/[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 1687 by bh, Fri Aug 29 10:02:16 2003 UTC
# Line 16  __version__ = "$Revision$" Line 16  __version__ = "$Revision$"
16  import os  import os
17  import unittest  import unittest
18    
19    import mockgeo
20  import support  import support
21  support.initthuban()  support.initthuban()
22    
# Line 23  import shapelib Line 24  import shapelib
24  import dbflib  import dbflib
25    
26  from Thuban.Model.session import Session  from Thuban.Model.session import Session
27  from Thuban.Model.layer import BaseLayer, Layer, RasterLayer, \  from Thuban.Model.layer import BaseLayer, Layer, RasterLayer
28       SHAPETYPE_POLYGON, SHAPETYPE_ARC, SHAPETYPE_POINT  from Thuban.Model.data import SHAPETYPE_POLYGON, SHAPETYPE_ARC, SHAPETYPE_POINT
29  from Thuban.Model.messages import LAYER_LEGEND_CHANGED, \  from Thuban.Model.messages import LAYER_LEGEND_CHANGED, \
30       LAYER_VISIBILITY_CHANGED       LAYER_VISIBILITY_CHANGED, LAYER_SHAPESTORE_REPLACED, LAYER_CHANGED
31  from Thuban.Model.color import Color  from Thuban.Model.table import FIELDTYPE_DOUBLE, FIELDTYPE_STRING, MemoryTable
 from Thuban.Model.table import FIELDTYPE_DOUBLE  
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         ClassGroupRange
36    
37    import Thuban.Model.resource
38    
39  class TestLayer(unittest.TestCase, support.FileTestMixin,  class TestLayer(unittest.TestCase, support.FileTestMixin,
40                  support.FloatComparisonMixin):                  support.FloatComparisonMixin):
41    
42      """Test cases for different layer (shape) types"""      """Test cases for different layer (shape) types"""
43    
     def assertFloatTuplesEqual(self, test, value):  
         """Assert equality of two lists of tuples of float"""  
         for i in range(len(test)):  
             self.assertFloatSeqEqual(test[i], value[i])  
   
44      def setUp(self):      def setUp(self):
45          """Create a session"""          """Create a session self.session and initialize self.layer to None"""
46          self.session = Session("Test session for %s" % self.__class__)          self.session = Session("Test session for %s" % self.__class__)
47            self.layer = None
48    
49      def tearDown(self):      def tearDown(self):
50            """Call the layer's Destroy method and set session and layer to None"""
51            self.session.Destroy()
52          self.session = None          self.session = None
53            if self.layer is not None:
54                self.layer.Destroy()
55                self.layer = None
56    
57      def build_path(self, filename):      def build_path(self, filename):
58          return os.path.join("..", "Data", "iceland", filename)          return os.path.join("..", "Data", "iceland", filename)
59            
60      def open_shapefile(self, filename):      def open_shapefile(self, filename):
61          """Open and return a shapestore for filename in the iceland data set"""          """Open and return a shapestore for filename in the iceland data set"""
62          return self.session.OpenShapefile(self.build_path(filename))          return self.session.OpenShapefile(self.build_path(filename))
63    
64      def test_base_layer(self):      def test_base_layer(self):
65          layer = BaseLayer("Test BaseLayer")          layer = self.layer = BaseLayer("Test BaseLayer")
66          self.assertEquals(layer.Title(), "Test BaseLayer")          self.assertEquals(layer.Title(), "Test BaseLayer")
67          self.failUnless(layer.Visible())          self.failUnless(layer.Visible())
68    
# Line 68  class TestLayer(unittest.TestCase, suppo Line 74  class TestLayer(unittest.TestCase, suppo
74          self.failUnless(layer.Visible())          self.failUnless(layer.Visible())
75    
76          self.failIf(layer.HasClassification())          self.failIf(layer.HasClassification())
77            self.failIf(layer.HasShapes())
78    
79          self.assertEquals(layer.GetProjection(), None)          self.assertEquals(layer.GetProjection(), None)
80    
81          # set/get projection          # set/get projection
82          proj = Projection(["proj=utm", "zone=26"])          proj = Projection(["proj=utm", "zone=26", "ellps=clrk66"])
83    
84          layer.SetProjection(proj)          layer.SetProjection(proj)
85          self.failUnless(layer.GetProjection() is proj)          self.failUnless(layer.GetProjection() is proj)
