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# Copyright (C) 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 the software for details. |
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|
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""" |
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Test cases for Thuban.UI.selection |
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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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from Thuban.Model.session import Session |
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from Thuban.Model.map import Map |
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from Thuban.Model.layer import Layer |
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from Thuban.UI.selection import Selection |
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from Thuban.UI.messages import LAYER_SELECTED, SHAPES_SELECTED |
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|
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|
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class TestSelection(unittest.TestCase, support.SubscriberMixin): |
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|
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def setUp(self): |
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"""Instantiate a selection. |
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|
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Test cases implemented in this class can access the selection as |
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self.selection. |
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|
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Also, subscribe self.subscribe_with_params to some of the |
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selection's messages. |
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|
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Finally, create a list self.to_destroy with objects to be |
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destroyes by calling their destroy method in tearDown() for |
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objects created in test cases that need to be destroyed. |
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""" |
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self.clear_messages() |
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self.selection = Selection() |
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for channel in (LAYER_SELECTED, SHAPES_SELECTED): |
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self.selection.Subscribe(channel, self.subscribe_with_params, |
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channel) |
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self.to_destroy = [self.selection] |
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|
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def tearDown(self): |
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"""Destroy all objects in self.to_destroy and clear the message list""" |
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for obj in self.to_destroy: |
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obj.Destroy() |
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self.to_destroy = None |
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self.session = None |
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self.selection = None |
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self.clear_messages() |
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|
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def get_layer(self): |
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"""Return a layer to have something to test with. |
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|
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Also, instantiate self.session if not done already. The layer |
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(and the session when it is created) are added to |
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self.to_destroy so that they are properly destroyed at the end |
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of the test. |
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|
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The layer should not be added to a map in the session to avoid a |
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situation where its destroy method is called twice. This |
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situation should not arise in the selection tests. |
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""" |
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if not hasattr(self, "session"): |
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self.session = Session("Test Session for %s" % self.__class__) |
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self.to_destroy.append(self.session) |
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filename = os.path.join("..", "Data", "iceland", "roads-line.shp") |
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layer = Layer("Selection Test Layer", |
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self.session.OpenShapefile(filename)) |
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self.to_destroy.append(layer) |
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return layer |
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|
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def test_instatiation(self): |
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"""Test initial state of the selection""" |
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self.assertEquals(self.selection.SelectedLayer(), None) |
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self.assertEquals(self.selection.SelectedShapes(), []) |
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self.failIf(self.selection.HasSelectedLayer()) |
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|
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# |
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# SelectLayer Tests |
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# |
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|
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def test_select_layer_without_current_selection(self): |
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"""Test Selection.SelectLayer() without current selection""" |
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layer = self.get_layer() |
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|
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self.selection.SelectLayer(layer) |
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# After selecting a layer, no shapes are selected |
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self.assertEquals(self.selection.SelectedLayer(), layer) |
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self.failUnless(self.selection.HasSelectedLayer()) |
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self.assertEquals(self.selection.SelectedShapes(), []) |
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# Since no shape was selected, only a LAYER_SELECTED message |
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# should have been issued. |
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self.check_messages([(layer, LAYER_SELECTED)]) |
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|
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def test_select_currently_selected_layer(self): |
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"""Test Selection.SelectLayer(<currently selected layer>)""" |
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layer = self.get_layer() |
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|
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self.selection.SelectLayer(layer) |
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self.clear_messages() |
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self.selection.SelectLayer(layer) |
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|
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# After selecting a layer, no shapes are selected |
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self.assertEquals(self.selection.SelectedLayer(), layer) |
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self.failUnless(self.selection.HasSelectedLayer()) |
