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# Copyright (c) 2002, 2003, 2004 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 mockgeo |
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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.session import Session |
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from Thuban.Model.layer import BaseLayer, Layer, RasterLayer |
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from Thuban.Model.data import SHAPETYPE_POLYGON, SHAPETYPE_ARC, SHAPETYPE_POINT |
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from Thuban.Model.messages import LAYER_LEGEND_CHANGED, \ |
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LAYER_VISIBILITY_CHANGED, LAYER_SHAPESTORE_REPLACED, LAYER_CHANGED |
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from Thuban.Model.table import FIELDTYPE_DOUBLE, FIELDTYPE_STRING, MemoryTable |
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from Thuban.Model.proj import Projection |
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from Thuban.Model.data import DerivedShapeStore |
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from Thuban.Model.classification import Classification, ClassGroupSingleton, \ |
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ClassGroupRange |
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from Thuban.Model.color import Color |
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|
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import Thuban.Model.resource |
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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 setUp(self): |
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"""Create a session self.session and initialize self.layer to None""" |
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self.session = Session("Test session for %s" % self.__class__) |
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self.layer = None |
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|
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def tearDown(self): |
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"""Call the layer's Destroy method and set session and layer to None""" |
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self.session.Destroy() |
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self.session = None |
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if self.layer is not None: |
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self.layer.Destroy() |
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self.layer = None |
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|
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def build_path(self, filename): |
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return os.path.join("..", "Data", "iceland", filename) |
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|
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def open_shapefile(self, filename): |
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"""Open and return a shapestore for filename in the iceland data set""" |
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return self.session.OpenShapefile(self.build_path(filename)) |
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|
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def test_base_layer(self): |
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layer = self.layer = BaseLayer("Test BaseLayer") |
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self.assertEquals(layer.Title(), "Test BaseLayer") |
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self.failUnless(layer.Visible()) |
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|
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# toggle visibility |
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layer.SetVisible(False) |
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self.failIf(layer.Visible()) |
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|
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layer.SetVisible(True) |
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self.failUnless(layer.Visible()) |
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|
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self.failIf(layer.HasClassification()) |
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self.failIf(layer.HasShapes()) |
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|
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self.assertEquals(layer.GetProjection(), None) |
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|
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# set/get projection |
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proj = Projection(["proj=utm", "zone=26", "ellps=clrk66"]) |
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|
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layer.SetProjection(proj) |
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self.failUnless(layer.GetProjection() is proj) |
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|
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# __init__ with other arguments |
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layer = BaseLayer("Test BaseLayer", False, proj) |
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self.failIf(layer.Visible()) |
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self.failUnless(layer.GetProjection() is proj) |
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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 = self.layer = Layer("Test Layer", |
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self.open_shapefile("roads-line.shp")) |
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self.failUnless(layer.HasClassification()) |
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self.failUnless(layer.HasShapes()) |
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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.assertPointListEquals(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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shapes = layer.ShapesInRegion((-24.0, 64.0, -23.75, 64.25)) |
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self.assertEquals([s.ShapeID() for s in shapes], |
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[613, 726, 838]) |
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|
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self.assertFloatSeqEqual(layer.ShapesBoundingBox([32]), |
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[-15.082174301147461, 66.27339172363281, |
