)
173            dbf.add_field("NAME", dbflib.FTString, 20, 0)
174    
175            # Now try to open it.
176            layer = self.layer = Layer("Empty Layer",
177                                       self.session.OpenShapefile(shapefilename))
178          self.assertEquals(layer.BoundingBox(), None)          self.assertEquals(layer.BoundingBox(), None)
179          self.assertEquals(layer.LatLongBoundingBox(), None)          self.assertEquals(layer.LatLongBoundingBox(), None)
180          self.assertEquals(layer.NumShapes(), 0)          self.assertEquals(layer.NumShapes(), 0)
181    
182        def test_get_field_type(self):
183            """Test Layer.GetFieldType()"""
184            layer = self.layer = Layer("Test Layer",
185                                       self.open_shapefile("roads-line.shp"))
186            self.assertEquals(layer.GetFieldType("LENGTH"), FIELDTYPE_DOUBLE)
187            self.assertEquals(layer.GetFieldType("non existing"), None)
188    
189        def test_raster_layer(self):
190            if not Thuban.Model.resource.has_gdal_support():
191                raise support.SkipTest("No gdal support")
192    
193            filename = self.build_path("island.tif")
194            layer = RasterLayer("Test RasterLayer", filename)
195            self.failIf(layer.HasClassification())
196            self.failIf(layer.HasShapes())
197            self.assertEquals(layer.GetImageFilename(), filename)
198            self.assertFloatSeqEqual(layer.BoundingBox(),
199                                     [-24.5500000, 63.2833330,
200                                      -13.4916670, 66.5666670])
201            self.assertFloatSeqEqual(layer.LatLongBoundingBox(),
202                                     [-24.5500000, 63.2833330,
203                                      -13.4916670, 66.5666670])
204    
205        def test_derived_store(self):
206            """Test layer with derived store"""
207            layer = self.layer = Layer("Test Layer",
208                                       self.open_shapefile("roads-line.shp"))
209            try:
210                store = layer.ShapeStore()
211                derived = DerivedShapeStore(store, store.Table())
212                layer.SetShapeStore(derived)
213                self.assert_(layer.ShapeStore() is derived)
214    
215                self.assertEquals(layer.ShapeType(), SHAPETYPE_ARC)
216                self.assertEquals(layer.NumShapes(), 839)
217                shape = layer.Shape(32)
218                self.assertPointListEquals(shape.Points(),
219                                           [[(-15.082174301147, 66.277381896972),
220                                             (-15.026350021362, 66.273391723632)]])
221                self.assertFloatSeqEqual(layer.BoundingBox(),
222                                         [-24.450359344482422, 63.426830291748047,
223                                          -13.55668830871582, 66.520111083984375])
224                self.assertEquals(layer.ShapesInRegion((-24.0, 64.0,
225                                                        -23.75, 64.25)),
226                                  [613, 726, 838])
227    
228                self.assertFloatSeqEqual(layer.ShapesBoundingBox([32]),
229                                         [-15.082174301147461, 66.27339172363281,
230                                          -15.026350021362305, 66.27738189697265])
231    
232            finally:
233                store = derived = None
234    
235    
236    class SetShapeStoreTests(unittest.TestCase, support.SubscriberMixin):
237    
238        def setUp(self):
239            """Create a layer with a classification as self.layer"""
240            self.clear_messages()
241            self.session = Session("Test session for %s" % self.__class__)
242            self.shapefilename = os.path.join("..", "Data", "iceland",
243                                              "cultural_landmark-point.dbf")
244            self.store = self.session.OpenShapefile(self.shapefilename)
245            self.layer = Layer("test layer", self.store)
246            self.classification = Classification()
247            self.classification.AppendGroup(ClassGroupSingleton("FARM"))
248            self.layer.SetClassificationColumn("CLPTLABEL")
249            self.layer.SetClassification(self.classification)
250            self.layer.UnsetModified()
251            self.layer.Subscribe(LAYER_SHAPESTORE_REPLACED,
252                                 self.subscribe_with_params,
253                                 LAYER_SHAPESTORE_REPLACED)
254            self.layer.Subscribe(LAYER_CHANGED,
255                                 self.subscribe_with_params, LAYER_CHANGED)
256    
257        def tearDown(self):
258            self.clear_messages()
259            self.layer.Destroy()
260            self.session.Destroy()
261            self.session = self.layer = self.store = self.classification = None
262    
263        def test_sanity(self):
