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import testbase
import unittest
from sqlalchemy import util, sql, exceptions
from testlib import *
class OrderedDictTest(PersistTest):
def test_odict(self):
o = util.OrderedDict()
o['a'] = 1
o['b'] = 2
o['snack'] = 'attack'
o['c'] = 3
self.assert_(o.keys() == ['a', 'b', 'snack', 'c'])
self.assert_(o.values() == [1, 2, 'attack', 3])
o.pop('snack')
self.assert_(o.keys() == ['a', 'b', 'c'])
self.assert_(o.values() == [1, 2, 3])
o2 = util.OrderedDict(d=4)
o2['e'] = 5
self.assert_(o2.keys() == ['d', 'e'])
self.assert_(o2.values() == [4, 5])
o.update(o2)
self.assert_(o.keys() == ['a', 'b', 'c', 'd', 'e'])
self.assert_(o.values() == [1, 2, 3, 4, 5])
o.setdefault('c', 'zzz')
o.setdefault('f', 6)
self.assert_(o.keys() == ['a', 'b', 'c', 'd', 'e', 'f'])
self.assert_(o.values() == [1, 2, 3, 4, 5, 6])
class OrderedSetTest(PersistTest):
def test_mutators_against_iter(self):
# testing a set modified against an iterator
o = util.OrderedSet([3,2, 4, 5])
self.assertEquals(o.difference(iter([3,4])), util.OrderedSet([2,5]))
self.assertEquals(o.intersection(iter([3,4, 6])), util.OrderedSet([3, 4]))
self.assertEquals(o.union(iter([3,4, 6])), util.OrderedSet([2, 3, 4, 5, 6]))
class ColumnCollectionTest(PersistTest):
def test_in(self):
cc = sql.ColumnCollection()
cc.add(sql.column('col1'))
cc.add(sql.column('col2'))
cc.add(sql.column('col3'))
assert 'col1' in cc
assert 'col2' in cc
try:
cc['col1'] in cc
assert False
except exceptions.ArgumentError, e:
assert str(e) == "__contains__ requires a string argument"
def test_compare(self):
cc1 = sql.ColumnCollection()
cc2 = sql.ColumnCollection()
cc3 = sql.ColumnCollection()
c1 = sql.column('col1')
c2 = c1.label('col2')
c3 = sql.column('col3')
cc1.add(c1)
cc2.add(c2)
cc3.add(c3)
assert (cc1==cc2).compare(c1 == c2)
assert not (cc1==cc3).compare(c2 == c3)
class ArgSingletonTest(unittest.TestCase):
def test_cleanout(self):
util.ArgSingleton.instances.clear()
class MyClass(object):
__metaclass__ = util.ArgSingleton
def __init__(self, x, y):
self.x = x
self.y = y
m1 = MyClass(3, 4)
m2 = MyClass(1, 5)
m3 = MyClass(3, 4)
assert m1 is m3
assert m2 is not m3
assert len(util.ArgSingleton.instances) == 2
m1 = m2 = m3 = None
MyClass.dispose(MyClass)
assert len(util.ArgSingleton.instances) == 0
class ImmutableSubclass(str):
pass
class HashOverride(object):
def __init__(self, value=None):
self.value = value
def __hash__(self):
return hash(self.value)
class EqOverride(object):
def __init__(self, value=None):
self.value = value
def __eq__(self, other):
if isinstance(other, EqOverride):
return self.value == other.value
else:
return False
def __ne__(self, other):
if isinstance(other, EqOverride):
return self.value != other.value
else:
return True
class HashEqOverride(object):
def __init__(self, value=None):
self.value = value
def __hash__(self):
return hash(self.value)
def __eq__(self, other):
if isinstance(other, EqOverride):
return self.value == other.value
else:
return False
def __ne__(self, other):
if isinstance(other, EqOverride):
return self.value != other.value
else:
return True
class IdentitySetTest(unittest.TestCase):
def assert_eq(self, identityset, expected_iterable):
found = sorted(list(identityset))
expected = sorted(expected_iterable)
self.assertEquals(found, expected)
def test_init(self):
ids = util.IdentitySet([1,2,3,2,1])
self.assert_eq(ids, [1,2,3])
ids = util.IdentitySet(ids)
self.assert_eq(ids, [1,2,3])
