/[thuban]/branches/WIP-pyshapelib-bramz/test/test_transientdb.py
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revision 785 by bh, Wed Apr 30 10:54:03 2003 UTC revision 948 by jonathan, Tue May 20 15:27:31 2003 UTC
# Line 19  import unittest Line 19  import unittest
19  import support  import support
20  support.initthuban()  support.initthuban()
21    
22  from Thuban.Model.table import DBFTable, FIELDTYPE_STRING, FIELDTYPE_INT  from Thuban.Model.table import DBFTable, MemoryTable, FIELDTYPE_STRING, \
23                                   FIELDTYPE_INT, FIELDTYPE_DOUBLE
24  from Thuban.Model.transientdb import TransientDatabase, TransientTable, \  from Thuban.Model.transientdb import TransientDatabase, TransientTable, \
25       TransientJoinedTable, AutoTransientTable       TransientJoinedTable, AutoTransientTable
26    
27    
 class SimpleTable:  
   
     """Very simple table implementation that operates on a list of tuples"""  
   
     def __init__(self, fields, data):  
         """Initialize the SimpleTable  
   
         Parameters:  
         fields -- List of (name, field_type) pairs  
         data -- List of tuples, one for each row of data  
         """  
         self.fields = fields  
         self.data = data  
   
     def field_count(self):  
         return len(self.fields)  
   
     def field_info(self, index):  
         name, type = self.fields[index]  
         return (type, name, 0, 0)  
   
     def record_count(self):  
         return len(self.data)  
   
     def read_record(self, index):  
         return dict([(self.fields[i][0], self.data[index][i])  
                       for i in range(len(self.fields))])  
   