# Line 83  class TestLayer(unittest.TestCase, suppo Line 91  class TestLayer(unittest.TestCase, suppo
91    
92      def test_arc_layer(self):      def test_arc_layer(self):
93          """Test Layer with arc shapes"""          """Test Layer with arc shapes"""
94          layer = Layer("Test Layer", self.open_shapefile("roads-line.shp"))          layer = self.layer = Layer("Test Layer",
95                                       self.open_shapefile("roads-line.shp"))
96            self.failUnless(layer.HasClassification())
97            self.failUnless(layer.HasShapes())
98          self.assertEquals(layer.ShapeType(), SHAPETYPE_ARC)          self.assertEquals(layer.ShapeType(), SHAPETYPE_ARC)
99          self.assertEquals(layer.NumShapes(), 839)          self.assertEquals(layer.NumShapes(), 839)
100          shape = layer.Shape(32)          shape = layer.Shape(32)
101          self.assertFloatTuplesEqual(shape.Points(),          self.assertPointListEquals(shape.Points(),
102                                      [(-15.082174301147461, 66.27738189697265),                                     [[(-15.082174301147461, 66.27738189697265),
103                                       (-15.026350021362305, 66.27339172363281)])                                       (-15.026350021362305, 66.27339172363281)]])
104          self.assertFloatSeqEqual(layer.BoundingBox(),          self.assertFloatSeqEqual(layer.BoundingBox(),
105                                   [-24.450359344482422, 63.426830291748047,                                   [-24.450359344482422, 63.426830291748047,
106                                    -13.55668830871582, 66.520111083984375])                                    -13.55668830871582, 66.520111083984375])
107          self.assertEquals(layer.ShapesInRegion((-24.0, 64.0, -23.75, 64.25)),          shapes = layer.ShapesInRegion((-24.0, 64.0, -23.75, 64.25))
108            self.assertEquals([s.ShapeID() for s in shapes],
109                            [613, 726, 838])                            [613, 726, 838])
110    
111          self.assertFloatSeqEqual(layer.ShapesBoundingBox([32]),          self.assertFloatSeqEqual(layer.ShapesBoundingBox([32]),
# Line 101  class TestLayer(unittest.TestCase, suppo Line 113  class TestLayer(unittest.TestCase, suppo
113                             -15.026350021362305, 66.27738189697265])                             -15.026350021362305, 66.27738189697265])
114    
115          shape = layer.Shape(33)          shape = layer.Shape(33)
116          self.assertFloatTuplesEqual(shape.Points(),          self.assertPointListEquals(shape.Points(),
117                                      [(-22.248506546020508, 66.30645751953125),                                     [[(-22.24850654602050, 66.30645751953125),
118                                       (-22.232730865478516, 66.294075012207031),                                       (-22.23273086547851, 66.29407501220703),
119                                       (-22.23158073425293,  66.287689208984375),                                       (-22.23158073425293,  66.2876892089843),
120                                       (-22.246318817138672, 66.270065307617188)])                                       (-22.24631881713867, 66.27006530761718)]])
121    
122          self.assertFloatSeqEqual(layer.ShapesBoundingBox([32, 33]),          self.assertFloatSeqEqual(layer.ShapesBoundingBox([32, 33]),
123                                   [-22.248506546020508, 66.270065307617188,                                   [-22.248506546020508, 66.270065307617188,
# Line 114  class TestLayer(unittest.TestCase, suppo Line 126  class TestLayer(unittest.TestCase, suppo
126          self.assertEquals(layer.ShapesBoundingBox([]), None)          self.assertEquals(layer.ShapesBoundingBox([]), None)
127          self.assertEquals(layer.ShapesBoundingBox(None), None)          self.assertEquals(layer.ShapesBoundingBox(None), None)
128    
         layer.Destroy()  
   
129      def test_polygon_layer(self):      def test_polygon_layer(self):
130          """Test Layer with polygon shapes"""          """Test Layer with polygon shapes"""
131          layer = Layer("Test Layer", self.open_shapefile("political.shp"))          layer = self.layer = Layer("Test Layer",
132                                       self.open_shapefile("political.shp"))
133            self.failUnless(layer.HasClassification())
134            self.failUnless(layer.HasShapes())
135          self.assertEquals(layer.ShapeType(), SHAPETYPE_POLYGON)          self.assertEquals(layer.ShapeType(), SHAPETYPE_POLYGON)
