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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.
# Python test set -- built-in functions
import platform
import unittest
import warnings
from test.test_support import (fcmp, have_unicode, TESTFN, unlink,
run_unittest, check_py3k_warnings, check_warnings,
is_jython)
from operator import neg
import sys, cStringIO, random, UserDict
# count the number of test runs.
# used to skip running test_execfile() multiple times
# and to create unique strings to intern in test_intern()
numruns = 0
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
class TestFailingBool:
def __nonzero__(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.maxint-1) > 0)
# float
self.assertEqual(abs(0.0), 0.0)
self.assertEqual(abs(3.14), 3.14)
self.assertEqual(abs(-3.14), 3.14)
# long
self.assertEqual(abs(0L), 0L)
self.assertEqual(abs(1234L), 1234L)
self.assertEqual(abs(-1234L), 1234L)
# str
self.assertRaises(TypeError, abs, 'a')
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_neg(self):
x = -sys.maxint-1
self.assert_(isinstance(x, int))
self.assertEqual(-x, sys.maxint+1)
def test_apply(self):
def f0(*args):
self.assertEqual(args, ())
def f1(a1):
self.assertEqual(a1, 1)
def f2(a1, a2):
self.assertEqual(a1, 1)
self.assertEqual(a2, 2)
def f3(a1, a2, a3):
self.assertEqual(a1, 1)
self.assertEqual(a2, 2)
self.assertEqual(a3, 3)
apply(f0, ())
apply(f1, (1,))
apply(f2, (1, 2))
apply(f3, (1, 2, 3))
# A PyCFunction that takes only positional parameters should allow an
# empty keyword dictionary to pass without a complaint, but raise a
# TypeError if the dictionary is non-empty.
apply(id, (1,), {})
self.assertRaises(TypeError, apply, id, (1,), {"foo": 1})
self.assertRaises(TypeError, apply)
self.assertRaises(TypeError, apply, id, 42)
self.assertRaises(TypeError, apply, id, (42,), 42)
def test_callable(self):
self.assert_(callable(len))
def f(): pass
self.assert_(callable(f))
class C:
def meth(self): pass
self.assert_(callable(C))
x = C()
self.assert_(callable(x.meth))
self.assert_(not callable(x))
class D(C):
def __call__(self): pass
y = D()
self.assert_(callable(y))
y()
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, 256)
self.assertRaises(TypeError, chr)
def test_cmp(self):
self.assertEqual(cmp(-1, 1), -1)
self.assertEqual(cmp(1, -1), 1)
self.assertEqual(cmp(1, 1), 0)
# verify that circular objects are handled for Jython
a = []; a.append(a)
b = []; b.append(b)
from UserList import UserList
c = UserList(); c.append(c)
self.assertEqual(cmp(a, b), 0)
self.assertEqual(cmp(b, c), 0)
self.assertEqual(cmp(c, a), 0)
self.assertEqual(cmp(a, c), 0)
# okay, now break the cycles
a.pop(); b.pop(); c.pop()
self.assertRaises(TypeError, cmp)
def test_coerce(self):
self.assert_(not fcmp(coerce(1, 1.1), (1.0, 1.1)))
self.assertEqual(coerce(1, 1L), (1L, 1L))
self.assert_(not fcmp(coerce(1L, 1.1), (1.0, 1.1)))
self.assertRaises(TypeError, coerce)
class BadNumber:
def __coerce__(self, other):
raise ValueError
self.assertRaises(ValueError, coerce, 42, BadNumber())
self.assertRaises(OverflowError, coerce, 0.5, int("12345" * 1000))
def test_compile(self):
compile('print 1\n', '', 'exec')
bom = '\xef\xbb\xbf'
compile(bom + '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')
self.assertRaises(TypeError, compile)
self.assertRaises(ValueError, compile, 'print 42\n', '', 'badmode')
self.assertRaises(ValueError, compile, 'print 42\n', '', 'single', 0xff)
self.assertRaises(TypeError, compile, chr(0), 'f', 'exec')
self.assertRaises(TypeError, compile, 'pass', '?', 'exec',
mode='eval', source='0', filename='tmp')
if have_unicode:
compile(unicode('print u"\xc3\xa5"\n', 'utf8'), '', 'exec')
self.assertRaises(TypeError, compile, unichr(0), 'f', 'exec')
