cpython/Lib/test/test_richcmp.py

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# Tests for rich comparisons
import unittest
from test import support
import operator
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class Number:
def __init__(self, x):
self.x = x
def __lt__(self, other):
return self.x < other
def __le__(self, other):
return self.x <= other
def __eq__(self, other):
return self.x == other
def __ne__(self, other):
return self.x != other
def __gt__(self, other):
return self.x > other
def __ge__(self, other):
return self.x >= other
def __cmp__(self, other):
raise support.TestFailed("Number.__cmp__() should not be called")
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def __repr__(self):
return "Number(%r)" % (self.x, )
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class Vector:
def __init__(self, data):
self.data = data
def __len__(self):
return len(self.data)
def __getitem__(self, i):
return self.data[i]
def __setitem__(self, i, v):
self.data[i] = v
__hash__ = None # Vectors cannot be hashed
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def __bool__(self):
raise TypeError("Vectors cannot be used in Boolean contexts")
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def __cmp__(self, other):
raise support.TestFailed("Vector.__cmp__() should not be called")
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def __repr__(self):
return "Vector(%r)" % (self.data, )
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def __lt__(self, other):
return Vector([a < b for a, b in zip(self.data, self.__cast(other))])
def __le__(self, other):
return Vector([a <= b for a, b in zip(self.data, self.__cast(other))])
def __eq__(self, other):
return Vector([a == b for a, b in zip(self.data, self.__cast(other))])
def __ne__(self, other):
return Vector([a != b for a, b in zip(self.data, self.__cast(other))])
def __gt__(self, other):
return Vector([a > b for a, b in zip(self.data, self.__cast(other))])
def __ge__(self, other):
return Vector([a >= b for a, b in zip(self.data, self.__cast(other))])
def __cast(self, other):
if isinstance(other, Vector):
other = other.data
if len(self.data) != len(other):
raise ValueError("Cannot compare vectors of different length")
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return other
opmap = {
"lt": (lambda a,b: a< b, operator.lt, operator.__lt__),
"le": (lambda a,b: a<=b, operator.le, operator.__le__),
"eq": (lambda a,b: a==b, operator.eq, operator.__eq__),
"ne": (lambda a,b: a!=b, operator.ne, operator.__ne__),
"gt": (lambda a,b: a> b, operator.gt, operator.__gt__),
"ge": (lambda a,b: a>=b, operator.ge, operator.__ge__)
}
class VectorTest(unittest.TestCase):
def checkfail(self, error, opname, *args):
for op in opmap[opname]:
self.assertRaises(error, op, *args)
def checkequal(self, opname, a, b, expres):
for op in opmap[opname]:
realres = op(a, b)
# can't use assertEqual(realres, expres) here
self.assertEqual(len(realres), len(expres))
Merged revisions 55007-55179 via svnmerge from svn+ssh://pythondev@svn.python.org/python/branches/p3yk ........ r55077 | guido.van.rossum | 2007-05-02 11:54:37 -0700 (Wed, 02 May 2007) | 2 lines Use the new print syntax, at least. ........ r55142 | fred.drake | 2007-05-04 21:27:30 -0700 (Fri, 04 May 2007) | 1 line remove old cruftiness ........ r55143 | fred.drake | 2007-05-04 21:52:16 -0700 (Fri, 04 May 2007) | 1 line make this work with the new Python ........ r55162 | neal.norwitz | 2007-05-06 22:29:18 -0700 (Sun, 06 May 2007) | 1 line Get asdl code gen working with Python 2.3. Should continue to work with 3.0 ........ r55164 | neal.norwitz | 2007-05-07 00:00:38 -0700 (Mon, 07 May 2007) | 1 line Verify checkins to p3yk (sic) branch go to 3000 list. ........ r55166 | neal.norwitz | 2007-05-07 00:12:35 -0700 (Mon, 07 May 2007) | 1 line Fix this test so it runs again by importing warnings_test properly. ........ r55167 | neal.norwitz | 2007-05-07 01:03:22 -0700 (Mon, 07 May 2007) | 8 lines So long xrange. range() now supports values that are outside -sys.maxint to sys.maxint. floats raise a TypeError. This has been sitting for a long time. It probably has some problems and needs cleanup. Objects/rangeobject.c now uses 4-space indents since it is almost completely new. ........ r55171 | guido.van.rossum | 2007-05-07 10:21:26 -0700 (Mon, 07 May 2007) | 4 lines Fix two tests that were previously depending on significant spaces at the end of a line (and before that on Python 2.x print behavior that has no exact equivalent in 3.0). ........