   
28  class TestTransientTable(unittest.TestCase, support.FileTestMixin):  class TestTransientTable(unittest.TestCase, support.FileTestMixin):
29    
30      def setUp(self):      def setUp(self):
# Line 75  class TestTransientTable(unittest.TestCa Line 47  class TestTransientTable(unittest.TestCa
47          Assume that table holds the data of the file          Assume that table holds the data of the file
48          ../Data/iceland/political.dbf sample file.          ../Data/iceland/political.dbf sample file.
49          """          """
50          self.assertEquals(table.record_count(), 156)          self.assertEquals(table.NumRows(), 156)
51          self.assertEquals(table.field_count(), 8)          self.assertEquals(table.NumColumns(), 8)
52    
53          # Check one each of the possible field types. The width and          # Check one each of the possible field types. The width and
54          # decimal precision is always 0.          # decimal precision is always 0.
55          self.assertEquals(table.field_info(0), ('double', 'AREA', 0, 0))          columns = table.Columns()
56          self.assertEquals(table.field_info(3), ('int', 'PONET_ID', 0, 0))          self.assertEquals(columns[0].name, 'AREA')
57          self.assertEquals(table.field_info(6), ('string', 'POPYCOUN', 0, 0))          self.assertEquals(columns[0].type, FIELDTYPE_DOUBLE)
58            self.assertEquals(columns[3].name, 'PONET_ID')
59            self.assertEquals(columns[3].type, FIELDTYPE_INT)
60            self.assertEquals(columns[6].name, 'POPYCOUN')
61            self.assertEquals(columns[6].type, FIELDTYPE_STRING)
62    
63            # HasColumn
64            self.failUnless(table.HasColumn("AREA"))
65            self.failUnless(table.HasColumn(1))
66            # HasColumn for non-exisiting columns
67            self.failIf(table.HasColumn("non_existing_name"))
68            self.failIf(table.HasColumn(100))
69    
70          # Read an `interesting' record          # Reading rows and values.
71          self.assertEquals(table.read_record(144),          self.assertEquals(table.ReadRowAsDict(144),
72                            {'POPYCOUN': 'IC', 'POPYADMIN': '', 'PONET_': 146,                            {'POPYCOUN': 'IC', 'POPYADMIN': '', 'PONET_': 146,
73                             'AREA': 19.462,                             'AREA': 19.462,
74                             'POPYTYPE': 1, 'PERIMETER': 88.518000000000001,                             'POPYTYPE': 1, 'PERIMETER': 88.518000000000001,
75                             'POPYREG': '1',                             'POPYREG': '1',
76                             'PONET_ID': 145})                             'PONET_ID': 145})
77            self.assertEquals(table.ReadValue(144, "AREA"), 19.462)
78            self.assertEquals(table.ReadValue(144, 3), 145)
79    
80          # field_range may induce a copy to the transient database.          # ValueRange may induce a copy to the transient database.
81          # Therefore we put it last so that we can execute this method          # Therefore we put it last so that we can execute this method
82          # twice to check whether the other methods still work after the          # twice to check whether the other methods still work after the
83          # copy          # copy
84          self.assertEquals(table.field_range("AREA"),          self.assertEquals(table.ValueRange("AREA"), (0.0, 19.462))
                           ((0.0, None), (19.462, None)))  
85    
86          unique = table.GetUniqueValues("PONET_ID")          unique = table.UniqueValues("PONET_ID")
87          unique.sort()          unique.sort()
88          self.assertEquals(unique, range(1, 157))          self.assertEquals(unique, range(1, 157))
89    
# Line 136  class TestTransientTable(unittest.TestCa Line 120  class TestTransientTable(unittest.TestCa
120          self.run_iceland_political_tests(table)          self.run_iceland_political_tests(table)
121          self.run_iceland_political_tests(table)          self.run_iceland_political_tests(table)
122    
123        def test_auto_transient_table_query(self):
124            """Test AutoTransientTable.SimpleQuery()"""
125            orig_table = DBFTable(os.path.join("..", "Data", "iceland",
126                                               "political.dbf"))
127            table = AutoTransientTable(self.transientdb, orig_table)
128            # Only a simple test here. The AutoTransientTable simply
129            # delegates to its transient table so it should be OK that the
130            # real test for it is in test_transient_table_query. However,
131            # it's important to check that the column handling works
132            # correctly because the AutoTransientTable and it's underlying
133            # transient table use different column object types.
134            self.assertEquals(table.SimpleQuery(table.Column("AREA"), ">", 10.0),
135                              [144])
136    
137            # test using a Column object as the right parameter
138            self.assertEquals(table.SimpleQuery(table.Column("POPYTYPE"),
139                                                "==",
140                                                table.Column("POPYREG")),
141                              range(156))
142    
143      def test_transient_joined_table(self):      def test_transient_joined_table(self):
144          """Test TransientJoinedTable"""          """Test TransientJoinedTable"""
145          simple = SimpleTable([("type", FIELDTYPE_STRING),          simple = MemoryTable([("type", FIELDTYPE_STRING),
146                                ("code", FIELDTYPE_INT)],                                ("code", FIELDTYPE_INT)],
147                               [("OTHER/UNKNOWN", 0),                               [("OTHER/UNKNOWN", 0),
148                                ("RUINS", 1),                                ("RUINS", 1),
# Line 155  class TestTransientTable(unittest.TestCa Line 158  class TestTransientTable(unittest.TestCa
158          table = TransientJoinedTable(self.transientdb, landmarks, "CLPTLABEL",          table = TransientJoinedTable(self.transientdb, landmarks, "CLPTLABEL",