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self.assertEquals(self.selection.SelectedShapes(), []) |
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# Since nothing has changed, really, no messages should have |
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# been issued |
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self.check_messages([]) |
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|
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def test_select_layer_with_previous_selection(self): |
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"""Test Selection.SelectLayer() with previous selection""" |
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self.selection.SelectShapes(self.get_layer(), [0]) |
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self.clear_messages() |
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|
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layer = self.get_layer() |
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self.selection.SelectLayer(layer) |
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|
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# After selecting a layer, no shapes are selected |
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self.assertEquals(self.selection.SelectedLayer(), layer) |
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self.failUnless(self.selection.HasSelectedLayer()) |
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self.assertEquals(self.selection.SelectedShapes(), []) |
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# Since a shape and a layer was selected, a LAYER_SELECTED and a |
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# SHAPES_SELECTED message should have been issued. |
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self.check_messages([(layer, LAYER_SELECTED), |
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(layer, [], SHAPES_SELECTED)]) |
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|
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def test_select_layer_with_None(self): |
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"""Test Selection.SelectLayer(None) |
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|
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Calling SelectLayer with None should deselect it. |
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""" |
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self.selection.SelectShapes(self.get_layer(), [0]) |
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self.clear_messages() |
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self.selection.SelectLayer(None) |
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|
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# After selecting a layer, no shapes are selected |
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self.assertEquals(self.selection.SelectedLayer(), None) |
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self.failIf(self.selection.HasSelectedLayer()) |
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self.assertEquals(self.selection.SelectedShapes(), []) |
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# Since no shape was selected, only a LAYER_SELECTED message |
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# should have been issued. |
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self.check_messages([(None, LAYER_SELECTED), |
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(None, [], SHAPES_SELECTED)]) |
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|
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# |
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# SelectShapes Tests |
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# |
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|
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def test_select_new_layer_and_new_shape(self): |
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"""Test Selection.SelectShapes(<new layer>, <new shapes>)""" |
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layer = self.get_layer() |
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|
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self.selection.SelectShapes(layer, [0, 3, 1]) |
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|
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self.assertEquals(self.selection.SelectedLayer(), layer) |
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self.failUnless(self.selection.HasSelectedLayer()) |
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self.assertEquals(self.selection.SelectedShapes(), [0, 1, 3]) |
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self.check_messages([(layer, LAYER_SELECTED), |
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(layer, [0, 1, 3], SHAPES_SELECTED)]) |
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|
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def test_select_old_layer_and_old_shape(self): |
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"""Test Selection.SelectShape(<old layer>, <old shapes>)""" |
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layer = self.get_layer() |
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|
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self.selection.SelectShapes(layer, [0, 10, 2]) |
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self.clear_messages() |
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# Deliberate use a different order of the shape ids to check |
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# whether they're still considered equal |
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self.selection.SelectShapes(layer, [2, 0, 10]) |
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|
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# Selecting an already selected layer and shapes should not |
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# result in any messages but still have the right layer and |
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# shapes selected |
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self.assertEquals(self.selection.SelectedLayer(), layer) |
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self.failUnless(self.selection.HasSelectedLayer()) |
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self.assertEquals(self.selection.SelectedShapes(), [0, 2, 10]) |
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self.check_messages([]) |
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|
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def test_select_old_layer_and_new_shape(self): |
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"""Test Selection.SelectShapes(<old layer>, <new shape>)""" |
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layer = self.get_layer() |
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|
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self.selection.SelectShapes(layer, [0]) |
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self.clear_messages() |
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self.selection.SelectShapes(layer, [1]) |
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# Selecting a different shape in the already selected layer |
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# should only produce a SHAPES_SELECTED message |
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# After selecting a shape, both a shape and a layer are selected |
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self.assertEquals(self.selection.SelectedLayer(), layer) |
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self.failUnless(self.selection.HasSelectedLayer()) |
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self.assertEquals(self.selection.SelectedShapes(), [1]) |
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self.check_messages([(layer, [1], SHAPES_SELECTED)]) |
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|
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# |
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# Adding Shapes Tests |
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# |
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|
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def test_add_shapes_new_layer_new_shapes(self): |
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"""Test Selection.SelectShapes(<same layer>, <new shapes>, add = 1)""" |
