cpython/Lib/test/list_tests.py at 3.8 · python-emscripten/cpython · GitHub

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"""

Tests common to list and UserList.UserList

"""

import sys

import os

from functools import cmp_to_key

from test import support, seq_tests

class CommonTest(seq_tests.CommonTest):

def test_init(self):

# Iterable arg is optional

self.assertEqual(self.type2test([]), self.type2test())

# Init clears previous values

a = self.type2test([1, 2, 3])

a.__init__()

self.assertEqual(a, self.type2test([]))

# Init overwrites previous values

a = self.type2test([1, 2, 3])

a.__init__([4, 5, 6])

self.assertEqual(a, self.type2test([4, 5, 6]))

# Mutables always return a new object

b = self.type2test(a)

self.assertNotEqual(id(a), id(b))

self.assertEqual(a, b)

def test_getitem_error(self):

a = []

msg = "list indices must be integers or slices"

with self.assertRaisesRegex(TypeError, msg):

a['a']

def test_setitem_error(self):

a = []

msg = "list indices must be integers or slices"

with self.assertRaisesRegex(TypeError, msg):

a['a'] = "python"

def test_repr(self):

l0 = []

l2 = [0, 1, 2]

a0 = self.type2test(l0)

a2 = self.type2test(l2)

self.assertEqual(str(a0), str(l0))

self.assertEqual(repr(a0), repr(l0))

self.assertEqual(repr(a2), repr(l2))

self.assertEqual(str(a2), "[0, 1, 2]")

self.assertEqual(repr(a2), "[0, 1, 2]")

a2.append(a2)

a2.append(3)

self.assertEqual(str(a2), "[0, 1, 2, [...], 3]")

self.assertEqual(repr(a2), "[0, 1, 2, [...], 3]")

def test_repr_deep(self):

a = self.type2test([])

for i in range(sys.getrecursionlimit() + 100):

a = self.type2test([a])

self.assertRaises(RecursionError, repr, a)

def test_print(self):

d = self.type2test(range(200))

d.append(d)

d.extend(range(200,400))

d.append(d)

d.append(400)

try:

with open(support.TESTFN, "w") as fo:

fo.write(str(d))

with open(support.TESTFN, "r") as fo:

self.assertEqual(fo.read(), repr(d))

finally:

os.remove(support.TESTFN)

def test_set_subscript(self):

a = self.type2test(range(20))

self.assertRaises(ValueError, a.__setitem__, slice(0, 10, 0), [1,2,3])

self.assertRaises(TypeError, a.__setitem__, slice(0, 10), 1)

self.assertRaises(ValueError, a.__setitem__, slice(0, 10, 2), [1,2])

self.assertRaises(TypeError, a.__getitem__, 'x', 1)

a[slice(2,10,3)] = [1,2,3]

self.assertEqual(a, self.type2test([0, 1, 1, 3, 4, 2, 6, 7, 3,

9, 10, 11, 12, 13, 14, 15,

16, 17, 18, 19]))

def test_reversed(self):

a = self.type2test(range(20))

r = reversed(a)

self.assertEqual(list(r), self.type2test(range(19, -1, -1)))

self.assertRaises(StopIteration, next, r)

self.assertEqual(list(reversed(self.type2test())),

self.type2test())

# Bug 3689: make sure list-reversed-iterator doesn't have __len__

self.assertRaises(TypeError, len, reversed([1,2,3]))

def test_setitem(self):

a = self.type2test([0, 1])

a[0] = 0

a[1] = 100

self.assertEqual(a, self.type2test([0, 100]))

a[-1] = 200

self.assertEqual(a, self.type2test([0, 200]))

a[-2] = 100

self.assertEqual(a, self.type2test([100, 200]))

self.assertRaises(IndexError, a.__setitem__, -3, 200)

self.assertRaises(IndexError, a.__setitem__, 2, 200)

a = self.type2test([])

self.assertRaises(IndexError, a.__setitem__, 0, 200)

self.assertRaises(IndexError, a.__setitem__, -1, 200)

self.assertRaises(TypeError, a.__setitem__)

a = self.type2test([0,1,2,3,4])

a[0] = 1

a[1] = 2

a[2] = 3

self.assertEqual(a, self.type2test([1,2,3,3,4]))