159                                       auto, "type")                                       auto, "type")
160    
161          self.assertEquals(table.record_count(), 34)          self.assertEquals(table.NumRows(), 34)
162          self.assertEquals(table.field_count(), 8)          self.assertEquals(table.NumColumns(), 8)
163          self.assertEquals(table.field_info(0), ('double', 'AREA', 0, 0))          self.assertEquals(table.Column(0).type, FIELDTYPE_DOUBLE)
164          self.assertEquals(table.field_info(7), ('int', 'code', 0, 0))          self.assertEquals(table.Column(0).name, 'AREA')
165          self.assertEquals(table.field_info(4), ('string', 'CLPTLABEL', 0, 0))          self.assertEquals(table.Column(7).type, FIELDTYPE_INT)
166            self.assertEquals(table.Column(7).name, 'code')
167            self.assertEquals(table.Column(4).type, FIELDTYPE_STRING)
168            self.assertEquals(table.Column(4).name, 'CLPTLABEL')
169            # HasColumn
170            self.failUnless(table.HasColumn("AREA"))
171            self.failUnless(table.HasColumn(1))
172            # HasColumn for non-exisiting columns
173            self.failIf(table.HasColumn("non_existing_name"))
174            self.failIf(table.HasColumn(100))
175    
176          # Read an `interesting' record          # Reading rows and values
177          self.assertEquals(table.read_record(22),          self.assertEquals(table.ReadRowAsDict(22),
178                            {'PERIMETER': 0.0, 'CLPOINT_': 23,                            {'PERIMETER': 0.0, 'CLPOINT_': 23,
179                             'AREA': 0.0, 'CLPTLABEL': 'RUINS',                             'AREA': 0.0, 'CLPTLABEL': 'RUINS',
180                             'CLPOINT_ID': 38, 'CLPTFLAG': 0,                             'CLPOINT_ID': 38, 'CLPTFLAG': 0,
181                             'code': 1, 'type': 'RUINS'})                             'code': 1, 'type': 'RUINS'})
182            self.assertEquals(table.ReadValue(22, "type"), 'RUINS')
183            self.assertEquals(table.ReadValue(22, 7), 1)
184    
185          # The transient_table method should return the table itself          # The transient_table method should return the table itself
186          self.assert_(table is table.transient_table())          self.assert_(table is table.transient_table())
187    
188    
189      def test_transient_table_read_twice(self):      def test_transient_table_read_twice(self):
190          """Test TransientTable.read_record() reading the same record twice"""          """Test TransientTable.ReadRowAsDict() reading the same record twice"""
191          simple = SimpleTable([("type", FIELDTYPE_STRING),          simple = MemoryTable([("type", FIELDTYPE_STRING),
192                                ("code", FIELDTYPE_INT)],                                ("code", FIELDTYPE_INT)],
193                               [("OTHER/UNKNOWN", 0),                               [("OTHER/UNKNOWN", 0),
194                                ("RUINS", 1),                                ("RUINS", 1),
# Line 189  class TestTransientTable(unittest.TestCa Line 203  class TestTransientTable(unittest.TestCa
203          # unitialized local variable, so for passing the test it's          # unitialized local variable, so for passing the test it's
204          # enough if reading simply succeeds. OTOH, while we're at it we          # enough if reading simply succeeds. OTOH, while we're at it we
205          # might as well check whether the results are equal anyway :)          # might as well check whether the results are equal anyway :)
206          result1 = table.read_record(3)          result1 = table.ReadRowAsDict(3)
207          result2 = table.read_record(3)          result2 = table.ReadRowAsDict(3)
208          self.assertEquals(result1, result2)          self.assertEquals(result1, result2)
209    
210    
211        def test_transient_table_query(self):
212            """Test TransientTable.SimpleQuery()"""
213            simple = MemoryTable([("type", FIELDTYPE_STRING),
214                                  ("value", FIELDTYPE_DOUBLE),
215                                  ("code", FIELDTYPE_INT)],
216                                 [("OTHER/UNKNOWN", -1.5, 11),
217                                  ("RUINS", 0.0, 1),
218                                  ("FARM", 3.141, 2),
219                                  ("BUILDING", 2.5, 3),
220                                  ("HUT", 1e6, 4),
221                                  ("LIGHTHOUSE", -0.01, 5)])
222            table = TransientTable(self.transientdb, simple)
223    
224            # A column and a value
225            self.assertEquals(table.SimpleQuery(table.Column(0), "==", "RUINS"),
226                              [1])
227            self.assertEquals(table.SimpleQuery(table.Column(2), "!=", 2),
228                              [0, 1, 3, 4, 5])
229            self.assertEquals(table.SimpleQuery(table.Column(1), "<", 1.0),
230                              [0, 1, 5])
231            self.assertEquals(table.SimpleQuery(table.Column(1), "<=", -1.5),
232                              [0])
233            self.assertEquals(table.SimpleQuery(table.Column(2), ">", 3),
234                              [0, 4, 5])
235            self.assertEquals(table.SimpleQuery(table.Column(2), ">=", 3),
236                              [0, 3, 4, 5])
237    
238            # Two columns as operands
239            self.assertEquals(table.SimpleQuery(table.Column(1),
240                                                "<=", table.Column(2)),
241                              [0, 1, 3, 5])
242    
243            # Test whether invalid operators raise a ValueError
244            self.assertRaises(ValueError,
245                              table.SimpleQuery,
246                              table.Column(1), "<<", table.Column(2))
247    
248    
249  if __name__ == "__main__":  if __name__ == "__main__":
250      support.run_tests()      support.run_tests()
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