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layer = self.get_layer() |
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|
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self.selection.SelectShapes(layer, [10, 7], add = 1) |
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|
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self.assertEquals(self.selection.SelectedLayer(), layer) |
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self.failUnless(self.selection.HasSelectedLayer()) |
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# The list of selected shapes will be sorted in ascending order |
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self.assertEquals(self.selection.SelectedShapes(), [7, 10]) |
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self.check_messages([(layer, LAYER_SELECTED), |
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(layer, [7, 10], SHAPES_SELECTED)]) |
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|
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def test_add_shapes_same_layer_new_shapes(self): |
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"""Test Selection.SelectShapes(<same layer>, <new shapes>, add = 1)""" |
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layer = self.get_layer() |
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|
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self.selection.SelectShapes(layer, [0, 6, 5]) |
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self.clear_messages() |
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self.selection.SelectShapes(layer, [10, 7], add = 1) |
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|
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self.assertEquals(self.selection.SelectedLayer(), layer) |
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self.failUnless(self.selection.HasSelectedLayer()) |
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# The list of selected shapes will be sorted in ascending order |
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self.assertEquals(self.selection.SelectedShapes(), [0, 5, 6, 7, 10]) |
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self.check_messages([(layer, [0, 5, 6, 7, 10], SHAPES_SELECTED)]) |
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|
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def test_add_shapes_same_layer_already_selected_shapes(self): |
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"""Test Selection.SelectShapes(<same layer>, <some old shapes>, add=1) |
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""" |
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layer = self.get_layer() |
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|
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self.selection.SelectShapes(layer, [0, 6, 5]) |
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self.clear_messages() |
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|
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self.selection.SelectShapes(layer, [6, 0], add = 1) |
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|
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self.assertEquals(self.selection.SelectedLayer(), layer) |
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self.failUnless(self.selection.HasSelectedLayer()) |
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# The list of selected shapes will be sorted in ascending order |
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self.assertEquals(self.selection.SelectedShapes(), [0, 5, 6]) |
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self.check_messages([]) |
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|
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# |
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# ClearSelection Tests |
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# |
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|
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def test_clear_selection(self): |
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"""Test Selection.ClearSelection() when nothing is selected""" |
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self.selection.ClearSelection() |
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|
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# After clearing the selection nothing is selected |
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self.assertEquals(self.selection.SelectedLayer(), None) |
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self.failIf(self.selection.HasSelectedLayer()) |
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self.assertEquals(self.selection.SelectedShapes(), []) |
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# No messages should have been sent because the selection |
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# doesn't have changed due to the ClearSelection() |
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self.check_messages([]) |
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|
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def test_clear_selection_with_selected_layer(self): |
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"""Test Selection.ClearSelection() when a layer is selected""" |
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self.selection.ClearSelection() |
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|
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self.selection.SelectLayer(self.get_layer()) |
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self.clear_messages() |
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self.selection.ClearSelection() |
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|
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# After clearing the selection nothing is selected |
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self.assertEquals(self.selection.SelectedLayer(), None) |
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self.failIf(self.selection.HasSelectedLayer()) |
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self.assertEquals(self.selection.SelectedShapes(), []) |
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# No messages should have been sent because the selection |
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# doesn't have changed due to the ClearSelection() |
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self.check_messages([(None, LAYER_SELECTED)]) |
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|
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def test_clear_selection_with_selected_shape(self): |
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"""Test Selection.ClearSelection() when a layer is selected""" |
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self.selection.ClearSelection() |
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|
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self.selection.SelectShapes(self.get_layer(), [0]) |
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self.clear_messages() |
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self.selection.ClearSelection() |
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|
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# After clearing the selection nothing is selected |
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self.assertEquals(self.selection.SelectedLayer(), None) |
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self.failIf(self.selection.HasSelectedLayer()) |
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self.assertEquals(self.selection.SelectedShapes(), []) |
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# No messages should have been sent because the selection |
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# doesn't have changed due to the ClearSelection() |
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self.check_messages([(None, LAYER_SELECTED), |
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(None, [], SHAPES_SELECTED)]) |
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|
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|
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if __name__ == "__main__": |
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support.run_tests() |
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