136          self.assertEquals(layer.NumShapes(), 156)          self.assertEquals(layer.NumShapes(), 156)
137          shape = layer.Shape(4)          shape = layer.Shape(4)
138          self.assertFloatTuplesEqual(shape.Points(),          self.assertPointListEquals(shape.Points(),
139                                      [(-22.406391143798828, 64.714111328125),                                     [[(-22.40639114379882, 64.714111328125),
140                                       (-22.41621208190918, 64.71600341796875),                                       (-22.41621208190918, 64.7160034179687),
141                                       (-22.406051635742188, 64.719200134277344),                                       (-22.40605163574218, 64.719200134277),
142                                       (-22.406391143798828, 64.714111328125)])                                       (-22.40639114379882, 64.714111328125)]])
143          self.assertFloatSeqEqual(layer.BoundingBox(),          self.assertFloatSeqEqual(layer.BoundingBox(),
144                                   [-24.546524047851562, 63.286754608154297,                                   [-24.546524047851562, 63.286754608154297,
145                                    -13.495815277099609, 66.563774108886719])                                    -13.495815277099609, 66.563774108886719])
146          self.assertEquals(layer.ShapesInRegion((-24.0, 64.0, -23.9, 64.1)),          shapes = layer.ShapesInRegion((-24.0, 64.0, -23.9, 64.1))
147            self.assertEquals([s.ShapeID() for s in shapes],
148                            [91, 92, 144, 146, 148, 150, 152, 153])                            [91, 92, 144, 146, 148, 150, 152, 153])
         layer.Destroy()  
149    
150      def test_point_layer(self):      def test_point_layer(self):
151          """Test Layer with point shapes"""          """Test Layer with point shapes"""
152          layer = Layer("Test Layer",          layer = self.layer = Layer("Test Layer",
153                        self.open_shapefile("cultural_landmark-point.shp"))                             self.open_shapefile("cultural_landmark-point.shp"))
154            self.failUnless(layer.HasClassification())
155            self.failUnless(layer.HasShapes())
156          self.assertEquals(layer.ShapeType(), SHAPETYPE_POINT)          self.assertEquals(layer.ShapeType(), SHAPETYPE_POINT)
157          self.assertEquals(layer.NumShapes(), 34)          self.assertEquals(layer.NumShapes(), 34)
158          shape = layer.Shape(0)          shape = layer.Shape(0)
159          self.assertFloatTuplesEqual(shape.Points(),          self.assertPointListEquals(shape.Points(),
160                                      [(-22.711074829101562, 66.36572265625)])                                     [[(-22.711074829101562, 66.36572265625)]])
161          self.assertFloatSeqEqual(layer.BoundingBox(),          self.assertFloatSeqEqual(layer.BoundingBox(),
162                                   [-23.806047439575195, 63.405960083007812,                                   [-23.806047439575195, 63.405960083007812,
163                                    -15.12291431427002, 66.36572265625])                                    -15.12291431427002, 66.36572265625])
164          self.assertEquals(layer.ShapesInRegion((-24.0, 64.0, -23.80, 64.1)),          shapes = layer.ShapesInRegion((-24.0, 64.0, -23.80, 64.1))
165            self.assertEquals([s.ShapeID() for s in shapes],
166                            [0, 1, 2, 3, 4, 5, 27, 28, 29, 30, 31])                            [0, 1, 2, 3, 4, 5, 27, 28, 29, 30, 31])
167          layer.Destroy()  
168        def test_point_layer_with_projection(self):
169            """Test Layer with point shapes and a projection"""
170            # We use mock data here so that we have precise control over the
171            # values
172            table = MemoryTable([("FOO", FIELDTYPE_STRING)], [("bla",)])
173            store = mockgeo.SimpleShapeStore(SHAPETYPE_POINT, [[[(10,10)]]], table)
174            layer = self.layer = Layer("Test Layer", store)
175    
176            # Rotation by 45 degrees counter clockwise. This detects a bug
177            # in the ShapesInRegion method which transforms the bounding box
178            # by only transforming two opposite corners because they have
179            # the same x or y coordinates after application of the
180            # projection or its inverse.
