lib-python.2.7.test.test_shelve.py Maven / Gradle / Ivy
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Jython is an implementation of the high-level, dynamic, object-oriented
language Python written in 100% Pure Java, and seamlessly integrated with
the Java platform. It thus allows you to run Python on any Java platform.
import os
import unittest
import shelve
import glob
from test import test_support
test_support.import_module('anydbm', deprecated=True)
class TestCase(unittest.TestCase):
fn = "shelftemp" + os.extsep + "db"
def test_close(self):
d1 = {}
s = shelve.Shelf(d1, protocol=2, writeback=False)
s['key1'] = [1,2,3,4]
self.assertEqual(s['key1'], [1,2,3,4])
self.assertEqual(len(s), 1)
s.close()
self.assertRaises(ValueError, len, s)
try:
s['key1']
except ValueError:
pass
else:
self.fail('Closed shelf should not find a key')
def test_ascii_file_shelf(self):
try:
s = shelve.open(self.fn, protocol=0)
s['key1'] = (1,2,3,4)
self.assertEqual(s['key1'], (1,2,3,4))
s.close()
finally:
for f in glob.glob(self.fn+"*"):
os.unlink(f)
def test_binary_file_shelf(self):
try:
s = shelve.open(self.fn, protocol=1)
s['key1'] = (1,2,3,4)
self.assertEqual(s['key1'], (1,2,3,4))
s.close()
finally:
for f in glob.glob(self.fn+"*"):
os.unlink(f)
def test_proto2_file_shelf(self):
try:
s = shelve.open(self.fn, protocol=2)
s['key1'] = (1,2,3,4)
self.assertEqual(s['key1'], (1,2,3,4))
s.close()
finally:
for f in glob.glob(self.fn+"*"):
os.unlink(f)
def test_in_memory_shelf(self):
d1 = {}
s = shelve.Shelf(d1, protocol=0)
s['key1'] = (1,2,3,4)
self.assertEqual(s['key1'], (1,2,3,4))
s.close()
d2 = {}
s = shelve.Shelf(d2, protocol=1)
s['key1'] = (1,2,3,4)
self.assertEqual(s['key1'], (1,2,3,4))
s.close()
self.assertEqual(len(d1), 1)
self.assertNotEqual(d1, d2)
def test_mutable_entry(self):
d1 = {}
s = shelve.Shelf(d1, protocol=2, writeback=False)
s['key1'] = [1,2,3,4]
self.assertEqual(s['key1'], [1,2,3,4])
s['key1'].append(5)
self.assertEqual(s['key1'], [1,2,3,4])
s.close()
d2 = {}
s = shelve.Shelf(d2, protocol=2, writeback=True)
s['key1'] = [1,2,3,4]
self.assertEqual(s['key1'], [1,2,3,4])
s['key1'].append(5)
self.assertEqual(s['key1'], [1,2,3,4,5])
s.close()
self.assertEqual(len(d1), 1)
self.assertEqual(len(d2), 1)
def test_writeback_also_writes_immediately(self):
# Issue 5754
d = {}
s = shelve.Shelf(d, writeback=True)
s['key'] = [1]
p1 = d['key'] # Will give a KeyError if backing store not updated
s['key'].append(2)
s.close()
p2 = d['key']
self.assertNotEqual(p1, p2) # Write creates new object in store
from test import mapping_tests
class TestShelveBase(mapping_tests.BasicTestMappingProtocol):
fn = "shelftemp.db"
counter = 0
def __init__(self, *args, **kw):
self._db = []
mapping_tests.BasicTestMappingProtocol.__init__(self, *args, **kw)
type2test = shelve.Shelf
def _reference(self):
return {"key1":"value1", "key2":2, "key3":(1,2,3)}
def _empty_mapping(self):
if self._in_mem:
x= shelve.Shelf({}, **self._args)
else:
self.counter+=1
x= shelve.open(self.fn+str(self.counter), **self._args)
self._db.append(x)
return x
def tearDown(self):
for db in self._db:
db.close()
self._db = []
if not self._in_mem:
for f in glob.glob(self.fn+"*"):
test_support.unlink(f)
class TestAsciiFileShelve(TestShelveBase):
_args={'protocol':0}
_in_mem = False
class TestBinaryFileShelve(TestShelveBase):
_args={'protocol':1}
_in_mem = False
class TestProto2FileShelve(TestShelveBase):
_args={'protocol':2}
_in_mem = False
class TestAsciiMemShelve(TestShelveBase):
_args={'protocol':0}
_in_mem = True
class TestBinaryMemShelve(TestShelveBase):
_args={'protocol':1}
_in_mem = True
class TestProto2MemShelve(TestShelveBase):
_args={'protocol':2}
_in_mem = True
def test_main():
test_support.run_unittest(
TestAsciiFileShelve,
TestBinaryFileShelve,
TestProto2FileShelve,
TestAsciiMemShelve,
TestBinaryMemShelve,
TestProto2MemShelve,
TestCase
)
if __name__ == "__main__":
test_main()