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-15.026350021362305, 66.27738189697265]) |
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|
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shape = layer.Shape(33) |
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self.assertPointListEquals(shape.Points(), |
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[[(-22.24850654602050, 66.30645751953125), |
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(-22.23273086547851, 66.29407501220703), |
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(-22.23158073425293, 66.2876892089843), |
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(-22.24631881713867, 66.27006530761718)]]) |
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|
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self.assertFloatSeqEqual(layer.ShapesBoundingBox([32, 33]), |
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[-22.248506546020508, 66.270065307617188, |
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-15.026350021362305, 66.30645751953125]) |
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|
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self.assertEquals(layer.ShapesBoundingBox([]), None) |
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self.assertEquals(layer.ShapesBoundingBox(None), None) |
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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 = self.layer = Layer("Test Layer", |
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self.open_shapefile("political.shp")) |
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self.failUnless(layer.HasClassification()) |
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self.failUnless(layer.HasShapes()) |
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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.assertPointListEquals(shape.Points(), |
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[[(-22.40639114379882, 64.714111328125), |
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(-22.41621208190918, 64.7160034179687), |
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(-22.40605163574218, 64.719200134277), |
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(-22.40639114379882, 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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shapes = layer.ShapesInRegion((-24.0, 64.0, -23.9, 64.1)) |
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self.assertEquals([s.ShapeID() for s in shapes], |
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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 = self.layer = Layer("Test Layer", |
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self.open_shapefile("cultural_landmark-point.shp")) |
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self.failUnless(layer.HasClassification()) |
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self.failUnless(layer.HasShapes()) |
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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.assertPointListEquals(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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shapes = layer.ShapesInRegion((-24.0, 64.0, -23.80, 64.1)) |
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self.assertEquals([s.ShapeID() for s in shapes], |
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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_arc_layer_with_projection(self): |
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"""Test Layer with point shapes and a projection""" |
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# We use mock data here so that we have precise control over the |
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# values |
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table = MemoryTable([("FOO", FIELDTYPE_STRING)], [("bla",)]) |
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store = mockgeo.SimpleShapeStore(SHAPETYPE_ARC, |
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[[[(9884828.7209840547, 5607720.9774499247), |
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(11298336.04640449, 9287823.2044059951)]]], |
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table) |
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layer = self.layer = Layer("Test Layer", store) |
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|
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proj = Projection(["proj=lcc", "lon_0=0", "lat_1=20n", "lat_2=60n", |
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"ellps=clrk66"]) |
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layer.SetProjection(proj) |
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|
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self.assertFloatSeqEqual(layer.BoundingBox(), |
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(9884828.7209840547, 5607720.9774499247, |
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11298336.04640449, 9287823.2044059951)) |
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self.assertFloatSeqEqual(layer.LatLongBoundingBox(), |
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(90.0, -8.90043373, 120, 11.1616263)) |
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shapes = layer.ShapesInRegion((100, -10, 150, +10)) |
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self.assertEquals([s.ShapeID() for s in shapes], [0]) |
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self.assertFloatSeqEqual(layer.ShapesBoundingBox([0]), |
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(90.0, -8.90043373, 120, 11.1616263)) |
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|
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self.assertFloatSeqEqual(layer.ClipBoundingBox((-180, -6, 100, +120)), |
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(90.0, -6, 100, 11.1616263)) |
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shapes = layer.ShapesInRegion((-180, -170, 200, +120)) |
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self.assertEquals([s.ShapeID() for s in shapes],[0]) |
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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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dbf.close() |
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|
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# Now try to open it. |
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layer = self.layer = Layer("Empty Layer", |
