| 1 |
# Copyright (c) 2002, 2003 by Intevation GmbH |
| 2 |
# Authors: |
| 3 |
# Bernhard Herzog <[email protected]> |
| 4 |
# |
| 5 |
# This program is free software under the GPL (>=v2) |
| 6 |
# Read the file COPYING coming with Thuban for details. |
| 7 |
|
| 8 |
""" |
| 9 |
Test the Layer class |
| 10 |
""" |
| 11 |
|
| 12 |
__version__ = "$Revision$" |
| 13 |
# $Source$ |
| 14 |
# $Id$ |
| 15 |
|
| 16 |
import os |
| 17 |
import unittest |
| 18 |
|
| 19 |
import support |
| 20 |
support.initthuban() |
| 21 |
|
| 22 |
import shapelib |
| 23 |
import dbflib |
| 24 |
|
| 25 |
from Thuban.Model.session import Session |
| 26 |
from Thuban.Model.layer import BaseLayer, Layer, RasterLayer, \ |
| 27 |
SHAPETYPE_POLYGON, SHAPETYPE_ARC, SHAPETYPE_POINT |
| 28 |
from Thuban.Model.messages import LAYER_LEGEND_CHANGED, \ |
| 29 |
LAYER_VISIBILITY_CHANGED |
| 30 |
from Thuban.Model.color import Color |
| 31 |
from Thuban.Model.table import FIELDTYPE_DOUBLE |
| 32 |
from Thuban.Model.proj import Projection |
| 33 |
|
| 34 |
class TestLayer(unittest.TestCase, support.FileTestMixin, |
| 35 |
support.FloatComparisonMixin): |
| 36 |
|
| 37 |
"""Test cases for different layer (shape) types""" |
| 38 |
|
| 39 |
def assertFloatTuplesEqual(self, test, value): |
| 40 |
"""Assert equality of two lists of tuples of float""" |
| 41 |
for i in range(len(test)): |
| 42 |
self.assertFloatSeqEqual(test[i], value[i]) |
| 43 |
|
| 44 |
def setUp(self): |
| 45 |
"""Create a session""" |
| 46 |
self.session = Session("Test session for %s" % self.__class__) |
| 47 |
|
| 48 |
def tearDown(self): |
| 49 |
self.session = None |
| 50 |
|
| 51 |
def build_path(self, filename): |
| 52 |
return os.path.join("..", "Data", "iceland", filename) |
| 53 |
|
| 54 |
def open_shapefile(self, filename): |
| 55 |
"""Open and return a shapestore for filename in the iceland data set""" |
| 56 |
return self.session.OpenShapefile(self.build_path(filename)) |
| 57 |
|
| 58 |
def test_base_layer(self): |
| 59 |
layer = BaseLayer("Test BaseLayer") |
| 60 |
self.assertEquals(layer.Title(), "Test BaseLayer") |
| 61 |
self.failUnless(layer.Visible()) |
| 62 |
|
| 63 |
# toggle visibility |
| 64 |
layer.SetVisible(False) |
| 65 |
self.failIf(layer.Visible()) |
| 66 |
|
| 67 |
layer.SetVisible(True) |
| 68 |
self.failUnless(layer.Visible()) |
| 69 |
|
| 70 |
self.failIf(layer.HasClassification()) |
| 71 |
self.assertEquals(layer.GetProjection(), None) |
| 72 |
|
| 73 |
# set/get projection |
| 74 |
proj = Projection(["proj=utm", "zone=26"]) |
| 75 |
|
| 76 |
layer.SetProjection(proj) |
| 77 |
self.failUnless(layer.GetProjection() is proj) |
| 78 |
|
| 79 |
# __init__ with other arguments |
| 80 |
layer = BaseLayer("Test BaseLayer", False, proj) |
| 81 |
self.failIf(layer.Visible()) |
| 82 |
self.failUnless(layer.GetProjection() is proj) |
| 83 |
|
| 84 |
def test_arc_layer(self): |
| 85 |
"""Test Layer with arc shapes""" |
| 86 |
layer = Layer("Test Layer", self.open_shapefile("roads-line.shp")) |
| 87 |
self.assertEquals(layer.ShapeType(), SHAPETYPE_ARC) |
| 88 |
self.assertEquals(layer.NumShapes(), 839) |
| 89 |
shape = layer.Shape(32) |
| 90 |
self.assertFloatTuplesEqual(shape.Points(), |
| 91 |
[(-15.082174301147461, 66.27738189697265), |
| 92 |
(-15.026350021362305, 66.27339172363281)]) |
| 93 |
self.assertFloatSeqEqual(layer.BoundingBox(), |
| 94 |
[-24.450359344482422, 63.426830291748047, |
| 95 |
-13.55668830871582, 66.520111083984375]) |
| 96 |
self.assertEquals(layer.ShapesInRegion((-24.0, 64.0, -23.75, 64.25)), |
