def update(self):
c = Counter()
c.update('aababc')
Assert(c) == Counter('aababc')
c.update({'b': 1})
Assert(c['b']) == 3
c.update(c=2)
Assert(c['c']) == 3
def most_common(self):
c = Counter('aababc')
result = [('a', 3), ('b', 2), ('c', 1)]
Assert(c.most_common()) == result
Assert(c.most_common(2)) == result[:-1]
Assert(c.most_common(1)) == result[:-2]
Assert(c.most_common(0)) == []
def __init__(self, mapping=(), maxsize=float('inf')):
dict.__init__(self, mapping)
self.maxsize = maxsize
self.usage_counter = Counter()
def or_and(self):
c1 = Counter('abc')
new = c1 | c1 * 2
Assert(new.values()) == [2] * 3
new = c1 & c1 * 2
Assert(new.values()) == [1] * 3
def sub(self):
c = Counter('aababc')
assert not c - c
def mul(self):
c = Counter('abc')
Assert(c * 2) == c + c
def add(self):
c = Counter('aababc')
new = c + c
Assert(new['a']) == 6
Assert(new['b']) == 4
Assert(new['c']) == 2
def elements(self):
c = Counter('aababc')
for element in c:
Assert(list(c.elements()).count(element)) == c[element]
def setdefault(self):
c = Counter('a')
Assert(c.setdefault('a', 2)) == 1
Assert(c['a']) == 1
Assert(c.setdefault('b')) == 1
Assert(c['b']) == 1
def get(self):
c = Counter('a')
Assert(c.get('a')) == 1
Assert(c.get('b')) == 0
def missing(self):
c = Counter()
Assert(c['a']) == 0