mirrors/cpython
0
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2024-12-15 12:54:31 +08:00
Code Issues Packages Projects Releases Wiki Activity
fd24f9e51e
cpython/Lib/test/test_builtin.py
Antoine Pitrou 1ce4b14c4d Skip early if stdin and stdout are not ttys
2011-11-06 03:03:18 +01:00

1462 lines
50 KiB
Python
Raw Blame History

# Python test set -- built-in functions
import platform
import unittest
import sys
import warnings
import collections
import io
import os
import ast
import types
import builtins
import random
import traceback
from test.support import fcmp, TESTFN, unlink, run_unittest, check_warnings
from operator import neg
try:
import pty, signal
except ImportError:
pty = signal = None
class Squares:
def __init__(self, max):
self.max = max
self.sofar = []
def __len__(self): return len(self.sofar)
def __getitem__(self, i):
if not 0 <= i < self.max: raise IndexError
n = len(self.sofar)
while n <= i:
self.sofar.append(n*n)
n += 1
return self.sofar[i]
class StrSquares:
def __init__(self, max):
self.max = max
self.sofar = []
def __len__(self):
return len(self.sofar)
def __getitem__(self, i):
if not 0 <= i < self.max:
raise IndexError
n = len(self.sofar)
while n <= i:
self.sofar.append(str(n*n))
n += 1
return self.sofar[i]
class BitBucket:
def write(self, line):
pass
test_conv_no_sign = [
('0', 0),
('1', 1),
('9', 9),
('10', 10),
('99', 99),
('100', 100),
('314', 314),
(' 314', 314),
('314 ', 314),
(' \t\t 314 \t\t ', 314),
(repr(sys.maxsize), sys.maxsize),
(' 1x', ValueError),
(' 1 ', 1),
(' 1\02 ', ValueError),
('', ValueError),
(' ', ValueError),
(' \t\t ', ValueError),
(str(b'\u0663\u0661\u0664 ','raw-unicode-escape'), 314),
(chr(0x200), ValueError),
]
test_conv_sign = [
('0', 0),
('1', 1),
('9', 9),
('10', 10),
('99', 99),
('100', 100),
('314', 314),
(' 314', ValueError),
('314 ', 314),
(' \t\t 314 \t\t ', ValueError),
(repr(sys.maxsize), sys.maxsize),
(' 1x', ValueError),
(' 1 ', ValueError),
(' 1\02 ', ValueError),
('', ValueError),
(' ', ValueError),
(' \t\t ', ValueError),
(str(b'\u0663\u0661\u0664 ','raw-unicode-escape'), 314),
(chr(0x200), ValueError),
]
class TestFailingBool:
def __bool__(self):
raise RuntimeError
class TestFailingIter:
def __iter__(self):
raise RuntimeError
class BuiltinTest(unittest.TestCase):
def test_import(self):
__import__('sys')
__import__('time')
__import__('string')
__import__(name='sys')
__import__(name='time', level=0)
self.assertRaises(ImportError, __import__, 'spamspam')
self.assertRaises(TypeError, __import__, 1, 2, 3, 4)
self.assertRaises(ValueError, __import__, '')
self.assertRaises(TypeError, __import__, 'sys', name='sys')
def test_abs(self):
# int
self.assertEqual(abs(0), 0)
self.assertEqual(abs(1234), 1234)
self.assertEqual(abs(-1234), 1234)
self.assertTrue(abs(-sys.maxsize-1) > 0)
# float
self.assertEqual(abs(0.0), 0.0)
self.assertEqual(abs(3.14), 3.14)
self.assertEqual(abs(-3.14), 3.14)
# str
self.assertRaises(TypeError, abs, 'a')
# bool
self.assertEqual(abs(True), 1)
self.assertEqual(abs(False), 0)
# other
self.assertRaises(TypeError, abs)
self.assertRaises(TypeError, abs, None)
class AbsClass(object):
def __abs__(self):
return -5
self.assertEqual(abs(AbsClass()), -5)
def test_all(self):
self.assertEqual(all([2, 4, 6]), True)
self.assertEqual(all([2, None, 6]), False)
self.assertRaises(RuntimeError, all, [2, TestFailingBool(), 6])
self.assertRaises(RuntimeError, all, TestFailingIter())
self.assertRaises(TypeError, all, 10) # Non-iterable
self.assertRaises(TypeError, all) # No args
self.assertRaises(TypeError, all, [2, 4, 6], []) # Too many args
self.assertEqual(all([]), True) # Empty iterator
S = [50, 60]
self.assertEqual(all(x > 42 for x in S), True)
S = [50, 40, 60]
self.assertEqual(all(x > 42 for x in S), False)
def test_any(self):
self.assertEqual(any([None, None, None]), False)
self.assertEqual(any([None, 4, None]), True)
self.assertRaises(RuntimeError, any, [None, TestFailingBool(), 6])
self.assertRaises(RuntimeError, all, TestFailingIter())
self.assertRaises(TypeError, any, 10) # Non-iterable
self.assertRaises(TypeError, any) # No args
self.assertRaises(TypeError, any, [2, 4, 6], []) # Too many args
self.assertEqual(any([]), False) # Empty iterator
S = [40, 60, 30]
self.assertEqual(any(x > 42 for x in S), True)
S = [10, 20, 30]
self.assertEqual(any(x > 42 for x in S), False)
def test_ascii(self):
self.assertEqual(ascii(''), '\'\'')
self.assertEqual(ascii(0), '0')
self.assertEqual(ascii(()), '()')
self.assertEqual(ascii([]), '[]')
self.assertEqual(ascii({}), '{}')
a = []
a.append(a)
self.assertEqual(ascii(a), '[[...]]')
a = {}
a[0] = a
self.assertEqual(ascii(a), '{0: {...}}')
# Advanced checks for unicode strings
def _check_uni(s):
self.assertEqual(ascii(s), repr(s))
_check_uni("'")
_check_uni('"')
_check_uni('"\'')
_check_uni('\0')
_check_uni('\r\n\t .')