self.assertRaises(ValueError, compile, unicode('a = 1'), 'f', 'bad')
def test_delattr(self):
import sys
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.assert_('local_var' in dir())
# dir(module)
import sys
self.assert_('exit' in dir(sys))
# dir(module_with_invalid__dict__)
import types
class Foo(types.ModuleType):
__dict__ = 8
f = Foo("foo")
if not is_jython: #FIXME #1861
self.assertRaises(TypeError, dir, f)
# dir(type)
self.assert_("strip" in dir(str))
self.assert_("__mro__" not in dir(str))
# dir(obj)
class Foo(object):
def __init__(self):
self.x = 7
self.y = 8
self.z = 9
f = Foo()
self.assert_("y" in dir(f))
# dir(obj_no__dict__)
class Foo(object):
__slots__ = []
f = Foo()
self.assert_("__repr__" in 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.assert_("__repr__" not in dir(f))
self.assert_("bar" in dir(f))
# dir(obj_using __dir__)
class Foo(object):
def __dir__(self):
return ["kan", "ga", "roo"]
f = Foo()
if not is_jython: #FIXME #1861
self.assert_(dir(f) == ["ga", "kan", "roo"])
# dir(obj__dir__not_list)
class Foo(object):
def __dir__(self):
return 7
f = Foo()
if not is_jython: #FIXME #1861
self.assertRaises(TypeError, dir, f)
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(12L, 7L), (1L, 5L))
self.assertEqual(divmod(-12L, 7L), (-2L, 2L))
self.assertEqual(divmod(12L, -7L), (-2L, -2L))
self.assertEqual(divmod(-12L, -7L), (1L, -5L))
self.assertEqual(divmod(12, 7L), (1, 5L))
self.assertEqual(divmod(-12, 7L), (-2, 2L))
self.assertEqual(divmod(12L, -7), (-2L, -2))
self.assertEqual(divmod(-12L, -7), (1L, -5))
self.assertEqual(divmod(-sys.maxint-1, -1),
(sys.maxint+1, 0))
self.assert_(not fcmp(divmod(3.25, 1.0), (3.0, 0.25)))
self.assert_(not fcmp(divmod(-3.25, 1.0), (-4.0, 0.75)))
self.assert_(not fcmp(divmod(3.25, -1.0), (-4.0, -0.75)))
self.assert_(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)
if have_unicode:
self.assertEqual(eval(unicode('1+1')), 2)
self.assertEqual(eval(unicode(' 1+1\n')), 2)
globals = {'a': 1, 'b': 2}
locals = {'b': 200, 'c': 300}
if have_unicode:
self.assertEqual(eval(unicode('a'), globals), 1)
self.assertEqual(eval(unicode('a'), globals, locals), 1)
self.assertEqual(eval(unicode('b'), globals, locals), 200)
self.assertEqual(eval(unicode('c'), globals, locals), 300)
bom = '\xef\xbb\xbf'
self.assertEqual(eval(bom + 'a', globals, locals), 1)
self.assertEqual(eval(unicode('u"\xc3\xa5"', 'utf8'), globals),
unicode('\xc3\xa5', 'utf8'))
self.assertRaises(TypeError, eval)
self.assertRaises(TypeError, eval, ())
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'))
if not is_jython: #FIXME #1861
self.assertEqual(eval('globals()', g, m), g)
self.assertEqual(eval('locals()', g, m), m)
# Jython allows arbitrary mappings for globals
self.assertEqual(eval('a', m), 12)
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'))
if not is_jython: #FIXME #1861
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, UserDict.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 'a'
self.assertRaises(TypeError, eval, 'dir()', globals(), C())
# Done outside of the method test_z to get the correct scope
z = 0
f = open(TESTFN, 'w')
f.write('z = z+1\n')
f.write('z = z*2\n')
f.close()
with check_py3k_warnings(("execfile.. not supported in 3.x",
DeprecationWarning)):
execfile(TESTFN)
def test_execfile(self):
global numruns
if numruns:
return
numruns += 1
globals = {'a': 1, 'b': 2}
locals = {'b': 200, 'c': 300}
self.assertEqual(self.__class__.z, 2)
globals['z'] = 0
execfile(TESTFN, globals)
self.assertEqual(globals['z'], 2)
locals['z'] = 0
execfile(TESTFN, globals, locals)
self.assertEqual(locals['z'], 2)
class M:
"Test mapping interface versus possible calls from execfile()."