264            """SetShapeStoreTests sanity check
265    
266            Test the initial state of the test case instances after setUp.
267            """
268            cls = self.layer.GetClassification()
269            self.assert_(cls is self.classification)
270            field = self.layer.GetClassificationColumn()
271            self.assertEquals(field, "CLPTLABEL")
272            self.assertEquals(self.layer.GetFieldType(field), FIELDTYPE_STRING)
273            self.assertEquals(self.layer.GetClassification().GetNumGroups(), 1)
274            self.failIf(self.layer.WasModified())
275    
276        def test_set_shape_store_modified_flag(self):
277            """Test whether Layer.SetShapeStore() sets the modified flag"""
278            memtable = MemoryTable([("FOO", FIELDTYPE_STRING)],
279                          [("bla",)] * self.layer.ShapeStore().Table().NumRows())
280            self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable))
281    
282            self.assert_(self.layer.WasModified())
283    
284        def test_set_shape_store_different_field_name(self):
285            """Test Layer.SetShapeStore() with different column name"""
286            memtable = MemoryTable([("FOO", FIELDTYPE_STRING)],
287                          [("bla",)] * self.layer.ShapeStore().Table().NumRows())
288            self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable))
289            # The classification should contain only the default group now.
290            self.assertEquals(self.layer.GetClassification().GetNumGroups(), 0)
291            self.check_messages([(self.layer, LAYER_CHANGED),
292                                 (self.layer, LAYER_SHAPESTORE_REPLACED)])
293    
294        def test_set_shape_store_same_field(self):
295            """Test Layer.SetShapeStore() with same column name and type"""
296            memtable = MemoryTable([("CLPTLABEL", FIELDTYPE_STRING)],
297                          [("bla",)] * self.layer.ShapeStore().Table().NumRows())
298            self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable))
299            # The classification should be the same as before
300            self.assert_(self.layer.GetClassification() is self.classification)
301            self.check_messages([(self.layer, LAYER_SHAPESTORE_REPLACED)])
302    
303  class TestLayerLegend(unittest.TestCase, support.SubscriberMixin):      def test_set_shape_store_same_field_different_type(self):
304            """Test Layer.SetShapeStore() with same column name but different type
305            """
306            memtable = MemoryTable([("CLPTLABEL", FIELDTYPE_DOUBLE)],
307                          [(0.0,)] * self.layer.ShapeStore().Table().NumRows())
308            self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable))
309            # The classification should contain only the default group now.
310            self.assertEquals(self.layer.GetClassification().GetNumGroups(), 0)
311            self.check_messages([(self.layer, LAYER_CHANGED),
312                                 (self.layer, LAYER_SHAPESTORE_REPLACED)])
313    
314    
315    class TestLayerModification(unittest.TestCase, support.SubscriberMixin):
316    
317      """Test cases for Layer method that modify the layer.      """Test cases for Layer method that modify the layer.
318      """      """
319    
320      def setUp(self):      def setUp(self):
321          """Clear the list of received messages and create a layer          """Clear the list of received messages and create a layer and a session
322    
323          The layer is bound to self.layer.          The layer is bound to self.layer and the session to self.session.