# Unprintable non-ASCII characters
_check_uni('\x85')
_check_uni('\u1fff')
_check_uni('\U00012fff')
# Lone surrogates
_check_uni('\ud800')
_check_uni('\udfff')
# Issue #9804: surrogates should be joined even for printable
# wide characters (UCS-2 builds).
self.assertEqual(ascii('\U0001d121'), "'\\U0001d121'")
# All together
s = "'\0\"\n\r\t abcd\x85é\U00012fff\uD800\U0001D121xxx."
self.assertEqual(ascii(s),
r"""'\'\x00"\n\r\t abcd\x85\xe9\U00012fff\ud800\U0001d121xxx.'""")
def test_neg(self):
x = -sys.maxsize-1
self.assertTrue(isinstance(x, int))
self.assertEqual(-x, sys.maxsize+1)
def test_callable(self):
self.assertTrue(callable(len))
self.assertFalse(callable("a"))
self.assertTrue(callable(callable))
self.assertTrue(callable(lambda x, y: x + y))
self.assertFalse(callable(__builtins__))
def f(): pass
self.assertTrue(callable(f))
class C1:
def meth(self): pass
self.assertTrue(callable(C1))
c = C1()
self.assertTrue(callable(c.meth))
self.assertFalse(callable(c))
# __call__ is looked up on the class, not the instance
c.__call__ = None
self.assertFalse(callable(c))
c.__call__ = lambda self: 0
self.assertFalse(callable(c))
del c.__call__
self.assertFalse(callable(c))
class C2(object):
def __call__(self): pass
c2 = C2()
self.assertTrue(callable(c2))
c2.__call__ = None
self.assertTrue(callable(c2))
class C3(C2): pass
c3 = C3()
self.assertTrue(callable(c3))
def test_chr(self):
self.assertEqual(chr(32), ' ')
self.assertEqual(chr(65), 'A')
self.assertEqual(chr(97), 'a')
self.assertEqual(chr(0xff), '\xff')
self.assertRaises(ValueError, chr, 1<<24)
self.assertEqual(chr(sys.maxunicode),
str(('\\U%08x' % (sys.maxunicode)).encode("ascii"),
'unicode-escape'))
self.assertRaises(TypeError, chr)
self.assertEqual(chr(0x0000FFFF), "\U0000FFFF")
self.assertEqual(chr(0x00010000), "\U00010000")
self.assertEqual(chr(0x00010001), "\U00010001")
self.assertEqual(chr(0x000FFFFE), "\U000FFFFE")
self.assertEqual(chr(0x000FFFFF), "\U000FFFFF")
self.assertEqual(chr(0x00100000), "\U00100000")
self.assertEqual(chr(0x00100001), "\U00100001")
self.assertEqual(chr(0x0010FFFE), "\U0010FFFE")
self.assertEqual(chr(0x0010FFFF), "\U0010FFFF")
self.assertRaises(ValueError, chr, -1)
self.assertRaises(ValueError, chr, 0x00110000)
self.assertRaises((OverflowError, ValueError), chr, 2**32)
def test_cmp(self):
self.assertTrue(not hasattr(builtins, "cmp"))
def test_compile(self):
compile('print(1)\n', '', 'exec')
bom = b'\xef\xbb\xbf'
compile(bom + b'print(1)\n', '', 'exec')
compile(source='pass', filename='?', mode='exec')
compile(dont_inherit=0, filename='tmp', source='0', mode='eval')
compile('pass', '?', dont_inherit=1, mode='exec')
compile(memoryview(b"text"), "name", "exec")
self.assertRaises(TypeError, compile)
self.assertRaises(ValueError, compile, 'print(42)\n', '<string>', 'badmode')
self.assertRaises(ValueError, compile, 'print(42)\n', '<string>', 'single', 0xff)
self.assertRaises(TypeError, compile, chr(0), 'f', 'exec')
self.assertRaises(TypeError, compile, 'pass', '?', 'exec',
mode='eval', source='0', filename='tmp')
compile('print("\xe5")\n', '', 'exec')
self.assertRaises(TypeError, compile, chr(0), 'f', 'exec')
self.assertRaises(ValueError, compile, str('a = 1'), 'f', 'bad')
# test the optimize argument
codestr = '''def f():
"""doc"""
try:
assert False
except AssertionError:
return (True, f.__doc__)
else:
return (False, f.__doc__)
'''
def f(): """doc"""
values = [(-1, __debug__, f.__doc__),
(0, True, 'doc'),
(1, False, 'doc'),
(2, False, None)]
for optval, debugval, docstring in values:
# test both direct compilation and compilation via AST
codeobjs = []
codeobjs.append(compile(codestr, "<test>", "exec", optimize=optval))
tree = ast.parse(codestr)
codeobjs.append(compile(tree, "<test>", "exec", optimize=optval))
for code in codeobjs:
ns = {}
exec(code, ns)
rv = ns['f']()
self.assertEqual(rv, (debugval, docstring))
def test_delattr(self):
sys.spam = 1
delattr(sys, 'spam')
self.assertRaises(TypeError, delattr)
def test_dir(self):
# dir(wrong number of arguments)
self.assertRaises(TypeError, dir, 42, 42)
# dir() - local scope
local_var = 1
self.assertIn('local_var', dir())
# dir(module)
self.assertIn('exit', dir(sys))
# dir(module_with_invalid__dict__)
class Foo(types.ModuleType):
__dict__ = 8
f = Foo("foo")
self.assertRaises(TypeError, dir, f)
# dir(type)
self.assertIn("strip", dir(str))
self.assertNotIn("__mro__", dir(str))
# dir(obj)
class Foo(object):
def __init__(self):
self.x = 7
self.y = 8
self.z = 9
f = Foo()
self.assertIn("y", dir(f))
# dir(obj_no__dict__)
class Foo(object):
__slots__ = []
f = Foo()
self.assertIn("__repr__", dir(f))
# dir(obj_no__class__with__dict__)
# (an ugly trick to cause getattr(f, "__class__") to fail)
class Foo(object):
__slots__ = ["__class__", "__dict__"]
def __init__(self):
self.bar = "wow"
f = Foo()
self.assertNotIn("__repr__", dir(f))
self.assertIn("bar", dir(f))
# dir(obj_using __dir__)
class Foo(object):
def __dir__(self):
return ["kan", "ga", "roo"]
f = Foo()
self.assertTrue(dir(f) == ["ga", "kan", "roo"])
# dir(obj__dir__not_list)
class Foo(object):
def __dir__(self):
return 7
f = Foo()
self.assertRaises(TypeError, dir, f)
# dir(traceback)
try:
raise IndexError
except:
self.assertEqual(len(dir(sys.exc_info()[2])), 4)
def test_divmod(self):
self.assertEqual(divmod(12, 7), (1, 5))