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for i in range(len(realres)):
# results are bool, so we can use "is" here
self.assertTrue(realres[i] is expres[i])
def test_mixed(self):
# check that comparisons involving Vector objects
# which return rich results (i.e. Vectors with itemwise
# comparison results) work
a = Vector(range(2))
b = Vector(range(3))
# all comparisons should fail for different length
for opname in opmap:
self.checkfail(ValueError, opname, a, b)
Merged revisions 55007-55179 via svnmerge from svn+ssh://pythondev@svn.python.org/python/branches/p3yk ........ r55077 | guido.van.rossum | 2007-05-02 11:54:37 -0700 (Wed, 02 May 2007) | 2 lines Use the new print syntax, at least. ........ r55142 | fred.drake | 2007-05-04 21:27:30 -0700 (Fri, 04 May 2007) | 1 line remove old cruftiness ........ r55143 | fred.drake | 2007-05-04 21:52:16 -0700 (Fri, 04 May 2007) | 1 line make this work with the new Python ........ r55162 | neal.norwitz | 2007-05-06 22:29:18 -0700 (Sun, 06 May 2007) | 1 line Get asdl code gen working with Python 2.3. Should continue to work with 3.0 ........ r55164 | neal.norwitz | 2007-05-07 00:00:38 -0700 (Mon, 07 May 2007) | 1 line Verify checkins to p3yk (sic) branch go to 3000 list. ........ r55166 | neal.norwitz | 2007-05-07 00:12:35 -0700 (Mon, 07 May 2007) | 1 line Fix this test so it runs again by importing warnings_test properly. ........ r55167 | neal.norwitz | 2007-05-07 01:03:22 -0700 (Mon, 07 May 2007) | 8 lines So long xrange. range() now supports values that are outside -sys.maxint to sys.maxint. floats raise a TypeError. This has been sitting for a long time. It probably has some problems and needs cleanup. Objects/rangeobject.c now uses 4-space indents since it is almost completely new. ........ r55171 | guido.van.rossum | 2007-05-07 10:21:26 -0700 (Mon, 07 May 2007) | 4 lines Fix two tests that were previously depending on significant spaces at the end of a line (and before that on Python 2.x print behavior that has no exact equivalent in 3.0). ........
