WIP-pyshapelib-bramz/test/test_session.py

# Copyright (c) 2002, 2003 by Intevation GmbH
# Authors:
# Bernhard Herzog <[email protected]>
#
# This program is free software under the GPL (>=v2)
# Read the file COPYING coming with Thuban for details.

"""
Test the Session class
"""

__version__ = "$Revision$"
# $Source$
# $Id$

import os
import unittest

import support
support.initthuban()

from Thuban.Model.messages import CHANGED, MAPS_CHANGED, FILENAME_CHANGED, \
     MAP_PROJECTION_CHANGED, MAP_LAYERS_CHANGED, \
     LAYER_VISIBILITY_CHANGED, LAYER_CHANGED
from Thuban.Model.session import Session
from Thuban.Model.map import Map
from Thuban.Model.layer import Layer
from Thuban.Model.proj import Projection
from Thuban.Model.color import Color
from Thuban.Model.table import MemoryTable, FIELDTYPE_STRING, \
                               FIELDTYPE_INT, FIELDTYPE_DOUBLE
from Thuban.Model.data import DerivedShapeStore


class TestSessionSimple(unittest.TestCase):

    """Very simple test cases for Session"""

    def setUp(self):
        """Initialize self.session to None"""
        self.session = None

    def tearDown(self):
        """Call self.session.Destroy() and reset self.session to None"""
        self.session.Destroy()
        self.session = None

    def test_initial_state(self):
        """Test Session's initial state"""
        session = self.session = Session("Test Session")
        self.assertEquals(session.Title(), "Test Session")
        self.assertEquals(session.Maps(), [])
        self.assertEquals(session.Tables(), [])
        self.assertEquals(session.ShapeStores(), [])
        self.assertEquals(session.filename, None)
        self.failIf(session.HasMaps())
        self.failIf(session.WasModified())

    def test_add_table(self):
        """Test Session.AddTable()"""
        session = self.session = Session("Test Session")
        memtable = MemoryTable([("type", FIELDTYPE_STRING),
                                ("value", FIELDTYPE_DOUBLE),
                                ("code", FIELDTYPE_INT)],
                               [("OTHER/UNKNOWN", -1.5, 11),
                                ("RUINS", 0.0, 1),
                                ("FARM", 3.141, 2),
                                ("BUILDING", 2.5, 3),
                                ("HUT", 1e6, 4),
                                ("LIGHTHOUSE", -0.01, 5)])
        table = session.AddTable(memtable)
        self.assertEquals(session.Tables(), [table])

    def test_open_table_file(self):
        """Test Session.OpenTableFile()"""
        session = self.session = Session("Test Session")
        filename = os.path.join("..", "Data", "iceland",
                                "roads-line.dbf")
        table = session.OpenTableFile(filename)
        self.assertEquals(session.Tables(), [table])

    def test_remove_table(self):
        """Test Session.RemoveTable()"""
        session = self.session = Session("Test Session")
        memtable = MemoryTable([("type", FIELDTYPE_STRING),
                                ("value", FIELDTYPE_DOUBLE),
                                ("code", FIELDTYPE_INT)],
                               [("OTHER/UNKNOWN", -1.5, 11),
                                ("RUINS", 0.0, 1),
                                ("FARM", 3.141, 2),
                                ("BUILDING", 2.5, 3),
                                ("HUT", 1e6, 4),
                                ("LIGHTHOUSE", -0.01, 5)])
        table = session.AddTable(memtable)
        self.assertEquals(session.Tables(), [table])
        session.RemoveTable(table)
        self.assertEquals(session.Tables(), [])
        self.assertRaises(ValueError, session.RemoveTable, table)

    def test_open_shapefile(self):
        """Test Session.OpenShapefile()"""
        session = self.session = Session("Test Session")
        filename = os.path.join("..", "Data", "iceland",
                                "roads-line.shp")
        store = session.OpenShapefile(filename)
        self.assertEquals(store.FileName(), os.path.abspath(filename))
        # The filetype of a shapefile is "shapefile"
        self.assertEquals(store.FileType(), "shapefile")
        # The shapestore itself depends on nothing else
        self.assertEquals(store.Dependencies(), ())
        # The shapestore's table depends on the shapestore
        self.assertEquals(store.Table().Dependencies(), (store,))

        self.assertEquals(session.Tables(), [store.Table()])

    def test_add_shapestore(self):
        """Test Session.AddShapeStore()"""
        session = self.session = Session("Test Session")
        filename = os.path.join("..", "Data", "iceland",
                                "roads-line.shp")
        try:
            store = session.OpenShapefile(filename)
            derived = DerivedShapeStore(store, store.Table())
            session.AddShapeStore(derived)
            self.assertEquals(session.ShapeStores(), [store, derived])
        finally:
            store = derived = None


class TestSessionBase(unittest.TestCase, support.SubscriberMixin):

