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"""provides unit tests for compat module"""
from logilab.common.testlib import TestCase, unittest_main
import sys
import types
import __builtin__
import pprint
class CompatTCMixIn:
MODNAMES = {}
BUILTINS = []
def setUp(self):
self.builtins_backup = {}
self.modules_backup = {}
self.remove_builtins()
self.remove_modules()
def tearDown(self):
for modname in self.MODNAMES:
del sys.modules[modname]
for funcname, func in self.builtins_backup.items():
setattr(__builtin__, funcname, func)
# delattr(__builtin__, 'builtin_%s' % funcname)
for modname, mod in self.modules_backup.items():
sys.modules[modname] = mod
try:
del sys.modules['logilab.common.compat']
except KeyError:
pass
def remove_builtins(self):
for builtin in self.BUILTINS:
func = getattr(__builtin__, builtin, None)
if func is not None:
self.builtins_backup[builtin] = func
delattr(__builtin__, builtin)
# setattr(__builtin__, 'builtin_%s' % builtin, func)
def remove_modules(self):
for modname in self.MODNAMES:
if modname in sys.modules:
self.modules_backup[modname] = sys.modules[modname]
sys.modules[modname] = types.ModuleType('faked%s' % modname)
def test_removed_builtins(self):
"""tests that builtins are actually uncallable"""
for builtin in self.BUILTINS:
self.assertRaises(NameError, eval, builtin, {})
def test_removed_modules(self):
"""tests that builtins are actually emtpy"""
for modname, funcnames in self.MODNAMES.items():
import_stmt = 'from %s import %s' % (modname, ', '.join(funcnames))
# FIXME: use __import__ instead
code = compile(import_stmt, 'foo.py', 'exec')
self.assertRaises(ImportError, eval, code)
class Py23CompatTC(CompatTCMixIn, TestCase):
BUILTINS = ('enumerate', 'sum')
MODNAMES = {
'sets' : ('Set', 'ImmutableSet'),
'itertools' : ('izip', 'chain'),
}
def test_sum(self):
from logilab.common.compat import sum
self.assertEquals(sum(range(5)), 10)
self.assertRaises(TypeError, sum, 'abc')
def test_enumerate(self):
from logilab.common.compat import enumerate
self.assertEquals(list(enumerate([])), [])
self.assertEquals(list(enumerate('abc')),
[(0, 'a'), (1, 'b'), (2, 'c')])
def test_basic_set(self):
from logilab.common.compat import set
s = set('abc')
self.assertEquals(len(s), 3)
s.remove('a')
self.assertEquals(len(s), 2)
s.add('a')
self.assertEquals(len(s), 3)
s.add('a')
self.assertEquals(len(s), 3)
self.assertRaises(KeyError, s.remove, 'd')
def test_basic_set(self):
from logilab.common.compat import set
s = set('abc')
self.assertEquals(len(s), 3)
s.remove('a')
self.assertEquals(len(s), 2)
s.add('a')
self.assertEquals(len(s), 3)
s.add('a')
self.assertEquals(len(s), 3)
self.assertRaises(KeyError, s.remove, 'd')
self.assertRaises(TypeError, dict, [(s, 'foo')])
def test_frozenset(self):
from logilab.common.compat import frozenset
s = frozenset('abc')
self.assertEquals(len(s), 3)
self.assertRaises(AttributeError, getattr, s, 'remove')
self.assertRaises(AttributeError, getattr, s, 'add')
d = {s : 'foo'} # frozenset should be hashable
d[s] = 'bar'
self.assertEquals(len(d), 1)
self.assertEquals(d[s], 'bar')
class Py24CompatTC(CompatTCMixIn, TestCase):
BUILTINS = ('reversed', 'sorted', 'set', 'frozenset',)
def test_sorted(self):
from logilab.common.compat import sorted
l = [3, 1, 2, 5, 4]
s = sorted(l)
self.assertEquals(s, [1, 2, 3, 4, 5])
self.assertEquals(l, [3, 1, 2, 5, 4])
self.assertEquals(sorted('FeCBaD'), list('BCDFae'))
self.assertEquals(sorted('FeCBaD', key=str.lower), list('aBCDeF'))
self.assertEquals(sorted('FeCBaD', key=str.lower, reverse=True), list('FeDCBa'))
def strcmp(s1, s2):
return cmp(s1.lower(), s2.lower())
self.assertEquals(sorted('FeCBaD', cmp=strcmp), list('aBCDeF'))
def test_reversed(self):
from logilab.common.compat import reversed
l = range(5)
r = reversed(l)
self.assertEquals(r, [4, 3, 2, 1, 0])
self.assertEquals(l, range(5))
def test_set(self):
from logilab.common.compat import set
s1 = set(range(5))
s2 = set(range(2, 6))
self.assertEquals(len(s1), 5)
self.assertEquals(s1 & s2, set([2, 3, 4]))
self.assertEquals(s1 | s2, set(range(6)))
class Py25CompatTC(CompatTCMixIn, TestCase):
BUILTINS = ('any', 'all',)
def test_any(self):
from logilab.common.compat import any
testdata = ([], (), '', 'abc', xrange(0, 10), xrange(0, -10, -1))
self.assertEquals(any([]), False)
self.assertEquals(any(()), False)
self.assertEquals(any(''), False)
self.assertEquals(any('abc'), True)
self.assertEquals(any(xrange(10)), True)
self.assertEquals(any(xrange(0, -10, -1)), True)
# python2.5's any consumes iterables
irange = iter(range(10))
self.assertEquals(any(irange), True)
self.assertEquals(irange.next(), 2)
def test_all(self):
from logilab.common.compat import all
testdata = ([], (), '', 'abc', xrange(0, 10), xrange(0, -10, -1))
self.assertEquals(all([]), True)
self.assertEquals(all(()), True)
self.assertEquals(all(''), True)
self.assertEquals(all('abc'), True)
self.assertEquals(all(xrange(10)), False)
self.assertEquals(all(xrange(0, -10, -1)), False)
# python2.5's all consumes iterables
irange = iter(range(10))
self.assertEquals(all(irange), False)
self.assertEquals(irange.next(), 1)
if __name__ == '__main__':
unittest_main()
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