self.assertEqual(divmod(-12, 7), (-2, 2))
self.assertEqual(divmod(12, -7), (-2, -2))
self.assertEqual(divmod(-12, -7), (1, -5))
self.assertEqual(divmod(-sys.maxsize-1, -1), (sys.maxsize+1, 0))
self.assertTrue(not fcmp(divmod(3.25, 1.0), (3.0, 0.25)))
self.assertTrue(not fcmp(divmod(-3.25, 1.0), (-4.0, 0.75)))
self.assertTrue(not fcmp(divmod(3.25, -1.0), (-4.0, -0.75)))
self.assertTrue(not fcmp(divmod(-3.25, -1.0), (3.0, -0.25)))
self.assertRaises(TypeError, divmod)
def test_eval(self):
self.assertEqual(eval('1+1'), 2)
self.assertEqual(eval(' 1+1\n'), 2)
globals = {'a': 1, 'b': 2}
locals = {'b': 200, 'c': 300}
self.assertEqual(eval('a', globals) , 1)
self.assertEqual(eval('a', globals, locals), 1)
self.assertEqual(eval('b', globals, locals), 200)
self.assertEqual(eval('c', globals, locals), 300)
globals = {'a': 1, 'b': 2}
locals = {'b': 200, 'c': 300}
bom = b'\xef\xbb\xbf'
self.assertEqual(eval(bom + b'a', globals, locals), 1)
self.assertEqual(eval('"\xe5"', globals), "\xe5")
self.assertRaises(TypeError, eval)
self.assertRaises(TypeError, eval, ())
self.assertRaises(SyntaxError, eval, bom[:2] + b'a')
def test_general_eval(self):
# Tests that general mappings can be used for the locals argument
class M:
"Test mapping interface versus possible calls from eval()."
def __getitem__(self, key):
if key == 'a':
return 12
raise KeyError
def keys(self):
return list('xyz')
m = M()
g = globals()
self.assertEqual(eval('a', g, m), 12)
self.assertRaises(NameError, eval, 'b', g, m)
self.assertEqual(eval('dir()', g, m), list('xyz'))
self.assertEqual(eval('globals()', g, m), g)
self.assertEqual(eval('locals()', g, m), m)
self.assertRaises(TypeError, eval, 'a', m)
class A:
"Non-mapping"
pass
m = A()
self.assertRaises(TypeError, eval, 'a', g, m)
# Verify that dict subclasses work as well
class D(dict):
def __getitem__(self, key):
if key == 'a':
return 12
return dict.__getitem__(self, key)
def keys(self):
return list('xyz')
d = D()
self.assertEqual(eval('a', g, d), 12)
self.assertRaises(NameError, eval, 'b', g, d)
self.assertEqual(eval('dir()', g, d), list('xyz'))
self.assertEqual(eval('globals()', g, d), g)
self.assertEqual(eval('locals()', g, d), d)
# Verify locals stores (used by list comps)
eval('[locals() for i in (2,3)]', g, d)
eval('[locals() for i in (2,3)]', g, collections.UserDict())
class SpreadSheet:
"Sample application showing nested, calculated lookups."
_cells = {}
def __setitem__(self, key, formula):
self._cells[key] = formula
def __getitem__(self, key):
return eval(self._cells[key], globals(), self)
ss = SpreadSheet()
ss['a1'] = '5'
ss['a2'] = 'a1*6'
ss['a3'] = 'a2*7'
self.assertEqual(ss['a3'], 210)
# Verify that dir() catches a non-list returned by eval
# SF bug #1004669
class C:
def __getitem__(self, item):
raise KeyError(item)
def keys(self):
return 1 # used to be 'a' but that's no longer an error
self.assertRaises(TypeError, eval, 'dir()', globals(), C())
def test_exec(self):
g = {}
exec('z = 1', g)
if '__builtins__' in g:
del g['__builtins__']
self.assertEqual(g, {'z': 1})
exec('z = 1+1', g)
if '__builtins__' in g:
del g['__builtins__']
self.assertEqual(g, {'z': 2})
g = {}
l = {}
with check_warnings():
warnings.filterwarnings("ignore", "global statement",
module="<string>")
exec('global a; a = 1; b = 2', g, l)
if '__builtins__' in g:
del g['__builtins__']
if '__builtins__' in l:
del l['__builtins__']
self.assertEqual((g, l), ({'a': 1}, {'b': 2}))
def test_exec_redirected(self):
savestdout = sys.stdout
sys.stdout = None # Whatever that cannot flush()
try:
# Used to raise SystemError('error return without exception set')
exec('a')
except NameError:
pass
finally:
sys.stdout = savestdout
def test_filter(self):
self.assertEqual(list(filter(lambda c: 'a' <= c <= 'z', 'Hello World')), list('elloorld'))
self.assertEqual(list(filter(None, [1, 'hello', [], [3], '', None, 9, 0])), [1, 'hello', [3], 9])
self.assertEqual(list(filter(lambda x: x > 0, [1, -3, 9, 0, 2])), [1, 9, 2])
self.assertEqual(list(filter(None, Squares(10))), [1, 4, 9, 16, 25, 36, 49, 64, 81])
self.assertEqual(list(filter(lambda x: x%2, Squares(10))), [1, 9, 25, 49, 81])
def identity(item):
return 1
filter(identity, Squares(5))
self.assertRaises(TypeError, filter)
class BadSeq(object):
def __getitem__(self, index):
if index<4:
return 42
raise ValueError
self.assertRaises(ValueError, list, filter(lambda x: x, BadSeq()))
def badfunc():
pass
self.assertRaises(TypeError, list, filter(badfunc, range(5)))
# test bltinmodule.c::filtertuple()
self.assertEqual(list(filter(None, (1, 2))), [1, 2])
self.assertEqual(list(filter(lambda x: x>=3, (1, 2, 3, 4))), [3, 4])
self.assertRaises(TypeError, list, filter(42, (1, 2)))
def test_getattr(self):
self.assertTrue(getattr(sys, 'stdout') is sys.stdout)
self.assertRaises(TypeError, getattr, sys, 1)
self.assertRaises(TypeError, getattr, sys, 1, "foo")
self.assertRaises(TypeError, getattr)
self.assertRaises(AttributeError, getattr, sys, chr(sys.maxunicode))
# unicode surrogates are not encodable to the default encoding (utf8)
self.assertRaises(AttributeError, getattr, 1, "\uDAD1\uD51E")
def test_hasattr(self):
self.assertTrue(hasattr(sys, 'stdout'))
self.assertRaises(TypeError, hasattr, sys, 1)
self.assertRaises(TypeError, hasattr)
self.assertEqual(False, hasattr(sys, chr(sys.maxunicode)))