181            proj = mockgeo.AffineProjection((1, 1, -1, 1, 0, 0))
182            layer.SetProjection(proj)
183    
184            self.assertEquals(layer.BoundingBox(), (10, 10, 10, 10))
185            self.assertEquals(layer.LatLongBoundingBox(), (10.0, 0.0, 10.0, 0.0))
186            shapes = layer.ShapesInRegion((0, 0, 20, 20))
187            self.assertEquals([s.ShapeID() for s in shapes], [0])
188    
189      def test_empty_layer(self):      def test_empty_layer(self):
190          """Test Layer with empty shape file"""          """Test Layer with empty shape file"""
# Line 163  class TestLayer(unittest.TestCase, suppo Line 199  class TestLayer(unittest.TestCase, suppo
199          dbf.add_field("NAME", dbflib.FTString, 20, 0)          dbf.add_field("NAME", dbflib.FTString, 20, 0)
200    
201          # Now try to open it.          # Now try to open it.
202          layer = Layer("Empty Layer",          layer = self.layer = Layer("Empty Layer",
203                        self.session.OpenShapefile(shapefilename))                                     self.session.OpenShapefile(shapefilename))
204          self.assertEquals(layer.BoundingBox(), None)          self.assertEquals(layer.BoundingBox(), None)
205          self.assertEquals(layer.LatLongBoundingBox(), None)          self.assertEquals(layer.LatLongBoundingBox(), None)
206          self.assertEquals(layer.NumShapes(), 0)          self.assertEquals(layer.NumShapes(), 0)
         layer.Destroy()  
207    
208      def test_get_field_type(self):      def test_get_field_type(self):
209          """Test Layer.GetFieldType()"""          """Test Layer.GetFieldType()"""
210          layer = Layer("Test Layer", self.open_shapefile("roads-line.shp"))          layer = self.layer = Layer("Test Layer",
211                                       self.open_shapefile("roads-line.shp"))
212          self.assertEquals(layer.GetFieldType("LENGTH"), FIELDTYPE_DOUBLE)          self.assertEquals(layer.GetFieldType("LENGTH"), FIELDTYPE_DOUBLE)
213          self.assertEquals(layer.GetFieldType("non existing"), None)          self.assertEquals(layer.GetFieldType("non existing"), None)
         layer.Destroy()  
214    
215      def test_raster_layer(self):      def test_raster_layer(self):
216            if not Thuban.Model.resource.has_gdal_support():
217                raise support.SkipTest("No gdal support")
218    
219          filename = self.build_path("island.tif")          filename = self.build_path("island.tif")
220          layer = RasterLayer("Test RasterLayer", filename)          layer = RasterLayer("Test RasterLayer", filename)
221          self.assertEquals(layer.GetImageFilename(), filename)          self.failIf(layer.HasClassification())
222            self.failIf(layer.HasShapes())
223            self.assertEquals(layer.GetImageFilename(), os.path.abspath(filename))
224          self.assertFloatSeqEqual(layer.BoundingBox(),          self.assertFloatSeqEqual(layer.BoundingBox(),
225                                   [-24.5500000, 63.2833330,                                   [-24.5500000, 63.2833330,
226                                    -13.4916670, 66.5666670])                                    -13.4916670, 66.5666670])
# Line 188  class TestLayer(unittest.TestCase, suppo Line 228  class TestLayer(unittest.TestCase, suppo
228                                   [-24.5500000, 63.2833330,                                   [-24.5500000, 63.2833330,
229                                    -13.4916670, 66.5666670])                                    -13.4916670, 66.5666670])
230    
231        def test_derived_store(self):
232            """Test layer with derived store"""
233            layer = self.layer = Layer("Test Layer",
234                                       self.open_shapefile("roads-line.shp"))
235            try:
236                store = layer.ShapeStore()
237                derived = DerivedShapeStore(store, store.Table())
238                layer.SetShapeStore(derived)
239                self.assert_(layer.ShapeStore() is derived)
240    
241                self.assertEquals(layer.ShapeType(), SHAPETYPE_ARC)
