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# Copyright (c) 2002, 2003 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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Test loading a thuban session from a file |
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The tests in this file (test_load.py) are always be the tests for the |
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current version of the thuban file format. Tests for older versions can |
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be found in the version specific test modules, e.g. test_load_0_2 for |
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files created by Thuban 0.2. |
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Maintenance of the test cases: |
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When during a development period the file format is changed with respect |
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to the last released version for the first, the tests here should be |
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copied to the version specific test file. The round-trip tests which |
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save the session again and compare the XML files should not be copied |
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over as they only make sense here to make sure th that the files checked |
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here are actually ones that may have been written by the current thuban |
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version. |
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""" |
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__version__ = "$Revision$" |
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# $Source$ |
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# $Id$ |
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import os |
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import unittest |
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import support |
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support.initthuban() |
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from xmlsupport import sax_eventlist |
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from Thuban.Model.save import save_session |
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from Thuban.Model.load import load_session, parse_color |
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from Thuban.Model.color import Color |
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from Thuban.Model.classification import ClassGroupProperties, ClassGroupRange,\ |
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ClassGroupSingleton, ClassGroupDefault |
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def filenames_equal(name1, name2): |
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"""Return true if the filenames name1 and name2 are equal. |
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On systems where it is available, simply use os.path.samefile, |
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otherwise return whether the normalized versions of the filenames |
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according to os.path.normpath are equal. |
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""" |
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if hasattr(os.path, "samefile"): |
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return os.path.samefile(name1, name2) |
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return os.path.normpath(name1) == os.path.normpath(name2) |
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class LoadSessionTest(support.FileLoadTestCase): |
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"""Base class for .thuban file loading tests |
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Basically the same as the FileLoadTestCase, except that all tests |
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use the '.thuban' extension by default and that setUp and tearDown |
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handle sessions. |
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""" |
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file_extension = ".thuban" |
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def setUp(self): |
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"""Create the test files""" |
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support.FileLoadTestCase.setUp(self) |
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self.session = None |
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def tearDown(self): |
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if self.session is not None: |
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self.session.Destroy() |
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self.session = None |
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def check_format(self): |
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"""Check whether the file we loaded from matches the one that |
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would be written. Call this from each test case after loading |
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the session |
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""" |
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filename = self.temp_file_name(self.id() + ".roundtrip.thuban") |
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save_session(self.session, filename) |
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el1 = sax_eventlist(filename = filename) |
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el2 = sax_eventlist(filename = self.filename()) |
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self.assertEquals(el1, el2) |
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class ClassificationTest(LoadSessionTest): |
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""" |
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Base class for tests that do some detailed checking of classifications |
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""" |
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def TestLayers(self, layers, expected): |
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TITLE = 0 |
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NUM_GROUPS = 1 |
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CLASSES = 2 |
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GROUP_TYPE = 0 |
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GROUP_DATA = 1 |
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GROUP_LABEL = 2 |
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GROUP_PROPS = 3 |
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eq = self.assertEquals |
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eq(len(layers), len(expected)) |
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for layer, data in zip(layers, expected): |
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eq(layer.Title(), data[TITLE]) |
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clazz = layer.GetClassification() |
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eq(clazz.GetNumGroups(), data[NUM_GROUPS]) |
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eq(clazz.GetNumGroups() + 1, len(data[CLASSES])) |
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i = 0 |
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for group in clazz: |
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props = ClassGroupProperties() |
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props.SetLineColor( |
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parse_color(data[CLASSES][i][GROUP_PROPS][0])) |
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props.SetLineWidth(data[CLASSES][i][GROUP_PROPS][1]) |
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props.SetFill( |
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parse_color(data[CLASSES][i][GROUP_PROPS][2])) |
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if data[CLASSES][i][GROUP_TYPE] == "default": |
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g = ClassGroupDefault(props, data[CLASSES][i][GROUP_LABEL]) |
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elif data[CLASSES][i][GROUP_TYPE] == "range": |
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g = ClassGroupRange(data[CLASSES][i][GROUP_DATA][0], |
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data[CLASSES][i][GROUP_DATA][1], |
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props, data[CLASSES][i][GROUP_LABEL]) |
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elif data[CLASSES][i][GROUP_TYPE] == "single": |
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g = ClassGroupSingleton(data[CLASSES][i][GROUP_DATA], |
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props, data[CLASSES][i][GROUP_LABEL]) |
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eq(group, g) |