a[0] = 5

a[1] = 6

a[2] = 7

self.assertEqual(a, self.type2test([5,6,7,3,4]))

a[-2] = 88

a[-1] = 99

self.assertEqual(a, self.type2test([5,6,7,88,99]))

a[-2] = 8

a[-1] = 9

self.assertEqual(a, self.type2test([5,6,7,8,9]))

msg = "list indices must be integers or slices"

with self.assertRaisesRegex(TypeError, msg):

a['a'] = "python"

def test_delitem(self):

a = self.type2test([0, 1])

del a[1]

self.assertEqual(a, [0])

del a[0]

self.assertEqual(a, [])

a = self.type2test([0, 1])

del a[-2]

self.assertEqual(a, [1])

del a[-1]

self.assertEqual(a, [])

a = self.type2test([0, 1])

self.assertRaises(IndexError, a.__delitem__, -3)

self.assertRaises(IndexError, a.__delitem__, 2)

a = self.type2test([])

self.assertRaises(IndexError, a.__delitem__, 0)

self.assertRaises(TypeError, a.__delitem__)

def test_setslice(self):

l = [0, 1]

a = self.type2test(l)

for i in range(-3, 4):

a[:i] = l[:i]

self.assertEqual(a, l)

a2 = a[:]

a2[:i] = a[:i]

self.assertEqual(a2, a)

a[i:] = l[i:]

self.assertEqual(a, l)

a2 = a[:]

a2[i:] = a[i:]

self.assertEqual(a2, a)

for j in range(-3, 4):

a[i:j] = l[i:j]

self.assertEqual(a, l)

a2 = a[:]

a2[i:j] = a[i:j]

self.assertEqual(a2, a)

aa2 = a2[:]

aa2[:0] = [-2, -1]

self.assertEqual(aa2, [-2, -1, 0, 1])

aa2[0:] = []

self.assertEqual(aa2, [])

a = self.type2test([1, 2, 3, 4, 5])

a[:-1] = a

self.assertEqual(a, self.type2test([1, 2, 3, 4, 5, 5]))

a = self.type2test([1, 2, 3, 4, 5])

a[1:] = a

self.assertEqual(a, self.type2test([1, 1, 2, 3, 4, 5]))

a = self.type2test([1, 2, 3, 4, 5])

a[1:-1] = a

self.assertEqual(a, self.type2test([1, 1, 2, 3, 4, 5, 5]))

a = self.type2test([])

a[:] = tuple(range(10))

self.assertEqual(a, self.type2test(range(10)))

self.assertRaises(TypeError, a.__setitem__, slice(0, 1, 5))

self.assertRaises(TypeError, a.__setitem__)

def test_delslice(self):

a = self.type2test([0, 1])

del a[1:2]

del a[0:1]

self.assertEqual(a, self.type2test([]))

a = self.type2test([0, 1])

del a[1:2]

del a[0:1]

self.assertEqual(a, self.type2test([]))

a = self.type2test([0, 1])

del a[-2:-1]

self.assertEqual(a, self.type2test([1]))

a = self.type2test([0, 1])

del a[-2:-1]

self.assertEqual(a, self.type2test([1]))

a = self.type2test([0, 1])

del a[1:]

del a[:1]

self.assertEqual(a, self.type2test([]))

a = self.type2test([0, 1])

del a[1:]

del a[:1]

self.assertEqual(a, self.type2test([]))

a = self.type2test([0, 1])

del a[-1:]

self.assertEqual(a, self.type2test([0]))

a = self.type2test([0, 1])

del a[-1:]

self.assertEqual(a, self.type2test([0]))

a = self.type2test([0, 1])

del a[:]

self.assertEqual(a, self.type2test([]))

def test_append(self):

a = self.type2test([])

a.append(0)

a.append(1)

a.append(2)

self.assertEqual(a, self.type2test([0, 1, 2]))

self.assertRaises(TypeError, a.append)

def test_extend(self):

a1 = self.type2test([0])

a2 = self.type2test((0, 1))

a = a1[:]

a.extend(a2)

self.assertEqual(a, a1 + a2)

a.extend(self.type2test([]))

self.assertEqual(a, a1 + a2)

a.extend(a)

self.assertEqual(a, self.type2test([0, 0, 1, 0, 0, 1]))

a = self.type2test("spam")

a.extend("eggs")

self.assertEqual(a, list("spameggs"))

self.assertRaises(TypeError, a.extend, None)

self.assertRaises(TypeError, a.extend)