    """Base class for Session test cases that test the messages"""

    def setUp(self):
        """
        Clear the message list, create a session and subscribe to its messages

        Bind the session to self.session.
        """
        self.clear_messages()

        # Create a Session and subscribe to all interesting channels.
        self.session = Session("Test Session")
        for channel in (CHANGED, 
                        MAPS_CHANGED,  
                        FILENAME_CHANGED,
                        MAP_PROJECTION_CHANGED, 
                        MAP_LAYERS_CHANGED,
                        LAYER_VISIBILITY_CHANGED, 
                        LAYER_CHANGED):
            self.session.Subscribe(channel,
                                   self.subscribe_with_params, channel)

    def tearDown(self):
        """Destroy self.session and clear the message list"""
        self.session.Destroy()
        self.session = None
        self.clear_messages()


class TestSessionMessages(TestSessionBase):

    """Simple Session test cases that test messges"""

    def test_add_map(self):
        """Test Session.AddMap"""
        self.failIf(self.session.WasModified())
        map = Map("Some Map")
        self.session.AddMap(map)
        self.assert_(self.session.HasMaps())
        self.assert_(self.session.WasModified())
        self.assertEquals(self.session.Maps(), [map])
        self.check_messages([(MAPS_CHANGED,),
                             (self.session, CHANGED)])

    def test_set_filename(self):
        """Test Session.SetFilename"""
        self.session.SetFilename("session_set_filename_test")
        self.session.filename = "session_set_filename_test"
        self.check_messages([(FILENAME_CHANGED,),
                             (self.session, CHANGED)])


class TestSessionWithContent(TestSessionBase):

    """Session test cases that start with a filled session."""

    def setUp(self):
        """Extend the inherited method to add a non-empty map to self.session
        """
        TestSessionBase.setUp(self)
        open_shp = self.session.OpenShapefile
        self.arc_layer = Layer("Roads",
                               open_shp(os.path.join("..", "Data", "iceland",
                                                     "roads-line.shp")))
        self.poly_layer = Layer("Political",
                                open_shp(os.path.join("..", "Data", "iceland",
                                                      "political.shp")))
        self.map = Map("A Map")
        self.map.AddLayer(self.arc_layer)
        self.map.AddLayer(self.poly_layer)
        self.session.AddMap(self.map)
        self.session.UnsetModified()
        self.clear_messages()

    def tearDown(self):
        TestSessionBase.tearDown(self)
        self.arc_layer = self.poly_layer = None

    def test_remove_map(self):
        """Test Session.RemoveMap"""
        self.session.RemoveMap(self.map)
        self.assert_(self.session.WasModified())
        self.failIf(self.session.HasMaps())
        self.check_messages([(MAPS_CHANGED,),
                             (self.session, CHANGED)])

    def test_tree_info(self):
        """Test Session.TreeInfo"""
        self.assertEquals(self.session.TreeInfo(),
                          ('Session: Test Session',
                           ['Filename:',
                            'Unmodified',
                            self.map]))

    def test_forward_map_projection(self):
        """Test Session forwarding of Map.SetProjection messages"""
        proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"])
        self.map.SetProjection(proj)
        self.check_messages([(self.map, MAP_PROJECTION_CHANGED),
                             (self.session, CHANGED)])
        self.assert_(self.session.WasModified())

    def test_forward_map_projection(self):
        """Test Session forwarding of Map.SetProjection messages"""
        proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"])
        self.map.SetProjection(proj)
        self.assert_(self.session.WasModified())
        self.check_messages([(self.map, MAP_PROJECTION_CHANGED),
                             (self.session, CHANGED)])

