Viewing file:  test_contains.py (3.61 KB) -rw-r--r--
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from test_support import TestFailed, have_unicode
class base_set:
def __init__(self, el):
self.el = el
class set(base_set):
def __contains__(self, el):
return self.el == el
class seq(base_set):
def __getitem__(self, n):
return [self.el][n]
def check(ok, *args):
if not ok:
raise TestFailed, " ".join(map(str, args))
a = base_set(1)
b = set(1)
c = seq(1)
check(1 in b, "1 not in set(1)")
check(0 not in b, "0 in set(1)")
check(1 in c, "1 not in seq(1)")
check(0 not in c, "0 in seq(1)")
try:
1 in a
check(0, "in base_set did not raise error")
except TypeError:
pass
try:
1 not in a
check(0, "not in base_set did not raise error")
except TypeError:
pass
# Test char in string
check('c' in 'abc', "'c' not in 'abc'")
check('d' not in 'abc', "'d' in 'abc'")
try:
'' in 'abc'
check(0, "'' in 'abc' did not raise error")
except TypeError:
pass
try:
'ab' in 'abc'
check(0, "'ab' in 'abc' did not raise error")
except TypeError:
pass
try:
None in 'abc'
check(0, "None in 'abc' did not raise error")
except TypeError:
pass
if have_unicode:
# Test char in Unicode
check('c' in unicode('abc'), "'c' not in u'abc'")
check('d' not in unicode('abc'), "'d' in u'abc'")
try:
'' in unicode('abc')
check(0, "'' in u'abc' did not raise error")
except TypeError:
pass
try:
'ab' in unicode('abc')
check(0, "'ab' in u'abc' did not raise error")
except TypeError:
pass
try:
None in unicode('abc')
check(0, "None in u'abc' did not raise error")
except TypeError:
pass
# Test Unicode char in Unicode
check(unicode('c') in unicode('abc'), "u'c' not in u'abc'")
check(unicode('d') not in unicode('abc'), "u'd' in u'abc'")
try:
unicode('') in unicode('abc')
check(0, "u'' in u'abc' did not raise error")
except TypeError:
pass
try:
unicode('ab') in unicode('abc')
check(0, "u'ab' in u'abc' did not raise error")
except TypeError:
pass
# Test Unicode char in string
check(unicode('c') in 'abc', "u'c' not in 'abc'")
check(unicode('d') not in 'abc', "u'd' in 'abc'")
try:
unicode('') in 'abc'
check(0, "u'' in 'abc' did not raise error")
except TypeError:
pass
try:
unicode('ab') in 'abc'
check(0, "u'ab' in 'abc' did not raise error")
except TypeError:
pass
# A collection of tests on builtin sequence types
a = range(10)
for i in a:
check(i in a, "%s not in %s" % (`i`, `a`))
check(16 not in a, "16 not in %s" % `a`)
check(a not in a, "%s not in %s" % (`a`, `a`))
a = tuple(a)
for i in a:
check(i in a, "%s not in %s" % (`i`, `a`))
check(16 not in a, "16 not in %s" % `a`)
check(a not in a, "%s not in %s" % (`a`, `a`))
class Deviant1:
"""Behaves strangely when compared
This class is designed to make sure that the contains code
works when the list is modified during the check.
"""
aList = range(15)
def __cmp__(self, other):
if other == 12:
self.aList.remove(12)
self.aList.remove(13)
self.aList.remove(14)
return 1
check(Deviant1() not in Deviant1.aList, "Deviant1 failed")
class Deviant2:
"""Behaves strangely when compared
This class raises an exception during comparison. That in
turn causes the comparison to fail with a TypeError.
"""
def __cmp__(self, other):
if other == 4:
raise RuntimeError, "gotcha"
try:
check(Deviant2() not in a, "oops")
except TypeError:
pass
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