Lib.test.seq_tests.py Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jython-standalone Show documentation
Show all versions of jython-standalone Show documentation
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.
The newest version!
"""
Tests common to tuple, list and UserList.UserList
"""
import unittest
import sys
from test import test_support
if test_support.is_jython:
from java.util import List as JList
# Various iterables
# This is used for checking the constructor (here and in test_deque.py)
def iterfunc(seqn):
'Regular generator'
for i in seqn:
yield i
class Sequence:
'Sequence using __getitem__'
def __init__(self, seqn):
self.seqn = seqn
def __getitem__(self, i):
return self.seqn[i]
class IterFunc:
'Sequence using iterator protocol'
def __init__(self, seqn):
self.seqn = seqn
self.i = 0
def __iter__(self):
return self
def next(self):
if self.i >= len(self.seqn): raise StopIteration
v = self.seqn[self.i]
self.i += 1
return v
class IterGen:
'Sequence using iterator protocol defined with a generator'
def __init__(self, seqn):
self.seqn = seqn
self.i = 0
def __iter__(self):
for val in self.seqn:
yield val
class IterNextOnly:
'Missing __getitem__ and __iter__'
def __init__(self, seqn):
self.seqn = seqn
self.i = 0
def next(self):
if self.i >= len(self.seqn): raise StopIteration
v = self.seqn[self.i]
self.i += 1
return v
class IterNoNext:
'Iterator missing next()'
def __init__(self, seqn):
self.seqn = seqn
self.i = 0
def __iter__(self):
return self
class IterGenExc:
'Test propagation of exceptions'
def __init__(self, seqn):
self.seqn = seqn
self.i = 0
def __iter__(self):
return self
def next(self):
3 // 0
class IterFuncStop:
'Test immediate stop'
def __init__(self, seqn):
pass
def __iter__(self):
return self
def next(self):
raise StopIteration
from itertools import chain, imap
def itermulti(seqn):
'Test multiple tiers of iterators'
return chain(imap(lambda x:x, iterfunc(IterGen(Sequence(seqn)))))
class CommonTest(unittest.TestCase):
# The type to be tested
type2test = None
def test_constructors(self):
l0 = []
l1 = [0]
l2 = [0, 1]
u = self.type2test()
u0 = self.type2test(l0)
u1 = self.type2test(l1)
u2 = self.type2test(l2)
uu = self.type2test(u)
uu0 = self.type2test(u0)
uu1 = self.type2test(u1)
uu2 = self.type2test(u2)
v = self.type2test(tuple(u))
class OtherSeq:
def __init__(self, initseq):
self.__data = initseq
def __len__(self):
return len(self.__data)
def __getitem__(self, i):
return self.__data[i]
if not (test_support.is_jython and issubclass(self.type2test, JList)):
# Jython does not currently support in reflected args
# converting List-like objects to Lists. This lack of
# support should be fixed, but it's tricky.
s = OtherSeq(u0)
v0 = self.type2test(s)
self.assertEqual(len(v0), len(s))
s = "this is also a sequence"
vv = self.type2test(s)
self.assertEqual(len(vv), len(s))
if test_support.is_jython and issubclass(self.type2test, JList):
# Ditto from above, we need to skip the rest of the test
return
# Create from various iteratables
for s in ("123", "", range(1000), ('do', 1.2), xrange(2000,2200,5)):
for g in (Sequence, IterFunc, IterGen,
itermulti, iterfunc):
self.assertEqual(self.type2test(g(s)), self.type2test(s))
self.assertEqual(self.type2test(IterFuncStop(s)), self.type2test())
self.assertEqual(self.type2test(c for c in "123"), self.type2test("123"))
self.assertRaises(TypeError, self.type2test, IterNextOnly(s))
self.assertRaises(TypeError, self.type2test, IterNoNext(s))
self.assertRaises(ZeroDivisionError, self.type2test, IterGenExc(s))
def test_truth(self):
self.assertFalse(self.type2test())
self.assertTrue(self.type2test([42]))
def test_getitem(self):
u = self.type2test([0, 1, 2, 3, 4])
for i in xrange(len(u)):
self.assertEqual(u[i], i)
self.assertEqual(u[long(i)], i)
for i in xrange(-len(u), -1):
self.assertEqual(u[i], len(u)+i)
self.assertEqual(u[long(i)], len(u)+i)
self.assertRaises(IndexError, u.__getitem__, -len(u)-1)
self.assertRaises(IndexError, u.__getitem__, len(u))
self.assertRaises(ValueError, u.__getitem__, slice(0,10,0))
u = self.type2test()
self.assertRaises(IndexError, u.__getitem__, 0)
self.assertRaises(IndexError, u.__getitem__, -1)
self.assertRaises(TypeError, u.__getitem__)
a = self.type2test([10, 11])
self.assertEqual(a[0], 10)
self.assertEqual(a[1], 11)
self.assertEqual(a[-2], 10)
self.assertEqual(a[-1], 11)
self.assertRaises(IndexError, a.__getitem__, -3)
self.assertRaises(IndexError, a.__getitem__, 3)
def test_getslice(self):
l = [0, 1, 2, 3, 4]
u = self.type2test(l)