def __init__(self):
self.z = 10
def __getitem__(self, key):
if key == 'z':
return self.z
raise KeyError
def __setitem__(self, key, value):
if key == 'z':
self.z = value
return
raise KeyError
locals = M()
locals['z'] = 0
execfile(TESTFN, globals, locals)
self.assertEqual(locals['z'], 2)
unlink(TESTFN)
self.assertRaises(TypeError, execfile)
self.assertRaises(TypeError, execfile, TESTFN, {}, ())
import os
self.assertRaises(IOError, execfile, os.curdir)
self.assertRaises(IOError, execfile, "I_dont_exist")
def test_filter(self):
self.assertEqual(filter(lambda c: 'a' <= c <= 'z', 'Hello World'), 'elloorld')
self.assertEqual(filter(None, [1, 'hello', [], [3], '', None, 9, 0]), [1, 'hello', [3], 9])
self.assertEqual(filter(lambda x: x > 0, [1, -3, 9, 0, 2]), [1, 9, 2])
self.assertEqual(filter(None, Squares(10)), [1, 4, 9, 16, 25, 36, 49, 64, 81])
self.assertEqual(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, filter, lambda x: x, BadSeq())
def badfunc():
pass
self.assertRaises(TypeError, filter, badfunc, range(5))
# test bltinmodule.c::filtertuple()
self.assertEqual(filter(None, (1, 2)), (1, 2))
self.assertEqual(filter(lambda x: x>=3, (1, 2, 3, 4)), (3, 4))
self.assertRaises(TypeError, filter, 42, (1, 2))
# test bltinmodule.c::filterstring()
self.assertEqual(filter(None, "12"), "12")
self.assertEqual(filter(lambda x: x>="3", "1234"), "34")
self.assertRaises(TypeError, filter, 42, "12")
class badstr(str):
def __getitem__(self, index):
raise ValueError
self.assertRaises(ValueError, filter, lambda x: x >="3", badstr("1234"))
class badstr2(str):
def __getitem__(self, index):
return 42
self.assertRaises(TypeError, filter, lambda x: x >=42, badstr2("1234"))
class weirdstr(str):
def __getitem__(self, index):
return weirdstr(2*str.__getitem__(self, index))
self.assertEqual(filter(lambda x: x>="33", weirdstr("1234")), "3344")
class shiftstr(str):
def __getitem__(self, index):
return chr(ord(str.__getitem__(self, index))+1)
self.assertEqual(filter(lambda x: x>="3", shiftstr("1234")), "345")
if have_unicode:
# test bltinmodule.c::filterunicode()
self.assertEqual(filter(None, unicode("12")), unicode("12"))
self.assertEqual(filter(lambda x: x>="3", unicode("1234")), unicode("34"))
self.assertRaises(TypeError, filter, 42, unicode("12"))
self.assertRaises(ValueError, filter, lambda x: x >="3", badstr(unicode("1234")))
class badunicode(unicode):
def __getitem__(self, index):
return 42
self.assertRaises(TypeError, filter, lambda x: x >=42, badunicode("1234"))
class weirdunicode(unicode):
def __getitem__(self, index):
return weirdunicode(2*unicode.__getitem__(self, index))
self.assertEqual(
filter(lambda x: x>=unicode("33"), weirdunicode("1234")), unicode("3344"))
class shiftunicode(unicode):
def __getitem__(self, index):
return unichr(ord(unicode.__getitem__(self, index))+1)
self.assertEqual(
filter(lambda x: x>=unicode("3"), shiftunicode("1234")),
unicode("345")
