1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
|
# Copyright (c) 2002, 2003 by Intevation GmbH
# Authors:
# Bernhard Herzog <bh@intevation.de>
#
# This program is free software under the GPL (>=v2)
# Read the file COPYING coming with Thuban for details.
"""
Test the DBFTable class
"""
__version__ = "$Revision: 1662 $"
# $Source$
# $Id: test_dbf_table.py 1662 2003-08-27 13:51:01Z bh $
import os
import unittest
import support
support.initthuban()
from Thuban.Model.table import DBFTable, MemoryTable, \
FIELDTYPE_DOUBLE, FIELDTYPE_INT, FIELDTYPE_STRING, \
table_to_dbf
import dbflib
class TestTableToDBF(unittest.TestCase, support.FileTestMixin):
def test_table_to_dbf(self):
"""Test table_to_dbf"""
memtable = MemoryTable([("type", FIELDTYPE_STRING),
("value", FIELDTYPE_DOUBLE),
("code", FIELDTYPE_INT)],
[("UNKNOWN", 0.0, 0),
("Foo", 0.5, -1),
("Foo", 1.0/256, 100),
("bar", 1e10, 17)])
filename = self.temp_file_name("test_table_to_dbf.dbf")
table_to_dbf(memtable, filename)
dbf = dbflib.DBFFile(filename)
self.assertEquals(dbf.read_record(2),
{'code': 100, 'type': 'Foo', 'value': 0.00390625})
self.assertEquals(dbf.field_count(), 3)
self.assertEquals(dbf.record_count(), 4)
self.assertEquals(dbf.field_info(0),
(dbflib.FTString, "type", 7, 0))
self.assertEquals(dbf.field_info(1),
(dbflib.FTDouble, "value", 24, 12))
self.assertEquals(dbf.field_info(2),
(dbflib.FTInteger, "code", 3, 0))
# save selected rows
table_to_dbf(memtable, filename, [1, 3])
dbf = dbflib.DBFFile(filename)
self.assertEquals(dbf.read_record(0),
{'code': -1, 'type': 'Foo', 'value': 0.5})
self.assertEquals(dbf.field_count(), 3)
self.assertEquals(dbf.record_count(), 2)
self.assertEquals(dbf.field_info(0),
(dbflib.FTString, "type", 7, 0))
self.assertEquals(dbf.field_info(1),
(dbflib.FTDouble, "value", 24, 12))
self.assertEquals(dbf.field_info(2),
(dbflib.FTInteger, "code", 3, 0))
def test_table_to_dbf_long_col_names(self):
"""Test table_to_dbf with long column names."""
memtable = MemoryTable([("SOME_STRING", FIELDTYPE_STRING),
("SOME_LONG_COLNAME", FIELDTYPE_DOUBLE),
("SOME_LONG_COLNAME_2", FIELDTYPE_DOUBLE)],
[("UNKNOWN", 0.0, 0.0),
("Foo", 1.0, 0.0),
("Foo", 478.23482182999999, 0.0),
("bar", -2.25, 1.0)])
filename = self.temp_file_name("test_table_to_dbf_long_col_names.dbf")
table_to_dbf(memtable, filename)
dbf = dbflib.DBFFile(filename)
self.assertEquals(dbf.read_record(3),
{'SOME_STRIN': "bar", 'SOME_LONG_': -2.25,
'SOME_LONG1': 1.0})
class TestDBFTable(unittest.TestCase, support.FileTestMixin):
def setUp(self):
"""Create a new dbf file. The name is in self.filename"""
simple = MemoryTable([("type", FIELDTYPE_STRING),
("value", FIELDTYPE_DOUBLE),
("code", FIELDTYPE_INT)],
[("UNKNOWN", 0.0, 0),
("Foo", 0.5, -1),
("Foo", 0.25, 100),
("bar", 1e10, 17)])
self.filename = self.temp_file_name("test_dbf_read.dbf")
table_to_dbf(simple, self.filename)
def test_num_rows(self):
"""Test DBFTable.NumRows()"""
table = DBFTable(self.filename)
self.assertEquals(table.NumRows(), 4)
def test_num_columns(self):
"""Test DBFTable.NumColumns()"""
table = DBFTable(self.filename)
self.assertEquals(table.NumColumns(), 3)
def test_columns(self):
"""Test DBFTable.Columns()"""
table = DBFTable(self.filename)
columns = table.Columns()
self.assertEquals(columns[0].name, "type")
self.assertEquals(columns[0].type, FIELDTYPE_STRING)
self.assertEquals(columns[1].name, "value")
self.assertEquals(columns[1].type, FIELDTYPE_DOUBLE)
self.assertEquals(columns[2].name, "code")
self.assertEquals(columns[2].type, FIELDTYPE_INT)
def test_column(self):
"""Test DBFTable.Column()"""
table = DBFTable(self.filename)
# The Column method can be called with either an index or a name
col = table.Column(2)
self.assertEquals(col.name, "code")
self.assertEquals(col.type, FIELDTYPE_INT)
col = table.Column("value")
self.assertEquals(col.name, "value")
self.assertEquals(col.type, FIELDTYPE_DOUBLE)
def test_has_column(self):