242                self.assertEquals(layer.NumShapes(), 839)
243                shape = layer.Shape(32)
244                self.assertPointListEquals(shape.Points(),
245                                           [[(-15.082174301147, 66.277381896972),
246                                             (-15.026350021362, 66.273391723632)]])
247                self.assertFloatSeqEqual(layer.BoundingBox(),
248                                         [-24.450359344482422, 63.426830291748047,
249                                          -13.55668830871582, 66.520111083984375])
250                shapes = layer.ShapesInRegion((-24.0, 64.0, -23.75, 64.25))
251                self.assertEquals([s.ShapeID() for s in shapes],
252                                  [613, 726, 838])
253    
254                self.assertFloatSeqEqual(layer.ShapesBoundingBox([32]),
255                                         [-15.082174301147461, 66.27339172363281,
256                                          -15.026350021362305, 66.27738189697265])
257    
258            finally:
259                store = derived = None
260    
261    
262    class SetShapeStoreTests(unittest.TestCase, support.SubscriberMixin):
263    
264  class TestLayerLegend(unittest.TestCase, support.SubscriberMixin):      def setUp(self):
265            """Create a layer with a classification as self.layer"""
266            self.clear_messages()
267            self.session = Session("Test session for %s" % self.__class__)
268            self.shapefilename = os.path.join("..", "Data", "iceland",
269                                              "cultural_landmark-point.dbf")
270            self.store = self.session.OpenShapefile(self.shapefilename)
271            self.layer = Layer("test layer", self.store)
272            self.classification = Classification()
273            self.classification.AppendGroup(ClassGroupSingleton("FARM"))
274            self.layer.SetClassificationColumn("CLPTLABEL")
275            self.layer.SetClassification(self.classification)
276            self.layer.UnsetModified()
277            self.layer.Subscribe(LAYER_SHAPESTORE_REPLACED,
278                                 self.subscribe_with_params,
279                                 LAYER_SHAPESTORE_REPLACED)
280            self.layer.Subscribe(LAYER_CHANGED,
281                                 self.subscribe_with_params, LAYER_CHANGED)
282    
283        def tearDown(self):
284            self.clear_messages()
285            self.layer.Destroy()
286            self.session.Destroy()
287            self.session = self.layer = self.store = self.classification = None
288    
289        def test_sanity(self):
290            """SetShapeStoreTests sanity check
291    
292            Test the initial state of the test case instances after setUp.
293            """
294            cls = self.layer.GetClassification()
295            self.assert_(cls is self.classification)
296            field = self.layer.GetClassificationColumn()
297            self.assertEquals(field, "CLPTLABEL")
298            self.assertEquals(self.layer.GetFieldType(field), FIELDTYPE_STRING)
299            self.assertEquals(self.layer.GetClassification().GetNumGroups(), 1)
300            self.failIf(self.layer.WasModified())
301    
302        def test_set_shape_store_modified_flag(self):
303            """Test whether Layer.SetShapeStore() sets the modified flag"""
304            memtable = MemoryTable([("FOO", FIELDTYPE_STRING)],
305                          [("bla",)] * self.layer.ShapeStore().Table().NumRows())
306            self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable))
307    
308            self.assert_(self.layer.WasModified())
309    
310        def test_set_shape_store_different_field_name(self):
311            """Test Layer.SetShapeStore() with different column name"""
312            memtable = MemoryTable([("FOO", FIELDTYPE_STRING)],
313                          [("bla",)] * self.layer.ShapeStore().Table().NumRows())
314            self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable))
315            # The classification should contain only the default group now.
