lib-python.2.5.test.seq_tests.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.
"""
Tests common to tuple, list and UserList.UserList
"""
import unittest
from test import test_support
# 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]
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))
# 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.assert_(not self.type2test())
self.assert_(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]))
self.assertRaises(TypeError, u.__getslice__)
def test_contains(self):
u = self.type2test([0, 1, 2])
for i in u:
self.assert_(i in u)
for i in min(u)-1, max(u)+1:
self.assert_(i not in 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
def __hash__(self):
raise NotImplemented
self.assert_(AllEq() not in self.type2test([]))
self.assert_(AllEq() in 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.assert_(1 in 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.assert_(u3 is not 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')