)
def test_filter_subclasses(self):
# test that filter() never returns tuple, str or unicode subclasses
# and that the result always goes through __getitem__
funcs = (None, bool, lambda x: True)
class tuple2(tuple):
def __getitem__(self, index):
return 2*tuple.__getitem__(self, index)
class str2(str):
def __getitem__(self, index):
return 2*str.__getitem__(self, index)
inputs = {
tuple2: {(): (), (1, 2, 3): (2, 4, 6)},
str2: {"": "", "123": "112233"}
}
if have_unicode:
class unicode2(unicode):
def __getitem__(self, index):
return 2*unicode.__getitem__(self, index)
inputs[unicode2] = {
unicode(): unicode(),
unicode("123"): unicode("112233")
}
for (cls, inps) in inputs.iteritems():
for (inp, exp) in inps.iteritems():
# make sure the output goes through __getitem__
# even if func is None
self.assertEqual(
filter(funcs[0], cls(inp)),
filter(funcs[1], cls(inp))
)
for func in funcs:
outp = filter(func, cls(inp))
self.assertEqual(outp, exp)
self.assert_(not isinstance(outp, cls))
def test_getattr(self):
import sys
self.assert_(getattr(sys, 'stdout') is sys.stdout)
self.assertRaises(TypeError, getattr, sys, 1)
self.assertRaises(TypeError, getattr, sys, 1, "foo")
self.assertRaises(TypeError, getattr)
if have_unicode:
self.assertRaises(UnicodeError, getattr, sys, unichr(sys.maxunicode))
def test_hasattr(self):
import sys
self.assert_(hasattr(sys, 'stdout'))
self.assertRaises(TypeError, hasattr, sys, 1)
self.assertRaises(TypeError, hasattr)
if have_unicode:
self.assertRaises(UnicodeError, hasattr, sys, unichr(sys.maxunicode))
# Check that hasattr allows SystemExit and KeyboardInterrupts by
class A:
def __getattr__(self, what):
raise KeyboardInterrupt
self.assertRaises(KeyboardInterrupt, hasattr, A(), "b")
class B:
def __getattr__(self, what):
raise SystemExit
self.assertRaises(SystemExit, hasattr, B(), "b")
def test_hash(self):
hash(None)
self.assertEqual(hash(1), hash(1L))
self.assertEqual(hash(1), hash(1.0))
hash('spam')
if have_unicode:
self.assertEqual(hash('spam'), hash(unicode('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.assertEquals(type(hash(X())), int)
class Y(object):
def __hash__(self):
return 2**100
self.assertEquals(type(hash(Y())), int)
class Z(long):
def __hash__(self):
return self
self.assertEquals(hash(Z(42)), hash(42L))
def test_hex(self):
self.assertEqual(hex(16), '0x10')
self.assertEqual(hex(16L), '0x10L')
self.assertEqual(hex(-16), '-0x10')
self.assertEqual(hex(-16L), '-0x10L')
self.assertRaises(TypeError, hex, {})
def test_id(self):
id(None)
id(1)
id(1L)
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, together with raw_input
def test_intern(self):
self.assertRaises(TypeError, intern)
# This fails if the test is run twice with a constant string,
# therefore append the run counter
s = "never interned before " + str(numruns)
self.assert_(intern(s) is s)
s2 = s.swapcase().swapcase()
self.assert_(intern(s2) is s)