# overflow test. issue1621

class CustomIter:

def __iter__(self):

return self

def __next__(self):

raise StopIteration

def __length_hint__(self):

return sys.maxsize

a = self.type2test([1,2,3,4])

a.extend(CustomIter())

self.assertEqual(a, [1,2,3,4])

def test_insert(self):

a = self.type2test([0, 1, 2])

a.insert(0, -2)

a.insert(1, -1)

a.insert(2, 0)

self.assertEqual(a, [-2, -1, 0, 0, 1, 2])

b = a[:]

b.insert(-2, "foo")

b.insert(-200, "left")

b.insert(200, "right")

self.assertEqual(b, self.type2test(["left",-2,-1,0,0,"foo",1,2,"right"]))

self.assertRaises(TypeError, a.insert)

def test_pop(self):

a = self.type2test([-1, 0, 1])

a.pop()

self.assertEqual(a, [-1, 0])

a.pop(0)

self.assertEqual(a, [0])

self.assertRaises(IndexError, a.pop, 5)

a.pop(0)

self.assertEqual(a, [])

self.assertRaises(IndexError, a.pop)

self.assertRaises(TypeError, a.pop, 42, 42)

a = self.type2test([0, 10, 20, 30, 40])

def test_remove(self):

a = self.type2test([0, 0, 1])

a.remove(1)

self.assertEqual(a, [0, 0])

a.remove(0)

self.assertEqual(a, [0])

a.remove(0)

self.assertEqual(a, [])

self.assertRaises(ValueError, a.remove, 0)

self.assertRaises(TypeError, a.remove)

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.remove, BadCmp())

class BadCmp2:

def __eq__(self, other):

raise BadExc()

d = self.type2test('abcdefghcij')

d.remove('c')

self.assertEqual(d, self.type2test('abdefghcij'))

d.remove('c')

self.assertEqual(d, self.type2test('abdefghij'))

self.assertRaises(ValueError, d.remove, 'c')

self.assertEqual(d, self.type2test('abdefghij'))

# Handle comparison errors

d = self.type2test(['a', 'b', BadCmp2(), 'c'])

e = self.type2test(d)

self.assertRaises(BadExc, d.remove, 'c')

for x, y in zip(d, e):

# verify that original order and values are retained.

self.assertIs(x, y)

def test_index(self):

super().test_index()

a = self.type2test([-2, -1, 0, 0, 1, 2])

a.remove(0)

self.assertRaises(ValueError, a.index, 2, 0, 4)

self.assertEqual(a, self.type2test([-2, -1, 0, 1, 2]))

# Test modifying the list during index's iteration

class EvilCmp:

def __init__(self, victim):

self.victim = victim

def __eq__(self, other):

del self.victim[:]

return False

a = self.type2test()

a[:] = [EvilCmp(a) for _ in range(100)]

# This used to seg fault before patch #1005778

self.assertRaises(ValueError, a.index, None)

def test_reverse(self):

u = self.type2test([-2, -1, 0, 1, 2])

u2 = u[:]

u.reverse()

self.assertEqual(u, [2, 1, 0, -1, -2])

u.reverse()

self.assertEqual(u, u2)

self.assertRaises(TypeError, u.reverse, 42)

def test_clear(self):

u = self.type2test([2, 3, 4])

u.clear()

self.assertEqual(u, [])

u = self.type2test([])

u.clear()

self.assertEqual(u, [])

u = self.type2test([])

u.append(1)

u.clear()

u.append(2)

self.assertEqual(u, [2])

self.assertRaises(TypeError, u.clear, None)

def test_copy(self):

u = self.type2test([1, 2, 3])

v = u.copy()

self.assertEqual(v, [1, 2, 3])

u = self.type2test([])

v = u.copy()

self.assertEqual(v, [])

# test that it's indeed a copy and not a reference

u = self.type2test(['a', 'b'])

v = u.copy()

v.append('i')

self.assertEqual(u, ['a', 'b'])

self.assertEqual(v, u + ['i'])