| 97 |
[613, 726, 838]) |
| 98 |
|
| 99 |
self.assertFloatSeqEqual(layer.ShapesBoundingBox([32]), |
| 100 |
[-15.082174301147461, 66.27339172363281, |
| 101 |
-15.026350021362305, 66.27738189697265]) |
| 102 |
|
| 103 |
shape = layer.Shape(33) |
| 104 |
self.assertFloatTuplesEqual(shape.Points(), |
| 105 |
[(-22.248506546020508, 66.30645751953125), |
| 106 |
(-22.232730865478516, 66.294075012207031), |
| 107 |
(-22.23158073425293, 66.287689208984375), |
| 108 |
(-22.246318817138672, 66.270065307617188)]) |
| 109 |
|
| 110 |
self.assertFloatSeqEqual(layer.ShapesBoundingBox([32, 33]), |
| 111 |
[-22.248506546020508, 66.270065307617188, |
| 112 |
-15.026350021362305, 66.30645751953125]) |
| 113 |
|
| 114 |
self.assertEquals(layer.ShapesBoundingBox([]), None) |
| 115 |
self.assertEquals(layer.ShapesBoundingBox(None), None) |
| 116 |
|
| 117 |
layer.Destroy() |
| 118 |
|
| 119 |
def test_polygon_layer(self): |
| 120 |
"""Test Layer with polygon shapes""" |
| 121 |
layer = Layer("Test Layer", self.open_shapefile("political.shp")) |
| 122 |
self.assertEquals(layer.ShapeType(), SHAPETYPE_POLYGON) |
| 123 |
self.assertEquals(layer.NumShapes(), 156) |
| 124 |
shape = layer.Shape(4) |
| 125 |
self.assertFloatTuplesEqual(shape.Points(), |
| 126 |
[(-22.406391143798828, 64.714111328125), |
| 127 |
(-22.41621208190918, 64.71600341796875), |
| 128 |
(-22.406051635742188, 64.719200134277344), |
| 129 |
(-22.406391143798828, 64.714111328125)]) |
| 130 |
self.assertFloatSeqEqual(layer.BoundingBox(), |
| 131 |
[-24.546524047851562, 63.286754608154297, |
| 132 |
-13.495815277099609, 66.563774108886719]) |
| 133 |
self.assertEquals(layer.ShapesInRegion((-24.0, 64.0, -23.9, 64.1)), |
| 134 |
[91, 92, 144, 146, 148, 150, 152, 153]) |
| 135 |
layer.Destroy() |
| 136 |
|
| 137 |
def test_point_layer(self): |
| 138 |
"""Test Layer with point shapes""" |
| 139 |
layer = Layer("Test Layer", |
| 140 |
self.open_shapefile("cultural_landmark-point.shp")) |
| 141 |
self.assertEquals(layer.ShapeType(), SHAPETYPE_POINT) |
| 142 |
self.assertEquals(layer.NumShapes(), 34) |
| 143 |
shape = layer.Shape(0) |
| 144 |
self.assertFloatTuplesEqual(shape.Points(), |
| 145 |
[(-22.711074829101562, 66.36572265625)]) |
| 146 |
self.assertFloatSeqEqual(layer.BoundingBox(), |
| 147 |
[-23.806047439575195, 63.405960083007812, |
| 148 |
-15.12291431427002, 66.36572265625]) |
| 149 |
self.assertEquals(layer.ShapesInRegion((-24.0, 64.0, -23.80, 64.1)), |
| 150 |
[0, 1, 2, 3, 4, 5, 27, 28, 29, 30, 31]) |
| 151 |
layer.Destroy() |
| 152 |
|
| 153 |
def test_empty_layer(self): |
| 154 |
"""Test Layer with empty shape file""" |
| 155 |
# create an empty shape file |
| 156 |
shapefilename = self.temp_file_name("layer_empty.shp") |
| 157 |
shp = shapelib.create(shapefilename, shapelib.SHPT_POLYGON) |
| 158 |
shp.close() |
| 159 |
# create an empty DBF file too because Thuban can't cope yet |
| 160 |
# with missing DBF file. |
| 161 |
dbffilename = self.temp_file_name("layer_empty.dbf") |
| 162 |
dbf = dbflib.create(dbffilename) |
| 163 |
dbf.add_field("NAME", dbflib.FTString, 20, 0) |
| 164 |
|
| 165 |
# Now try to open it. |
| 166 |
layer = Layer("Empty Layer", |
| 167 |
self.session.OpenShapefile(shapefilename)) |
| 168 |
self.assertEquals(layer.BoundingBox(), None) |
| 169 |
self.assertEquals(layer.LatLongBoundingBox(), None) |
| 170 |
self.assertEquals(layer.NumShapes(), 0) |
| 171 |
layer.Destroy() |
| 172 |
|
| 173 |
def test_get_field_type(self): |
| 174 |
"""Test Layer.GetFieldType()""" |
