def test_hashset_add(hashset):
hashset['a'] = 'test1'
hashset['b'] = 'test2'
hashset['c'] = 'test3'
assert len(hashset.keys()) == 3
assert sorted(hashset.keys()) == ['a', 'b', 'c']
assert len(hashset.values()) == 3
assert sorted(hashset.values()) == ['test1', 'test2', 'test3']
def test_hashset_del(hashset):
hashset['a'] = 'test1'
hashset['b'] = 'test2'
hashset['c'] = 'test3'
del hashset['a']
assert len(hashset.keys()) == 2
with pytest.raises(KeyError):
print("Should raise an exception: {}".format(hashset['a']))