# Check that hasattr propagates all exceptions outside of
# AttributeError.
class A:
def __getattr__(self, what):
raise SystemExit
self.assertRaises(SystemExit, hasattr, A(), "b")
class B:
def __getattr__(self, what):
raise ValueError
self.assertRaises(ValueError, hasattr, B(), "b")
def test_hash(self):
hash(None)
self.assertEqual(hash(1), hash(1))
self.assertEqual(hash(1), hash(1.0))
hash('spam')
self.assertEqual(hash('spam'), hash(b'spam'))
hash((0,1,2,3))
def f(): pass
self.assertRaises(TypeError, hash, [])
self.assertRaises(TypeError, hash, {})
# Bug 1536021: Allow hash to return long objects
class X:
def __hash__(self):
return 2**100
self.assertEqual(type(hash(X())), int)
class Z(int):
def __hash__(self):
return self
self.assertEqual(hash(Z(42)), hash(42))
def test_hex(self):
self.assertEqual(hex(16), '0x10')
self.assertEqual(hex(-16), '-0x10')
self.assertRaises(TypeError, hex, {})
def test_id(self):
id(None)
id(1)
id(1.0)
id('spam')
id((0,1,2,3))
id([0,1,2,3])
id({'spam': 1, 'eggs': 2, 'ham': 3})
# Test input() later, alphabetized as if it were raw_input
def test_iter(self):
self.assertRaises(TypeError, iter)
self.assertRaises(TypeError, iter, 42, 42)
lists = [("1", "2"), ["1", "2"], "12"]
for l in lists:
i = iter(l)
self.assertEqual(next(i), '1')
self.assertEqual(next(i), '2')
self.assertRaises(StopIteration, next, i)
def test_isinstance(self):
class C:
pass
class D(C):
pass
class E:
pass
c = C()
d = D()
e = E()
self.assertTrue(isinstance(c, C))
self.assertTrue(isinstance(d, C))
self.assertTrue(not isinstance(e, C))
self.assertTrue(not isinstance(c, D))
self.assertTrue(not isinstance('foo', E))
self.assertRaises(TypeError, isinstance, E, 'foo')
self.assertRaises(TypeError, isinstance)
def test_issubclass(self):
class C:
pass
class D(C):
pass
class E:
pass
c = C()
d = D()
e = E()
self.assertTrue(issubclass(D, C))
self.assertTrue(issubclass(C, C))
self.assertTrue(not issubclass(C, D))
self.assertRaises(TypeError, issubclass, 'foo', E)
self.assertRaises(TypeError, issubclass, E, 'foo')
self.assertRaises(TypeError, issubclass)
def test_len(self):
self.assertEqual(len('123'), 3)
self.assertEqual(len(()), 0)
self.assertEqual(len((1, 2, 3, 4)), 4)
self.assertEqual(len([1, 2, 3, 4]), 4)
self.assertEqual(len({}), 0)
self.assertEqual(len({'a':1, 'b': 2}), 2)
class BadSeq:
def __len__(self):
raise ValueError
self.assertRaises(ValueError, len, BadSeq())
class InvalidLen:
def __len__(self):
return None
self.assertRaises(TypeError, len, InvalidLen())
class FloatLen:
def __len__(self):
return 4.5
self.assertRaises(TypeError, len, FloatLen())
class HugeLen:
def __len__(self):
return sys.maxsize + 1
self.assertRaises(OverflowError, len, HugeLen())
class NoLenMethod(object): pass
self.assertRaises(TypeError, len, NoLenMethod())
def test_map(self):
self.assertEqual(
list(map(lambda x: x*x, range(1,4))),
[1, 4, 9]
)
try:
from math import sqrt
except ImportError:
def sqrt(x):
return pow(x, 0.5)
self.assertEqual(
list(map(lambda x: list(map(sqrt, x)), [[16, 4], [81, 9]])),
[[4.0, 2.0], [9.0, 3.0]]
)
self.assertEqual(
list(map(lambda x, y: x+y, [1,3,2], [9,1,4])),
[10, 4, 6]
)
def plus(*v):
accu = 0
for i in v: accu = accu + i
return accu
self.assertEqual(
list(map(plus, [1, 3, 7])),
[1, 3, 7]
)
self.assertEqual(
list(map(plus, [1, 3, 7], [4, 9, 2])),
[1+4, 3+9, 7+2]
)
self.assertEqual(
list(map(plus, [1, 3, 7], [4, 9, 2], [1, 1, 0])),
[1+4+1, 3+9+1, 7+2+0]
)
self.assertEqual(
list(map(int, Squares(10))),
[0, 1, 4, 9, 16, 25, 36, 49, 64, 81]
)
def Max(a, b):
if a is None:
return b
if b is None:
return a
return max(a, b)
self.assertEqual(
list(map(Max, Squares(3), Squares(2))),
[0, 1]
)
self.assertRaises(TypeError, map)
self.assertRaises(TypeError, map, lambda x: x, 42)
class BadSeq:
def __iter__(self):
raise ValueError
yield None
self.assertRaises(ValueError, list, map(lambda x: x, BadSeq()))
def badfunc(x):
raise RuntimeError
self.assertRaises(RuntimeError, list, map(badfunc, range(5)))
def test_max(self):
self.assertEqual(max('123123'), '3')
self.assertEqual(max(1, 2, 3), 3)
self.assertEqual(max((1, 2, 3, 1, 2, 3)), 3)
self.assertEqual(max([1, 2, 3, 1, 2, 3]), 3)
self.assertEqual(max(1, 2, 3.0), 3.0)
self.assertEqual(max(1, 2.0, 3), 3)
self.assertEqual(max(1.0, 2, 3), 3)
for stmt in (
"max(key=int)", # no args
"max(1, key=int)", # single arg not iterable
"max(1, 2, keystone=int)", # wrong keyword
"max(1, 2, key=int, abc=int)", # two many keywords