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self.session.OpenShapefile(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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def test_get_field_type(self): |
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"""Test Layer.GetFieldType()""" |
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layer = self.layer = Layer("Test Layer", |
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self.open_shapefile("roads-line.shp")) |
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self.assertEquals(layer.GetFieldType("LENGTH"), FIELDTYPE_DOUBLE) |
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self.assertEquals(layer.GetFieldType("non existing"), None) |
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|
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def test_raster_layer(self): |
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if not Thuban.Model.resource.has_gdal_support(): |
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raise support.SkipTest("No gdal support") |
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|
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filename = self.build_path("island.tif") |
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layer = RasterLayer("Test RasterLayer", filename) |
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self.failIf(layer.HasClassification()) |
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self.failIf(layer.HasShapes()) |
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self.assertEquals(layer.MaskType(), layer.MASK_BIT) |
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self.assertEquals(layer.GetImageFilename(), os.path.abspath(filename)) |
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self.assertFloatSeqEqual(layer.BoundingBox(), |
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[-24.5500000, 63.2833330, |
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-13.4916670, 66.5666670]) |
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self.assertFloatSeqEqual(layer.LatLongBoundingBox(), |
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[-24.5500000, 63.2833330, |
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-13.4916670, 66.5666670]) |
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|
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info = layer.ImageInfo() |
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self.failIf(info is None) |
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self.failUnless(info.has_key("nBands")) |
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self.failUnless(info.has_key("Size")) |
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self.failUnless(info.has_key("Driver")) |
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self.failUnless(info.has_key("BandData")) |
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|
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self.assertEquals(info["nBands"], 1) |
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self.assertEquals(info["Size"], (5002, 394)) |
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self.assertEquals(info["Driver"], "GTiff") |
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self.assertEquals(info["BandData"], [(0.0, 140.0)]) |
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|
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def test_derived_store(self): |
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"""Test layer with derived store""" |
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layer = self.layer = Layer("Test Layer", |
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self.open_shapefile("roads-line.shp")) |
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try: |
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store = layer.ShapeStore() |
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derived = DerivedShapeStore(store, store.Table()) |
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layer.SetShapeStore(derived) |
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self.assert_(layer.ShapeStore() is derived) |
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|
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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.assertPointListEquals(shape.Points(), |
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[[(-15.082174301147, 66.277381896972), |
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(-15.026350021362, 66.273391723632)]]) |
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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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shapes = layer.ShapesInRegion((-24.0, 64.0, -23.75, 64.25)) |
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self.assertEquals([s.ShapeID() for s in shapes], |
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[613, 726, 838]) |
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|
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self.assertFloatSeqEqual(layer.ShapesBoundingBox([32]), |
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[-15.082174301147461, 66.27339172363281, |
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-15.026350021362305, 66.27738189697265]) |
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|
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finally: |
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store = derived = None |
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|
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|
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class SetShapeStoreTests(unittest.TestCase, support.SubscriberMixin): |
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|
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def setUp(self): |
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"""Create a layer with a classification as self.layer""" |
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self.clear_messages() |
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self.session = Session("Test session for %s" % self.__class__) |
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self.shapefilename = os.path.join("..", "Data", "iceland", |
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"cultural_landmark-point.dbf") |
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self.store = self.session.OpenShapefile(self.shapefilename) |
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self.layer = Layer("test layer", self.store) |
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self.classification = Classification() |
