/usr/lib/python2.7/test/seq_tests.py is in libpython2.7-testsuite 2.7.6-8ubuntu0.5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 | """
Tests common to tuple, list and UserList.UserList
"""
import unittest
import sys
# 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.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]))
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)
|