def testSetZero(self): # {{{
"""Setting to zero deletes"""
a = multiset((10, 20, 30))
a[10] = 0
expected = set({20: 1, 30: 1}.items())
self.assertEqual(set(a.items()), expected)
def testBadNegative(self): # {{{
"""Cannot set negative values"""
a = multiset([20])
msg = re.compile("Negative element counts are invalid: -100")
self.assertRaisesEx(ValueError, a.__setitem__, 20, -100, exc_pattern=msg)
def testBadDict(self): #{{{
'''Dict with non-integer values will set keys with count 1'''
test = {'hello': 'world', 'william': 400}
expected = {'hello': 1, 'william': 400}
a = multiset(test)
self.assertEqual(dict(a), expected)
def testIntersection(self): #{{{
'''Intersection returns min count of common elements'''
a = multiset({'hello': 100, 'world': 200})
b = multiset({'hello': 2000, 'world': 10})
self.assertEqual(dict(a & b), {'hello': 100, 'world': 10})
def testMultiset(self): #{{{
'''Pass another multiset will copy it unconditionally'''
a = multiset(range(10))
b = multiset(a)
expected = [(i, 1) for i in a]
self.assertEqual(b.items(), expected)
def testGoodDict(self): #{{{
'''Pass a dict with integer values'''
test = {'hello': 20, 'world': 30}
a = multiset(test)
self.assertEqual(dict(a), test)
def testNothing(self): #{{{
'''Pass nothing or empty sequence'''
a = multiset()
self.assertFalse(a)
a = multiset([])
self.assertFalse(a)
def testIter(self): #{{{
'''Pass a hashable iter, sets count to one'''
a = range(10)
a = multiset(a)
expected = [(i, 1) for i in a]
self.assertEqual(a.items(), expected)
def testHaveAll(self): #{{{
'''Union contains all objects'''
a = multiset(range(5))
b = multiset((i, i) for i in xrange(5))
self.assertEqual(dict(a|b), dict((i, 1 if i == 0 else i) for i in xrange(5)))
def testSetDefault(self): #{{{
'''Set default properly'''
a = multiset()
res = a.setdefault('h', 200)
self.assertEqual(dict(a), {'h': 200})
self.assertEqual(res, 200)
def testDefault(self): #{{{
'''Default set to 1'''
a = multiset()
res = a.setdefault('hello')
self.assertEqual(dict(a), {'hello': 1})
self.assertEqual(res, 1)