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self.classification.AppendGroup(ClassGroupSingleton("FARM")) |
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self.layer.SetClassificationColumn("CLPTLABEL") |
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self.layer.SetClassification(self.classification) |
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self.layer.UnsetModified() |
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self.layer.Subscribe(LAYER_SHAPESTORE_REPLACED, |
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self.subscribe_with_params, |
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LAYER_SHAPESTORE_REPLACED) |
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self.layer.Subscribe(LAYER_CHANGED, |
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self.subscribe_with_params, LAYER_CHANGED) |
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|
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def tearDown(self): |
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self.clear_messages() |
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self.layer.Destroy() |
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self.session.Destroy() |
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self.session = self.layer = self.store = self.classification = None |
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|
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def test_sanity(self): |
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"""SetShapeStoreTests sanity check |
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|
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Test the initial state of the test case instances after setUp. |
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""" |
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cls = self.layer.GetClassification() |
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self.assert_(cls is self.classification) |
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field = self.layer.GetClassificationColumn() |
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self.assertEquals(field, "CLPTLABEL") |
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self.assertEquals(self.layer.GetFieldType(field), FIELDTYPE_STRING) |
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self.assertEquals(self.layer.GetClassification().GetNumGroups(), 1) |
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self.failIf(self.layer.WasModified()) |
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|
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def test_set_shape_store_modified_flag(self): |
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"""Test whether Layer.SetShapeStore() sets the modified flag""" |
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memtable = MemoryTable([("FOO", FIELDTYPE_STRING)], |
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[("bla",)] * self.layer.ShapeStore().Table().NumRows()) |
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self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable)) |
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|
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self.assert_(self.layer.WasModified()) |
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|
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def test_set_shape_store_different_field_name(self): |
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"""Test Layer.SetShapeStore() with different column name""" |
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memtable = MemoryTable([("FOO", FIELDTYPE_STRING)], |
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[("bla",)] * self.layer.ShapeStore().Table().NumRows()) |
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self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable)) |
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# The classification should contain only the default group now. |
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self.assertEquals(self.layer.GetClassification().GetNumGroups(), 0) |
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self.check_messages([(self.layer, LAYER_CHANGED), |
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(self.layer, LAYER_SHAPESTORE_REPLACED)]) |
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|
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def test_set_shape_store_same_field(self): |
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"""Test Layer.SetShapeStore() with same column name and type""" |
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memtable = MemoryTable([("CLPTLABEL", FIELDTYPE_STRING)], |
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[("bla",)] * self.layer.ShapeStore().Table().NumRows()) |
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self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable)) |
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# The classification should be the same as before |
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self.assert_(self.layer.GetClassification() is self.classification) |
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self.check_messages([(self.layer, LAYER_SHAPESTORE_REPLACED)]) |
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|
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def test_set_shape_store_same_field_different_type(self): |
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"""Test Layer.SetShapeStore() with same column name but different type |
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""" |
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memtable = MemoryTable([("CLPTLABEL", FIELDTYPE_DOUBLE)], |
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[(0.0,)] * self.layer.ShapeStore().Table().NumRows()) |
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self.layer.SetShapeStore(DerivedShapeStore(self.store, memtable)) |
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# The classification should contain only the default group now. |
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self.assertEquals(self.layer.GetClassification().GetNumGroups(), 0) |
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self.check_messages([(self.layer, LAYER_CHANGED), |
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(self.layer, LAYER_SHAPESTORE_REPLACED)]) |
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|
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|
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class TestLayerModification(unittest.TestCase, support.SubscriberMixin): |
| 366 |
|