# Subclasses of string can't be interned, because they
# provide too much opportunity for insane things to happen.
# We don't want them in the interned dict and if they aren't
# actually interned, we don't want to create the appearance
# that they are by allowing intern() to succeeed.
class S(str):
def __hash__(self):
return 123
self.assertRaises(TypeError, intern, S("abc"))
# It's still safe to pass these strings to routines that
# call intern internally, e.g. PyObject_SetAttr().
s = S("abc")
setattr(s, s, s)
self.assertEqual(getattr(s, s), s)
def test_iter(self):
self.assertRaises(TypeError, iter)
self.assertRaises(TypeError, iter, 42, 42)
lists = [("1", "2"), ["1", "2"], "12"]
if have_unicode:
lists.append(unicode("12"))
for l in lists:
i = iter(l)
self.assertEqual(i.next(), '1')
self.assertEqual(i.next(), '2')
self.assertRaises(StopIteration, i.next)
def test_isinstance(self):
class C:
pass
class D(C):
pass
class E:
pass
c = C()
d = D()
e = E()
self.assert_(isinstance(c, C))
self.assert_(isinstance(d, C))
self.assert_(not isinstance(e, C))
self.assert_(not isinstance(c, D))
self.assert_(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.assert_(issubclass(D, C))
self.assert_(issubclass(C, C))
self.assert_(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())
def test_map(self):
self.assertEqual(
map(None, 'hello world'),
['h','e','l','l','o',' ','w','o','r','l','d']
)
self.assertEqual(
map(None, 'abcd', 'efg'),
[('a', 'e'), ('b', 'f'), ('c', 'g'), ('d', None)]
)
self.assertEqual(
map(None, range(10)),
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
)
self.assertEqual(
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(
map(lambda x: map(sqrt,x), [[16, 4], [81, 9]]),
[[4.0, 2.0], [9.0, 3.0]]
)
self.assertEqual(
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(
map(plus, [1, 3, 7]),
[1, 3, 7]
)
self.assertEqual(
map(plus, [1, 3, 7], [4, 9, 2]),
[1+4, 3+9, 7+2]
)
self.assertEqual(
map(plus, [1, 3, 7], [4, 9, 2], [1, 1, 0]),
[1+4+1, 3+9+1, 7+2+0]
)
self.assertEqual(
map(None, Squares(10)),
[0, 1, 4, 9, 16, 25, 36, 49, 64, 81]
)
self.assertEqual(
map(int, Squares(10)),
[0, 1, 4, 9, 16, 25, 36, 49, 64, 81]
)
self.assertEqual(
map(None, Squares(3), Squares(2)),
[(0,0), (1,1), (4,None)]
)
self.assertEqual(
map(max, Squares(3), Squares(2)),
[0, 1, 4]
)
self.assertRaises(TypeError, map)
self.assertRaises(TypeError, map, lambda x: x, 42)
self.assertEqual(map(None, [42]), [42])
class BadSeq:
def __getitem__(self, index):
raise ValueError
self.assertRaises(ValueError, map, lambda x: x, BadSeq())
def badfunc(x):
raise RuntimeError
self.assertRaises(RuntimeError, 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, 2L, 3.0), 3.0)
self.assertEqual(max(1L, 2.0, 3), 3)
self.assertEqual(max(1.0, 2, 3L), 3L)
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) in 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, 2L, 3.0), 1)
self.assertEqual(min(1L, 2.0, 3), 1L)
self.assertEqual(min(1.0, 2, 3L), 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())
class BadNumber:
def __cmp__(self, other):
raise ValueError
self.assertRaises(ValueError, min, (42, BadNumber()))
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) in 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.assertEquals(next(it, 42), 42)