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a = list(range(5))
b = 5 * [2]
# try mixed arguments (but not (a, b) as that won't return a bool vector)
args = [(a, Vector(b)), (Vector(a), b), (Vector(a), Vector(b))]
for (a, b) in args:
self.checkequal("lt", a, b, [True, True, False, False, False])
self.checkequal("le", a, b, [True, True, True, False, False])
self.checkequal("eq", a, b, [False, False, True, False, False])
self.checkequal("ne", a, b, [True, True, False, True, True ])
self.checkequal("gt", a, b, [False, False, False, True, True ])
self.checkequal("ge", a, b, [False, False, True, True, True ])
for ops in opmap.values():
for op in ops:
# calls __bool__, which should fail
self.assertRaises(TypeError, bool, op(a, b))
class NumberTest(unittest.TestCase):
def test_basic(self):
# Check that comparisons involving Number objects
# give the same results give as comparing the
# corresponding ints
Merged revisions 55007-55179 via svnmerge from svn+ssh://pythondev@svn.python.org/python/branches/p3yk ........ r55077 | guido.van.rossum | 2007-05-02 11:54:37 -0700 (Wed, 02 May 2007) | 2 lines Use the new print syntax, at least. ........ r55142 | fred.drake | 2007-05-04 21:27:30 -0700 (Fri, 04 May 2007) | 1 line remove old cruftiness ........ r55143 | fred.drake | 2007-05-04 21:52:16 -0700 (Fri, 04 May 2007) | 1 line make this work with the new Python ........ r55162 | neal.norwitz | 2007-05-06 22:29:18 -0700 (Sun, 06 May 2007) | 1 line Get asdl code gen working with Python 2.3. Should continue to work with 3.0 ........ r55164 | neal.norwitz | 2007-05-07 00:00:38 -0700 (Mon, 07 May 2007) | 1 line Verify checkins to p3yk (sic) branch go to 3000 list. ........ r55166 | neal.norwitz | 2007-05-07 00:12:35 -0700 (Mon, 07 May 2007) | 1 line Fix this test so it runs again by importing warnings_test properly. ........ r55167 | neal.norwitz | 2007-05-07 01:03:22 -0700 (Mon, 07 May 2007) | 8 lines So long xrange. range() now supports values that are outside -sys.maxint to sys.maxint. floats raise a TypeError. This has been sitting for a long time. It probably has some problems and needs cleanup. Objects/rangeobject.c now uses 4-space indents since it is almost completely new. ........ r55171 | guido.van.rossum | 2007-05-07 10:21:26 -0700 (Mon, 07 May 2007) | 4 lines Fix two tests that were previously depending on significant spaces at the end of a line (and before that on Python 2.x print behavior that has no exact equivalent in 3.0). ........
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for a in range(3):
for b in range(3):
for typea in (int, Number):
for typeb in (int, Number):
if typea==typeb==int:
continue # the combination int, int is useless
ta = typea(a)
tb = typeb(b)
for ops in opmap.values():
for op in ops:
realoutcome = op(a, b)
testoutcome = op(ta, tb)
self.assertEqual(realoutcome, testoutcome)
def checkvalue(self, opname, a, b, expres):
for typea in (int, Number):
for typeb in (int, Number):
ta = typea(a)
tb = typeb(b)
for op in opmap[opname]:
realres = op(ta, tb)
realres = getattr(realres, "x", realres)
self.assertTrue(realres is expres)
def test_values(self):
# check all operators and all comparison results
self.checkvalue("lt", 0, 0, False)
self.checkvalue("le", 0, 0, True )
self.checkvalue("eq", 0, 0, True )
self.checkvalue("ne", 0, 0, False)
self.checkvalue("gt", 0, 0, False)
self.checkvalue("ge", 0, 0, True )
self.checkvalue("lt", 0, 1, True )
self.checkvalue("le", 0, 1, True )
self.checkvalue("eq", 0, 1, False)