    def test_forwarding_fill(self):
        """Test Session's forwarding of Layer.SetFill messages"""
        self.poly_layer.GetClassification().SetDefaultFill(Color(0.0, 0.5, 1.0))
        self.assert_(self.session.WasModified())
        self.check_messages([(self.poly_layer, LAYER_CHANGED),
                             (self.session, CHANGED)])

    def test_forwarding_stroke(self):
        """Test Session's forwarding of Layer.SetStroke messages"""
        self.poly_layer.GetClassification().\
            SetDefaultLineColor(Color(0.0, 0.5, 1.0))
        self.assert_(self.session.WasModified())
        self.check_messages([(self.poly_layer, LAYER_CHANGED),
                             (self.session, CHANGED)])

    def test_forwarding_stroke_width(self):
        """Test Session's forwarding of Layer.SetStrokeWidth messages"""
        self.poly_layer.GetClassification().SetDefaultLineWidth(3)
        self.assert_(self.session.WasModified())
        self.check_messages([(self.poly_layer, LAYER_CHANGED),
                             (self.session, CHANGED)])

    def test_forwarding_visibility(self):
        """Test Session's forwarding of Layer.SetVisible messages"""
        self.poly_layer.SetVisible(0)
        # Currently changing the visibility of a layer doesn't change
        # the modification flag.
        self.failIf(self.session.WasModified())
        self.check_messages([(self.poly_layer, LAYER_VISIBILITY_CHANGED),
                             (self.session, CHANGED)])

    def test_unset_modified_map(self):
        """Test Session.UnsetModified with map level changes"""
        self.failIf(self.session.WasModified())
        proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"])
        self.map.SetProjection(proj)
        self.assert_(self.session.WasModified())
        self.session.UnsetModified()
        self.failIf(self.session.WasModified())

    def test_unset_modified_layer(self):
        """Test Session.UnsetModified with layer level changes"""
        self.failIf(self.session.WasModified())
        self.poly_layer.GetClassification().SetDefaultLineWidth(3)
        self.assert_(self.session.WasModified())
        self.session.UnsetModified()
        self.failIf(self.session.WasModified())
        self.check_messages([(self.poly_layer, LAYER_CHANGED),
                             (self.session, CHANGED),
                             (CHANGED,)])

    def test_shape_stores(self):
        """Test Session.ShapeStores()"""
        # Strictly speaking the session doesn't make guarantees about
        # the order of the ShapeStores in the list, but currently it's
        # deterministic and they're listed in the order in which they
        # were created
        self.assertEquals(self.session.ShapeStores(),
                          [self.arc_layer.ShapeStore(),
                           self.poly_layer.ShapeStore()])
        # If we remove the map from the session and clear our instance
        # variables that hold the layers and the map the list should
        # become empty again.
        self.session.RemoveMap(self.map)
        self.arc_layer = self.poly_layer = self.map = None
        self.assertEquals(self.session.ShapeStores(), [])

    def test_tables(self):
        """Test Session.Tables()"""
        # Strictly speaking the session doesn't make guarantees about
        # the order of the tables in the list, but currently it's
        # deterministic and they're listed in the order in which they
        # were opened
        self.assertEquals(self.session.Tables(),
                          [self.arc_layer.ShapeStore().Table(),
                           self.poly_layer.ShapeStore().Table()])
        # If we remove the map from the session and clear our instance
        # variables that hold the layers and the map the list should
        # become empty again.
        self.session.RemoveMap(self.map)
        self.arc_layer = self.poly_layer = self.map = None
        self.assertEquals(self.session.Tables(), [])