ids = util.IdentitySet()
self.assert_eq(ids, [])
ids = util.IdentitySet([])
self.assert_eq(ids, [])
ids = util.IdentitySet(ids)
self.assert_eq(ids, [])
def test_add(self):
for type_ in (object, ImmutableSubclass):
data = [type_(), type_()]
ids = util.IdentitySet()
for i in range(2) + range(2):
ids.add(data[i])
self.assert_eq(ids, data)
for type_ in (EqOverride, HashOverride, HashEqOverride):
data = [type_(1), type_(1), type_(2)]
ids = util.IdentitySet()
for i in range(3) + range(3):
ids.add(data[i])
self.assert_eq(ids, data)
def test_basic_sanity(self):
IdentitySet = util.IdentitySet
o1, o2, o3 = object(), object(), object()
ids = IdentitySet([o1])
ids.discard(o1)
ids.discard(o1)
ids.add(o1)
ids.remove(o1)
self.assertRaises(KeyError, ids.remove, o1)
self.assert_(ids.copy() == ids)
self.assert_(ids != None)
self.assert_(not(ids == None))
self.assert_(ids != IdentitySet([o1,o2,o3]))
ids.clear()
self.assert_(o1 not in ids)
ids.add(o2)
self.assert_(o2 in ids)
self.assert_(ids.pop() == o2)
ids.add(o1)
self.assert_(len(ids) == 1)
isuper = IdentitySet([o1,o2])
self.assert_(ids < isuper)
self.assert_(ids.issubset(isuper))
self.assert_(isuper.issuperset(ids))
self.assert_(isuper > ids)
self.assert_(ids.union(isuper) == isuper)
self.assert_(ids | isuper == isuper)
self.assert_(isuper - ids == IdentitySet([o2]))
self.assert_(isuper.difference(ids) == IdentitySet([o2]))
self.assert_(ids.intersection(isuper) == IdentitySet([o1]))
self.assert_(ids & isuper == IdentitySet([o1]))
self.assert_(ids.symmetric_difference(isuper) == IdentitySet([o2]))
self.assert_(ids ^ isuper == IdentitySet([o2]))
ids.update(isuper)
ids |= isuper
ids.difference_update(isuper)
ids -= isuper
ids.intersection_update(isuper)
ids &= isuper
ids.symmetric_difference_update(isuper)
ids ^= isuper
ids.update('foobar')
try:
ids |= 'foobar'
self.assert_(False)
except TypeError:
self.assert_(True)
s = set([o1,o2])
s |= ids
self.assert_(isinstance(s, IdentitySet))
self.assertRaises(TypeError, cmp, ids)
self.assertRaises(TypeError, hash, ids)
class DictlikeIteritemsTest(unittest.TestCase):
baseline = set([('a', 1), ('b', 2), ('c', 3)])
def _ok(self, instance):
iterator = util.dictlike_iteritems(instance)
self.assertEquals(set(iterator), self.baseline)
def _notok(self, instance):
self.assertRaises(TypeError,
util.dictlike_iteritems,
instance)
def test_dict(self):
d = dict(a=1,b=2,c=3)
self._ok(d)
def test_subdict(self):
class subdict(dict):
pass
d = subdict(a=1,b=2,c=3)
self._ok(d)
def test_UserDict(self):
import UserDict
d = UserDict.UserDict(a=1,b=2,c=3)
self._ok(d)
def test_object(self):
self._notok(object())
def test_duck_1(self):
class duck1(object):
def iteritems(duck):
return iter(self.baseline)
self._ok(duck1())
def test_duck_2(self):
class duck2(object):
def items(duck):
return list(self.baseline)
self._ok(duck2())
def test_duck_3(self):
class duck3(object):
def iterkeys(duck):
return iter(['a', 'b', 'c'])
def __getitem__(duck, key):
return dict(a=1,b=2,c=3).get(key)
self._ok(duck3())
def test_duck_4(self):
class duck4(object):
def iterkeys(duck):
return iter(['a', 'b', 'c'])
self._notok(duck4())
def test_duck_5(self):
class duck5(object):
def keys(duck):
return ['a', 'b', 'c']
def get(duck, key):
return dict(a=1,b=2,c=3).get(key)
self._ok(duck5())
def test_duck_6(self):
class duck6(object):
def keys(duck):
return ['a', 'b', 'c']
self._notok(duck6())
if __name__ == "__main__":
testbase.main()
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