"max(1, 2, key=1)", # keyfunc is not callable
):
try:
exec(stmt, globals())
except TypeError:
pass
else:
self.fail(stmt)
self.assertEqual(max((1,), key=neg), 1) # one elem iterable
self.assertEqual(max((1,2), key=neg), 1) # two elem iterable
self.assertEqual(max(1, 2, key=neg), 1) # two elems
data = [random.randrange(200) for i in range(100)]
keys = dict((elem, random.randrange(50)) for elem in data)
f = keys.__getitem__
self.assertEqual(max(data, key=f),
sorted(reversed(data), key=f)[-1])
def test_min(self):
self.assertEqual(min('123123'), '1')
self.assertEqual(min(1, 2, 3), 1)
self.assertEqual(min((1, 2, 3, 1, 2, 3)), 1)
self.assertEqual(min([1, 2, 3, 1, 2, 3]), 1)
self.assertEqual(min(1, 2, 3.0), 1)
self.assertEqual(min(1, 2.0, 3), 1)
self.assertEqual(min(1.0, 2, 3), 1.0)
self.assertRaises(TypeError, min)
self.assertRaises(TypeError, min, 42)
self.assertRaises(ValueError, min, ())
class BadSeq:
def __getitem__(self, index):
raise ValueError
self.assertRaises(ValueError, min, BadSeq())
for stmt in (
"min(key=int)", # no args
"min(1, key=int)", # single arg not iterable
"min(1, 2, keystone=int)", # wrong keyword
"min(1, 2, key=int, abc=int)", # two many keywords
"min(1, 2, key=1)", # keyfunc is not callable
):
try:
exec(stmt, globals())
except TypeError:
pass
else:
self.fail(stmt)
self.assertEqual(min((1,), key=neg), 1) # one elem iterable
self.assertEqual(min((1,2), key=neg), 2) # two elem iterable
self.assertEqual(min(1, 2, key=neg), 2) # two elems
data = [random.randrange(200) for i in range(100)]
keys = dict((elem, random.randrange(50)) for elem in data)
f = keys.__getitem__
self.assertEqual(min(data, key=f),
sorted(data, key=f)[0])
def test_next(self):
it = iter(range(2))
self.assertEqual(next(it), 0)
self.assertEqual(next(it), 1)
self.assertRaises(StopIteration, next, it)
self.assertRaises(StopIteration, next, it)
self.assertEqual(next(it, 42), 42)
class Iter(object):
def __iter__(self):
return self
def __next__(self):
raise StopIteration
it = iter(Iter())
self.assertEqual(next(it, 42), 42)
self.assertRaises(StopIteration, next, it)
def gen():
yield 1
return
it = gen()
self.assertEqual(next(it), 1)
self.assertRaises(StopIteration, next, it)
self.assertEqual(next(it, 42), 42)
def test_oct(self):
self.assertEqual(oct(100), '0o144')
self.assertEqual(oct(-100), '-0o144')
self.assertRaises(TypeError, oct, ())
def write_testfile(self):
# NB the first 4 lines are also used to test input, below
fp = open(TESTFN, 'w')
try:
fp.write('1+1\n')
fp.write('The quick brown fox jumps over the lazy dog')
fp.write('.\n')
fp.write('Dear John\n')
fp.write('XXX'*100)
fp.write('YYY'*100)
finally:
fp.close()
def test_open(self):
self.write_testfile()
fp = open(TESTFN, 'r')
try:
self.assertEqual(fp.readline(4), '1+1\n')
self.assertEqual(fp.readline(), 'The quick brown fox jumps over the lazy dog.\n')
self.assertEqual(fp.readline(4), 'Dear')
self.assertEqual(fp.readline(100), ' John\n')
self.assertEqual(fp.read(300), 'XXX'*100)
self.assertEqual(fp.read(1000), 'YYY'*100)
finally:
fp.close()
unlink(TESTFN)
def test_ord(self):
self.assertEqual(ord(' '), 32)
self.assertEqual(ord('A'), 65)
self.assertEqual(ord('a'), 97)
self.assertEqual(ord('\x80'), 128)
self.assertEqual(ord('\xff'), 255)
self.assertEqual(ord(b' '), 32)
self.assertEqual(ord(b'A'), 65)
self.assertEqual(ord(b'a'), 97)
self.assertEqual(ord(b'\x80'), 128)
self.assertEqual(ord(b'\xff'), 255)
self.assertEqual(ord(chr(sys.maxunicode)), sys.maxunicode)
self.assertRaises(TypeError, ord, 42)
self.assertEqual(ord(chr(0x10FFFF)), 0x10FFFF)
self.assertEqual(ord("\U0000FFFF"), 0x0000FFFF)
self.assertEqual(ord("\U00010000"), 0x00010000)
self.assertEqual(ord("\U00010001"), 0x00010001)
self.assertEqual(ord("\U000FFFFE"), 0x000FFFFE)
self.assertEqual(ord("\U000FFFFF"), 0x000FFFFF)
self.assertEqual(ord("\U00100000"), 0x00100000)
self.assertEqual(ord("\U00100001"), 0x00100001)
self.assertEqual(ord("\U0010FFFE"), 0x0010FFFE)
self.assertEqual(ord("\U0010FFFF"), 0x0010FFFF)
def test_pow(self):
self.assertEqual(pow(0,0), 1)
self.assertEqual(pow(0,1), 0)
self.assertEqual(pow(1,0), 1)
self.assertEqual(pow(1,1), 1)
self.assertEqual(pow(2,0), 1)
self.assertEqual(pow(2,10), 1024)
self.assertEqual(pow(2,20), 1024*1024)
self.assertEqual(pow(2,30), 1024*1024*1024)
self.assertEqual(pow(-2,0), 1)
self.assertEqual(pow(-2,1), -2)
self.assertEqual(pow(-2,2), 4)
self.assertEqual(pow(-2,3), -8)
self.assertAlmostEqual(pow(0.,0), 1.)
