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Add test for comparing recursive data types.

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Guido van Rossum 2001-01-18 16:21:57 +00:00
parent 1c2fb9ce29
commit 890f209619
1 changed files with 42 additions and 1 deletions
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43
Lib/test/test_richcmp.py
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@ -1,6 +1,6 @@
# Tests for rich comparisons
from test_support import TestFailed, verify
from test_support import TestFailed, verify, verbose
class Number:
@ -188,6 +188,46 @@ def misbehavin():
else:
raise TestFailed, "cmp(Misb(), Misb()) didn't raise RuntimeError"
def recursion():
from UserList import UserList
a = UserList(); a.append(a)
b = UserList(); b.append(b)
def check(s, a=a, b=b):
if verbose:
print "trying", s, "..."
verify(eval(s))
if verbose:
print "recursion tests: a=%s, b=%s" % (a, b)
check('a==b')
check('a<=b')
check('a>=b')
check('not a<b')
check('not a>b')
check('not a!=b')
check('cmp(a,b) == 0')
a.append(1)
b.append(0)
if verbose:
print "recursion tests: a=%s, b=%s" % (a, b)
check('a>b')
check('a>=b')
check('a!=b')
check('not a<b')
check('not a<=b')
check('not a==b')
check('cmp(a,b) == 1')
a[1] = -1
if verbose:
print "recursion tests: a=%s, b=%s" % (a, b)
check('a<b')
check('a<=b')
check('a!=b')
check('not a>b')
check('not a>=b')
check('not a==b')
check('cmp(a,b) == -1')
if verbose: print "recursion tests ok"
def main():
basic()
tabulate()
@ -195,5 +235,6 @@ def main():
tabulate(c2=int)
testvector()
misbehavin()
recursion()
main()