--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/python-2.6.1/Lib/test/test_richcmp.py Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,336 @@
+# Tests for rich comparisons
+
+import unittest
+from test import test_support
+
+import operator
+
+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 test_support.TestFailed, "Number.__cmp__() should not be called"
+
+ def __repr__(self):
+ return "Number(%r)" % (self.x, )
+
+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
+
+ def __nonzero__(self):
+ raise TypeError, "Vectors cannot be used in Boolean contexts"
+
+ def __cmp__(self, other):
+ raise test_support.TestFailed, "Vector.__cmp__() should not be called"
+
+ def __repr__(self):
+ return "Vector(%r)" % (self.data, )
+
+ 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"
+ 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))
+ for i in xrange(len(realres)):
+ # results are bool, so we can use "is" here
+ self.assert_(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)
+
+ a = 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.itervalues():
+ for op in ops:
+ # calls __nonzero__, 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
+ for a in xrange(3):
+ for b in xrange(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.itervalues():
+ 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.assert_(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:
+ def __lt__(self, other): return 0
+ def __gt__(self, other): return 0
+ def __eq__(self, other): return 0
+ def __le__(self, other): raise TestFailed, "This shouldn't happen"
+ def __ge__(self, other): raise TestFailed, "This shouldn't happen"
+ def __ne__(self, other): raise TestFailed, "This shouldn't happen"
+ def __cmp__(self, other): raise RuntimeError, "expected"
+ a = Misb()
+ b = Misb()
+ self.assertEqual(a<b, 0)
+ self.assertEqual(a==b, 0)
+ self.assertEqual(a>b, 0)
+ self.assertRaises(RuntimeError, cmp, a, b)
+
+ def test_not(self):
+ # Check that exceptions in __nonzero__ are properly
+ # propagated by the not operator
+ import operator
+ class Exc(Exception):
+ pass
+ class Bad:
+ def __nonzero__(self):
+ raise Exc
+
+ def do(bad):
+ not bad
+
+ for func in (do, operator.not_):
+ self.assertRaises(Exc, func, Bad())
+
+ def test_recursion(self):
+ # Check that comparison for recursive objects fails gracefully
+ from UserList import UserList
+ a = UserList()
+ b = UserList()
+ a.append(b)
+ b.append(a)
+ self.assertRaises(RuntimeError, operator.eq, a, b)
+ self.assertRaises(RuntimeError, operator.ne, a, b)
+ self.assertRaises(RuntimeError, operator.lt, a, b)
+ self.assertRaises(RuntimeError, operator.le, a, b)
+ self.assertRaises(RuntimeError, operator.gt, a, b)
+ self.assertRaises(RuntimeError, operator.ge, a, b)
+
+ b.append(17)
+ # Even recursive lists of different lengths are different,
+ # but they cannot be ordered
+ self.assert_(not (a == b))
+ self.assert_(a != b)
+ self.assertRaises(RuntimeError, operator.lt, a, b)
+ self.assertRaises(RuntimeError, operator.le, a, b)
+ self.assertRaises(RuntimeError, operator.gt, a, b)
+ self.assertRaises(RuntimeError, operator.ge, a, b)
+ a.append(17)
+ self.assertRaises(RuntimeError, operator.eq, a, b)
+ self.assertRaises(RuntimeError, operator.ne, a, b)
+ a.insert(0, 11)
+ b.insert(0, 12)
+ self.assert_(not (a == b))
+ self.assert_(a != b)
+ self.assert_(a < b)
+
+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
+ items = imag1a.items()
+ random.shuffle(items)
+ imag1b = {}
+ for k, v in items:
+ imag1b[k] = v
+ imag2 = imag1b.copy()
+ imag2[k] = v + 1.0
+ self.assert_(imag1a == imag1a)
+ self.assert_(imag1a == imag1b)
+ self.assert_(imag2 == imag2)
+ self.assert_(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 assertIs(self, a, b):
+ self.assert_(a is b)
+
+ 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
+ class Exc(Exception):
+ pass
+ class Bad:
+ def __eq__(self, other):
+ raise Exc
+
+ 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)
+
+def test_main():
+ test_support.run_unittest(VectorTest, NumberTest, MiscTest, DictTest, ListTest)
+
+if __name__ == "__main__":
+ test_main()