class Iter(object):
def __iter__(self):
return self
def next(self):
raise StopIteration
it = iter(Iter())
self.assertEquals(next(it, 42), 42)
self.assertRaises(StopIteration, next, it)
def gen():
yield 1
return
it = gen()
self.assertEquals(next(it), 1)
self.assertRaises(StopIteration, next, it)
self.assertEquals(next(it, 42), 42)
def test_oct(self):
self.assertEqual(oct(100), '0144')
self.assertEqual(oct(100L), '0144L')
self.assertEqual(oct(-100), '-0144')
self.assertEqual(oct(-100L), '-0144L')
self.assertRaises(TypeError, oct, ())
def write_testfile(self):
# NB the first 4 lines are also used to test input and raw_input, below
fp = open(TESTFN, 'w')
try:
fp.write('1+1\n')
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(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)
if have_unicode:
self.assertEqual(ord(unichr(sys.maxunicode)), sys.maxunicode)
self.assertRaises(TypeError, ord, 42)
if have_unicode:
self.assertRaises(TypeError, ord, unicode("12"))
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.assertEqual(pow(0L,0), 1)
self.assertEqual(pow(0L,1), 0)
self.assertEqual(pow(1L,0), 1)
self.assertEqual(pow(1L,1), 1)
self.assertEqual(pow(2L,0), 1)
self.assertEqual(pow(2L,10), 1024)
self.assertEqual(pow(2L,20), 1024*1024)
self.assertEqual(pow(2L,30), 1024*1024*1024)
self.assertEqual(pow(-2L,0), 1)
self.assertEqual(pow(-2L,1), -2)
self.assertEqual(pow(-2L,2), 4)
self.assertEqual(pow(-2L,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, 2L, 2.0:
for y in 10, 10L, 10.0:
for z in 1000, 1000L, 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.assertRaises(TypeError, pow, -1, -2, 3)
self.assertRaises(ValueError, pow, 1, 2, 0)
self.assertRaises(TypeError, pow, -1L, -2L, 3L)
self.assertRaises(ValueError, pow, 1L, 2L, 0L)
# Will return complex in 3.0:
self.assertRaises(ValueError, pow, -342.43, 0.234)
self.assertRaises(TypeError, pow)
def test_range(self):
self.assertEqual(range(3), [0, 1, 2])
self.assertEqual(range(1, 5), [1, 2, 3, 4])
self.assertEqual(range(0), [])
self.assertEqual(range(-3), [])
self.assertEqual(range(1, 10, 3), [1, 4, 7])
self.assertEqual(range(5, -5, -3), [5, 2, -1, -4])
# Now test range() with longs
self.assertEqual(range(-2**100), [])
self.assertEqual(range(0, -2**100), [])
self.assertEqual(range(0, 2**100, -1), [])
self.assertEqual(range(0, 2**100, -1), [])
a = long(10 * sys.maxint)
b = long(100 * sys.maxint)
c = long(50 * sys.maxint)
self.assertEqual(range(a, a+2), [a, a+1])
self.assertEqual(range(a+2, a, -1L), [a+2, a+1])
self.assertEqual(range(a+4, a, -2), [a+4, a+2])
seq = range(a, b, c)
self.assert_(a in seq)
self.assert_(b not in seq)
self.assertEqual(len(seq), 2)
seq = range(b, a, -c)
self.assert_(b in seq)
self.assert_(a not in seq)
self.assertEqual(len(seq), 2)
seq = range(-a, -b, -c)
self.assert_(-a in seq)
self.assert_(-b not in seq)
self.assertEqual(len(seq), 2)
self.assertRaises(TypeError, range)
self.assertRaises(TypeError, range, 1, 2, 3, 4)
self.assertRaises(ValueError, range, 1, 2, 0)
self.assertRaises(ValueError, range, a, a + 1, long(0))
class badzero(int):
def __cmp__(self, other):
raise RuntimeError
__hash__ = None # Invalid cmp makes this unhashable
self.assertRaises(RuntimeError, range, a, a + 1, badzero(1))