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i += 1 |
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class TestSingleLayer(LoadSessionTest): |
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file_contents = '''\ |
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<?xml version="1.0" encoding="UTF-8"?> |
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<!DOCTYPE session SYSTEM "thuban.dtd"> |
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<session title="single map&layer"> |
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<map title="Test Map"> |
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<projection name="Unknown"> |
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<parameter value="zone=26"/> |
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<parameter value="proj=utm"/> |
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<parameter value="ellps=clrk66"/> |
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</projection> |
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<layer title="My Layer" stroke_width="1" fill="None" |
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filename="../../Data/iceland/political.shp" |
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stroke="#000000" visible="true"/> |
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</map> |
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</session> |
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''' |
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def test(self): |
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"""Load a session with a single map with a single layer""" |
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eq = self.assertEquals |
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session = load_session(self.filename()) |
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self.session = session |
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# Check the title |
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eq(session.Title(), "single map&layer") |
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# the session has one map. |
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maps = session.Maps() |
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eq(len(maps), 1) |
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# Check the map's attributes |
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map = maps[0] |
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eq(map.Title(), "Test Map") |
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# the map has a single layer |
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layers = map.Layers() |
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eq(len(layers), 1) |
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# Check the layer attributes |
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layer = layers[0] |
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eq(layer.Title(), "My Layer") |
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self.failUnless(filenames_equal(layer.ShapeStore().FileName(), |
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os.path.join(self.temp_dir(), |
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os.pardir, os.pardir, |
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"Data", "iceland", |
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"political.shp"))) |
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eq(layer.GetClassification().GetDefaultFill(), Color.Transparent) |
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eq(layer.GetClassification().GetDefaultLineColor().hex(), "#000000") |
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eq(layer.Visible(), True) |
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self.check_format() |
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self.session.Destroy() |
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self.session = None |
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class TestLayerVisibility(LoadSessionTest): |
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file_contents = '''\ |
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<?xml version="1.0" encoding="UTF-8"?> |
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<!DOCTYPE session SYSTEM "thuban.dtd"> |
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<session title="single map&layer"> |
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<map title="Test Map"> |
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<projection name="Unknown"> |
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<parameter value="zone=26"/> |
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<parameter value="proj=utm"/> |
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<parameter value="ellps=clrk66"/> |
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</projection> |
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<layer title="My Layer" stroke_width="1" fill="None" |
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filename="../../Data/iceland/political.shp" |
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stroke="#000000" visible="false"> |
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</layer> |
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</map> |
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</session> |
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''' |
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def test(self): |
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"""Test that the visible flag is correctly loaded for a layer.""" |
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eq = self.assertEquals |
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session = load_session(self.filename()) |
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self.session = session |
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maps = session.Maps() |
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eq(len(maps), 1) |
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map = maps[0] |
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layers = map.Layers() |
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eq(len(layers), 1) |
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layer = layers[0] |
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eq(layer.Visible(), False) |
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self.check_format() |
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class TestClassification(ClassificationTest): |
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file_contents = '''\ |
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<?xml version="1.0" encoding="UTF-8"?> |
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<!DOCTYPE session SYSTEM "thuban.dtd"> |
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<session title="single map&layer"> |
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<map title="Test Map"> |
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<projection> |
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<parameter value="zone=26"/> |
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<parameter value="proj=utm"/> |
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<parameter value="ellps=clrk66"/> |
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</projection> |
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<layer title="My Layer" stroke_width="1" fill="None" |
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filename="../../Data/iceland/political.shp" |
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stroke="#000000"> |
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<classification field="POPYREG" field_type="string"> |
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<clnull> |
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<cldata stroke="#000000" stroke_width="1" fill="None"/> |
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</clnull> |
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<clpoint value="1"> |
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<cldata stroke="#000000" stroke_width="2" fill="None"/> |
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</clpoint> |
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<clpoint value="1"> |
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<cldata stroke="#000000" stroke_width="10" fill="None"/> |
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</clpoint> |
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</classification> |
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</layer> |
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<layer title="My Layer 2" stroke_width="1" fill="None" |
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filename="../../Data/iceland/political.shp" |
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stroke="#000000"> |
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<classification field="AREA" field_type="double"> |