self.checkvalue("ne", 0, 1, True )
self.checkvalue("gt", 0, 1, False)
self.checkvalue("ge", 0, 1, False)
self.checkvalue("lt", 1, 0, False)
self.checkvalue("le", 1, 0, False)
self.checkvalue("eq", 1, 0, False)
self.checkvalue("ne", 1, 0, True )
self.checkvalue("gt", 1, 0, True )
self.checkvalue("ge", 1, 0, True )
class MiscTest(unittest.TestCase):
def test_misbehavin(self):
class Misb:
Merged revisions 78018,78035-78040,78042-78043,78046,78048-78052,78054,78059,78075-78080 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r78018 | georg.brandl | 2010-02-06 11:08:21 +0100 (Sa, 06 Feb 2010) | 1 line #7864: make deprecation notices a bit clearer. ........ r78035 | georg.brandl | 2010-02-06 23:44:17 +0100 (Sa, 06 Feb 2010) | 1 line Fix duplicate import. ........ r78036 | georg.brandl | 2010-02-06 23:49:47 +0100 (Sa, 06 Feb 2010) | 1 line Remove unused import. ........ r78037 | georg.brandl | 2010-02-06 23:59:15 +0100 (Sa, 06 Feb 2010) | 1 line No need to assign the results of expressions used only for side effects. ........ r78038 | georg.brandl | 2010-02-07 00:02:29 +0100 (So, 07 Feb 2010) | 1 line Add a missing import. ........ r78039 | georg.brandl | 2010-02-07 00:06:24 +0100 (So, 07 Feb 2010) | 1 line Add missing imports. ........ r78040 | georg.brandl | 2010-02-07 00:08:00 +0100 (So, 07 Feb 2010) | 1 line Fix a few UnboundLocalErrors in test_long. ........ r78042 | georg.brandl | 2010-02-07 00:12:12 +0100 (So, 07 Feb 2010) | 1 line Add missing import. ........ r78043 | georg.brandl | 2010-02-07 00:12:19 +0100 (So, 07 Feb 2010) | 1 line Remove duplicate test method. ........ r78046 | georg.brandl | 2010-02-07 00:18:00 +0100 (So, 07 Feb 2010) | 1 line Fix various missing import/unbound name errors. ........ r78048 | georg.brandl | 2010-02-07 00:23:45 +0100 (So, 07 Feb 2010) | 1 line We heard you like test failures so we put unbound locals in your test so that you can fail while you fail. ........ r78049 | georg.brandl | 2010-02-07 00:33:33 +0100 (So, 07 Feb 2010) | 1 line Fix import/access for some identifiers. _TestSharedCTypes does not seem to be executed? ........ r78050 | georg.brandl | 2010-02-07 00:34:10 +0100 (So, 07 Feb 2010) | 1 line Fix more unbound locals in code paths that do not seem to be used. ........ r78051 | georg.brandl | 2010-02-07 00:53:52 +0100 (So, 07 Feb 2010) | 1 line Add missing import when running these tests standalone. ........ r78052 | georg.brandl | 2010-02-07 00:54:04 +0100 (So, 07 Feb 2010) | 1 line Add missing import when running these tests standalone. ........ r78054 | georg.brandl | 2010-02-07 00:58:25 +0100 (So, 07 Feb 2010) | 1 line Add missing import. ........ r78059 | georg.brandl | 2010-02-07 12:34:15 +0100 (So, 07 Feb 2010) | 1 line Use "regexp" consistently. ........ r78075 | georg.brandl | 2010-02-07 13:16:12 +0100 (So, 07 Feb 2010) | 1 line Fix another duplicated test method. ........ r78076 | georg.brandl | 2010-02-07 13:19:43 +0100 (So, 07 Feb 2010) | 1 line Fix wrong usage of "except X, Y:". ........ r78077 | georg.brandl | 2010-02-07 13:25:50 +0100 (So, 07 Feb 2010) | 1 line Fix two redefined test methods. ........ r78078 | georg.brandl | 2010-02-07 13:27:06 +0100 (So, 07 Feb 2010) | 1 line Fix a redefined test method. ........ r78079 | georg.brandl | 2010-02-07 13:34:26 +0100 (So, 07 Feb 2010) | 1 line Add a minimal test for fnmatchcase(). ........ r78080 | georg.brandl | 2010-02-07 13:55:12 +0100 (So, 07 Feb 2010) | 1 line Remove duplicate test method. ........