self.assertAlmostEqual(pow(0.,1), 0.)
self.assertAlmostEqual(pow(1.,0), 1.)
self.assertAlmostEqual(pow(1.,1), 1.)
self.assertAlmostEqual(pow(2.,0), 1.)
self.assertAlmostEqual(pow(2.,10), 1024.)
self.assertAlmostEqual(pow(2.,20), 1024.*1024.)
self.assertAlmostEqual(pow(2.,30), 1024.*1024.*1024.)
self.assertAlmostEqual(pow(-2.,0), 1.)
self.assertAlmostEqual(pow(-2.,1), -2.)
self.assertAlmostEqual(pow(-2.,2), 4.)
self.assertAlmostEqual(pow(-2.,3), -8.)
for x in 2, 2.0:
for y in 10, 10.0:
for z in 1000, 1000.0:
if isinstance(x, float) or \
isinstance(y, float) or \
isinstance(z, float):
self.assertRaises(TypeError, pow, x, y, z)
else:
self.assertAlmostEqual(pow(x, y, z), 24.0)
self.assertAlmostEqual(pow(-1, 0.5), 1j)
self.assertAlmostEqual(pow(-1, 1/3), 0.5 + 0.8660254037844386j)
self.assertRaises(TypeError, pow, -1, -2, 3)
self.assertRaises(ValueError, pow, 1, 2, 0)
self.assertRaises(TypeError, pow)
def test_input(self):
self.write_testfile()
fp = open(TESTFN, 'r')
savestdin = sys.stdin
savestdout = sys.stdout # Eats the echo
try:
sys.stdin = fp
sys.stdout = BitBucket()
self.assertEqual(input(), "1+1")
self.assertEqual(input(), 'The quick brown fox jumps over the lazy dog.')
self.assertEqual(input('testing\n'), 'Dear John')
# SF 1535165: don't segfault on closed stdin
# sys.stdout must be a regular file for triggering
sys.stdout = savestdout
sys.stdin.close()
self.assertRaises(ValueError, input)
sys.stdout = BitBucket()
sys.stdin = io.StringIO("NULL\0")
self.assertRaises(TypeError, input, 42, 42)
sys.stdin = io.StringIO(" 'whitespace'")
self.assertEqual(input(), " 'whitespace'")
sys.stdin = io.StringIO()
self.assertRaises(EOFError, input)
del sys.stdout
self.assertRaises(RuntimeError, input, 'prompt')
del sys.stdin
self.assertRaises(RuntimeError, input, 'prompt')
finally:
sys.stdin = savestdin
sys.stdout = savestdout
fp.close()
unlink(TESTFN)
@unittest.skipUnless(pty, "the pty and signal modules must be available")
def check_input_tty(self, prompt, terminal_input, stdio_encoding=None):
if not sys.stdin.isatty() or not sys.stdout.isatty():
self.skipTest("stdin and stdout must be ttys")
r, w = os.pipe()
try:
pid, fd = pty.fork()
except (OSError, AttributeError) as e:
os.close(r)
os.close(w)
self.skipTest("pty.fork() raised {}".format(e))
if pid == 0:
# Child
try:
# Make sure we don't get stuck if there's a problem
signal.alarm(2)
os.close(r)
# Check the error handlers are accounted for
if stdio_encoding:
sys.stdin = io.TextIOWrapper(sys.stdin.detach(),
encoding=stdio_encoding,
errors='surrogateescape')
sys.stdout = io.TextIOWrapper(sys.stdout.detach(),
encoding=stdio_encoding,
errors='replace')
with open(w, "w") as wpipe:
print("tty =", sys.stdin.isatty() and sys.stdout.isatty(), file=wpipe)
print(ascii(input(prompt)), file=wpipe)
except:
traceback.print_exc()
finally:
# We don't want to return to unittest...
os._exit(0)
# Parent
os.close(w)
os.write(fd, terminal_input + b"\r\n")
# Get results from the pipe
with open(r, "r") as rpipe:
lines = []
while True:
line = rpipe.readline().strip()
if line == "":
# The other end was closed => the child exited
break
lines.append(line)
# Check the result was got and corresponds to the user's terminal input
if len(lines) != 2:
# Something went wrong, try to get at stderr
with open(fd, "r", encoding="ascii", errors="ignore") as child_output:
self.fail("got %d lines in pipe but expected 2, child output was:\n%s"
% (len(lines), child_output.read()))
os.close(fd)
# Check we did exercise the GNU readline path
self.assertIn(lines[0], {'tty = True', 'tty = False'})
if lines[0] != 'tty = True':
self.skipTest("standard IO in should have been a tty")
input_result = eval(lines[1]) # ascii() -> eval() roundtrip
if stdio_encoding:
expected = terminal_input.decode(stdio_encoding, 'surrogateescape')
else:
expected = terminal_input.decode(sys.stdin.encoding) # what else?
self.assertEqual(input_result, expected)
def test_input_tty(self):
# Test input() functionality when wired to a tty (the code path
# is different and invokes GNU readline if available).
self.check_input_tty("prompt", b"quux")
def test_input_tty_non_ascii(self):
# Check stdin/stdout encoding is used when invoking GNU readline
self.check_input_tty("prompté", b"quux\xe9", "utf-8")
def test_input_tty_non_ascii_unicode_errors(self):
# Check stdin/stdout error handler is used when invoking GNU readline
self.check_input_tty("prompté", b"quux\xe9", "ascii")
def test_repr(self):
self.assertEqual(repr(''), '\'\'')
self.assertEqual(repr(0), '0')
self.assertEqual(repr(()), '()')
self.assertEqual(repr([]), '[]')
self.assertEqual(repr({}), '{}')
a = []
a.append(a)
self.assertEqual(repr(a), '[[...]]')