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"""Test cases for Layer method that modify the layer. |
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""" |
| 369 |
|
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def setUp(self): |
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"""Clear the list of received messages and create a layer and a session |
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|
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The layer is bound to self.layer and the session to self.session. |
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""" |
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self.clear_messages() |
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self.session = Session("Test session for %s" % self.__class__) |
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self.filename = os.path.join("..", "Data", "iceland", "political.shp") |
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self.layer = Layer("Test Layer", |
| 379 |
self.session.OpenShapefile(self.filename)) |
| 380 |
self.layer.Subscribe(LAYER_LEGEND_CHANGED, self.subscribe_with_params, |
| 381 |
LAYER_LEGEND_CHANGED) |
| 382 |
self.layer.Subscribe(LAYER_VISIBILITY_CHANGED, |
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self.subscribe_with_params, |
| 384 |
LAYER_VISIBILITY_CHANGED) |
| 385 |
self.layer.Subscribe(LAYER_CHANGED, self.subscribe_with_params, |
| 386 |
LAYER_CHANGED) |
| 387 |
|
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def tearDown(self): |
| 389 |
"""Clear the list of received messages and explictly destroy self.layer |
| 390 |
""" |
| 391 |
self.layer.Destroy() |
| 392 |
self.layer = None |
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self.session.Destroy() |
| 394 |
self.session = None |
| 395 |
self.clear_messages() |
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|
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def build_path(self, filename): |
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return os.path.join("..", "Data", "iceland", filename) |
| 399 |
|
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def test_sanity(self): |
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"""TestLayerModification Sanity Checks""" |
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# test default settings |
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self.failIf(self.layer.WasModified()) |
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self.assertEquals(self.layer.Visible(), 1) |
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# no messages should have been produced |
| 406 |
self.check_messages([]) |
| 407 |
|
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def test_visibility(self): |
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"""Test Layer visibility""" |
| 410 |
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()) |
| 417 |
|
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def test_set_classification(self): |
| 419 |
"""Test Layer.SetClassification""" |
| 420 |
classification = Classification() |
| 421 |
classification.AppendGroup(ClassGroupRange((0.0, 0.1))) |
| 422 |
|
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self.layer.SetClassification(classification) |
| 424 |
self.layer.SetClassificationColumn("AREA") |
| 425 |
|
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self.check_messages([(self.layer, LAYER_CHANGED), |
| 427 |
(self.layer, LAYER_CHANGED)]) |
| 428 |
self.failUnless(self.layer.WasModified()) |
| 429 |
|
| 430 |
self.clear_messages() |
| 431 |
self.layer.UnsetModified() |
| 432 |
|
| 433 |
# change only the classification column. This should issue a |
| 434 |
# LAYER_CHANGED message as well. |
| 435 |
self.layer.SetClassificationColumn("PERIMETER") |
| 436 |
|
| 437 |
self.check_messages([(self.layer, LAYER_CHANGED)]) |
| 438 |
self.failUnless(self.layer.WasModified()) |
| 439 |
|
| 440 |
|
| 441 |
def test_tree_info(self): |
| 442 |
"""Test Layer.TreeInfo""" |
| 443 |
self.assertEquals(self.layer.TreeInfo(), |
| 444 |
("Layer 'Test Layer'", |
| 445 |
['Filename: %s' % os.path.abspath(self.filename), |
| 446 |
'Shown', |
| 447 |
'Shapes: 156', |
| 448 |
'Extent (lat-lon): (-24.5465, 63.2868, -13.4958, 66.5638)', |
| 449 |
'Shapetype: Polygon', |
| 450 |
self.layer.GetClassification()])) |
| 451 |
|
| 452 |
def test_raster_layer(self): |
| 453 |
if not Thuban.Model.resource.has_gdal_support(): |
| 454 |
raise support.SkipTest("No gdal support") |
| 455 |
|
| 456 |
|
| 457 |
filename = self.build_path("island.tif") |
| 458 |
layer = RasterLayer("Test RasterLayer", filename) |
| 459 |
|
| 460 |
layer.Subscribe(LAYER_CHANGED, self.subscribe_with_params, |
| 461 |
LAYER_CHANGED) |
| 462 |
|
| 463 |
self.assertEquals(layer.MaskType(), layer.MASK_BIT) |
| 464 |
|
| 465 |
layer.SetMaskType(layer.MASK_NONE) |
| 466 |
self.failIf(layer.MaskType() != layer.MASK_NONE) |
| 467 |
self.check_messages([(layer, LAYER_CHANGED)]) |
| 468 |
self.clear_messages() |
| 469 |
|
| 470 |
layer.SetMaskType(layer.MASK_NONE) |
| 471 |
self.failIf(layer.MaskType() != layer.MASK_NONE) |
| 472 |
self.check_messages([]) |
| 473 |
self.clear_messages() |
| 474 |
|
| 475 |
layer.SetMaskType(layer.MASK_BIT) |
| 476 |
self.failIf(layer.MaskType() != layer.MASK_BIT) |
| 477 |
self.check_messages([(layer, LAYER_CHANGED)]) |
| 478 |
self.clear_messages() |
| 479 |
|
| 480 |
layer.SetMaskType(layer.MASK_BIT) |
| 481 |
self.failIf(layer.MaskType() != layer.MASK_BIT) |
| 482 |
self.check_messages([]) |
| 483 |
self.clear_messages() |
| 484 |
|
| 485 |
layer.SetMaskType(layer.MASK_ALPHA) |
| 486 |
self.failIf(layer.MaskType() != layer.MASK_ALPHA) |
| 487 |
|
| 488 |
layer.SetOpacity(0) |
| 489 |
self.assertEquals(layer.Opacity(), 0) |
| 490 |
layer.SetOpacity(0.5) |
| 491 |
self.assertEquals(layer.Opacity(), 0.5) |
| 492 |
|
| 493 |
self.clear_messages() |
| 494 |
layer.SetOpacity(1) |
| 495 |
self.assertEquals(layer.Opacity(), 1) |
| 496 |
self.check_messages([(layer, LAYER_CHANGED)]) |
| 497 |
self.clear_messages() |
| 498 |
|
| 499 |
self.assertRaises(ValueError, layer.SetOpacity, -0.1) |
| 500 |
self.assertRaises(ValueError, layer.SetOpacity, 1.1) |
| 501 |
|
| 502 |
layer.SetMaskType(layer.MASK_NONE) |
| 503 |
self.clear_messages() |
| 504 |
self.assertEquals(layer.Opacity(), 1) |
| 505 |
self.check_messages([]) |
| 506 |
self.clear_messages() |
| 507 |
|
| 508 |
self.assertRaises(ValueError, layer.SetMaskType, -1) |
| 509 |
self.assertRaises(ValueError, layer.SetMaskType, 4) |
| 510 |
|
| 511 |
|
| 512 |
if __name__ == "__main__": |
| 513 |
support.run_tests() |
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