"""Test DBFTable.HasColumn()"""
table = DBFTable(self.filename)
# HasColumn
self.failUnless(table.HasColumn("value"))
self.failUnless(table.HasColumn(2))
# HasColumn for non-exisiting columns
self.failIf(table.HasColumn("non_existing_name"))
self.failIf(table.HasColumn(100))
def test_read_row_as_dict(self):
"""Test DBFTable.ReadRowAsDict()"""
table = DBFTable(self.filename)
self.assertEquals(table.ReadRowAsDict(1),
{"type": "Foo", "value": 0.5, "code": -1})
def test_read_row_as_dict_row_count_mode(self):
"""Test DBFTable.ReadRowAsDict() row count address mode"""
table = DBFTable(self.filename)
self.assertEquals(table.ReadRowAsDict(1, row_is_ordinal = 1),
{"type": "Foo", "value": 0.5, "code": -1})
def test_read_value(self):
"""Test DBFTable.ReadValue()"""
table = DBFTable(self.filename)
# The column in ReadValue may be given as either name or index
self.assertEquals(table.ReadValue(2, 0), "Foo")
self.assertEquals(table.ReadValue(3, "code"), 17)
def test_read_value_row_count_mode(self):
"""Test DBFTable.ReadValue() row count address mode"""
table = DBFTable(self.filename)
# The column in ReadValue may be given as either name or index
self.assertEquals(table.ReadValue(2, 0, row_is_ordinal = 1), "Foo")
self.assertEquals(table.ReadValue(3, "code", row_is_ordinal = 1), 17)
def test_row_id_to_ordinal(self):
"""Test DBFTable.RowIdToOrdinal()"""
table = DBFTable(self.filename)
self.assertEquals(table.RowIdToOrdinal(5), 5)
def test_row_oridnal_to_id(self):
"""Test DBFTable.RowOrdinalToId()"""
table = DBFTable(self.filename)
self.assertEquals(table.RowOrdinalToId(5), 5)
def test_value_range(self):
"""Test DBFTable.ValueRange()"""
table = DBFTable(self.filename)
self.assertEquals(table.ValueRange("code"), (-1, 100))
self.assertEquals(table.ValueRange(1), (0, 1e10))
def test_unique_values(self):
"""Test DBFTable.UniqueValues()"""
table = DBFTable(self.filename)
# The column can be specified by name or index
self.assertEquals(table.UniqueValues("type"),
["Foo", "UNKNOWN", "bar"])
self.assertEquals(table.UniqueValues(2), [-1, 0, 17, 100])
def test_dependencies(self):
"""Test DBFTable.Dependencies()"""
# A DBFTable doesn't have dependencies
table = DBFTable(self.filename)
self.assertEquals(len(table.Dependencies()), 0)
def test_filename(self):
"""Test DBFTable.FileName()"""
# A DBFTable doesn't have dependencies
table = DBFTable(self.filename)
self.assertEquals(table.FileName(), self.filename)
def test_title(self):
"""Test DBFTable.Title()"""
# A DBFTable doesn't have dependencies
table = DBFTable(self.filename)
self.assertEquals(table.Title(), "test_dbf_read")
class TestDBFTableWriting(unittest.TestCase, support.FileTestMixin):
def test_write(self):
"""Test DBFTable.write_record()"""
eq = self.assertEquals
# First create a DBF file
dbffilename = self.temp_file_name("dbftable_write.dbf")
dbf = dbflib.create(dbffilename)
dbf.add_field("NAME", dbflib.FTString, 20, 0)
dbf.add_field("INT", dbflib.FTInteger, 10, 0)
dbf.add_field("FLOAT", dbflib.FTDouble, 10, 4)
dbf.write_record(0, {'NAME': "Weatherwax", "INT":1,
"FLOAT":3.1415926535})
dbf.close()
# Create the table
table = DBFTable(dbffilename)
record = table.ReadRowAsDict(0)
# The FLOAT value is different from above because of rounding
eq(record, {'NAME': "Weatherwax", "INT":1, "FLOAT":3.1415999999999999})
# change only one field
table.write_record(0, {"NAME": "Ogg"})
# check whether it has been written immediately
dbf = dbflib.DBFFile(dbffilename)
control = dbf.read_record(0)
eq(control, {'NAME': "Ogg", "INT":1, "FLOAT":3.1415999999999999})
dbf.close()
# check whether the table itself returns the new value
eq(table.ReadRowAsDict(0),
{'NAME': "Ogg", "INT":1, "FLOAT":3.1415999999999999})
# Check whether we can specify the record as a tuple
table.write_record(0, ("Garlick", 2, 1.5))
eq(table.ReadRowAsDict(0), {"NAME": "Garlick", "INT": 2, "FLOAT": 1.5})
table.Destroy()
if __name__ == "__main__":
support.run_tests()
|