# Reject floats when it would require PyLongs to represent.
# (smaller floats still accepted, but deprecated)
with check_warnings() as w:
warnings.simplefilter("always")
self.assertRaises(TypeError, range, 1e100, 1e101, 1e101)
with check_warnings() as w:
warnings.simplefilter("always")
self.assertEqual(range(1.0), [0])
self.assertRaises(TypeError, range, 0, "spam")
self.assertRaises(TypeError, range, 0, 42, "spam")
self.assertRaises(OverflowError, range, -sys.maxint, sys.maxint)
self.assertRaises(OverflowError, range, 0, 2*sys.maxint)
bignum = 2*sys.maxint
smallnum = 42
# Old-style user-defined class with __int__ method
class I0:
def __init__(self, n):
self.n = int(n)
def __int__(self):
return self.n
self.assertEqual(range(I0(bignum), I0(bignum + 1)), [bignum])
self.assertEqual(range(I0(smallnum), I0(smallnum + 1)), [smallnum])
# New-style user-defined class with __int__ method
class I1(object):
def __init__(self, n):
self.n = int(n)
def __int__(self):
return self.n
self.assertEqual(range(I1(bignum), I1(bignum + 1)), [bignum])
self.assertEqual(range(I1(smallnum), I1(smallnum + 1)), [smallnum])
# New-style user-defined class with failing __int__ method
class IX(object):
def __int__(self):
raise RuntimeError
self.assertRaises(RuntimeError, range, IX())
# New-style user-defined class with invalid __int__ method
class IN(object):
def __int__(self):
return "not a number"
self.assertRaises(TypeError, range, IN())
# Exercise various combinations of bad arguments, to check
# refcounting logic
with check_warnings():
self.assertRaises(TypeError, range, 1e100)
self.assertRaises(TypeError, range, 0, 1e100)
self.assertRaises(TypeError, range, 1e100, 0)
self.assertRaises(TypeError, range, 1e100, 1e100)
self.assertRaises(TypeError, range, 0, 0, 1e100)
self.assertRaises(TypeError, range, 0, 1e100, 1)
self.assertRaises(TypeError, range, 0, 1e100, 1e100)
self.assertRaises(TypeError, range, 1e100, 0, 1)
self.assertRaises(TypeError, range, 1e100, 0, 1e100)
self.assertRaises(TypeError, range, 1e100, 1e100, 1)
self.assertRaises(TypeError, range, 1e100, 1e100, 1e100)
@unittest.skipIf(is_jython, "FIXME #1861: not working in Jython")
def test_input_and_raw_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(), 2)
self.assertEqual(input('testing\n'), 2)
self.assertEqual(raw_input(), 'The quick brown fox jumps over the lazy dog.')
self.assertEqual(raw_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 = cStringIO.StringIO("NULL\0")
self.assertRaises(TypeError, input, 42, 42)
sys.stdin = cStringIO.StringIO(" 'whitespace'")
self.assertEqual(input(), 'whitespace')
sys.stdin = cStringIO.StringIO()
self.assertRaises(EOFError, input)
# SF 876178: make sure input() respect future options.
sys.stdin = cStringIO.StringIO('1/2')
sys.stdout = cStringIO.StringIO()
exec compile('print input()', 'test_builtin_tmp', 'exec')
sys.stdin.seek(0, 0)
exec compile('from __future__ import division;print input()',
'test_builtin_tmp', 'exec')
sys.stdin.seek(0, 0)
exec compile('print input()', 'test_builtin_tmp', 'exec')
# The result we expect depends on whether new division semantics
# are already in effect.
if 1/2 == 0:
# This test was compiled with old semantics.
expected = ['0', '0.5', '0']
else:
# This test was compiled with new semantics (e.g., -Qnew
# was given on the command line.
expected = ['0.5', '0.5', '0.5']
self.assertEqual(sys.stdout.getvalue().splitlines(), expected)
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)
def test_reduce(self):
self.assertEqual(reduce(lambda x, y: x+y, ['a', 'b', 'c'], ''), 'abc')
self.assertEqual(
reduce(lambda x, y: x+y, [['a', 'c'], [], ['d', 'w']], []),
['a','c','d','w']
)
self.assertEqual(reduce(lambda x, y: x*y, range(2,8), 1), 5040)
self.assertEqual(
reduce(lambda x, y: x*y, range(2,21), 1L),
2432902008176640000L
)
self.assertEqual(reduce(lambda x, y: x+y, Squares(10)), 285)
self.assertEqual(reduce(lambda x, y: x+y, Squares(10), 0), 285)
self.assertEqual(reduce(lambda x, y: x+y, Squares(0), 0), 0)
self.assertRaises(TypeError, reduce)
self.assertRaises(TypeError, reduce, 42, 42)
self.assertRaises(TypeError, reduce, 42, 42, 42)
self.assertEqual(reduce(42, "1"), "1") # func is never called with one item
self.assertEqual(reduce(42, "", "1"), "1") # func is never called with one item
self.assertRaises(TypeError, reduce, 42, (42, 42))
class BadSeq:
def __getitem__(self, index):
raise ValueError
self.assertRaises(ValueError, reduce, 42, BadSeq())
def test_reload(self):
import marshal
reload(marshal)
import string
reload(string)
## import sys
## self.assertRaises(ImportError, reload, sys)
def test_repr(self):
self.assertEqual(repr(''), '\'\'')
self.assertEqual(repr(0), '0')
self.assertEqual(repr(0L), '0L')
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)), float) # Will be int in 3.0.