# test that it's a shallow, not a deep copy

u = self.type2test([1, 2, [3, 4], 5])

v = u.copy()

self.assertEqual(u, v)

self.assertIs(v[3], u[3])

self.assertRaises(TypeError, u.copy, None)

def test_sort(self):

u = self.type2test([1, 0])

u.sort()

self.assertEqual(u, [0, 1])

u = self.type2test([2,1,0,-1,-2])

u.sort()

self.assertEqual(u, self.type2test([-2,-1,0,1,2]))

self.assertRaises(TypeError, u.sort, 42, 42)

def revcmp(a, b):

if a == b:

return 0

elif a < b:

return 1

else: # a > b

return -1

u.sort(key=cmp_to_key(revcmp))

self.assertEqual(u, self.type2test([2,1,0,-1,-2]))

# The following dumps core in unpatched Python 1.5:

def myComparison(x,y):

xmod, ymod = x%3, y%7

if xmod == ymod:

return 0

elif xmod < ymod:

return -1

else: # xmod > ymod

return 1

z = self.type2test(range(12))

z.sort(key=cmp_to_key(myComparison))

self.assertRaises(TypeError, z.sort, 2)

def selfmodifyingComparison(x,y):

z.append(1)

if x == y:

return 0

elif x < y:

return -1

else: # x > y

return 1

self.assertRaises(ValueError, z.sort,

key=cmp_to_key(selfmodifyingComparison))

self.assertRaises(TypeError, z.sort, 42, 42, 42, 42)

def test_slice(self):

u = self.type2test("spam")

u[:2] = "h"

self.assertEqual(u, list("ham"))

def test_iadd(self):

super().test_iadd()

u = self.type2test([0, 1])

u2 = u

u += [2, 3]

self.assertIs(u, u2)

u = self.type2test("spam")

u += "eggs"

self.assertEqual(u, self.type2test("spameggs"))

self.assertRaises(TypeError, u.__iadd__, None)

def test_imul(self):

super().test_imul()

s = self.type2test([])

oldid = id(s)

s *= 10

self.assertEqual(id(s), oldid)

def test_extendedslicing(self):

# subscript

a = self.type2test([0,1,2,3,4])

# deletion

del a[::2]

self.assertEqual(a, self.type2test([1,3]))

a = self.type2test(range(5))

del a[1::2]

self.assertEqual(a, self.type2test([0,2,4]))

a = self.type2test(range(5))

del a[1::-2]

self.assertEqual(a, self.type2test([0,2,3,4]))

a = self.type2test(range(10))

del a[::1000]

self.assertEqual(a, self.type2test([1, 2, 3, 4, 5, 6, 7, 8, 9]))

# assignment

a = self.type2test(range(10))

a[::2] = [-1]*5

self.assertEqual(a, self.type2test([-1, 1, -1, 3, -1, 5, -1, 7, -1, 9]))

a = self.type2test(range(10))

a[::-4] = [10]*3

self.assertEqual(a, self.type2test([0, 10, 2, 3, 4, 10, 6, 7, 8 ,10]))

a = self.type2test(range(4))

a[::-1] = a

self.assertEqual(a, self.type2test([3, 2, 1, 0]))

a = self.type2test(range(10))

b = a[:]

c = a[:]

a[2:3] = self.type2test(["two", "elements"])

b[slice(2,3)] = self.type2test(["two", "elements"])

c[2:3:] = self.type2test(["two", "elements"])

self.assertEqual(a, b)

self.assertEqual(a, c)

a = self.type2test(range(10))

a[::2] = tuple(range(5))

self.assertEqual(a, self.type2test([0, 1, 1, 3, 2, 5, 3, 7, 4, 9]))

# test issue7788

a = self.type2test(range(10))

del a[9::1<<333]

def test_constructor_exception_handling(self):

# Bug #1242657

class F(object):

def __iter__(self):

raise KeyboardInterrupt

self.assertRaises(KeyboardInterrupt, list, F())

def test_exhausted_iterator(self):

a = self.type2test([1, 2, 3])

exhit = iter(a)

empit = iter(a)

for x in exhit: # exhaust the iterator

next(empit) # not exhausted

a.append(9)

self.assertEqual(list(exhit), [])

self.assertEqual(list(empit), [9])

self.assertEqual(a, self.type2test([1, 2, 3, 9]))

cpython/Lib/test/list_tests.py at 3.8 · python-emscripten/cpython · GitHub

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