| 175 |
layer = Layer("Test Layer", self.open_shapefile("roads-line.shp")) |
| 176 |
self.assertEquals(layer.GetFieldType("LENGTH"), FIELDTYPE_DOUBLE) |
| 177 |
self.assertEquals(layer.GetFieldType("non existing"), None) |
| 178 |
layer.Destroy() |
| 179 |
|
| 180 |
def test_raster_layer(self): |
| 181 |
filename = self.build_path("island.tif") |
| 182 |
layer = RasterLayer("Test RasterLayer", filename) |
| 183 |
self.assertEquals(layer.GetImageFilename(), filename) |
| 184 |
self.assertFloatSeqEqual(layer.BoundingBox(), |
| 185 |
[-24.5500000, 63.2833330, |
| 186 |
-13.4916670, 66.5666670]) |
| 187 |
self.assertFloatSeqEqual(layer.LatLongBoundingBox(), |
| 188 |
[-24.5500000, 63.2833330, |
| 189 |
-13.4916670, 66.5666670]) |
| 190 |
|
| 191 |
|
| 192 |
class TestLayerLegend(unittest.TestCase, support.SubscriberMixin): |
| 193 |
|
| 194 |
"""Test cases for Layer method that modify the layer. |
| 195 |
""" |
| 196 |
|
| 197 |
def setUp(self): |
| 198 |
"""Clear the list of received messages and create a layer and a session |
| 199 |
|
| 200 |
The layer is bound to self.layer and the session to self.session. |
| 201 |
""" |
| 202 |
self.clear_messages() |
| 203 |
self.session = Session("Test session for %s" % self.__class__) |
| 204 |
filename = os.path.join("..", "Data", "iceland", "political.shp") |
| 205 |
self.layer = Layer("Test Layer", |
| 206 |
self.session.OpenShapefile(filename)) |
| 207 |
self.layer.Subscribe(LAYER_LEGEND_CHANGED, self.subscribe_with_params, |
| 208 |
LAYER_LEGEND_CHANGED) |
| 209 |
self.layer.Subscribe(LAYER_VISIBILITY_CHANGED, |
| 210 |
self.subscribe_with_params, |
| 211 |
LAYER_VISIBILITY_CHANGED) |
| 212 |
|
| 213 |
def tearDown(self): |
| 214 |
"""Clear the list of received messages and explictly destroy self.layer |
| 215 |
""" |
| 216 |
self.layer.Destroy() |
| 217 |
self.layer = None |
| 218 |
self.session.Destroy() |
| 219 |
self.session = None |
| 220 |
self.clear_messages() |
| 221 |
|
| 222 |
def test_initial_settings(self): |
| 223 |
"""Test Layer's initial legend attributes""" |
| 224 |
# test default settings |
| 225 |
self.failIf(self.layer.WasModified()) |
| 226 |
#self.assertEquals(self.layer.fill, None) |
| 227 |
#self.assertEquals(self.layer.stroke.hex(), "#000000") |
| 228 |
#self.assertEquals(self.layer.stroke_width, 1) |
| 229 |
self.assertEquals(self.layer.Visible(), 1) |
| 230 |
# no messages should have been produced |
| 231 |
self.check_messages([]) |
| 232 |
|
| 233 |
def test_visibility(self): |
| 234 |
"""Test Layer visibility""" |
| 235 |
self.layer.SetVisible(0) |
| 236 |
self.assertEquals(self.layer.Visible(), 0) |
| 237 |
self.check_messages([(self.layer, LAYER_VISIBILITY_CHANGED)]) |
| 238 |
|
| 239 |
# currently, modifying the visibility doesn't count as changing |
| 240 |
# the layer. |
| 241 |
self.failIf(self.layer.WasModified()) |
| 242 |
|
| 243 |
|
| 244 |
# |
| 245 |
# the tree info now contains Color objects which are difficult to test |
| 246 |
# |
| 247 |
# def test_tree_info(self): |
| 248 |
# """Test Layer.TreeInfo""" |
| 249 |
# self.assertEquals(self.layer.TreeInfo(), |
| 250 |
# ("Layer 'Test Layer'", |
| 251 |
# ['Shown', |
| 252 |
# 'Shapes: 156', |
| 253 |
# ('Extent (lat-lon):' |
| 254 |
# ' (-24.5465, 63.2868, -13.4958, 66.5638)'), |
| 255 |
# 'Shapetype: Polygon', |
| 256 |
# 'Fill: None', |
| 257 |
# 'Outline: (0.000, 0.000, 0.000)'])) |
| 258 |
|
| 259 |
|
| 260 |
if __name__ == "__main__": |
| 261 |
support.run_tests() |
Parent Directory
| 
Revision Log