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 half rounding behaviour.
self.assertEqual(round(5.5), 6)
self.assertEqual(round(6.5), 7)
self.assertEqual(round(-5.5), -6)
self.assertEqual(round(-6.5), -7)
# Check behavior on ints
self.assertEqual(round(0), 0)
self.assertEqual(round(8), 8)
self.assertEqual(round(-8), -8)
self.assertEqual(type(round(0)), float) # Will be int in 3.0.
self.assertEqual(type(round(-8, -1)), float)
self.assertEqual(type(round(-8, 0)), float)
self.assertEqual(type(round(-8, 1)), float)
# 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(object):
def __float__(self):
return 23.0
class TestNoRound(object):
pass
self.assertEqual(round(TestRound()), 23)
self.assertRaises(TypeError, round, 1, 2, 3)
self.assertRaises(TypeError, round, TestNoRound())
t = TestNoRound()
t.__float__ = lambda *args: args
self.assertRaises(TypeError, round, t)
self.assertRaises(TypeError, round, t, 0)
@unittest.skipIf(is_jython, "FIXME #1861: not working in Jython")
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(range(2,8)), 27)
self.assertEqual(sum(iter(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())
def test_type(self):
self.assertEqual(type(''), type('123'))
self.assertNotEqual(type(''), type(()))
def test_unichr(self):
if have_unicode:
self.assertEqual(unichr(32), unicode(' '))
self.assertEqual(unichr(65), unicode('A'))
self.assertEqual(unichr(97), unicode('a'))
self.assertEqual(
unichr(sys.maxunicode),
unicode('\\U%08x' % (sys.maxunicode), 'unicode-escape')
)
self.assertRaises(ValueError, unichr, sys.maxunicode+1)
self.assertRaises(TypeError, unichr)
if not is_jython: #FIXME #1861
self.assertRaises((OverflowError, ValueError), unichr, 2**32)
# 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()
@unittest.skipIf(is_jython, "FIXME #1861: not working in Jython")
def test_vars(self):
self.assertEqual(set(vars()), set(dir()))
import sys
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)
def test_zip(self):
a = (1, 2, 3)
b = (4, 5, 6)
t = [(1, 4), (2, 5), (3, 6)]
self.assertEqual(zip(a, b), t)
b = [4, 5, 6]
self.assertEqual(zip(a, b), t)
b = (4, 5, 6, 7)
self.assertEqual(zip(a, b), t)
class I:
def __getitem__(self, i):
if i < 0 or i > 2: raise IndexError
return i + 4
self.assertEqual(zip(a, I()), t)
self.assertEqual(zip(), [])
self.assertEqual(zip(*[]), [])
self.assertRaises(TypeError, zip, None)
class G:
pass
self.assertRaises(TypeError, zip, a, G())
# 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(
zip(SequenceWithoutALength(), xrange(2**30)),
list(enumerate(range(5)))
)
class BadSeq:
def __getitem__(self, i):
if i == 5:
raise ValueError
else:
return i
self.assertRaises(ValueError, 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
# In 3.0, classes_classic has the same meaning as classes_new
def classes_classic():
class A:
def __init__(self, x):
self.x = x
def __format__(self, format_spec):
return str(self.x) + format_spec
class DerivedFromA(A):
pass
class Simple: 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')
if not is_jython: #FIXME #1861 check again when __format__ works better.
class_test(*classes_new())
class_test(*classes_classic())
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
if not is_jython: #FIXME #1861 check again when __format__ works better.
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.assert_(x.startswith('