self.assertEqual(u[0:0], self.type2test())
self.assertEqual(u[1:2], self.type2test([1]))
self.assertEqual(u[-2:-1], self.type2test([3]))
self.assertEqual(u[-1000:1000], u)
self.assertEqual(u[1000:-1000], self.type2test([]))
self.assertEqual(u[:], u)
self.assertEqual(u[1:None], self.type2test([1, 2, 3, 4]))
self.assertEqual(u[None:3], self.type2test([0, 1, 2]))
# Extended slices
self.assertEqual(u[::], u)
self.assertEqual(u[::2], self.type2test([0, 2, 4]))
self.assertEqual(u[1::2], self.type2test([1, 3]))
self.assertEqual(u[::-1], self.type2test([4, 3, 2, 1, 0]))
self.assertEqual(u[::-2], self.type2test([4, 2, 0]))
self.assertEqual(u[3::-2], self.type2test([3, 1]))
self.assertEqual(u[3:3:-2], self.type2test([]))
self.assertEqual(u[3:2:-2], self.type2test([3]))
self.assertEqual(u[3:1:-2], self.type2test([3]))
self.assertEqual(u[3:0:-2], self.type2test([3, 1]))
self.assertEqual(u[::-100], self.type2test([4]))
self.assertEqual(u[100:-100:], self.type2test([]))
self.assertEqual(u[-100:100:], u)
self.assertEqual(u[100:-100:-1], u[::-1])
self.assertEqual(u[-100:100:-1], self.type2test([]))
self.assertEqual(u[-100L:100L:2L], self.type2test([0, 2, 4]))
# Test extreme cases with long ints
a = self.type2test([0,1,2,3,4])
self.assertEqual(a[ -pow(2,128L): 3 ], self.type2test([0,1,2]))
self.assertEqual(a[ 3: pow(2,145L) ], self.type2test([3,4]))
if not (test_support.is_jython and issubclass(self.type2test, JList)):
# no support for __getslice__ on Jython for
# java.util.List, given that method deprecated since 2.0!
self.assertRaises(TypeError, u.__getslice__)
def test_contains(self):
u = self.type2test([0, 1, 2])
for i in u:
self.assertIn(i, u)
for i in min(u)-1, max(u)+1:
self.assertNotIn(i, u)
self.assertRaises(TypeError, u.__contains__)
def test_contains_fake(self):
class AllEq:
# Sequences must use rich comparison against each item
# (unless "is" is true, or an earlier item answered)
# So instances of AllEq must be found in all non-empty sequences.
def __eq__(self, other):
return True
__hash__ = None # Can't meet hash invariant requirements
self.assertNotIn(AllEq(), self.type2test([]))
self.assertIn(AllEq(), self.type2test([1]))
def test_contains_order(self):
# Sequences must test in-order. If a rich comparison has side
# effects, these will be visible to tests against later members.
# In this test, the "side effect" is a short-circuiting raise.
class DoNotTestEq(Exception):
pass
class StopCompares:
def __eq__(self, other):
raise DoNotTestEq
checkfirst = self.type2test([1, StopCompares()])
self.assertIn(1, checkfirst)
checklast = self.type2test([StopCompares(), 1])
self.assertRaises(DoNotTestEq, checklast.__contains__, 1)
def test_len(self):
self.assertEqual(len(self.type2test()), 0)
self.assertEqual(len(self.type2test([])), 0)
self.assertEqual(len(self.type2test([0])), 1)
self.assertEqual(len(self.type2test([0, 1, 2])), 3)
def test_minmax(self):
u = self.type2test([0, 1, 2])
self.assertEqual(min(u), 0)
self.assertEqual(max(u), 2)
def test_addmul(self):
u1 = self.type2test([0])
u2 = self.type2test([0, 1])
self.assertEqual(u1, u1 + self.type2test())
self.assertEqual(u1, self.type2test() + u1)
self.assertEqual(u1 + self.type2test([1]), u2)
self.assertEqual(self.type2test([-1]) + u1, self.type2test([-1, 0]))
self.assertEqual(self.type2test(), u2*0)
self.assertEqual(self.type2test(), 0*u2)
self.assertEqual(self.type2test(), u2*0L)
self.assertEqual(self.type2test(), 0L*u2)
self.assertEqual(u2, u2*1)
self.assertEqual(u2, 1*u2)
self.assertEqual(u2, u2*1L)
self.assertEqual(u2, 1L*u2)
self.assertEqual(u2+u2, u2*2)
self.assertEqual(u2+u2, 2*u2)
self.assertEqual(u2+u2, u2*2L)
self.assertEqual(u2+u2, 2L*u2)
self.assertEqual(u2+u2+u2, u2*3)
self.assertEqual(u2+u2+u2, 3*u2)
class subclass(self.type2test):
pass
u3 = subclass([0, 1])
self.assertEqual(u3, u3*1)
self.assertIsNot(u3, u3*1)
def test_iadd(self):
u = self.type2test([0, 1])
u += self.type2test()
self.assertEqual(u, self.type2test([0, 1]))
u += self.type2test([2, 3])
self.assertEqual(u, self.type2test([0, 1, 2, 3]))
u += self.type2test([4, 5])
self.assertEqual(u, self.type2test([0, 1, 2, 3, 4, 5]))
u = self.type2test("spam")
u += self.type2test("eggs")
self.assertEqual(u, self.type2test("spameggs"))
def test_imul(self):
u = self.type2test([0, 1])
u *= 3
self.assertEqual(u, self.type2test([0, 1, 0, 1, 0, 1]))
def test_getitemoverwriteiter(self):
# Verify that __getitem__ overrides are not recognized by __iter__
class T(self.type2test):
def __getitem__(self, key):
return str(key) + '!!!'
