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# Copyright (c) 2002 by Intevation GmbH |
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# Authors: |
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# Bernhard Herzog <[email protected]> |
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# |
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# This program is free software under the GPL (>=v2) |
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# Read the file COPYING coming with Thuban for details. |
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|
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""" |
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Test the Layer class |
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""" |
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|
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__version__ = "$Revision$" |
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# $Source$ |
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# $Id$ |
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|
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import os |
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import unittest |
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|
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import support |
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support.initthuban() |
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|
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import shapelib |
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import dbflib |
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|
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from Thuban.Model.layer import Layer, SHAPETYPE_POLYGON, SHAPETYPE_ARC, \ |
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SHAPETYPE_POINT |
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from Thuban.Model.messages import LAYER_LEGEND_CHANGED, \ |
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LAYER_VISIBILITY_CHANGED |
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from Thuban.Model.color import Color |
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|
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class TestLayer(unittest.TestCase, support.FileTestMixin, |
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support.FloatComparisonMixin): |
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|
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"""Test cases for different layer (shape) types""" |
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|
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def assertFloatTuplesEqual(self, test, value): |
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"""Assert equality of two lists of tuples of float""" |
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for i in range(len(test)): |
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self.assertFloatSeqEqual(test[i], value[i]) |
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|
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def test_arc_layer(self): |
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"""Test Layer with arc shapes""" |
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layer = Layer("Test Layer", |
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os.path.join("..", "Data", "iceland", "roads-line.shp")) |
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self.assertEquals(layer.Title(), "Test Layer") |
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self.assertEquals(layer.ShapeType(), SHAPETYPE_ARC) |
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self.assertEquals(layer.NumShapes(), 839) |
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shape = layer.Shape(32) |
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self.assertFloatTuplesEqual(shape.Points(), |
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[(-15.082174301147461, 66.27738189697265), |
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(-15.026350021362305, 66.27339172363281)]) |
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self.assertFloatSeqEqual(layer.BoundingBox(), |
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[-24.450359344482422, 63.426830291748047, |
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-13.55668830871582, 66.520111083984375]) |
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self.assertEquals(layer.ShapesInRegion((-24.0, 64.0, -23.75, 64.25)), |
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[613, 726, 838]) |
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|
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def test_polygon_layer(self): |
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"""Test Layer with polygon shapes""" |
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layer = Layer("Test Layer", |
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os.path.join("..", "Data", "iceland", "political.shp")) |
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self.assertEquals(layer.Title(), "Test Layer") |
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self.assertEquals(layer.ShapeType(), SHAPETYPE_POLYGON) |
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self.assertEquals(layer.NumShapes(), 156) |
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shape = layer.Shape(4) |
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self.assertFloatTuplesEqual(shape.Points(), |
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[(-22.406391143798828, 64.714111328125), |
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(-22.41621208190918, 64.71600341796875), |
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(-22.406051635742188, 64.719200134277344), |
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(-22.406391143798828, 64.714111328125)]) |
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self.assertFloatSeqEqual(layer.BoundingBox(), |
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[-24.546524047851562, 63.286754608154297, |
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-13.495815277099609, 66.563774108886719]) |
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self.assertEquals(layer.ShapesInRegion((-24.0, 64.0, -23.9, 64.1)), |
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[91, 92, 144, 146, 148, 150, 152, 153]) |
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|
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def test_point_layer(self): |
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"""Test Layer with point shapes""" |
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layer = Layer("Test Layer", |
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os.path.join("..", "Data", "iceland", |
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"cultural_landmark-point.shp")) |
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self.assertEquals(layer.Title(), "Test Layer") |
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self.assertEquals(layer.ShapeType(), SHAPETYPE_POINT) |
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self.assertEquals(layer.NumShapes(), 34) |
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shape = layer.Shape(0) |
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self.assertFloatTuplesEqual(shape.Points(), |
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[(-22.711074829101562, 66.36572265625)]) |
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self.assertFloatSeqEqual(layer.BoundingBox(), |
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[-23.806047439575195, 63.405960083007812, |
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-15.12291431427002, 66.36572265625]) |
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self.assertEquals(layer.ShapesInRegion((-24.0, 64.0, -23.80, 64.1)), |
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[0, 1, 2, 3, 4, 5, 27, 28, 29, 30, 31]) |
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|
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def test_empty_layer(self): |
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"""Test Layer with empty shape file""" |
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# create an empty shape file |
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shapefilename = self.temp_file_name("layer_empty.shp") |
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shp = shapelib.create(shapefilename, shapelib.SHPT_POLYGON) |
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shp.close() |
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# create an empty DBF file too because Thuban can't cope yet |
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# with missing DBF file. |
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dbffilename = self.temp_file_name("layer_empty.dbf") |
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dbf = dbflib.create(dbffilename) |
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dbf.add_field("NAME", dbflib.FTString, 20, 0) |
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|
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# Now try to open it. |
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layer = Layer("Empty Layer", shapefilename) |
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self.assertEquals(layer.BoundingBox(), None) |
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self.assertEquals(layer.LatLongBoundingBox(), None) |
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self.assertEquals(layer.NumShapes(), 0) |
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|
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|
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class TestLayerLegend(unittest.TestCase, support.SubscriberMixin): |
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|
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"""Test cases for Layer method that modify the layer. |
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""" |
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|
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def setUp(self): |
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"""Clear the list of received messages and create a layer |
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|
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The layer is bound to self.layer. |
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""" |
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self.clear_messages() |
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self.layer = Layer("Test Layer", |
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os.path.join("..", "Data", "iceland", |
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"political.shp")) |
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self.layer.Subscribe(LAYER_LEGEND_CHANGED, self.subscribe_with_params, |
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LAYER_LEGEND_CHANGED) |
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self.layer.Subscribe(LAYER_VISIBILITY_CHANGED, |
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self.subscribe_with_params, |
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LAYER_VISIBILITY_CHANGED) |
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|
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def tearDown(self): |
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"""Clear the list of received messages and explictly destroy self.layer |
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""" |
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self.layer.Destroy() |
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self.clear_messages() |
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|
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def test_initial_settings(self): |
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"""Test Layer's initial legend attributes""" |
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# test default settings |
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self.failIf(self.layer.WasModified()) |
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self.assertEquals(self.layer.fill, None) |
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self.assertEquals(self.layer.stroke.hex(), "#000000") |
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self.assertEquals(self.layer.stroke_width, 1) |
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self.assertEquals(self.layer.Visible(), 1) |
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# no messages should have been produced |
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self.check_messages([]) |
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|
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def test_visibility(self): |
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"""Test Layer visibility""" |
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self.layer.SetVisible(0) |
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self.assertEquals(self.layer.Visible(), 0) |
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self.check_messages([(self.layer, LAYER_VISIBILITY_CHANGED)]) |
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|
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# currently, modifying the visibility doesn't count as changing |
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# the layer. |
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self.failIf(self.layer.WasModified()) |
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|
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|
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# |
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# the tree info now contains Color objects which are difficult to test |
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# |
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# def test_tree_info(self): |
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# """Test Layer.TreeInfo""" |
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# self.assertEquals(self.layer.TreeInfo(), |
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# ("Layer 'Test Layer'", |
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# ['Shown', |
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# 'Shapes: 156', |
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# ('Extent (lat-lon):' |
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# ' (-24.5465, 63.2868, -13.4958, 66.5638)'), |
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# 'Shapetype: Polygon', |
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# 'Fill: None', |
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# 'Outline: (0.000, 0.000, 0.000)'])) |
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|
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|
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if __name__ == "__main__": |
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unittest.main() |
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