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<clnull> |
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<cldata stroke="#000000" stroke_width="2" fill="None"/> |
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</clnull> |
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<clrange min="0" max="1"> |
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<cldata stroke="#111111" stroke_width="1" fill="None"/> |
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</clrange> |
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<clpoint value=".5"> |
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<cldata stroke="#000000" stroke_width="1" fill="#111111"/> |
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</clpoint> |
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<clrange min="-1" max="0"> |
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<cldata stroke="#000000" stroke_width="1" fill="None"/> |
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</clrange> |
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<clpoint value="-.5"> |
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<cldata stroke="#000000" stroke_width="1" fill="None"/> |
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</clpoint> |
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</classification> |
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</layer> |
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</map> |
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</session> |
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''' |
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def test(self): |
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"""Load a Thuban session with a map and classified layers.""" |
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session = load_session(self.filename()) |
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self.session = session |
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map = self.session.Maps()[0] # only one map in the sample |
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expected = [("My Layer", 2, |
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[("default", (), "", |
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("#000000", 1, "None")), |
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("single", "1", "", |
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("#000000", 2, "None")), |
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("single", "1", "", |
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("#000000", 10, "None"))]), |
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("My Layer 2", 4, |
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[("default", (), "", |
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("#000000", 2, "None")), |
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("range", (0, 1), "", |
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("#111111", 1, "None")), |
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("single", .5, "", |
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("#000000", 1, "#111111")), |
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("range", (-1, 0), "", |
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("#000000", 1, "None")), |
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("single", -.5, "", |
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("#000000", 1, "None"))])] |
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self.TestLayers(map.Layers(), expected) |
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class TestLabels(ClassificationTest): |
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file_contents = '''\ |
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<?xml version="1.0" encoding="UTF-8"?> |
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<!DOCTYPE session SYSTEM "thuban.dtd"> |
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<session title="single map&layer"> |
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<map title="Test Map"> |
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<projection name="Unknown"> |
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<parameter value="zone=26"/> |
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<parameter value="proj=utm"/> |
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<parameter value="ellps=clrk66"/> |
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</projection> |
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<layer title="My Layer" stroke_width="1" fill="None" |
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filename="../../Data/iceland/political.shp" |
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stroke="#000000" visible="true"> |
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<classification field="POPYREG" field_type="string"> |
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<clnull label="hallo"> |
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<cldata stroke="#000000" stroke_width="1" fill="None"/> |
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</clnull> |
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<clpoint label="welt" value="1"> |
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<cldata stroke="#000000" stroke_width="2" fill="None"/> |
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</clpoint> |
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</classification> |
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</layer> |
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</map> |
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</session> |
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''' |
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def test(self): |
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"""Load a session and test for reading the group labels.""" |
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eq = self.assertEquals |
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session = load_session(self.filename()) |
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self.session = session |
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map = self.session.Maps()[0] # only one map in the sample |
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expected = [("My Layer", 1, |
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[("default", (), "hallo", |
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("#000000", 1, "None")), |
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("single", "1", "welt", |
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("#000000", 2, "None"))])] |
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self.TestLayers(map.Layers(), expected) |
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self.check_format() |
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class TestLayerProjection(LoadSessionTest): |
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file_contents = '''\ |
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<?xml version="1.0" encoding="UTF-8"?> |
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<!DOCTYPE session SYSTEM "thuban.dtd"> |
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<session title="single map&layer"> |
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<map title="Test Map"> |
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<projection name="Unknown"> |
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<parameter value="zone=26"/> |
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<parameter value="proj=utm"/> |
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<parameter value="ellps=clrk66"/> |
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</projection> |
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<layer title="My Layer" stroke_width="1" fill="None" |
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filename="../../Data/iceland/political.shp" |
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bh |
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stroke="#000000" visible="true"> |
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jonathan |
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<projection name="hello"> |
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|
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<parameter value="zone=13"/> |
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|
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<parameter value="proj=tmerc"/> |
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|
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<parameter value="ellps=clrk66"/> |
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|
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</projection> |
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|
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<classification field="POPYREG" field_type="string"> |
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|