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def __lt__(self_, other): return 0
def __gt__(self_, other): return 0
def __eq__(self_, other): return 0
def __le__(self_, other): self.fail("This shouldn't happen")
def __ge__(self_, other): self.fail("This shouldn't happen")
def __ne__(self_, other): self.fail("This shouldn't happen")
a = Misb()
b = Misb()
self.assertEqual(a<b, 0)
self.assertEqual(a==b, 0)
self.assertEqual(a>b, 0)
def test_not(self):
# Check that exceptions in __bool__ are properly
# propagated by the not operator
import operator
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class Exc(Exception):
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pass
class Bad:
def __bool__(self):
raise Exc
def do(bad):
not bad
for func in (do, operator.not_):
self.assertRaises(Exc, func, Bad())
@support.no_tracing
@support.infinite_recursion(25)
def test_recursion(self):
# Check that comparison for recursive objects fails gracefully
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from collections import UserList
a = UserList()
b = UserList()
a.append(b)
b.append(a)
self.assertRaises(RecursionError, operator.eq, a, b)
self.assertRaises(RecursionError, operator.ne, a, b)
self.assertRaises(RecursionError, operator.lt, a, b)
self.assertRaises(RecursionError, operator.le, a, b)
self.assertRaises(RecursionError, operator.gt, a, b)
self.assertRaises(RecursionError, operator.ge, a, b)
b.append(17)
# Even recursive lists of different lengths are different,
# but they cannot be ordered
self.assertTrue(not (a == b))
self.assertTrue(a != b)
self.assertRaises(RecursionError, operator.lt, a, b)
self.assertRaises(RecursionError, operator.le, a, b)
self.assertRaises(RecursionError, operator.gt, a, b)
self.assertRaises(RecursionError, operator.ge, a, b)
a.append(17)
self.assertRaises(RecursionError, operator.eq, a, b)
self.assertRaises(RecursionError, operator.ne, a, b)
a.insert(0, 11)
b.insert(0, 12)
self.assertTrue(not (a == b))
self.assertTrue(a != b)
self.assertTrue(a < b)
def test_exception_message(self):
class Spam:
pass
tests = [
(lambda: 42 < None, r"'<' .* of 'int' and 'NoneType'"),
(lambda: None < 42, r"'<' .* of 'NoneType' and 'int'"),
(lambda: 42 > None, r"'>' .* of 'int' and 'NoneType'"),
(lambda: "foo" < None, r"'<' .* of 'str' and 'NoneType'"),
(lambda: "foo" >= 666, r"'>=' .* of 'str' and 'int'"),
(lambda: 42 <= None, r"'<=' .* of 'int' and 'NoneType'"),
(lambda: 42 >= None, r"'>=' .* of 'int' and 'NoneType'"),
(lambda: 42 < [], r"'<' .* of 'int' and 'list'"),
(lambda: () > [], r"'>' .* of 'tuple' and 'list'"),
(lambda: None >= None, r"'>=' .* of 'NoneType' and 'NoneType'"),
(lambda: Spam() < 42, r"'<' .* of 'Spam' and 'int'"),
(lambda: 42 < Spam(), r"'<' .* of 'int' and 'Spam'"),
(lambda: Spam() <= Spam(), r"'<=' .* of 'Spam' and 'Spam'"),
]
for i, test in enumerate(tests):
with self.subTest(test=i):
with self.assertRaisesRegex(TypeError, test[1]):
test[0]()
class DictTest(unittest.TestCase):
def test_dicts(self):