if __name__ == "__main__":
    unittest.main()
1	bh	723	# Copyright (c) 2002, 2003 by Intevation GmbH
2	bh	334	# Authors:
3			# Bernhard Herzog <[email protected]>
4			#
5			# This program is free software under the GPL (>=v2)
6			# Read the file COPYING coming with Thuban for details.
7
8			"""
9			Test the Session class
10			"""
11
12			__version__ = "$Revision$"
13			# $Source$
14			# $Id$
15
16			import os
17			import unittest
18
19			import support
20			support.initthuban()
21
22			from Thuban.Model.messages import CHANGED, MAPS_CHANGED, FILENAME_CHANGED, \
23	jonathan	584	MAP_PROJECTION_CHANGED, MAP_LAYERS_CHANGED, \
24			LAYER_VISIBILITY_CHANGED, LAYER_CHANGED
25	bh	334	from Thuban.Model.session import Session
26			from Thuban.Model.map import Map
27			from Thuban.Model.layer import Layer
28			from Thuban.Model.proj import Projection
29			from Thuban.Model.color import Color
30	bh	982	from Thuban.Model.table import MemoryTable, FIELDTYPE_STRING, \
31			FIELDTYPE_INT, FIELDTYPE_DOUBLE
32	bh	1016	from Thuban.Model.data import DerivedShapeStore
33	bh	334
34	bh	1016
35	bh	334	class TestSessionSimple(unittest.TestCase):
36
37			"""Very simple test cases for Session"""
38
39	bh	984	def setUp(self):
40			"""Initialize self.session to None"""
41			self.session = None
42
43			def tearDown(self):
44			"""Call self.session.Destroy() and reset self.session to None"""
45			self.session.Destroy()
46			self.session = None
47
48	bh	334	def test_initial_state(self):
49			"""Test Session's initial state"""
50	bh	984	session = self.session = Session("Test Session")
51	bh	334	self.assertEquals(session.Title(), "Test Session")
52			self.assertEquals(session.Maps(), [])
53	bh	851	self.assertEquals(session.Tables(), [])
54			self.assertEquals(session.ShapeStores(), [])
55	bh	334	self.assertEquals(session.filename, None)
56			self.failIf(session.HasMaps())
57			self.failIf(session.WasModified())
58
59	bh	982	def test_add_table(self):
60			"""Test Session.AddTable()"""
61	bh	984	session = self.session = Session("Test Session")
62	bh	982	memtable = MemoryTable([("type", FIELDTYPE_STRING),
63			("value", FIELDTYPE_DOUBLE),
64			("code", FIELDTYPE_INT)],
65			[("OTHER/UNKNOWN", -1.5, 11),
66			("RUINS", 0.0, 1),
67			("FARM", 3.141, 2),
68			("BUILDING", 2.5, 3),
69			("HUT", 1e6, 4),
70			("LIGHTHOUSE", -0.01, 5)])
71			table = session.AddTable(memtable)
72			self.assertEquals(session.Tables(), [table])
73	bh	334
74	bh	1039	def test_open_table_file(self):
75			"""Test Session.OpenTableFile()"""
76			session = self.session = Session("Test Session")
77			filename = os.path.join("..", "Data", "iceland",
78			"roads-line.dbf")
79			table = session.OpenTableFile(filename)
80			self.assertEquals(session.Tables(), [table])
81
82	bh	987	def test_remove_table(self):
83			"""Test Session.RemoveTable()"""
84			session = self.session = Session("Test Session")
85			memtable = MemoryTable([("type", FIELDTYPE_STRING),
86			("value", FIELDTYPE_DOUBLE),
87			("code", FIELDTYPE_INT)],
88			[("OTHER/UNKNOWN", -1.5, 11),
89			("RUINS", 0.0, 1),
90			("FARM", 3.141, 2),
91			("BUILDING", 2.5, 3),
92			("HUT", 1e6, 4),
93			("LIGHTHOUSE", -0.01, 5)])
94			table = session.AddTable(memtable)
95			self.assertEquals(session.Tables(), [table])
96			session.RemoveTable(table)
97			self.assertEquals(session.Tables(), [])
98			self.assertRaises(ValueError, session.RemoveTable, table)
99
100	bh	984	def test_open_shapefile(self):
101			"""Test Session.OpenShapefile()"""
102			session = self.session = Session("Test Session")
103			filename = os.path.join("..", "Data", "iceland",
104			"roads-line.shp")
105			store = session.OpenShapefile(filename)
106			self.assertEquals(store.FileName(), os.path.abspath(filename))
107			# The filetype of a shapefile is "shapefile"
108			self.assertEquals(store.FileType(), "shapefile")
109			# The shapestore itself depends on nothing else
110			self.assertEquals(store.Dependencies(), ())
111			# The shapestore's table depends on the shapestore
112			self.assertEquals(store.Table().Dependencies(), (store,))
113	bh	982
114	bh	984	self.assertEquals(session.Tables(), [store.Table()])
115