316            self.assertEquals(self.layer.GetClassification().GetNumGroups(), 0)
317            self.check_messages([(self.layer, LAYER_CHANGED),
318                                 (self.layer, LAYER_SHAPESTORE_REPLACED)])
319    
320        def test_set_shape_store_same_field(self):
321            """Test Layer.SetShapeStore() with same column name and type"""
322            memtable = MemoryTable([("CLPTLABEL", FIELDTYPE_STRING)],
323                          [("bla",)] * self.layer.ShapeStore().Table().NumRows())
324            self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable))
325            # The classification should be the same as before
326            self.assert_(self.layer.GetClassification() is self.classification)
327            self.check_messages([(self.layer, LAYER_SHAPESTORE_REPLACED)])
328    
329        def test_set_shape_store_same_field_different_type(self):
330            """Test Layer.SetShapeStore() with same column name but different type
331            """
332            memtable = MemoryTable([("CLPTLABEL", FIELDTYPE_DOUBLE)],
333                          [(0.0,)] * self.layer.ShapeStore().Table().NumRows())
334            self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable))
335            # The classification should contain only the default group now.
336            self.assertEquals(self.layer.GetClassification().GetNumGroups(), 0)
337            self.check_messages([(self.layer, LAYER_CHANGED),
338                                 (self.layer, LAYER_SHAPESTORE_REPLACED)])
339    
340    
341    class TestLayerModification(unittest.TestCase, support.SubscriberMixin):
342    
343      """Test cases for Layer method that modify the layer.      """Test cases for Layer method that modify the layer.
344      """      """
# Line 209  class TestLayerLegend(unittest.TestCase, Line 358  class TestLayerLegend(unittest.TestCase,
358          self.layer.Subscribe(LAYER_VISIBILITY_CHANGED,          self.layer.Subscribe(LAYER_VISIBILITY_CHANGED,
359                               self.subscribe_with_params,                               self.subscribe_with_params,
360                               LAYER_VISIBILITY_CHANGED)                               LAYER_VISIBILITY_CHANGED)
361            self.layer.Subscribe(LAYER_CHANGED, self.subscribe_with_params,
362                                 LAYER_CHANGED)
363    
364      def tearDown(self):      def tearDown(self):
365          """Clear the list of received messages and explictly destroy self.layer          """Clear the list of received messages and explictly destroy self.layer
# Line 219  class TestLayerLegend(unittest.TestCase, Line 370  class TestLayerLegend(unittest.TestCase,
370          self.session = None          self.session = None
371          self.clear_messages()          self.clear_messages()
372    
373      def test_initial_settings(self):      def test_sanity(self):
374          """Test Layer's initial legend attributes"""          """TestLayerModification Sanity Checks"""
375          # test default settings          # test default settings
376          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)  
377          self.assertEquals(self.layer.Visible(), 1)          self.assertEquals(self.layer.Visible(), 1)
378          # no messages should have been produced          # no messages should have been produced
379          self.check_messages([])          self.check_messages([])
# Line 240  class TestLayerLegend(unittest.TestCase, Line 388  class TestLayerLegend(unittest.TestCase,
388          # the layer.          # the layer.
389          self.failIf(self.layer.WasModified())          self.failIf(self.layer.WasModified())
390    
391            def test_set_classification(self):
392            """Test Layer.SetClassification"""
393            classification = Classification()
394            classification.AppendGroup(ClassGroupRange((0.0, 0.1)))
395    
396            self.layer.SetClassification(classification)
397            self.layer.SetClassificationColumn("AREA")
398    
399            self.check_messages([(self.layer, LAYER_CHANGED),
400                                 (self.layer, LAYER_CHANGED)])
401            self.failUnless(self.layer.WasModified())
402    
403            self.clear_messages()
404            self.layer.UnsetModified()
405    
406            # change only the classification column. This should issue a
407            # LAYER_CHANGED message as well.
408            self.layer.SetClassificationColumn("PERIMETER")
409    
410            self.check_messages([(self.layer, LAYER_CHANGED)])
411            self.failUnless(self.layer.WasModified())
412    
413    
414  #  #
415  # the tree info now contains Color objects which are difficult to test  # the tree info now contains Color objects which are difficult to test
416  #  #
Legend:
Removed from v.947  
changed lines
  Added in v.1687
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