self.assertEqual(iter(T((1,2))).next(), 1)
def test_repeat(self):
for m in xrange(4):
s = tuple(range(m))
for n in xrange(-3, 5):
self.assertEqual(self.type2test(s*n), self.type2test(s)*n)
self.assertEqual(self.type2test(s)*(-4), self.type2test([]))
self.assertEqual(id(s), id(s*1))
def test_bigrepeat(self):
import sys
if sys.maxint <= 2147483647:
x = self.type2test([0])
x *= 2**16
self.assertRaises(MemoryError, x.__mul__, 2**16)
if hasattr(x, '__imul__'):
self.assertRaises(MemoryError, x.__imul__, 2**16)
def test_subscript(self):
a = self.type2test([10, 11])
self.assertEqual(a.__getitem__(0L), 10)
self.assertEqual(a.__getitem__(1L), 11)
self.assertEqual(a.__getitem__(-2L), 10)
self.assertEqual(a.__getitem__(-1L), 11)
self.assertRaises(IndexError, a.__getitem__, -3)
self.assertRaises(IndexError, a.__getitem__, 3)
self.assertEqual(a.__getitem__(slice(0,1)), self.type2test([10]))
self.assertEqual(a.__getitem__(slice(1,2)), self.type2test([11]))
self.assertEqual(a.__getitem__(slice(0,2)), self.type2test([10, 11]))
self.assertEqual(a.__getitem__(slice(0,3)), self.type2test([10, 11]))
self.assertEqual(a.__getitem__(slice(3,5)), self.type2test([]))
self.assertRaises(ValueError, a.__getitem__, slice(0, 10, 0))
self.assertRaises(TypeError, a.__getitem__, 'x')
def test_count(self):
a = self.type2test([0, 1, 2])*3
self.assertEqual(a.count(0), 3)
self.assertEqual(a.count(1), 3)
self.assertEqual(a.count(3), 0)
self.assertRaises(TypeError, a.count)
class BadExc(Exception):
pass
class BadCmp:
def __eq__(self, other):
if other == 2:
raise BadExc()
return False
self.assertRaises(BadExc, a.count, BadCmp())
def test_index(self):
u = self.type2test([0, 1])
self.assertEqual(u.index(0), 0)
self.assertEqual(u.index(1), 1)
self.assertRaises(ValueError, u.index, 2)
u = self.type2test([-2, -1, 0, 0, 1, 2])
self.assertEqual(u.count(0), 2)
self.assertEqual(u.index(0), 2)
self.assertEqual(u.index(0, 2), 2)
self.assertEqual(u.index(-2, -10), 0)
self.assertEqual(u.index(0, 3), 3)
self.assertEqual(u.index(0, 3, 4), 3)
self.assertRaises(ValueError, u.index, 2, 0, -10)
self.assertRaises(TypeError, u.index)
class BadExc(Exception):
pass
class BadCmp:
def __eq__(self, other):
if other == 2:
raise BadExc()
return False
a = self.type2test([0, 1, 2, 3])
self.assertRaises(BadExc, a.index, BadCmp())
a = self.type2test([-2, -1, 0, 0, 1, 2])
self.assertEqual(a.index(0), 2)
self.assertEqual(a.index(0, 2), 2)
self.assertEqual(a.index(0, -4), 2)
self.assertEqual(a.index(-2, -10), 0)
self.assertEqual(a.index(0, 3), 3)
self.assertEqual(a.index(0, -3), 3)
self.assertEqual(a.index(0, 3, 4), 3)
self.assertEqual(a.index(0, -3, -2), 3)
self.assertEqual(a.index(0, -4*sys.maxint, 4*sys.maxint), 2)
self.assertRaises(ValueError, a.index, 0, 4*sys.maxint,-4*sys.maxint)
self.assertRaises(ValueError, a.index, 2, 0, -10)
© 2015 - 2025 Weber Informatics LLC | Privacy Policy