116	bh	1016	def test_add_shapestore(self):
117			"""Test Session.AddShapeStore()"""
118			session = self.session = Session("Test Session")
119			filename = os.path.join("..", "Data", "iceland",
120			"roads-line.shp")
121			try:
122			store = session.OpenShapefile(filename)
123			derived = DerivedShapeStore(store, store.Table())
124			session.AddShapeStore(derived)
125			self.assertEquals(session.ShapeStores(), [store, derived])
126			finally:
127			store = derived = None
128	bh	984
129	bh	1016
130	bh	334	class TestSessionBase(unittest.TestCase, support.SubscriberMixin):
131
132			"""Base class for Session test cases that test the messages"""
133
134			def setUp(self):
135			"""
136			Clear the message list, create a session and subscribe to its messages
137
138			Bind the session to self.session.
139			"""
140			self.clear_messages()
141
142			# Create a Session and subscribe to all interesting channels.
143			self.session = Session("Test Session")
144	jonathan	584	for channel in (CHANGED,
145			MAPS_CHANGED,
146			FILENAME_CHANGED,
147			MAP_PROJECTION_CHANGED,
148			MAP_LAYERS_CHANGED,
149			LAYER_VISIBILITY_CHANGED,
150			LAYER_CHANGED):
151	bh	334	self.session.Subscribe(channel,
152			self.subscribe_with_params, channel)
153
154			def tearDown(self):
155			"""Destroy self.session and clear the message list"""
156			self.session.Destroy()
157	bh	723	self.session = None
158	bh	334	self.clear_messages()
159
160
161			class TestSessionMessages(TestSessionBase):
162
163			"""Simple Session test cases that test messges"""
164
165			def test_add_map(self):
166			"""Test Session.AddMap"""
167			self.failIf(self.session.WasModified())
168			map = Map("Some Map")
169			self.session.AddMap(map)
170			self.assert_(self.session.HasMaps())
171			self.assert_(self.session.WasModified())
172			self.assertEquals(self.session.Maps(), [map])
173			self.check_messages([(MAPS_CHANGED,),
174			(self.session, CHANGED)])
175
176			def test_set_filename(self):
177			"""Test Session.SetFilename"""
178			self.session.SetFilename("session_set_filename_test")
179			self.session.filename = "session_set_filename_test"
180			self.check_messages([(FILENAME_CHANGED,),
181			(self.session, CHANGED)])
182
183
184			class TestSessionWithContent(TestSessionBase):
185
186			"""Session test cases that start with a filled session."""
187
188			def setUp(self):
189			"""Extend the inherited method to add a non-empty map to self.session
190			"""
191			TestSessionBase.setUp(self)
192	bh	723	open_shp = self.session.OpenShapefile
193	bh	334	self.arc_layer = Layer("Roads",
194	bh	723	open_shp(os.path.join("..", "Data", "iceland",
195			"roads-line.shp")))
196	bh	334	self.poly_layer = Layer("Political",
197	bh	723	open_shp(os.path.join("..", "Data", "iceland",
198			"political.shp")))
199	bh	334	self.map = Map("A Map")
200			self.map.AddLayer(self.arc_layer)
201			self.map.AddLayer(self.poly_layer)
202			self.session.AddMap(self.map)
203			self.session.UnsetModified()
204			self.clear_messages()
205
206	bh	723	def tearDown(self):
207			TestSessionBase.tearDown(self)
208			self.arc_layer = self.poly_layer = None
209
210	bh	334	def test_remove_map(self):
211			"""Test Session.RemoveMap"""
212			self.session.RemoveMap(self.map)
213			self.assert_(self.session.WasModified())
214			self.failIf(self.session.HasMaps())
215			self.check_messages([(MAPS_CHANGED,),
216			(self.session, CHANGED)])
217
218			def test_tree_info(self):
219			"""Test Session.TreeInfo"""
220			self.assertEquals(self.session.TreeInfo(),
221			('Session: Test Session',
222			['Filename:',
223			'Unmodified',
224			self.map]))
225
226			def test_forward_map_projection(self):
227			"""Test Session forwarding of Map.SetProjection messages"""
228			proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"])
229			self.map.SetProjection(proj)
230			self.check_messages([(self.map, MAP_PROJECTION_CHANGED),
231			(self.session, CHANGED)])
232			self.assert_(self.session.WasModified())
233
234			def test_forward_map_projection(self):
235			"""Test Session forwarding of Map.SetProjection messages"""
236			proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"])