a = {}
a[0] = a
self.assertEqual(repr(a), '{0: {...}}')
def test_round(self):
self.assertEqual(round(0.0), 0.0)
self.assertEqual(type(round(0.0)), int)
self.assertEqual(round(1.0), 1.0)
self.assertEqual(round(10.0), 10.0)
self.assertEqual(round(1000000000.0), 1000000000.0)
self.assertEqual(round(1e20), 1e20)
self.assertEqual(round(-1.0), -1.0)
self.assertEqual(round(-10.0), -10.0)
self.assertEqual(round(-1000000000.0), -1000000000.0)
self.assertEqual(round(-1e20), -1e20)
self.assertEqual(round(0.1), 0.0)
self.assertEqual(round(1.1), 1.0)
self.assertEqual(round(10.1), 10.0)
self.assertEqual(round(1000000000.1), 1000000000.0)
self.assertEqual(round(-1.1), -1.0)
self.assertEqual(round(-10.1), -10.0)
self.assertEqual(round(-1000000000.1), -1000000000.0)
self.assertEqual(round(0.9), 1.0)
self.assertEqual(round(9.9), 10.0)
self.assertEqual(round(999999999.9), 1000000000.0)
self.assertEqual(round(-0.9), -1.0)
self.assertEqual(round(-9.9), -10.0)
self.assertEqual(round(-999999999.9), -1000000000.0)
self.assertEqual(round(-8.0, -1), -10.0)
self.assertEqual(type(round(-8.0, -1)), float)
self.assertEqual(type(round(-8.0, 0)), float)
self.assertEqual(type(round(-8.0, 1)), float)
# Check even / odd rounding behaviour
self.assertEqual(round(5.5), 6)
self.assertEqual(round(6.5), 6)
self.assertEqual(round(-5.5), -6)
self.assertEqual(round(-6.5), -6)
# Check behavior on ints
self.assertEqual(round(0), 0)
self.assertEqual(round(8), 8)
self.assertEqual(round(-8), -8)
self.assertEqual(type(round(0)), int)
self.assertEqual(type(round(-8, -1)), int)
self.assertEqual(type(round(-8, 0)), int)
self.assertEqual(type(round(-8, 1)), int)
# test new kwargs
self.assertEqual(round(number=-8.0, ndigits=-1), -10.0)
self.assertRaises(TypeError, round)
# test generic rounding delegation for reals
class TestRound:
def __round__(self):
return 23
class TestNoRound:
pass
self.assertEqual(round(TestRound()), 23)
self.assertRaises(TypeError, round, 1, 2, 3)
self.assertRaises(TypeError, round, TestNoRound())
t = TestNoRound()
t.__round__ = lambda *args: args
self.assertRaises(TypeError, round, t)
self.assertRaises(TypeError, round, t, 0)
# Some versions of glibc for alpha have a bug that affects
# float -> integer rounding (floor, ceil, rint, round) for
# values in the range [2**52, 2**53). See:
#
# http://sources.redhat.com/bugzilla/show_bug.cgi?id=5350
#
# We skip this test on Linux/alpha if it would fail.
linux_alpha = (platform.system().startswith('Linux') and
platform.machine().startswith('alpha'))
system_round_bug = round(5e15+1) != 5e15+1
@unittest.skipIf(linux_alpha and system_round_bug,
"test will fail; failure is probably due to a "
"buggy system round function")
def test_round_large(self):
# Issue #1869: integral floats should remain unchanged
self.assertEqual(round(5e15-1), 5e15-1)
self.assertEqual(round(5e15), 5e15)
self.assertEqual(round(5e15+1), 5e15+1)
self.assertEqual(round(5e15+2), 5e15+2)
self.assertEqual(round(5e15+3), 5e15+3)
def test_setattr(self):
setattr(sys, 'spam', 1)
self.assertEqual(sys.spam, 1)
self.assertRaises(TypeError, setattr, sys, 1, 'spam')
self.assertRaises(TypeError, setattr)
def test_sum(self):
self.assertEqual(sum([]), 0)
self.assertEqual(sum(list(range(2,8))), 27)
self.assertEqual(sum(iter(list(range(2,8)))), 27)
self.assertEqual(sum(Squares(10)), 285)
self.assertEqual(sum(iter(Squares(10))), 285)
self.assertEqual(sum([[1], [2], [3]], []), [1, 2, 3])
self.assertRaises(TypeError, sum)
self.assertRaises(TypeError, sum, 42)
self.assertRaises(TypeError, sum, ['a', 'b', 'c'])
self.assertRaises(TypeError, sum, ['a', 'b', 'c'], '')
self.assertRaises(TypeError, sum, [[1], [2], [3]])
self.assertRaises(TypeError, sum, [{2:3}])
self.assertRaises(TypeError, sum, [{2:3}]*2, {2:3})
class BadSeq:
def __getitem__(self, index):
raise ValueError
self.assertRaises(ValueError, sum, BadSeq())
empty = []
sum(([x] for x in range(10)), empty)
self.assertEqual(empty, [])
def test_type(self):
self.assertEqual(type(''), type('123'))
self.assertNotEqual(type(''), type(()))
# We don't want self in vars(), so these are static methods
@staticmethod
def get_vars_f0():
return vars()
@staticmethod
def get_vars_f2():
BuiltinTest.get_vars_f0()
a = 1
b = 2
return vars()
class C_get_vars(object):
def getDict(self):
return {'a':2}
__dict__ = property(fget=getDict)
def test_vars(self):
self.assertEqual(set(vars()), set(dir()))
self.assertEqual(set(vars(sys)), set(dir(sys)))
self.assertEqual(self.get_vars_f0(), {})
self.assertEqual(self.get_vars_f2(), {'a': 1, 'b': 2})
self.assertRaises(TypeError, vars, 42, 42)
self.assertRaises(TypeError, vars, 42)
self.assertEqual(vars(self.C_get_vars()), {'a':2})
def test_zip(self):
a = (1, 2, 3)
b = (4, 5, 6)
t = [(1, 4), (2, 5), (3, 6)]
self.assertEqual(list(zip(a, b)), t)
b = [4, 5, 6]
self.assertEqual(list(zip(a, b)), t)
b = (4, 5, 6, 7)
self.assertEqual(list(zip(a, b)), t)
class I:
def __getitem__(self, i):
if i < 0 or i > 2: raise IndexError
return i + 4
self.assertEqual(list(zip(a, I())), t)
self.assertEqual(list(zip()), [])
self.assertEqual(list(zip(*[])), [])
self.assertRaises(TypeError, zip, None)
class G:
pass
self.assertRaises(TypeError, zip, a, G())
self.assertRaises(RuntimeError, zip, a, TestFailingIter())
