def test_intersection(self):
first_set = HashSet(['One', 'Two', 'Three', 'Four'])
second_set = HashSet(['Red', 'Two', 'Three', 'Orange'])
intersection = first_set.intersection(second_set)
assert intersection.size == 2
assert intersection.contains('Two')
assert intersection.contains('Three')
def test_is_subset(self):
hs = HashSet([1, 2, 3, 4, 5, 6, 7, 8])
assert HashSet([1, 2, 3]).is_subset(hs)
assert not HashSet([11]).is_subset(hs)
assert not hs.is_subset([11])
def test_difference(self):
first_set = HashSet(['One', 'Two', 'Three', 'Four'])
second_set = HashSet(['Red', 'Two', 'Three', 'Orange'])
difference = first_set.difference(second_set)
print(difference.size)
assert difference.contains('One') == True
assert difference.contains('Two') == False
assert difference.contains('Three') == False
def test_add(self):
items = ['A', 'B', 'C']
hs = HashSet()
for item in items:
hs.add(item)
for item in items:
assert item in hs
assert len(hs) == len(items)
def test_difference(self):
set_1 = HashSet([1, 2, 3, 4])
set_2 = HashSet([1, 2, 5, 6])
diff = set_1 - set_2
assert len(diff) == 2
assert 3 in diff
assert 1 not in diff
assert 2 not in diff
def test_union(self):
first_set = HashSet(['One', 'Two', 'Three', 'Four'])
second_set = HashSet(['Red', 'Green', 'Blue'])
union = first_set.union(second_set)
assert union.size == 7
assert union.contains('Two') == True
assert union.contains('Three') == True
assert union.contains('Blue') == True
assert union.contains('Purple') == False
assert union.contains('Six') == False
def test_intersection(self):
set_1 = HashSet([1, 2, 3, 4])
set_2 = HashSet([1, 2, 5, 6])
intersection = set_1 & set_2
assert 1 in intersection
assert len(intersection) == 2
assert 2 in intersection
assert 3 not in intersection
def test_size(self):
hs = HashSet()
assert hs.size == 0
hs.add('A')
assert hs.size == 1
hs.add('B')
assert hs.size == 2
hs.remove('A')
assert hs.size == 1
hs.remove('B')
assert hs.size == 0
def test_union(self):
set_1 = HashSet([1, 2, 3, 4])
set_2 = HashSet([1, 5, 6])
union = set_1 + set_2
assert len(union) == 6
assert 5 in union
assert 7 not in union
union.remove(1)
assert 1 not in union
assert len(union) == 5
def test_contains(self):
items = ['A', 'B', 'C']
hs = HashSet(items)
for item in items:
assert item in hs
assert 'D' not in hs
assert 'E' not in hs
def test_contains(self):
new_set = HashSet(['This', 'is', 'my', 'set'])
assert new_set.contains('This') == True
assert new_set.contains('my') == True
assert new_set.contains('set') == True
assert new_set.contains('Willowwww') == False
assert new_set.contains('your') == False
class HashMap:
class __KVPair:
def __init__(self, key, value):
self.key = key
self.value = value
def __eq__(self, other):
if type(self) != type(other):
return False
return self.key == other.key
def getKey(self):
return self.key
def getValue(self):
return self.value
def __hash__(self):
return hash(self.key)
def __init__(self):
self.hSet = HashSet()
def __len__(self):
return len(self.hSet)
def __contains__(self, item):
return HashMap.__KVPair(item, None) in self.hSet
def __notcontains__(self, item):
return item not in self.hSet
def __setitem__(self, key, value):
self.hSet.add(HashMap.__KVPair(key, value))
def __getitem__(self, key):
if HashMap.__KVPair(key, None) in self.hSet:
val = self.hSet[HashMap.__KVPair(key, None)].getValue()
return val
raise KeyError("Key " + str(key) + "not in HashMap")
def __iter__(self):
for x in self.hSet:
yield x.getKey()
def test_remove(self):
items = ['A', 'B', 'C']
hs = HashSet(items)
for item in items:
# For each item, make sure can only remove once
hs.remove(item)
with self.assertRaises(KeyError):
hs.remove(item)
assert hs.size == 0
def __init__(self):
self.hSet = HashSet()
def test_remove(self):
new_set = HashSet(['red', 'brown', 'gray'])
assert new_set.__length__() == 3
new_set.remove('brown')
assert new_set.__length__() == 2
assert new_set.contains('brown') == False
assert new_set.contains('red') == True
assert new_set.contains('gray') == True
new_set.remove('gray')
assert new_set.__length__() == 1
assert new_set.contains('red') == True
assert new_set.contains('gray') == False
def test_add(self):
new_set = HashSet()
assert new_set.__length__() == 0
new_set.add('red')
new_set.add('brown')
new_set.add('gray')
assert new_set.__length__() == 3
assert new_set.contains('red') == True
assert new_set.contains('brown') == True
assert new_set.contains('purple') == False
new_set.add('orange')
new_set.add('purple')
assert new_set.__length__() == 5
assert new_set.contains('purple') == True
def test_is_superset(self):
first_set = HashSet(
['Let', 'Me', 'Reck', 'Orange', 'Pill', 'Good', 'Sir'])
second_set = HashSet(['Let', 'Me', 'Reck'])
assert first_set.is_superset(second_set) == True
assert second_set.is_superset(first_set) == False
def test_init(self):
hs = HashSet()
assert hs.size == 0
assert str(hs) == '{}'
def test_init(self):
new_set = HashSet()
assert new_set.size == 0
working_set = HashSet(['Working', 'Set'])
assert working_set.__length__() == 2
def test_init_with_list(self):
items = [1, 2, 3, 4]
hs = HashSet(items)
assert hs.size == len(items)
for item in items:
assert item in hs