237			self.map.SetProjection(proj)
238			self.assert_(self.session.WasModified())
239			self.check_messages([(self.map, MAP_PROJECTION_CHANGED),
240			(self.session, CHANGED)])
241
242			def test_forwarding_fill(self):
243			"""Test Session's forwarding of Layer.SetFill messages"""
244	jonathan	409	self.poly_layer.GetClassification().SetDefaultFill(Color(0.0, 0.5, 1.0))
245	bh	334	self.assert_(self.session.WasModified())
246	jonathan	584	self.check_messages([(self.poly_layer, LAYER_CHANGED),
247	bh	334	(self.session, CHANGED)])
248
249			def test_forwarding_stroke(self):
250			"""Test Session's forwarding of Layer.SetStroke messages"""
251	jonathan	409	self.poly_layer.GetClassification().\
252	jonathan	482	SetDefaultLineColor(Color(0.0, 0.5, 1.0))
253	bh	334	self.assert_(self.session.WasModified())
254	jonathan	584	self.check_messages([(self.poly_layer, LAYER_CHANGED),
255	bh	334	(self.session, CHANGED)])
256
257			def test_forwarding_stroke_width(self):
258			"""Test Session's forwarding of Layer.SetStrokeWidth messages"""
259	jonathan	482	self.poly_layer.GetClassification().SetDefaultLineWidth(3)
260	bh	334	self.assert_(self.session.WasModified())
261	jonathan	584	self.check_messages([(self.poly_layer, LAYER_CHANGED),
262	bh	334	(self.session, CHANGED)])
263
264			def test_forwarding_visibility(self):
265			"""Test Session's forwarding of Layer.SetVisible messages"""
266			self.poly_layer.SetVisible(0)
267			# Currently changing the visibility of a layer doesn't change
268			# the modification flag.
269			self.failIf(self.session.WasModified())
270			self.check_messages([(self.poly_layer, LAYER_VISIBILITY_CHANGED),
271			(self.session, CHANGED)])
272
273			def test_unset_modified_map(self):
274			"""Test Session.UnsetModified with map level changes"""
275			self.failIf(self.session.WasModified())
276			proj = Projection(["zone=26", "proj=utm", "ellps=clrk66"])
277			self.map.SetProjection(proj)
278			self.assert_(self.session.WasModified())
279			self.session.UnsetModified()
280			self.failIf(self.session.WasModified())
281
282			def test_unset_modified_layer(self):
283			"""Test Session.UnsetModified with layer level changes"""
284			self.failIf(self.session.WasModified())
285	jonathan	482	self.poly_layer.GetClassification().SetDefaultLineWidth(3)
286	bh	334	self.assert_(self.session.WasModified())
287			self.session.UnsetModified()
288			self.failIf(self.session.WasModified())
289	jonathan	584	self.check_messages([(self.poly_layer, LAYER_CHANGED),
290	bh	334	(self.session, CHANGED),
291			(CHANGED,)])
292
293	bh	851	def test_shape_stores(self):
294			"""Test Session.ShapeStores()"""
295			# Strictly speaking the session doesn't make guarantees about
296			# the order of the ShapeStores in the list, but currently it's
297			# deterministic and they're listed in the order in which they
298			# were created
299			self.assertEquals(self.session.ShapeStores(),
300			[self.arc_layer.ShapeStore(),
301			self.poly_layer.ShapeStore()])
302			# If we remove the map from the session and clear our instance
303			# variables that hold the layers and the map the list should
304			# become empty again.
305			self.session.RemoveMap(self.map)
306			self.arc_layer = self.poly_layer = self.map = None
307			self.assertEquals(self.session.ShapeStores(), [])
308	bh	334
309	bh	851	def test_tables(self):
310			"""Test Session.Tables()"""
311			# Strictly speaking the session doesn't make guarantees about
312			# the order of the tables in the list, but currently it's
313			# deterministic and they're listed in the order in which they
314			# were opened
315			self.assertEquals(self.session.Tables(),
316			[self.arc_layer.ShapeStore().Table(),
317			self.poly_layer.ShapeStore().Table()])
318			# If we remove the map from the session and clear our instance
319			# variables that hold the layers and the map the list should
320			# become empty again.
321			self.session.RemoveMap(self.map)
322			self.arc_layer = self.poly_layer = self.map = None
323			self.assertEquals(self.session.Tables(), [])
324
325
326	bh	334	if __name__ == "__main__":
327			unittest.main()
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