# Make sure zip doesn't try to allocate a billion elements for the
# result list when one of its arguments doesn't say how long it is.
# A MemoryError is the most likely failure mode.
class SequenceWithoutALength:
def __getitem__(self, i):
if i == 5:
raise IndexError
else:
return i
self.assertEqual(
list(zip(SequenceWithoutALength(), range(2**30))),
list(enumerate(range(5)))
)
class BadSeq:
def __getitem__(self, i):
if i == 5:
raise ValueError
else:
return i
self.assertRaises(ValueError, list, zip(BadSeq(), BadSeq()))
def test_format(self):
# Test the basic machinery of the format() builtin. Don't test
# the specifics of the various formatters
self.assertEqual(format(3, ''), '3')
# Returns some classes to use for various tests. There's
# an old-style version, and a new-style version
def classes_new():
class A(object):
def __init__(self, x):
self.x = x
def __format__(self, format_spec):
return str(self.x) + format_spec
class DerivedFromA(A):
pass
class Simple(object): pass
class DerivedFromSimple(Simple):
def __init__(self, x):
self.x = x
def __format__(self, format_spec):
return str(self.x) + format_spec
class DerivedFromSimple2(DerivedFromSimple): pass
return A, DerivedFromA, DerivedFromSimple, DerivedFromSimple2
def class_test(A, DerivedFromA, DerivedFromSimple, DerivedFromSimple2):
self.assertEqual(format(A(3), 'spec'), '3spec')
self.assertEqual(format(DerivedFromA(4), 'spec'), '4spec')
self.assertEqual(format(DerivedFromSimple(5), 'abc'), '5abc')
self.assertEqual(format(DerivedFromSimple2(10), 'abcdef'),
'10abcdef')
class_test(*classes_new())
def empty_format_spec(value):
# test that:
# format(x, '') == str(x)
# format(x) == str(x)
self.assertEqual(format(value, ""), str(value))
self.assertEqual(format(value), str(value))
# for builtin types, format(x, "") == str(x)
empty_format_spec(17**13)
empty_format_spec(1.0)
empty_format_spec(3.1415e104)
empty_format_spec(-3.1415e104)
empty_format_spec(3.1415e-104)
empty_format_spec(-3.1415e-104)
empty_format_spec(object)
empty_format_spec(None)
# TypeError because self.__format__ returns the wrong type
class BadFormatResult:
def __format__(self, format_spec):
return 1.0
self.assertRaises(TypeError, format, BadFormatResult(), "")
# TypeError because format_spec is not unicode or str
self.assertRaises(TypeError, format, object(), 4)
self.assertRaises(TypeError, format, object(), object())
# tests for object.__format__ really belong elsewhere, but
# there's no good place to put them
x = object().__format__('')
self.assertTrue(x.startswith('<object object at'))
# first argument to object.__format__ must be string
self.assertRaises(TypeError, object().__format__, 3)
self.assertRaises(TypeError, object().__format__, object())
self.assertRaises(TypeError, object().__format__, None)
# --------------------------------------------------------------------
# Issue #7994: object.__format__ with a non-empty format string is
# pending deprecated
def test_deprecated_format_string(obj, fmt_str, should_raise_warning):
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always", PendingDeprecationWarning)
format(obj, fmt_str)
if should_raise_warning:
self.assertEqual(len(w), 1)
self.assertIsInstance(w[0].message, PendingDeprecationWarning)
self.assertIn('object.__format__ with a non-empty format '
'string', str(w[0].message))
else:
self.assertEqual(len(w), 0)
fmt_strs = ['', 's']
class A:
def __format__(self, fmt_str):
return format('', fmt_str)
for fmt_str in fmt_strs:
test_deprecated_format_string(A(), fmt_str, False)
class B:
pass
class C(object):
pass
for cls in [object, B, C]:
for fmt_str in fmt_strs:
test_deprecated_format_string(cls(), fmt_str, len(fmt_str) != 0)
# --------------------------------------------------------------------
# make sure we can take a subclass of str as a format spec
class DerivedFromStr(str): pass
self.assertEqual(format(0, DerivedFromStr('10')), ' 0')
def test_bin(self):
self.assertEqual(bin(0), '0b0')
self.assertEqual(bin(1), '0b1')
self.assertEqual(bin(-1), '-0b1')
self.assertEqual(bin(2**65), '0b1' + '0' * 65)
self.assertEqual(bin(2**65-1), '0b' + '1' * 65)
self.assertEqual(bin(-(2**65)), '-0b1' + '0' * 65)
self.assertEqual(bin(-(2**65-1)), '-0b' + '1' * 65)
def test_bytearray_translate(self):
x = bytearray(b"abc")
self.assertRaises(ValueError, x.translate, b"1", 1)
self.assertRaises(TypeError, x.translate, b"1"*256, 1)
class TestSorted(unittest.TestCase):
def test_basic(self):
data = list(range(100))
copy = data[:]
random.shuffle(copy)
self.assertEqual(data, sorted(copy))
self.assertNotEqual(data, copy)
data.reverse()
random.shuffle(copy)
self.assertEqual(data, sorted(copy, key=lambda x: -x))
self.assertNotEqual(data, copy)
random.shuffle(copy)
self.assertEqual(data, sorted(copy, reverse=1))
self.assertNotEqual(data, copy)
def test_inputtypes(self):
s = 'abracadabra'
types = [list, tuple, str]
for T in types:
self.assertEqual(sorted(s), sorted(T(s)))
s = ''.join(set(s)) # unique letters only
types = [str, set, frozenset, list, tuple, dict.fromkeys]
for T in types:
self.assertEqual(sorted(s), sorted(T(s)))
def test_baddecorator(self):
data = 'The quick Brown fox Jumped over The lazy Dog'.split()
self.assertRaises(TypeError, sorted, data, None, lambda x,y: 0)
def test_main(verbose=None):
test_classes = (BuiltinTest, TestSorted)
run_unittest(*test_classes)
# verify reference counting
if verbose and hasattr(sys, "gettotalrefcount"):
import gc
counts = [None] * 5
for i in range(len(counts)):
run_unittest(*test_classes)
gc.collect()
counts[i] = sys.gettotalrefcount()
print(counts)
if __name__ == "__main__":
test_main(verbose=True)
Reference in New Issue View Git Blame Copy Permalink