324          """          """
325          self.clear_messages()          self.clear_messages()
326            self.session = Session("Test session for %s" % self.__class__)
327            filename = os.path.join("..", "Data", "iceland", "political.shp")
328          self.layer = Layer("Test Layer",          self.layer = Layer("Test Layer",
329                             os.path.join("..", "Data", "iceland",                             self.session.OpenShapefile(filename))
                                         "political.shp"))  
330          self.layer.Subscribe(LAYER_LEGEND_CHANGED, self.subscribe_with_params,          self.layer.Subscribe(LAYER_LEGEND_CHANGED, self.subscribe_with_params,
331                               LAYER_LEGEND_CHANGED)                               LAYER_LEGEND_CHANGED)
332          self.layer.Subscribe(LAYER_VISIBILITY_CHANGED,          self.layer.Subscribe(LAYER_VISIBILITY_CHANGED,
333                               self.subscribe_with_params,                               self.subscribe_with_params,
334                               LAYER_VISIBILITY_CHANGED)                               LAYER_VISIBILITY_CHANGED)
335            self.layer.Subscribe(LAYER_CHANGED, self.subscribe_with_params,
336                                 LAYER_CHANGED)
337    
338      def tearDown(self):      def tearDown(self):
339          """Clear the list of received messages and explictly destroy self.layer          """Clear the list of received messages and explictly destroy self.layer
340          """          """
341          self.layer.Destroy()          self.layer.Destroy()
342            self.layer = None
343            self.session.Destroy()
344            self.session = None
345          self.clear_messages()          self.clear_messages()
346    
347      def test_initial_settings(self):      def test_sanity(self):
348          """Test Layer's initial legend attributes"""          """TestLayerModification Sanity Checks"""
349          # test default settings          # test default settings
350          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)  
351          self.assertEquals(self.layer.Visible(), 1)          self.assertEquals(self.layer.Visible(), 1)
352          # no messages should have been produced          # no messages should have been produced
353          self.check_messages([])          self.check_messages([])
354    
     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())  
   
355      def test_visibility(self):      def test_visibility(self):
356          """Test Layer visibility"""          """Test Layer visibility"""
357          self.layer.SetVisible(0)          self.layer.SetVisible(0)
# Line 172  class TestLayerLegend(unittest.TestCase, Line 362  class TestLayerLegend(unittest.TestCase,
362          # the layer.          # the layer.
363          self.failIf(self.layer.WasModified())          self.failIf(self.layer.WasModified())
364    
365      def test_tree_info(self):      def test_set_classification(self):
366          """Test Layer.TreeInfo"""          """Test Layer.SetClassification"""
367          self.assertEquals(self.layer.TreeInfo(),          classification = Classification()
368                            ("Layer 'Test Layer'",          classification.AppendGroup(ClassGroupRange((0.0, 0.1)))
369                             ['Shown',  
370                              'Shapes: 156',          self.layer.SetClassification(classification)
371                              ('Extent (lat-lon):'          self.layer.SetClassificationColumn("AREA")
372                               ' (-24.5465, 63.2868, -13.4958, 66.5638)'),  
373                              'Shapetype: Polygon',          self.check_messages([(self.layer, LAYER_CHANGED),
374                              'Fill: None',                               (self.layer, LAYER_CHANGED)])
375                              'Outline: (0.000, 0.000, 0.000)']))          self.failUnless(self.layer.WasModified())
376    
377            self.clear_messages()
378            self.layer.UnsetModified()
379    
380            # change only the classification column. This should issue a
381            # LAYER_CHANGED message as well.
382            self.layer.SetClassificationColumn("PERIMETER")
383    
384            self.check_messages([(self.layer, LAYER_CHANGED)])
385            self.failUnless(self.layer.WasModified())
386    
387    
388    #
389    # the tree info now contains Color objects which are difficult to test
390    #
391    #   def test_tree_info(self):
392    #       """Test Layer.TreeInfo"""
393    #       self.assertEquals(self.layer.TreeInfo(),
394    #                         ("Layer 'Test Layer'",
395    #                          ['Shown',
396    #                           'Shapes: 156',
397    #                           ('Extent (lat-lon):'
398    #                            ' (-24.5465, 63.2868, -13.4958, 66.5638)'),
399    #                           'Shapetype: Polygon',
400    #                           'Fill: None',
401    #                           'Outline: (0.000, 0.000, 0.000)']))
402    
403    
404  if __name__ == "__main__":  if __name__ == "__main__":
405      unittest.main()      support.run_tests()
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