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<clnull label="hallo"> |
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|
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<cldata stroke="#000000" stroke_width="1" fill="None"/> |
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|
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</clnull> |
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|
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<clpoint label="welt" value="1"> |
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|
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<cldata stroke="#000000" stroke_width="2" fill="None"/> |
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|
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</clpoint> |
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|
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</classification> |
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|
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</layer> |
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|
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<layer title="My Layer" stroke_width="1" fill="None" |
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|
|
filename="../../Data/iceland/political.shp" |
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bh |
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stroke="#000000" visible="true"> |
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|
|
<projection name="Unknown"> |
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jonathan |
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<parameter value="proj=lcc"/> |
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|
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<parameter value="ellps=clrk66"/> |
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|
|
</projection> |
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|
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</layer> |
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|
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</map> |
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|
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</session> |
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|
|
''' |
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|
|
|
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bh |
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def test(self): |
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|
|
"""Test loading layers with projections""" |
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bh |
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eq = self.assertEquals |
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neq = self.assertNotEqual |
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|
|
|
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bh |
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session = load_session(self.filename()) |
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self.session = session |
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|
|
|
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|
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map = self.session.Maps()[0] # only one map in the sample |
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|
|
|
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|
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layers = map.Layers() # two layers in the sample |
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|
|
|
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|
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# test layer with a named projection |
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|
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proj = layers[0].GetProjection() |
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neq(proj, None) |
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eq(proj.GetName(), "hello") |
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|
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eq(proj.GetParameter("proj"), "tmerc") |
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|
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eq(proj.GetParameter("zone"), "13") |
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|
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eq(proj.GetParameter("ellps"), "clrk66") |
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|
|
|
| 425 |
|
|
# test layer with an unnamed projection |
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|
|
proj = layers[1].GetProjection() |
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|
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neq(proj, None) |
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|
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eq(proj.GetName(), "Unknown") |
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|
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eq(proj.GetParameter("proj"), "lcc") |
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|
|
eq(proj.GetParameter("ellps"), "clrk66") |
| 431 |
|
|
|
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bh |
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self.check_format() |
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bh |
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|
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bh |
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|
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bh |
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class TestRasterLayer(LoadSessionTest): |
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|
|
|
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|
file_contents = '''\ |
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|
<?xml version="1.0" encoding="UTF-8"?> |
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|
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<!DOCTYPE session SYSTEM "thuban.dtd"> |
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|
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<session title="single map&layer"> |
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|
|
<map title="Test Map"> |
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|
|
<rasterlayer title="My RasterLayer" |
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filename="../../Data/iceland/island.tif" |
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|
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visible="false"> |
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|
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</rasterlayer> |
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|
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</map> |
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|
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</session> |
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|
|
''' |
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|
|
|
| 450 |
|
|
def test(self): |
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eq = self.assertEquals |
| 452 |
|
|
neq = self.assertNotEqual |
| 453 |
|
|
|
| 454 |
bh |
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session = load_session(self.filename()) |
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jonathan |
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self.session = session |
| 456 |
|
|
|
| 457 |
|
|
map = self.session.Maps()[0] # only one map in the sample |
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|
|
|
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layer = map.Layers()[0] # one layer in the sample |
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|
|
|
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eq(layer.Title(), "My RasterLayer") |
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|
|
self.failIf(layer.Visible()) |
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|
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self.failUnless(filenames_equal(layer.GetImageFilename(), |
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|
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os.path.join(self.temp_dir(), |
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|
|
os.pardir, os.pardir, |
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|
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"Data", "iceland", |
| 467 |
|
|
"island.tif"))) |
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bh |
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self.check_format() |
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|
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bh |
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if __name__ == "__main__": |
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|
|
unittest.main() |
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