# Verify that __eq__ and __ne__ work for dicts even if the keys and
# values don't support anything other than __eq__ and __ne__ (and
# __hash__). Complex numbers are a fine example of that.
import random
imag1a = {}
for i in range(50):
imag1a[random.randrange(100)*1j] = random.randrange(100)*1j
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items = list(imag1a.items())
random.shuffle(items)
imag1b = {}
for k, v in items:
imag1b[k] = v
imag2 = imag1b.copy()
imag2[k] = v + 1.0
self.assertEqual(imag1a, imag1a)
self.assertEqual(imag1a, imag1b)
self.assertEqual(imag2, imag2)
self.assertTrue(imag1a != imag2)
for opname in ("lt", "le", "gt", "ge"):
for op in opmap[opname]:
self.assertRaises(TypeError, op, imag1a, imag2)
class ListTest(unittest.TestCase):
def test_coverage(self):
# exercise all comparisons for lists
x = [42]
self.assertIs(x<x, False)
self.assertIs(x<=x, True)
self.assertIs(x==x, True)
self.assertIs(x!=x, False)
self.assertIs(x>x, False)
self.assertIs(x>=x, True)
y = [42, 42]
self.assertIs(x<y, True)
self.assertIs(x<=y, True)
self.assertIs(x==y, False)
self.assertIs(x!=y, True)
self.assertIs(x>y, False)
self.assertIs(x>=y, False)
def test_badentry(self):
# make sure that exceptions for item comparison are properly
# propagated in list comparisons
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class Exc(Exception):
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pass
class Bad:
def __eq__(self, other):
raise Exc
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x = [Bad()]
y = [Bad()]
for op in opmap["eq"]:
self.assertRaises(Exc, op, x, y)
def test_goodentry(self):
# This test exercises the final call to PyObject_RichCompare()
# in Objects/listobject.c::list_richcompare()
class Good:
def __lt__(self, other):
return True
x = [Good()]
y = [Good()]
for op in opmap["lt"]:
self.assertIs(op(x, y), True)
Merged revisions 59565-59594 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r59568 | facundo.batista | 2007-12-19 13:53:01 +0100 (Wed, 19 Dec 2007) | 3 lines Some minor cleanups. Thanks Mark Dickinson. ........ r59573 | raymond.hettinger | 2007-12-19 19:13:31 +0100 (Wed, 19 Dec 2007) | 1 line Fix issue 1661: Flags argument silently ignored in re functions with compiled regexes. ........ r59574 | guido.van.rossum | 2007-12-19 20:41:06 +0100 (Wed, 19 Dec 2007) | 7 lines Patch #1583 by Adam Olsen. This adds signal.set_wakeup_fd(fd) which sets a file descriptor to which a zero byte will be written whenever a C exception handler runs. I added a simple C API as well, PySignal_SetWakeupFd(fd). ........ r59575 | raymond.hettinger | 2007-12-19 23:14:34 +0100 (Wed, 19 Dec 2007) | 1 line Bigger range for non-extended opargs. ........ r59576 | guido.van.rossum | 2007-12-19 23:51:13 +0100 (Wed, 19 Dec 2007) | 5 lines Patch #1549 by Thomas Herve. This changes the rules for when __hash__ is inherited slightly, by allowing it to be inherited when one or more of __lt__, __le__, __gt__, __ge__ are overridden, as long as __eq__ and __ne__ aren't. ........ r59577 | raymond.hettinger | 2007-12-20 02:25:05 +0100 (Thu, 20 Dec 2007) | 1 line Add comments ........ r59578 | brett.cannon | 2007-12-20 11:09:52 +0100 (Thu, 20 Dec 2007) | 3 lines Add tests for the warnings module; specifically formatwarning and showwarning. Still need tests for warn_explicit and simplefilter. ........ r59582 | guido.van.rossum | 2007-12-20 18:28:10 +0100 (Thu, 20 Dec 2007) | 2 lines Patch #1672 by Joseph Armbruster. Use tempdir() to get a temporary directory. ........ r59584 | georg.brandl | 2007-12-20 22:03:02 +0100 (Thu, 20 Dec 2007) | 2 lines Fix refleak introduced in r59576. ........ r59586 | guido.van.rossum | 2007-12-21 00:48:28 +0100 (Fri, 21 Dec 2007) | 4 lines Improve performance of built-in any()/all() by avoiding PyIter_Next() -- using a trick found in ifilter(). Feel free to backport to 2.5. ........ r59591 | andrew.kuchling | 2007-12-22 18:27:02 +0100 (Sat, 22 Dec 2007) | 1 line Add item ........
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if __name__ == "__main__":
unittest.main()